Guidelines for Standardization ofElectronics Product Eco-Efficiency Indicators
Ver.2.1

March 2009
Revised in July 2009
Japan Eco-efficiency ForumWG for Standardization of ‘Factor-X’
Sanyo Electric Co., Ltd., Sharp Corporation, Toshiba Corporation, NEC Corporation,
Panasonic Corporation, Hitachi, Ltd., Fujitsu Limited, Mitsubishi Electric Corporation

Contents

Introduction............................................................................................................................................ 1
1. Purpose .............................................................................................................................................. 3

2. Name/Method of Indication............................................................................................................ 3
3. Definition of the 'Common Factor' ............................................................................................... 3
4. Application of the 'Common Factor' ............................................................................................ 5
5. Method for Calculating the 'Common Factor' of Individual Target Products ...................... 5
5-1. 'Common Factor' for Air Conditioners ................................................................................. 7
5-1-1. Fundamental Function
5-1-2. Utility Duration
5-1-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product5-2. 'Common Factor' for Refrigerators ....................................................................................... 8
5-2-1. Fundamental Function
5-2-2. Utility Duration
5-2-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product5-3. 'Common Factor' for Lamps ................................................................................................... 9
5-3-1. Fundamental Function
5-3-2. Utility Duration
5-3-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product5-4. 'Common Factor' for Lighting Equipment ......................................................................... 10
5-4-1. Fundamental Function
5-4-2. Utility Duration
5-4-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product5-5. 'Common Factor' for Washing/Drying Machines ............................................................. 12
5-5-1. Fundamental Function
5-5-2. Utility Duration
5-5-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product5-6. 'Common Factor' for Personal Computers ....................................................................... 13
5-6-1. Fundamental Function
5-6-2. Utility Duration
5-6-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product6. Revision of Guidelines ................................................................................................................. 14
7. History of Revisions.........................................................................................................................14

Introduction
The idea of ‘eco-efficiency,’ which was proposed by the WBCSD*, has gained importance as anintegral concept for social systems and business management - seeking to strike a balance between
conservation of the environment and economic activities.
We, the eight companies involved in this initiative, have applied the concept of ‘eco-efficiency’ toa wide variety of electrical appliances - taking on the role of world leaders and seeking to manufacture
products which can simultaneously achieve improvements in performance and usability while reducing
the adverse impact on the environment - using ‘Factor-X.’ However, because the methods used to
calculate and display ‘Factor-X’ in the past have varied, depending on the company, and because not all
the data used in the calculations were disclosed, the results were, unfortunately, sometimes difficult for
consumers to understand.
In response, a variety of measures to uniform ‘Factor-X’ were therefore implemented. First, inNovember 2006, five electrical appliance manufacturers (those companies marked with **) chose four
categories of products which used a lot of electricity in the home, namely air conditioners, refrigerators,
lamps (light bulbs and fluorescent tubes), and lighting equipment (including lamps), and developed themethod used for calculating indicators and other relevant details.
Specifically, these companies established ‘standardization guidelines’ with which to develop the
method of calculation used for indicators and other relevant details under certain operating conditions inorder to quantify the ‘functional value’ (the sum total of all benefits obtained from its fundamental
functions) and the ‘environmental impact’ (the amount of greenhouse gas emissions over the life cycle ofthe product), thereby deriving each product’s ‘eco-efficiency’, which could then serve as the basis forcalculating ‘Factor-X.’
Then, as the second step towards standardization, in April 2007, the ‘WG for Standardization of
Factor-X’ was created within the ‘Japan Eco-efficiency Forum’ (Chairman: Professor Ryoichi Yamamotoof the University of Tokyo), for which the Japan Environmental Management Association for Industry
serves as the secretariat. The eight existing electrical appliance manufacturers mentioned above allparticipated in the Forum and have made efforts to develop new ‘standardization guidelines’ for threefurther categories of products: televisions (which consume a lot of electricity in the home), washing/drying
machines (for which demand is expected to increase), and personal computers (whose use has grown
rapidly and which are of particular interest to consumers). These products follow on from the four
categories of products already mentioned above.
We have now finished our examination of the major issues affecting two of these additional
categories (washing/drying machines and personal computers) and have completed new ‘standardization
guidelines’ for six categories of products in total, including the four categories mentioned above. As amatter of course, the existing standardization guidelines already established for the first four categories of
products will continue to be applied. However, despite repeated in-depth discussions, no guidelines have
yet been made for televisions as too many difficult issues still remain unresolved.

