CELEX: 62001CJ0448
Language: en
Date: 2003-12-04 00:00:00
Title: Judgment of the Court (Sixth Chamber) of 4 December 2003. # EVN AG and Wienstrom GmbH v Republik Österreich. # Reference for a preliminary ruling: Bundesvergabeamt - Austria. # Directive 93/36/EEC - Public supply contracts - Concept of the most economically advantageous tender - Award criterion giving preference to electricity produced from renewable energy sources - Directive 89/665/EEC - Public procurement review proceedings - Unlawful decisions - Possibility of annulment only in the case of material influence on the outcome of the tender procedure - Illegality of an award criterion - Obligation to cancel the invitation to tender. # Case C-448/01.

Case C-448/01 EVN AG and Wienstrom GmbHvRepublic of Austria(Reference for a preliminary ruling from the Bundesvergabeamt (Austria))
         
            «(Directive 93/36/EEC – Public supply contracts – Concept of the most economically advantageous tender – Award criterion giving preference to electricity produced from renewable energy sources – Directive 89/665/EEC – Public procurement review proceedings – Unlawful decisions – Possibility of annulment only in the case of material influence on the outcome of the tender procedure – Illegality of an award criterion – Obligation to cancel the invitation to tender)»
            
               
                  Opinion of Advocate General Mischo delivered on 27 February 2003 
                     
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                  Judgment of the Court (Sixth Chamber), 4 December 2003  
                     
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            Summary of the Judgment
         
         
                  1..
                  Approximation of laws – Procedures for the award of public supply contracts – Directive 93/36 –   Award of contracts – Most economically advantageous tender – Criteria – Supply of electricity from renewable energy sources – Whether permissible – Conditions  (Council Directive 93/36, Art. 26) 
         
                  2..
                  Approximation of laws – Review procedures relating to the award of public supply and public works contracts – Directive 89/665 – Finding of illegality of an award criterion by the review body – Obligation to cancel the invitation to tender  (Council Directive 89/665) 
         
         1.
          The Community legislation on public procurement does not preclude a contracting authority from applying, in the context of
         the assessment of the most economically advantageous tender for a contract for the supply of electricity, an award criterion
         with a weighting of 45% which requires that the electricity supplied be produced from renewable energy sources. The fact that
         that criterion does not necessarily serve to achieve the objective pursued is irrelevant in that regard. On the other hand, that legislation does preclude such a criterion where ─ it is not accompanied by requirements which permit the accuracy of the information contained in the tenders to be effectively
         verified, ─ it requires tenderers to state how much electricity they can supply from renewable energy sources to a non-defined group
         of consumers, and allocates the maximum number of points to whichever tenderer states the highest amount, where the supply
         volume is taken into account only to the extent that it exceeds the volume of consumption expected in the context of the procurement.
         It is for the national court to determine whether, despite the contracting authority's failure to stipulate a specific supply
         period, the award criterion was sufficiently clearly formulated to satisfy the requirements of equal treatment and transparency
         of procedures for awarding public contracts. see para. 72, operative part 1
         
         2.
          The community legislation on public procurement requires the contracting authority to cancel an invitation to tender if it
         transpires in review proceedings under Article 1 of Directive 89/665 on the coordination of the laws, regulations and administrative
         provisions relating to the application of review procedures to the award of public supply and public work contracts, as amended
         by Directive 92/50 relating to the coordination of procedures for the award of public service contracts, that a decision relating
         to one of the award criteria laid down by that authority is unlawful and it is therefore annulled by the review body. In such a case the contracting authority cannot validly continue the tender procedure leaving aside that criterion since that
         would be tantamount to amending the criteria applicable to the procedure in question. see paras 94-95, operative part 2
      

      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
            
            JUDGMENT OF THE COURT (Sixth Chamber)4 December 2003  (1)
         
         
            
         
               ((Directive 93/36/EEC – Public supply contracts – Concept of the most economically advantageous tender – Award criterion giving preference to electricity produced from renewable energy sources – Directive 89/665/EEC – Public procurement review proceedings – Unlawful decisions – Possibility of annulment only in the case of material influence on the outcome of the tender procedure – Illegality of an award criterion – Obligation to cancel the invitation to tender))
               
            In Case C-448/01, 
            REFERENCE to the Court under Article 234 EC by the Bundesvergabeamt (Austria) for a preliminary ruling in the proceedings
            pending before that body between
            
            
            
             EVN AG,  Wienstrom GmbH 
            
            
            and
            
             Republik Österreich, third parties: Stadtwerke Klagenfurt AG and Kärntner Elektrizitäts-AG, 
            
            
            on the interpretation of Article 26 of Council Directive 93/36/EEC of 14 June 1993 coordinating procedures for the award of
            public supply contracts (OJ 1993 L 199, p. 1) and of Articles 1 and 2(1)(b) of Council Directive 89/665/EEC of 21 December
            1989 on the coordination of the laws, regulations and administrative provisions relating to the application of review procedures
            to the award of public supply and public works contracts (OJ 1989 L 395, p. 33), as amended by Directive 92/50/EEC of 18 June
            1992 relating to the coordination of procedures for the award of public service contracts (OJ 1992 L 209, p. 1),
            
            THE COURT (Sixth Chamber),,
            
            composed of: V. Skouris (Rapporteur), acting for the President of the Sixth Chamber, C. Gulmann, J.-P. Puissochet, R. Schintgen and N. Colneric, Judges, 
            
            Advocate General: J. Mischo, Registrar: H.A. Rühl (Principal Administrator), 
            
            
            after considering the written observations submitted on behalf of:
               
               
               ─
               EVN AG and Wienstrom GmbH, by M. Öhler, Rechtsanwalt, 
               
               
               ─
               the Republik Österreich, by A. Gerscha, Rechtsanwalt, 
               
               
               ─
               the Austrian Government, by M. Fruhmann, acting as Agent, 
               
               
               ─
               the Netherlands Government, by S. Terstal, acting as Agent, 
               
               
               ─
               the Swedish Government, by K. Renman, acting as Agent, 
               
               
               ─
               the Commission of the European Communities, by M. Nolin, acting as Agent, and T. Eilmansberger, Rechtsanwalt, 
               
               
            
            
            having regard to the Report for the Hearing,
            
            after hearing the oral observations of EVN AG and Wienstrom GmbH, the Republik Österreich, the Austrian Government and the
               Commission at the hearing on 23 January 2003,
            
            
            after hearing the Opinion of the Advocate General at the sitting on 27 February 2003,
         gives the following
         
         
         Judgment
         1
            
         By order of 13 November 2001, received at the Court Registry on 20 November 2001, the Bundesvergabeamt (Federal Procurement
         Office) referred to the Court of Justice for a preliminary ruling under Article 234 EC four questions on the interpretation
         of Article 26 of Council Directive 93/36/EEC of 14 June 1993 coordinating procedures for the award of public supply contracts
         (OJ 1993 L 199, p. 1) and of Articles 1 and 2(1)(b) of Council Directive 89/665/EEC of 21 December 1989 on the coordination
         of the laws, regulations and administrative provisions relating to the application of review procedures to the award of public
         supply and public works contracts (OJ 1989 L 395, p. 33), as amended by Council Directive 92/50/EEC of 18 June 1992 relating
         to the coordination of procedures for the award of public service contracts (OJ 1992 L 209, p. 1) (
         Directive 89/665). 
         