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Using these guidelines, it is possible to clearly indicate the level of improvement that has beenachieved regarding the ‘eco-efficiency’ of current products, in terms of both their improved value(functions) and their reduced environmental impact (the amount of greenhouse gas emissions),
compared with previous product models from the same company. At the moment, it is not yet possible to
make a direct comparison with products manufactured by other companies because past products used
as reference data vary from company to company. However, we can still use such comparisons as a
useful indication of the ‘replacement effect’ for products manufactured by the same company.
Going forward, as part of our ‘Japan Eco-efficiency Forum’ activities, we will continue our efforts
to publicize, disseminate and raise awareness about standardization among all relevant industry
associations and other organizations, as best we can, while proactively engaging in further international
standardization activities.
March 2009

WG for Standardization of ‘Factor-X,’ Japan Eco-efficiency ForumSanyo Electric Co., Ltd., Sharp Corporation, Toshiba Corporation**, NEC Corporation
Panasonic Corporation**, Hitachi, Ltd.**, Fujitsu Limited**, Mitsubishi Electric Corporation***World Business Council for Sustainable Development

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1. Purpose
These guidelines have been established in order to give the method of calculation and other relevant
details regarding ‘eco-efficiency’ (which presents the value of each specific product in numeric terms,
compared with its environmental impact), and ‘Factor-X’ (which expresses the relative level of
improvement in ‘eco-efficiency’ in simple numeric terms), and to provide a uniformed eco-efficiency
indicator which can help users select and purchase more environmentally conscious products.

2. Name/Method of Indication
1) The eco-efficiency indicator, or ‘Factor-X’ (the indicator which represents the level of improvementin eco-efficiency of the target product), is uniformed under the following name, and the marks andsimple numeric values (defined separately) should be used for indication purposes.
[Name]: Common Factor
2) Each company can individually make use of its own, specific eco-efficiency indicators, already inuse, as appropriate. However, the company concerned must state that this is the company’s own
specific eco-efficiency indicator.
3) For any product to which the ‘Common Factor’ is applied, the company’s specific eco-efficiency
indicator can be indicated together with the ‘Common Factor.’4) The size, location and other requirements for the indication of the ‘Common Factor’ on products
shall be defined separately.

3. Definition of the ‘Common Factor’1) The ‘Common Factor’ is expressed by the following definition and formulae:[Definition]: The ratio of the eco-efficiency (expressed as the ratio of the ‘Functional value’ tothe ‘Environmental impact’ of the product) of the evaluated product compared tothe same type of product for the specified reference year

Eco-efficiency

Common Factor=

Functional value of the productEnvironmental impact of the productEco-efficiency of the evaluated product=・・Formula 1・・Formula 2

Eco-efficiency of the same type of productfor the reference year32) As a general rule, the ‘Functional value of the product (the numerator of Eeco-efficiency’ in
Formula 1, as shown above) represents the sum total of all particular benefits obtained from theuse of the product (product specific functions), as defined for each product category in Clause 5,
based on consideration of the key functions and performance which best represent thecharacteristics of the product. The ‘Functional value of the product’ may also be expressed as the
product of the performance of the key functions (‘Fundamental function’) multiplied by the period
for which those functions are fulfilled (‘Utility duration’).
3) As a general rule, in order to determine the ‘Fundamental function’, as described in the preceding
paragraph, the following 3 conditions must be taken into consideration:・ the functions must clearly indicate the characteristics of the target product and be intuitively
understandable for the general consuming public;
・ the product of these functions multiplied by the ‘Utility duration’ must confer some practicalsense of the ‘Functional value of the product’ (the benefits to consumers); and・ the functions must be positively related with the ‘Environmental impact of the product’ (thedenominator of ‘Eco-efficiency’) and set at such a level that the degree of difficulty in improving
both the numerator and the denominator is as equal as possible.
4) In addition, the ‘Fundamental function’ needs not necessarily be limited to just one per product.
For example, if the users’ needs are divided between the functional capability offered by the
product and the usability of the product, the ‘Common Factors’ may be set separately (based on
both the functional capability and the usability) so that the indicators provided can help users when
making a selection that meets their needs.
5) Similarly, as a general rule, the ‘Utility duration’ can be defined as the number of years or theperiod of time for which the product can normally be used in an ordinary household under normal
service conditions, or the corresponding number of times of use, etc. However, in the case of a
product for which figures in a catalog or other reference materials are used instead and where theperiod of time for which spare parts are kept in stock is officially defined, the duration may be set
as the ‘period for which spare parts are kept in stock + 1 year’, providing the source is clearly
indicated.
6) For the time being, the denominator of ‘Eco-efficiency’ in Formula 1, given above, shall be the‘amount of greenhouse gas emissions over the life cycle of the product’. This shall be calculated
as the amount of greenhouse gas emissions, such as CO2, estimated using the global warming
factors for each phase throughout the product’s life cycle (for which the relevant details shall bedefined in Clause 5 for each product category). In addition, for those products subject to acomparative evaluation, the same database should be used for all calculations and the source orfoundation of the original measurement units used and the evaluation boundaries of all inventory
data used must be stated as clearly as possible.

47) A target product for comparison should be chosen, in line with the purpose of these guidelines,
and used for evaluation purposes for the reference year. A fictitious product, which can be derived
from a common model already in production or from a number of models, may be created as atarget and used as a standard model, for comparison.

4. Application of the ‘Common Factor’1) The products to which these guidelines are applied shall be selected on the basis of their energy
consumption and the level of interest shown by consumers. The companies involved shallcalculate the ‘Common Factors’ using their own methods, and the common items required for
calculation and the common environmental intensity data used (hereinafter referred to as the‘common intensity data’) shall be applied to the product, subject to agreement among thecompanies, in order to keep the numerical variations in the calculation processes and the resulting
figures (based on common inventory data relating to the selected product) within an appropriate
range (rough indication: up to approx. ±10% for ‘Eco-efficiency’ and ±3% for the ‘Common
Factor’).
2) The companies which apply these guidelines shall calculate the ‘Common Factor’ using thecommon items and the ‘common intensity data’ described in the preceding paragraph. If a newcompany desires to apply these guidelines, approval shall be given subject to the consent of theexisting companies which have already adopted these guidelines.

5. Method for Calculating the ‘Common Factor’ of Individual Target Products
1) These guidelines shall be applied as follows, starting with the following six categories of products
subject to consent, as described in Clause 4. If, in future, these guidelines are applied to any otherproduct, the calculation method used should be examined on a case-by-case basis in accordancewith the above requirements:
・ Air conditioners;
・ Refrigerators;
・ Lamps (light bulbs and fluorescent lamps);
・ Lighting equipment (including lamps);
・ Washing/drying machines; and・ Personal computers.
2) This section provides the ‘Common Factor’ for each category of applicable products inaccordance with the description in the above sections. At the moment, the calculation for‘Eco-efficiency’ used for the ‘Common Factor’ applied to the six categories of products mentioned
above is as shown in Formula 3, below, and the details may be changed as appropriate:5

Eco-efficiency =(Fundamental function)

Ｘ(Utility duration)