         
         2
            
         Those questions were raised in proceedings between a group of undertakings consisting of EVN AG and Wienstrom GmbH on the
         one hand, and the Republik Österreich in its capacity as the contracting authority on the other concerning the award of a
         public supply contract in respect of which the applicants in the main proceedings had submitted a tender. 
         
            
               The legal background
            Community legislation
         
         
         3
            
         Article 26 of Directive 93/36, which appears in Chapter 3 of Title IV of the directive, entitled  
         Criteria for the award of contracts, provides: 1. The criteria on which the contracting authority shall base the award of contracts shall be:...(b) or, when award is made to the most economically advantageous tender, various criteria according to the contract in question:
         e.g. price, delivery date, running costs, cost-effectiveness, quality, aesthetic and functional characteristics, technical
         merit, after-sales service and technical assistance.2. In the case referred to in point (b) of paragraph 1, the contracting authority shall state in the contract documents or
         in the contract notice all the criteria [it] intend[s] to apply to the award, where possible in descending order of importance.
         
         
         4
            
         The sixth recital in the preamble to Directive 89/665 states that it is necessary to ensure that adequate procedures exist
         in all the Member States to permit the setting aside of decisions taken unlawfully and compensation of persons harmed by an
         infringement. 
         
         
         5
            
         Article 1 of Directive 89/665 states: 1. The Member States shall take the measures necessary to ensure that, as regards contract award procedures falling within
         the scope of Directives 71/305/EEC, 77/62/EEC, and 92/50/EEC ... , decisions taken by the contracting authorities may be reviewed
         effectively and, in particular, as rapidly as possible in accordance with the conditions set out in the following articles
         and, in particular, Article 2(7) on the grounds that such decisions have infringed Community law in the field of public procurement
         or national rules implementing that law....3. The Member States shall ensure that the review procedures are available, under detailed rules which the Member States may
         establish, at least to any person having or having had an interest in obtaining a particular public supply or public works
         contract and who has been or risks being harmed by an alleged infringement. In particular, the Member States may require that
         the person seeking the review must have previously notified the contracting authority of the alleged infringement and of his
         intention to seek review.
         
         
         6
            
         Article 2 of Directive 89/665 provides: 1. The Member States shall ensure that the measures taken concerning the review procedures specified in Article 1 include
         provision for the powers to:...
         
         (b)
         either set aside or ensure the setting aside of decisions taken unlawfully, including the removal of discriminatory technical,
         economic or financial specifications in the invitation to tender, the contract documents or in any other document relating
         to the contract award procedure; 
         ...5. The Member States may provide that where damages are claimed on the grounds that a decision was taken unlawfully, the contested
         decision must first be set aside by a body having the necessary powers.6. The effects of the exercise of the powers referred to in paragraph 1 on a contract concluded subsequent to its award shall
         be determined by national law.  Furthermore, except where a decision must be set aside prior to the award of damages, a Member
         State may provide that, after the conclusion of a contract following its award, the powers of the body responsible for the
         review procedures shall be limited to awarding damages to any person harmed by an infringement.
         
         
         7
            
         Recital 2 in the preamble to Directive 2001/77/EC of the European Parliament and of the Council of 27 September 2001 on the
         promotion of electricity produced from renewable energy sources in the internal electricity market (OJ 2001 L 283, p. 33)
         states: The promotion of electricity produced from renewable energy sources is a high Community priority as outlined in the White
         Paper on Renewable Energy Sources ... for reasons of security and diversification of energy supply, of environmental protection
         and of social and economic cohesion ....
         
         
         8
            
         Recital 18 of Directive 2001/77 states: It is important to utilise the strength of the market forces and the internal market and make electricity produced from renewable
         energy sources competitive and attractive to European citizens.
         
         
         9
            
         It is clear from Article 1 of Directive 2001/77 that the purpose of that directive is to promote an increase in the contribution
         of renewable energy sources to electricity production in the internal market for electricity and to create a basis for a future
         Community framework thereof. To that end, Article 3(1) of the directive requires the Member States to take appropriate steps
         to encourage greater consumption of electricity produced from renewable energy sources in conformity with the national indicative
         targets referred to in paragraph 2 of that article. 
         National legislation
         
         
         10
            
         Directives 89/665 and 93/36 were transposed into Austrian law by the Bundesgesetz über die Vergabe von Aufträgen (Bundesvergabegesetz)
         1997 (1997 Federal Public Procurement Law, BGBl. I, 1997/56;  
         the BVergG). 
         
         
         11
            
         Paragraph 16 of the BVergG provides: 1. Public contracts for services must be awarded, at reasonable prices, by way of a procedure provided for in this statute,
         in accordance with the principles of free and fair competition and of equal treatment of all applicants and tenderers, to
         undertakings which ─ at the latest at the time when the tenders are opened ─ are qualified, competent and reliable....7. In the award procedure, due account is to be taken of the environmental impact of the services and the employment of persons
         on training contracts.
         
         
         12
            
         Paragraph 53 of the BVergG provides: From the tenders remaining after the elimination process, the most advantageous in technical and economic terms, in accordance
         with the criteria laid down in the invitation to tender, is to be selected (principle of the best tender).
         
         
         13
            
         Paragraph 115(1) of the BVergG states: Where an undertaking claims to have an interest in the conclusion of a contract within the scope of this Federal Law, it may
         apply for the contracting authority's decision in the contract award procedure to be reviewed on the ground of unlawfulness,
         provided that it has been or risks being harmed by the alleged infringement.
         