・・Formula 3

Amount of greenhouse gas emissions
over the life cycle of the product3) When calculating the ‘Amount of greenhouse gas emissions over the life cycle of the product’ (thedenominator of ‘Eco-efficiency’), the life cycle of the applicable product shall be divided into thefive phases shown in Table 1, below. The amount of greenhouse gas emissions can then be
calculated for each item in each phase and aggregated. When calculating the amount ofgreenhouse gas emissions, the amount of emissions of various greenhouse gases which have aneffect on global warming (such as CO2) must be included as defined in Clause 3, whereappropriate, at the discretion of the company.
Table 1: Items taken into consideration during each phase of the product life cycle
Phases during
the life cycle
Material/partmanufacture

Unit(Example)

Phases during thelife cycle

kg

Product
manufacture

Stainless steelkg

Producttransportation

Copperkg

Item
Steel (plated
steel)

sheet

Use
Aluminumkg

Other metals
PP
PVC
PS
EPS
ABS
Other thermoplastic
resinsRubber elastomers
Thermoset resins
Cardboards
Expandedpolystyrene
Paper
Glass
Other materials
Circuitboards/electronic parts

kg
kg
kg
kg
kg
kg

Disposal/
recycling

Item
Energyconsumption at thetime ofmanufacture
Transportation
distancePower
consumption
Consumablesupplies
Landfill
Destruction
Recovery

Unit(Example)
MJ

km
kWh
kg
MJ
MJ
MJ

kg
kg
kg
kg
kg
kg
kg
kg
kg

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5-1. ‘Common Factor’ for Air Conditioners
・ The type of the products shall be limited to ‘home air conditioners.’
・ For the time being, the reference year shall be FY2000.
5-1-1. Fundamental Function
・ The function shall be the ‘numerator of the cooling and heating performance calculation
formula derived using the APF (Annual Performance Factor) method’ and shall be
expressed in units of [kWh].
・ ‘APF’ is the value of the cooling and heating capacity required for the air conditioner
throughout one year of use, divided by the energy consumed by the air conditioner (theperiodic energy consumption), which represents the total quantity of heat added to or
removed from the room by the air conditioner.
5-1-2. Utility Duration
・ The utility duration (normal duration of use) shall be 10 years.
・ The duration is equal to the ‘period for which spare parts are kept in stock (9 years)’ in
accordance with the ‘Fair Competition Codes and the Ordinance for Enforcement of
Indications on Home Electric Appliances’ established by the ‘Home Electric Appliances Fair
Trade Conference’ plus 1 year.
5-1-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product・ The amount shall be the total amount of all greenhouse gas emissions calculated
throughout all the following phases:[Material/parts manufacturing]]
・ For electronic parts, it is deemed that the amount of greenhouse gas emissions fromelectronic parts have only a minor impact on the overall evaluation, at a level where
variations in the calculation results can be ignored, the greenhouse gas emissions shall becalculated for the single item of 'circuit boards/electronic parts'.
・ Refrigerants and other materials shall be included in ‘other materials.’[Product manufacturing]
For product manufacturing, it is deemed that the amount of greenhouse gas emissions fromeach processes for production have only a minor impact on the overall evaluation, at a level
where variations in the calculation results can be ignored, the greenhouse gas emissions shallbe calculated for the single item of 'energy consumption at the time of manufacturing'.
[Product transportation]
・ As a general rule, the amount of greenhouse gas emissions shall be calculated inaccordance with the transportation method actually used (such as airplanes, ships, vehicles
etc.), including the transportation of used products.
[Use]
・ The power consumption shall be measured in accordance with ‘JIS C 9612:2005 Air
conditioners - Test and method of calculation for the efficiency of periodic energy
7consumption.’[Disposal/recycling]・ If the product can be recycled and reused as a material, etc., it shall be deemed that theamount of material or energy recovered and dissipated in recycling process may also betaken into consideration and included in the calculation.
・ For refrigerants and other materials, the amount of greenhouse gas emissions shall becalculated after taking collection into account.

5-2. ‘Common Factor’ for Refrigerators
・ The type of the products shall be limited to household freezing and refrigerating appliances.
・ For the time being, the reference year shall be FY2006.
5-2-1. Fundamental Function
・ The function shall be the ‘adjusted inner volume,’ expressed in units of [l (liter)].
・ The ‘adjusted inner volume’ is the value equal to the rated inner volume of the freezer
compartment multiplied by 2.15, 1.85 or 1.55 for the freezer compartment of three-, two- or
one-star types, respectively, added to the rated inner volume of any storage areas otherthan the freezer compartment.
・ The calculation standards shall be as provided in the Ministry of International Trade andIndustry Notice No. 704 dated December 22, 1999, relating to the Energy Saving Act, ‘The
Judgmental Standards of Manufacturers on Improvement of Performance of ElectricHousehold Refrigerators’ (final amendment: the Ministry of Economy, Trade and Industry
Notice No. 53, March 29, 2006) and the Ministry of International Trade and Industry NoticeNo. 705 also dated December 22, 1999, ‘The Judgmental Standards of Manufacturers on
Improvement of Performance of Electric Household Refrigerators’ (final amendment: theMinistry of Economy, Trade and Industry Notice No. 54, March 29, 2006).
5-2-2. Utility Duration
・ The utility duration (normal duration of use) shall be 10 years.
・ The duration is equal to the ‘period for which spare parts are kept in stock (9 years)’ in
accordance with the ‘Fair Competition Codes and the Ordinance for Enforcement of
Indications on Home Electric Appliances’ established by the ‘Home Electric Appliances Fair
Trade Conference’ plus 1 year.
5-2-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product・ The amount shall be the total amount of all greenhouse gas emissions calculated
throughout all the following phases:[Material/parts manufacturing]]
・ For electronic parts, it is deemed that the amount of greenhouse gas emissions fromelectronic parts have only a minor impact on the overall evaluation, at a level where8variations in the calculation results can be ignored, the greenhouse gas emissions shall becalculated for the single item of 'circuit boards/electronic parts'.
・ Refrigerants and other materials shall be included in ‘other materials.’[Product manufacturing]
For product manufacturing, it is deemed that the amount of greenhouse gas emissions fromeach processes for production have only a minor impact on the overall evaluation, at a level
where variations in the calculation results can be ignored, the greenhouse gas emissions shallbe calculated for the single item of 'energy consumption at the time of manufacturing'.
[Product transportation]
・ As a general rule, the amount of greenhouse gas emissions shall be calculated inaccordance with the transportation method actually used (such as airplanes, ships, vehicles
etc.), including the transportation of used products.
[Use]
・ The power consumption shall be measured in accordance with ‘JIS C9801:2006 Household
refrigerating appliances -- Characteristics and test methods.’[Disposal/recycling]・ If the product can be recycled and reused as a material, etc., it shall be deemed that theamount of material or energy recovered and dissipated in recycling process may also betaken into consideration and included in the calculation.
・ For refrigerants and other materials, the amount of greenhouse gas emissions shall becalculated after taking collection into account.

5-3. ‘Common Factor’ for Lamps
・ The type of the products shall be limited to incandescent bulbs and self-ballasted compact
fluorescent lamps.
・ Comparisons may be made between incandescent bulbs and self-ballasted compact
fluorescent lamps, as appropriate.
・ For the time being, the reference year shall be FY2000.
5-3-1. Fundamental Function
・ The fundamental function shall be the ‘total luminous flux,’ expressed in units of [lm(lumen)].
・ The measurement method shall be as provided in the following Japanese Industrial
Standards: ‘JIS C7801 Measuring methods of lamps for general lighting’5-3-2. Utility Duration
・ The utility duration (normal duration of use) shall be the ‘rated life’, expressed in units of [h(hour)].
・ The ‘rated life’ is the average value for the lifetime of a number of lamps tested underpredetermined testing conditions, and refers to data published in a catalog or any other9such reference material which correspond to the utility duration in an ordinary household.
・ The definition shall be as provided in the Japanese Industrial Standards, such as ‘JIS
C7501’, ‘C7617-2’ and ‘C7620-2.’
5-3-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product・ The amount shall be the total amount of all greenhouse gas emissions calculated
throughout all the following phases:[Material/parts manufacturing]]
・ For electronic parts, it is deemed that the amount of greenhouse gas emissions fromelectronic parts have only a minor impact on the overall evaluation, at a level where
variations in the calculation results can be ignored, the greenhouse gas emissions shall becalculated for the single item of 'circuit boards/electronic parts'.
[Product manufacturing]
For product manufacturing, it is deemed that the amount of greenhouse gas emissions fromeach processes for production have only a minor impact on the overall evaluation, at a level
where variations in the calculation results can be ignored, the greenhouse gas emissions shallbe calculated for the single item of 'energy consumption at the time of manufacturing'.
[Product transportation]
・ As a general rule, the amount of greenhouse gas emissions shall be calculated inaccordance with the transportation method actually used (such as airplanes, ships, vehicles
etc.), including the transportation of used products.
[Use]
・ The power consumption shall be measured as ‘input wattage’ of ‘JIS C7801 Measuring
Methods of Lamps for General Lighting.’[Disposal/recycling]・ If the product can be recycled and reused as a material, etc., it shall be deemed that theamount of material or energy recovered and dissipated in recycling process may also betaken into consideration and included in the calculation.