         
         14
            
         Paragraph 117 of the BVergG states: 1. The Bundesvergabeamt shall set aside, by way of administrative decision, taking into account the opinion of the Conciliation
         Committee ..., any decision of the contracting authority in an award procedure where the decision in question:
         
         (1)
         is contrary to the provisions of this Federal Law or its implementing regulations and 
         
         
         (2)
         is material to the outcome of the award procedure. 
         ...3. After the award of the contract, the Bundesvergabeamt shall, in accordance with the conditions of subparagraph 1, determine
         only whether the alleged illegality exists or not.
         The dispute in the main proceedings and the questions referred
         
         15
            
         The defendant in the main proceedings invited tenders by way of an open procedure for the award of a public contract for the
         supply of electricity. The contract to be awarded consisted of a framework contract followed by individual contracts for the
         supply of electricity to all the Federal Republic's administrative offices in the  
          Land  of Kärnten (Carinthia). The contract term ran from 1 January 2002 to 31 December 2003. The invitation to tender, which was
         published in the  
          Official Journal of the European Communities  of 27 March 2001, included the following provision under the heading  
         Award criteria: The economically most advantageous tender according to the following criteria: impact of the services on the environment in
         accordance with the contract documents.
         
         
         16
            
         The tender had to state the price in ATS per kilowatt hour (kWh). This was to apply for the whole contract term, and was not
         to be subject to any revision or adjustment. The electricity supplier had to undertake to supply the Federal offices with
         electricity produced from renewable energy sources, subject to any technical limitations, and in any case not knowingly to
         supply those offices with electricity generated by nuclear fission. The supplier was not, however, required to submit proof
         of his electricity sources. The contracting authority was to have a right to terminate the contract and a right to punitive
         damages in the event of a breach of either of those obligations. 
         
         
         17
            
         It was stated in the contract documents that the contracting authority was aware that for technical reasons no supplier could
         guarantee that the electricity supplied to a particular consumer was actually produced from renewable energy sources but that
         the authority had nevertheless decided to contract with tenderers who could supply at least 22.5 gigawatt hours (GWh) per
         annum of electricity produced from renewable energy sources, since the annual consumption of the Federal offices was estimated
         to be around 22.5 GWh. 
         
         
         18
            
         In addition, it was specified that tenders would be eliminated if they did not contain any proof that  
         in the past two years and/or in the next two years the tenderer has produced or purchased, and/or will produce or purchase,
         and has supplied and/or will supply to final consumers, at least 22.5 GWh electricity per annum from renewable energy sources. The award criteria laid down were net price per kWh, with a weighting of 55%, and  
         energy produced from renewable energy sources, with a weighting of 45%. It was stated in relation to the latter award criterion that  
         only the amount of energy that can be supplied from renewable energy sources in excess of 22.5 GWh per annum will be taken
         into account. 
         
         
         19
            
         The four tenders submitted were opened on 10 May 2001. The tender submitted by the Kärntner Elektrizitäts-AG and Stadtwerke
         Klagenfurt AG group of tenderers (
         KELAG) stated a price of 0.44 ATS/kWh and, under reference to a table showing the amounts and origin of electricity produced or
         supplied by those companies, affirmed that they were able to supply a total amount of renewable electricity of 3 406.2 GWh.
         Energie Oberösterreich AG also submitted a tender, in which it proposed a price of 0.4191 ATS/kWh for annual consumption in
         excess of 1 million GWh and, in a table relating to 1999 to 2002, showed the various amounts of the electricity from renewable
         energy sources that it was able to supply for each of the years in that period. The highest amount stated in that connection
         was 5 280 GWh per annum. BEWAG also submitted a tender, which stated a price of 0.465 ATS/kWh.  The table included with its
         offer showed the proportion of the electricity produced or supplied by BEWAG that came from renewable energy sources, on the
         basis of which the contracting authority deduced that the amount stated in that connection was 449.2 GWh. 
         
         
         20
            
         The tender submitted by the applicants in the main proceedings stated a price of 0.52 ATS/kWh. Those applicants did not provide
         any concrete figures for the amount of electricity that they could supply from such sources, but instead merely stated that
         they had their own electricity generating plants in which they produced electricity from such sources. In addition, they had
         purchase options on electricity produced by hydroelectric power stations belonging to the Österreichische Elektrizitätswirtschafts-Aktiengesellschaft
         and other Austrian hydroelectric power stations, and other electricity purchased by them derived predominantly from long-term
         coordination contracts with the largest supplier of electricity certified as coming from renewable energy sources. In 1999
         and 2000, they had purchased exclusively hydroelectric power from Switzerland, and this would continue to be the case. The
         total amount of electricity from renewable energy sources was several times the amount of electricity referred to in the invitation
         to tender. 
         
         
         21
            
         The defendant in the main proceedings considered that, of the four tenders submitted, the best was KELAG's, and that group
         received the most points for each of the two award criteria. The applicants in the main proceedings received the fewest points
         in respect of both criteria. 
         
         
         22
            
         After having informed the contracting authority as early as 9 and 30 May 2001 that they considered that various provisions
         in the invitation to tender, including the award criterion relating to  
         electricity produced from renewable energy sources, were unlawful, the applicants in the main proceedings applied on 12 June 2001 to institute conciliation proceedings before
         the Bundes-Vergabekontrollkommission (Federal Procurement Review Commission), which refused their application on the ground
         that such proceedings had no prospect of success. 
         
         
         23
            
         The applicants in the main proceedings then instituted review proceedings before the Bundesvergabeamt, seeking, inter alia,
         annulment of the invitation to tender in its entirety, of a series of individual provisions in the contract documents and
         of a number of decisions of the contracting authority. Those decisions included, in particular, the decision to make the absence
         of proof of the production and purchase of electricity from renewable energy sources in a defined period or the absence of
         proof of future purchase of such electricity grounds for elimination, the decision to make proof of the production or purchase
         of a defined amount of electricity from such sources over a defined period a selection criterion, the decision to make the
         availability of electricity from renewable energy sources in excess of 22.5 GWh per annum an award criterion, and the decision
         refusing to cancel the invitation to tender. In addition, the applicants applied for an interim order prohibiting the contracting
         authority from awarding the contract. 
         
         
         24
            
         By decision of 16 July 2001, the Bundesvergabeamt granted the applicants' application and, initially, prohibited the contract
         from being awarded until 10 September 2001. On a further application by the applicants, the Bundesvergabeamt made an interim
         order, by decision of 17 September 2001, permitting the contracting authority to award the contract on condition that the
         award would be cancelled and the contract rescinded in the event that even only one of the applications made to that body
         by the applicants in the main proceedings were granted or the decision to award the contract in question to one of the applicants'
         co-tenderers proved to be unlawful on the basis of any other finding of the Bundesvergabeamt. 
         
         
         25
            
         On 24 October 2001, the framework contract was awarded to KELAG, subject to the conditions subsequent laid down in the decision
         referred to above. 
         
         
         26
            
         Taking the view that the interpretation of a number of provisions of Community law was necessary in order to resolve the dispute
         before it, the Bundesvergabeamt decided to stay proceedings and to refer the following questions to the Court for a preliminary
         ruling: 
         
         1.
          Do the provisions of Community law relating to the award of public contracts, in particular Article 26 of Directive 93/36/EEC,
         prohibit a contracting authority from laying down an award criterion in relation to the supply of electricity which is given
         a 45% weighting and which requires a tenderer to state, without being bound to a defined supply period, how much electricity
         he can supply from renewable energy sources to a group of consumers not more closely defined, where the maximum number of
         points is given to whichever tenderer states the highest amount and a supply volume is taken into account only to the extent
         that it exceeds the volume of consumption to be expected in the context of the contract to which the invitation to tender
         relates? 
         
         
         2.
          Do the provisions of Community law relating to the award of public contracts, in particular Article 2(1)(b) of Directive 89/665/EEC,
         prohibit making the setting aside of an unlawful decision in review proceedings under Article 1 of Directive 89/665/EEC dependent
         on proof that the unlawful decision was material to the outcome of the procurement procedure? 
         
         
         3.
          Do the provisions of Community law relating to the award of public contracts, in particular Article 26 of Directive 93/36/EEC,
         prohibit making the setting aside of an unlawful decision in review proceedings under Article 1 of Directive 89/665/EEC dependent
         on proof that the unlawful decision was material to the outcome of the procurement procedure, where that proof has to be achieved
         by the review body examining whether the ranking of the tenders actually submitted would have been different had they been
         re-evaluated disregarding the unlawful award criterion? 
         
         
         4.
          Do the provisions of Community law relating to the award of public contracts, in particular Article 26 of Directive 93/36/EEC,
         require the contracting authority to cancel the invitation to tender if it transpires in review proceedings under Article
         1 of Directive 89/665/EEC that one of the award criteria it laid down is unlawful?
         
         The first question
         
         27
            
         It is clear from the explanations provided by the Bundesvergabeamt that the first question must be understood as having two
         parts. First of all, it seeks to determine whether the Community legislation on public procurement, in particular Article
         26 of Directive 93/36, precludes a contracting authority from applying, in its assessment of the most economically advantageous
         tender for a contract for the supply of electricity, a criterion requiring that the electricity supplied be produced from
         renewable energy sources. 
         
         
         28
            
         In second place, if the first part of its question is answered in the affirmative, the Bundesvergabeamt asks for clarification
         of the Community law requirements as regards the concrete application of such a criterion, given the specific wording of the
         criterion at issue in the dispute before it, and, consequently, the second part of its question can be broken down into several
         sub-questions. 
         
         
         29
            
         More specifically, that body is unclear as to the compatibility of such a criterion with Community law given the circumstances
         set out in points (a) to (d) below, in other words, given that the criterion 
         
         (a)
         has a weighting of 45%; 
         
         
         (b)
         is not accompanied by requirements which permit the accuracy of the information contained in the tenders to be effectively
         verified, and does not necessarily serve to achieve the objective pursued; 
         
         
         (c)
         does not impose a defined supply period, and 
         
         
         (d)
         requires tenderers to state how much electricity they can supply from renewable energy sources to a non-defined group of consumers,
         and allocates the maximum number of points to whichever tenderer states the highest amount, where the supply volume is taken
         into account only to the extent that it exceeds the volume of consumption to be expected in the context of the contract to
         which the invitation to tender relates. 
         
         
         The first part of the first question
         
         
         30
            
         Referring to the lack of clarity of the expression  
         the most economically advantageous tender used in Article 26 of Directive 93/36, the Bundesvergabeamt first asks as a question of principle whether Community law allows
         the contracting authority to lay down criteria that pursue advantages which cannot be objectively assigned a direct economic
         value, such as advantages related to the protection of the environment. 
         
         
         31
            
         In that regard, it should be noted that, in a judgment delivered after the lodging of the order for reference in this case,
         which concerned the interpretation of Article 36(1)(a) of Directive 92/50, whose wording is more or less identical to that
         of Article 26(1)(b) of Directive 93/36, the Court had occasion to rule on the question whether and in what circumstances a
         contracting authority may take ecological criteria into consideration in the assessment of the most economically advantageous
         tender. 
         
         
         32
            
         More specifically, at paragraph 55 of the judgment in Case C-513/99  
          Concordia Bus Finland  [2002] ECR I-7123, the Court held that Article 36(1)(a) of Directive 92/50 cannot be interpreted as meaning that each of
         the award criteria used by the contracting authority to identify the most economically advantageous tender must necessarily
         be of a purely economic nature. 
         
         
         33
            
         The Court therefore accepted that where the contracting authority decides to award a contract to the tenderer who submits
         the most economically advantageous tender it may take into consideration ecological criteria, provided that they are linked
         to the subject-matter of the contract, do not confer an unrestricted freedom of choice on the authority, are expressly mentioned
         in the contract documents or the tender notice, and comply with all the fundamental principles of Community law, in particular
         the principle of non-discrimination (
          Concordia Bus Finland , cited above, paragraph 69). 
         
         
         34
            
         It follows that the Community legislation on public procurement does not preclude a contracting authority from applying, in
         the context of the assessment of the most economically advantageous tender for a contract for the supply of electricity, a
         criterion requiring that the electricity supplied be produced from renewable energy sources, provided that that criterion
         is linked to the subject-matter of the contract, does not confer an unrestricted freedom of choice on the authority, is expressly
         mentioned in the contract documents or the contract notice, and complies with all the fundamental principles of Community
         law, in particular the principle of non-discrimination. 
         The second part of the first question
         Second part, point (a)
         
         35
            
         In its order for reference, the Bundesvergabeamt states that even if an award criterion which relates to environmental issues,
         such as the one applied in the case at issue in the main proceedings, had to be regarded as compatible in principle with the
         Community rules on the award of public contracts, the fact that it was given a weighting of 45% would create another problem
         since it could be objected that the contracting authority is prohibited from allowing a consideration which is not capable
         of being assigned a direct economic value from having such a significant influence on the award decision. 
         
         
         36
            
         The defendant in the main proceedings submits in that regard that given the discretion enjoyed by the contracting authority
         in its identification of the most economically advantageous tender, only a weighting which resulted in an unjustified distortion
         would be unlawful. In the case at issue in the main proceedings there is not only an objective relationship between the criteria
         of  
         price and  
         electricity produced from renewable energy sources but, in addition, precedence is accorded to purely arithmetical economic considerations, since the price has a weighting
         10 points higher than that given to the capacity to supply such electricity. 
         
         
         37
            
         It must be recalled that according to settled case-law it is open to the contracting authority when choosing the most economically
         advantageous tender to choose the criteria on which it proposes to base the award of contract, provided that the purpose of
         those criteria is to identify the most economically advantageous tender and that they do not confer on the contracting authority
         an unrestricted freedom of choice as regards the award of the contract to a tenderer (see, to that effect, Case 31/87  
          Beentjes  [1988] ECR 4635, paragraphs 19 and 26; Case C-19/00  
          SIAC Construction  [2001] ECR I-7725, paragraphs 36 and 37; and  
          C  oncordia Bus Finland , paragraphs 59 and 61). 
         
         
         38
            
         Furthermore, such criteria must be applied in conformity with both the procedural rules and the fundamental principles laid
         down in Community law (see, to that effect,  
          Beentjes , paragraphs 29 and 31, and  
          Concordia Bus Finland , paragraphs 62 and 63). 
         
         
         39
            
         It follows that, provided that they comply with the requirements of Community law, contracting authorities are free not only
         to choose the criteria for awarding the contract but also to determine the weighting of such criteria, provided that the weighting
         enables an overall evaluation to be made of the criteria applied in order to identify the most economically advantageous tender.
         
         
         
         40
            
         As regards the award criterion at issue in the main proceedings, the Court has already held that the use of renewable energy
         sources for producing electricity is useful for protecting the environment in so far as it contributes to the reduction in
         emissions of greenhouse gases which are amongst the main causes of climate change which the European Community and its Member
         States have pledged to combat (Case C-379/98  
          PreussenElektra  [2001] ECR I-2099, paragraph 73). 
         
         
         41
            
         Moreover, as is clear, in particular from Recital 18 and Articles 1 and 3 of Directive 2001/77, it is for precisely that reason
         that that directive aims, by utilising the strength of market forces, to promote an increase in the contribution of renewable
         energy sources to electricity production in the internal market for electricity, an objective which, according to Recital
         2 of the directive, is a high Community priority. 
         
         
         42
            
         Having regard, therefore, to the importance of the objective pursued by the criterion at issue in the main proceedings, its
         weighting of 45% does not appear to present an obstacle to an overall evaluation of the criteria applied in order to identify
         the most economically advantageous tender. 
         
         
         43
            
         In those circumstances, and since there is no evidence to support a finding that the requirements of Community law have been
         infringed, it must be held that the application of a weighting of 45% to the award criterion at issue in the main proceedings
         is not incompatible with the Community legislation on public procurement. Second part, point (b)
         
         
         44
            
         The Bundesvergabeamt is also uncertain as to whether the award criterion at issue in the main proceedings is lawful under
         Community law, since the contracting authority itself has admitted that it does not have the technical ability to verify whether
         electricity supplied to it has actually been generated from renewable energy sources and it did not require the tenderers
         to supply proof of their actual supply obligations or existing electricity supply contracts. 
         
         
         45
            
         The referring body is therefore essentially asking whether the Community law provisions governing the award of public contracts
         preclude a contracting authority from applying an award criterion which is not accompanied by requirements which permit the
         accuracy of the information contained in the tenders to be effectively verified. 
         
         
         46
            
         In that context, the Bundesvergabeamt is also uncertain as to the extent to which such an award criterion is capable of achieving
         the objective which it pursues. Since there are no plans to verify how far the recipient of the award in fact helps by its
         production structure to increase the amount of electricity produced from renewable energy sources, it is possible that the
         application of that criteria may have no effect on the total amount of electricity produced in that way. 
         
         
         47
            
         It should be recalled that the principle of equal treatment of tenderers which, as the Court has repeatedly held, underlies
         the directives on procedures for the award of public contracts (see, in particular, Case C-470/99  
          Universale-Bau and Others  [2002] ECR I-11617, paragraph 91, and Case C-315/01  
          GAT  [2003] ECR I-6351, paragraph 73) implies, first of all, that tenderers must be in a position of equality both when they formulate
         their tenders and when those tenders are being assessed by the contracting authority (
          SIAC Construction , paragraph 34). 
         
         
         48
            
         More specifically, that means that when tenders are being assessed, the award criteria must be applied objectively and uniformly
         to all tenderers (
          SIAC Construction , cited above, paragraph 44). 
         
         
         49
            
         Second, the principle of equal treatment implies an obligation of transparency in order to enable verification that it has
         been complied with, which consists in ensuring, inter alia, review of the impartiality of procurement procedures (see, to
         that effect,  
          Universale-Bau and Others , paragraphs 91 and 92). 
         
         
         50
            
         Objective and transparent evaluation of the various tenders depends on the contracting authority, relying on the information
         and proof provided by the tenderers, being able to verify effectively whether the tenders submitted by those tenderers meet
         the award criteria. 
         
         
         51
            
         It is thus apparent that where a contracting authority lays down an award criterion indicating that it neither intends, nor
         is able, to verify the accuracy of the information supplied by the tenderers, it infringes the principle of equal treatment,
         because such a criterion does not ensure the transparency and objectivity of the tender procedure. 
         
         
         52
            
         Therefore, an award criterion which is not accompanied by requirements which permit the information provided by the tenderers
         to be effectively verified is contrary to the principles of Community law in the field of public procurement. 
         
         
         53
            
         As regards the Bundesvergabeamt's question as to whether the award criterion at issue in the main proceedings infringes Community
         law in so far as it is not necessarily capable of helping to increase the amount of electricity produced from renewable energy
         sources, it need only be noted that even if that is in fact the case, such a criterion cannot be regarded as incompatible
         with the Community provisions in the field of public procurement simply because it does not necessarily serve to achieve the
         objective pursued. Second part, point (c)
         
         
         54
            
         The Bundesvergabeamt considers that since the contracting authority omitted to determine the specific supply period in respect
         of which the amount that could be supplied was to be stated, the criterion applied is incompatible with the principle of comparability
         of tenders, which derives from the requirement of transparency. As regards the proof required for the examination of the suitability
         of the tenderers, it was the period covering the two years preceding the invitation to tender and the period covering the
         following two years which were stated to be relevant as regards the amount of electricity which would in fact be required.
         According to the Bundesvergabeamt, even if that provision were also applied in the context of the award criterion, there would
         be no definite supply period allowing for an exact calculation of the amount which in fact had to be taken into account. On
         the contrary, in a period of four years, it might be that different amounts of electricity could be supplied. It would even
         be conceivable that tenderers would state amounts which relied on assumptions as to the construction of power stations or
         other merely potential means of production of electricity from renewable energy sources. 
         
         
         55
            
         The defendant in the main proceedings explains that in Austria the electricity market was fully liberalised on 1 October 2001,
         and that since that date it has been possible to set up trading companies whose object is to buy and sell on electricity.
         As the invitation to tender was published approximately six months before that date, it was obliged to formulate the award
         criterion in terms which made it possible for both companies already on the market with their own means of electricity production
         and electricity trading companies which were only authorised to operate from 1 October 2001 to submit tenders. It therefore
         sought to give undertakings the possibility of stating the amount of electricity from renewable energy sources that they had
         produced or bought over the two years preceding the invitation to tender or to provide such information for the two coming
         years. Finally, all the undertakings provided in fact only information relating to the two years preceding the invitation
         to tender, and where the annual amounts were different the best tender was determined on the basis of the average. 
         
         
         56
            
         It is clear from the Court's case-law that the procedure for awarding a public contract must comply, at every stage, with
         both the principle of the equal treatment of potential tenderers and the principle of transparency so as to afford all parties
         equality of opportunity in formulating the terms of their tenders (see, to that effect,  
          Universale-Bau , paragraph 93). 
         
         
         57
            
         More specifically, this means that the award criteria must be formulated, in the contract documents or the contract notice,
         in such a way as to allow all reasonably well-informed tenderers of normal diligence to interpret them in the same way (
          SIAC Construction , paragraph 41). 
         
         
         58
            
         Consequently, in the case at issue in the main proceedings, the fact that in the invitation to tender the contracting authority
         omitted to determine the period in respect of which tenderers had to state in their tenders the amount of electricity from
         renewable energy sources which they could supply could be an infringement of the principles of equal treatment and transparency
         were it to transpire that that omission made it difficult or even impossible for tenderers to know the exact scope of the
         criterion in question and thus to be able to interpret it in the same way. 
         
         
         59
            
         Inasmuch as that requires a factual assessment, it is for the national court to determine, taking account of all the circumstances
         of the case, whether, despite that omission, the award criterion at issue in the main proceedings was sufficiently clearly
         formulated to satisfy the requirements of equal treatment and transparency of procedures for awarding public contracts. Second part, point (d)
         
         
         60
            
         The Bundesvergabeamt explains that the award criterion at issue in the main proceedings consists in the allocation of points
         for the amount of electricity from renewable energy sources that the tenderers will be able to supply to a non-defined group
         of consumers, where the supply volume is taken into account only to the extent that it exceeds the volume of consumption expected
         in the context of the invitation to tender. In so far as that criterion thus concerns exclusively the total amount which the
         tenderer will be able to supply in general and not the amount which the tenderer will be able to supply specifically to the
         contracting authority, the Bundesvergabeamt is uncertain whether it is linked to any direct economic advantages for the contracting
         authority. 
         ─ Observations submitted to the Court
         
         
         61
            
         The applicants in the main proceedings, the Netherlands Government and the Commission submit that in so far as the criterion
         in question relates to an amount of electricity exceeding the consumption expected in the context of the invitation to tender,
         the requirement of a direct link with the contract to be awarded is not met in the present case. In their opinion, the only
         relevant factor is the amount of electricity from renewable energy sources which can be supplied to the contracting authority.
         
         
         
         62
            
         According to the Commission, it would have been enough for the contracting authority to have required the tenderer to have
         access to a certain amount of electricity produced from renewable energy sources or to be able simply to prove that it was
         capable of delivering a certain amount of electricity in excess of the annual consumption, for example by calculating for
         a reserve of 10%. 
         
         
         63
            
         The applicants in the main proceedings additionally submit that the award criterion in question is in fact a disguised selection
         criterion inasmuch as it in fact concerns the tenderers' capacity to supply as much electricity as possible from renewable
         energy sources and, in that way, ultimately relates to the tenderers themselves. 
         
         
         64
            
         On the other hand, the defendant in the main proceedings and the Austrian Government consider that, by taking into account
         the amount of electricity produced from renewable energy sources that each tenderer was able to supply over and above 22.5
         GWh, which had to be supplied in any case, the contracting authority gave the reliability of supply of electricity, which
         is a function of the total amount of electricity to which an undertaking has access, the status of an award criterion. They
         explain that since electricity cannot be stored, that criterion is in no way irrelevant to the service provided since the
         more productive a tenderer is, the smaller the risk that the contracting authority's demand for electricity will not be met
         and that it will have to find a costly alternative in the short term. 
         
         
         65
            
         More specifically, the Austrian Government submits that although the production of electricity from renewable energy sources,
         such as wind and solar energy, is seasonal, the demand is greatest in the winter. The purpose of the award criterion in question
         is thus to ensure that the tenderer can provide a continuous supply of electricity notwithstanding the fact that supply and
         demand are not linear throughout the year, a consideration which also justifies the heavy weighting of 45% given to that criterion.
         
         ─ Findings of the Court
         
         
         66
            
         As recalled in paragraph 33 of this judgment, ecological criteria used by a contracting authority as award criteria for determining
         the most economically advantageous tender must, inter alia, be linked to the subject-matter of the contract. 
         
         
         67
            
         In the case at issue in the main proceedings, the award criterion applied does not relate to the service which is the subject-matter
         of the contract, namely the supply of an amount of electricity to the contracting authority corresponding to its expected
         annual consumption as laid down in the invitation to tender, but to the amount of electricity that the tenderers have supplied,
         or will supply, to other customers. 
         
         
         68
            
         An award criterion that relates solely to the amount of electricity produced from renewable energy sources in excess of the
         expected annual consumption, as laid down in the invitation to tender, cannot be regarded as linked to the subject-matter
         of the contract. 
         
         
         69
            
         Moreover, the fact that, in accordance with the award criterion applied, it is the amount of electricity in excess of the
         expected annual consumption as laid down in the invitation to tender which is decisive is liable to confer an advantage on
         tenderers who, owing to their larger production or supply capacities, are able to supply greater volumes of electricity than
         other tenderers. That criterion is thus liable to result in unjustified discrimination against tenderers whose tender is fully
         able to meet the requirements linked to the subject-matter of the contract. Such a limitation on the circle of economic operators
         in a position to submit a tender would have the effect of thwarting the objective of opening up the market to competition
         pursued by the directives coordinating procedures for the award of public supply contracts. 
         
         
         70
            
         Finally, even assuming that that criterion was a response to the need to ensure reliability of supplies ─ an assumption which
         it is for the national court to verify ─ it should be noted that while the reliability of supplies can, in principle, number
         amongst the award criteria used to determine the most economically advantageous tender, the capacity of tenderers to provide
         the largest amount of electricity possible in excess of the amount laid down in the invitation to tender cannot legitimately
         be given the status of an award criterion. 
         
         
         71
            
         It follows that in so far as it requires tenderers to state how much electricity they can supply from renewable energy sources
         to a non-defined group of consumers, and allocates the maximum number of points to whichever tenderer states the highest amount,
         where the supply volume is taken into account only to the extent that it exceeds the volume of consumption expected in the
         context of the procurement, the award criterion applied in the case at issue is not compatible with the Community legislation
         on public procurement. 
         
         
         72
            
         In the light of all the foregoing, the answer to the first question submitted to the Court must be that the Community legislation
         on public procurement does not preclude a contracting authority from applying, in the context of the assessment of the most
         economically advantageous tender for a contract for the supply of electricity, an award criterion with a weighting of 45%
         which requires that the electricity supplied be produced from renewable energy sources. The fact that that criterion does
         not necessarily serve to achieve the objective pursued is irrelevant in that regard. 
         On the other hand, that legislation does preclude such a criterion where
         
         
         
         ─
         it is not accompanied by requirements which permit the accuracy of the information contained in the tenders to be effectively
         verified, 
         
         
         
         ─
         it requires tenderers to state how much electricity they can supply from renewable energy sources to a non-defined group of
         consumers, and allocates the maximum number of points to whichever tenderer states the highest amount, where the supply volume
         is taken into account only to the extent that it exceeds the volume of consumption expected in the context of the procurement.
         
         
         It is for the national court to determine whether, despite the contracting authority's failure to stipulate a specific supply
         period, the award criterion was sufficiently clearly formulated to satisfy the requirements of equal treatment and transparency
         of procedures for awarding public contracts.The second and third questions
         
         73
            
         By these two questions, which can be examined together, the Bundesvergabeamt is essentially asking whether Article 2(1)(b)
         of Directive 89/665 precludes a provision of national law such as point 2 of Paragraph 117(1) of the BVergG, which makes the
         annulment in review proceedings of an unlawful decision by a contracting authority dependent on proof that the unlawful decision
         materially influenced the outcome of the procurement procedure and whether, having regard to Article 26 of Directive 93/36
         in particular, the answer to that question must differ if the proof of that influence derives from the examination by the
         review body of whether the ranking of the tenders actually submitted would have been different had they been re-evaluated
         disregarding the unlawful award criterion. 
         
         
         74
            
         It should be noted at the outset that, according to settled case-law, in the context of the cooperation between the Court
         of Justice and national courts provided for by Article 234 EC, it is solely for the national court before which the dispute
         has been brought, and which must assume responsibility for the subsequent judicial decision, to determine in the light of
         the particular circumstances of the case both the need for a preliminary ruling and the relevance of the questions which it
         submits to the Court. Consequently, where the questions submitted concern the interpretation of Community law, the Court of
         Justice is, in principle, bound to give a ruling (see, inter alia, Case C-415/93  
          Bosman  [1995] ECR I-4921, paragraph 59;  
          PreussenElektra , paragraph 38; Case C-390/99  
          Canal Satélite Digital  [2002] ECR I-607, paragraph 18; Case C-153/00  
          Der Weduwe  [2002] ECR I-11319, paragraph 31, and Case C-318/00  
          Bacardi-Martini and Cellier des Dauphins  [2003] ECR I-905, paragraph 40). 
         
         
         75
            
         However, the Court has also stated that, in exceptional circumstances, it can examine the conditions in which the case was
         referred to it by the national court, in order to assess whether it has jurisdiction (see  
          PreussenElektra , paragraph 39, and  
          Canal Satélite Digital , paragraph 19). The spirit of cooperation which must prevail in preliminary ruling proceedings requires the national court
         for its part to have regard to the function entrusted to the Court of Justice, which is to contribute to the administration
         of justice in the Member States and not to give opinions on general or hypothetical questions (
          Der Weduwe , paragraph 32, and  
          Bacardi-Martini and Cellier des Dauphins , paragraph 41). 
         
         
         76
            
         Thus the Court must decline to give a preliminary ruling on a question submitted by a national court where it is quite obvious
         that the interpretation or the assessment of the validity of a provision of Community law sought by that court bears no relation
         to the actual facts of the main action or its purpose,  or where the problem is hypothetical, or where the Court does not
         have before it the factual or legal material necessary to give a useful answer to the questions submitted to it (see, in particular,
          
          Bosman , paragraph 61; Case C-437/97  
          EKW and Wein & Co.  [2000] ECR I-1157, paragraph 52; Case C-36/99  
          Idéal Tourisme  [2000] ECR I-6049, paragraph 20, and  
          Bacardi-Martini and Cellier des Dauphins , paragraph 42). 
         
         
         77
            
         More specifically, it must be borne in mind that Article 234 EC is an instrument of judicial cooperation, by means of which
         the Court provides the national courts with the points of interpretation of Community law which may be helpful to them in
         assessing the effects of a provision of national law at issue in the disputes before them (see, in particular, Case C-300/01
          
          Salzmann  [2003] ECR I-4899, paragraph 28). 
         
         
         78
            
         It follows that in order that the Court may perform its task in accordance with the Treaty, it is essential for national courts
         to explain, when the reasons are not clear beyond doubt from the file, why they consider that a reply to their questions is
         necessary to enable them to give judgment (see, in particular,  
          Bacardi-Martini and Cellier des Dauphins , paragraph 43). 
         
         
         79
            
         In the present case, there is no information to that effect before the Court. 
         
         
         80
            
         On the one hand, as observed in paragraph 23 of this judgment, the object of the review proceedings brought in the case at
         issue is, inter alia, the annulment of the invitation to tender in its entirety and the annulment of a series of individual
         conditions in the contract documents and of a number of decisions of the contracting authority relating to the requirements
         established by the award and selection criteria used in that tender procedure. 
         
         
         81
            
         Therefore, in the light of the information in the order for reference, it is apparent that all the decisions whose annulment
         is sought in the main proceedings have a decisive effect on the outcome of the tender procedure. 
         
         
         82
            
         On the other hand, the Bundesvergabeamt has not provided any explanation as to the precise reasons for which it considers
         that it needs an answer to the question of the compatibility with the Community legislation on public procurement of the condition
         laid down in subparagraph 2 of Paragraph 117(1) of the BVergG in order to give judgment in the case pending before it. 
         
         
         83
            
         Therefore, since there is no information before the Court to show that an answer to the second and third questions is needed
         in order to resolve the dispute in the main proceedings, those questions must be regarded as hypothetical and, accordingly,
         inadmissible. 
         The fourth question
         
         84
            
         By its fourth question the Bundesvergabeamt is essentially asking whether the provisions of Community law governing the award
         of public contracts, in particular Article 26 of Directive 93/36, require the contracting authority to cancel the invitation
         to tender if it transpires in review proceedings under Article 1 of Directive 89/665 that a decision relating to one of the
         award criteria laid down by that authority is unlawful. 
         
         
         85
            
         According to the Bundesvergabeamt, if it is assumed that the review of the effects of unlawful decisions relating to award
         criteria is contrary to Community law, the only alternative where such a decision is unlawful seems to be cancellation of
         the invitation to tender, since otherwise the tender procedure would be carried out on the basis of a weighting of criteria
         which was neither laid down by the authority nor known by the tenderers. 
         Observations submitted to the Court
         
         
         86
            
         The Austrian Government submits that Community law does not recognise an express obligation to cancel invitations to tender,
         just as the directives on public procurement do not lay down a tendering obligation, and concludes that it is for the Member
         States, acting in accordance with the principles of Community law, to lay down rules determining whether, where a decision
         relating to an award criterion is recognised to be unlawful, the contracting authority is obliged to cancel the invitation
         to tender. 
         
         
         87
            
         The defendant in the main proceedings states that, pursuant to Article 2(6) of Directive 89/665, the consequences of an infringement
         of the rules relating to the award of public contracts which is established after the contract has been awarded must be determined
         in accordance with national law. In its view, where the contract has been awarded the review body is confined pursuant to
         Paragraph 117(3) of the BVergG to making a finding as to the existence of the alleged illegality. It thus concludes that this
         question must be answered in the negative. 
         
         
         88
            
         On the other hand, the applicants in the main proceedings and the Commission consider that if, after the tenders have been
         submitted or opened, the review body declares a decision relating to an award criterion unlawful, the contract cannot be awarded
         on the basis of the invitation to tender and the only option is to cancel the invitation to tender. Any amendment to the criteria
         would have an effect on the evaluation of the tenders, whereas the tenderers would no longer have the possibility of adapting
         their tenders, prepared at a completely different time and in different circumstances and on the basis of different criteria.
         The only option would therefore be to start the entire tender procedure afresh. 
         Findings of the Court
         
         
         89
            
         It should be noted that a finding that a decision relating to an award criterion is unlawful does not always lead to the annulment
         of that decision. 
         
         
         90
            
         As a result of the option granted to Member States under Article 2(6) of Directive 89/665 of providing that, after the conclusion
         of a contract following its award, the powers of the body responsible for the review procedures are to be limited to awarding
         damages to any person harmed by an infringement, where the review proceedings are instituted after the conclusion of the contract
         and the Member State concerned has made use of the option, if the review body finds that a decision relating to an award criterion
         is unlawful, it may not annul that decision, but only award damages. 
         
         
         91
            
         It is clear from the explanations provided by the Bundesvergabeamt that the fourth question concerns the situation where the
         consequence of a finding that a decision relating to an award criterion is unlawful is the annulment of that decision. It
         must thus be understood as asking whether the Community legislation on public procurement requires the contracting authority
         to cancel an invitation to tender where it transpires in review proceedings under Article 1 of Directive 89/665 that a decision
         relating to one of the award criteria laid down by that authority is unlawful and it is therefore annulled by the review body.
         
         
         
         92
            
         For the purpose of answering the question as reformulated, it should be pointed out that the Court has already held that the
         principles of equal treatment and transparency of tender procedures imply an obligation on the part of contracting authorities
         to interpret the award criteria in the same way throughout the procedure (see, to that effect, in particular  
          SIAC Construction , paragraph 43). 
         
         
         93
            
         As far as the award criteria themselves are concerned, it is  
          a fortiori   clear that they must not be amended in any way during the tender procedure. 
         
         
         94
            
         It follows that where the review body annuls a decision relating to an award criterion, the contracting authority cannot validly
         continue the tender procedure leaving aside that criterion, since that would be tantamount to amending the criteria applicable
         to the procedure in question. 
         
         
         95
            
         Therefore, the answer to the fourth question must be that the Community legislation on public procurement requires the contracting
         authority to cancel an invitation to tender if it transpires in review proceedings under Article 1 of Directive 89/665 that
         a decision relating to one of the award criteria laid down by that authority is unlawful and it is therefore annulled by the
         review body. 
         
         Costs
         96
            
         The costs incurred by the Austrian, Netherlands and Swedish Governments and by the Commission, which have submitted observations
         to the Court, are not recoverable. Since these proceedings are, for the parties to the main proceedings, a step in the action
         pending before the national court, the decision on costs is a matter for that court. 
         
         On those grounds, 
         
         
         
            
            THE COURT (Sixth Chamber),
         
         
         in answer to the questions referred to it by the Bundesvergabeamt by order of 13 November 2001, hereby rules: 
         
            
            1.
               The Community legislation on public procurement does not preclude a contracting authority from applying, in the context of
               the assessment of the most economically advantageous tender for a contract for the supply of electricity, an award criterion
               with a weighting of 45% which requires that the electricity supplied be produced from renewable energy sources. The fact that
               that criterion does not necessarily serve to achieve the objective pursued is irrelevant in that regard.   On the other hand, that legislation does preclude such a criterion where  
            
            
            ─
            it is not accompanied by requirements which permit the accuracy of the information contained in the tenders to be effectively
            verified, 
            
            
            
            ─
            it requires tenderers to state how much electricity they can supply from renewable energy sources to a non-defined group of
            consumers, and allocates the maximum number of points to whichever tenderer states the highest amount, where the supply volume
            is taken into account only to the extent that it exceeds the volume of consumption expected in the context of the procurement.
            
            
             It is for the national court to determine whether, despite the contracting authority's failure to stipulate a specific supply
               period, the award criterion was sufficiently clearly formulated to satisfy the requirements of equal treatment and transparency
               of procedures for awarding public contracts.  
            
            
            2.
              The Community legislation on public procurement requires the contracting authority to cancel an invitation to tender if it
               transpires in review proceedings under Article 1 of Directive 89/665 that a decision relating to one of the award criteria
               laid down by that authority is unlawful and it is therefore annulled by the review body.  
            
            
                  Skouris
               
               
                  Gulmann 
               
               
                  Puissochet 
               
            
                  Schintgen
               
               
                  Colneric 
               
               
                  
               
            
                  
               
               
                  
               
               
                  
               
            
                  
               
               
                  
               
               
                  
               
            
                  
               
               
                  
               
               
                  
               
            
            
            
            
            
            
            
            
         
         
         Delivered in open court in Luxembourg on 4 December 2003. 
         
         
         
         
                  R. Grass 
               
               
                  V. Skouris  
               
            
         
         
         
                  Registrar
               
               
                  President
               
            
      
      
          1 –
            
             Language of the case: German.