5-4. ‘Common Factor’ for Lighting Equipment
・ The type of the products shall be limited to home lighting fixtures.
・ The type of lamp specified by the manufacturer and the number of bulbs/tubes consumed
during the ‘Utility Duration’ under normal service conditions should also be considered.
・ For the time being, the reference year shall be FY2000.
5-4-1. Fundamental Function
・ The fundamental function shall be the ‘total luminous flux,’ expressed in units of [lm(lumen)].
・ For measurement purposes, the type of lamp specified by the manufacturer should be
used.
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・ The measurement method shall be as provided in the ‘Japan Luminaires Association’s
technical data 128-1999’ and following the Japanese Industrial Standards:‘JIS C8105 Luminaires’‘JIS C8020 Method of calculation on Fluorescent luminaire efficacy index’‘JIS C7612 lluminance measurements for lighting installations’
5-4-2. Utility Duration
・ The utility duration (normal duration of use) shall be 10 years.
・ The duration is equal to the ‘period for which spare parts are kept in stock (9 years)’ in
accordance with the ‘Fair Competition Codes and the Ordinance for Enforcement of
Indications on Home Electric Appliances’ established by the ‘Home Electric Appliances Fair
Trade Conference’ plus 1 year.
5-4-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product・ The amount shall be the total amount of all greenhouse gas emissions calculated
throughout all the following phases:[Material/parts manufacturing]・ For electronic parts, it is deemed that the amount of greenhouse gas emissions fromelectronic parts have only a minor impact on the overall evaluation, at a level where
variations in the calculation results can be ignored, the greenhouse gas emissions shall becalculated for the single item of 'circuit boards/electronic parts'.
[Product manufacturing]
For product manufacturing, it is deemed that the amount of greenhouse gas emissions fromeach processes for production have only a minor impact on the overall evaluation, at a level
where variations in the calculation results can be ignored, the greenhouse gas emissions shallbe calculated for the single item of 'energy consumption at the time of manufacturing'.
[Product transportation]
・ As a general rule, the amount of greenhouse gas emissions shall be calculated inaccordance with the transportation method actually used (such as airplanes, ships, vehicles
etc.), including the transportation of used products.
[Use]
・ The power consumption shall be measured in accordance with the ‘Japan Luminaires
Association’s technical data 128-1999’ mentioned above.
[Disposal/recycling]・ If the product can be recycled and reused as a material, etc., it shall be deemed that theamount of material or energy recovered and dissipated in recycling process may also betaken into consideration and included in the calculation.

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5-5. ‘Common Factor’ for Washing/Drying Machines
・ The type of the products shall be limited to single-tub home washing and drying machines.
・ For the time being, the reference year shall be FY2000.
5-5-1. Fundamental Function
・ The function shall be the ‘washed/dried volume’ (tentative term) defined by the following
formula, expressed in units of [kg].
・ For the time being, the ‘washed/dried volume [kg]’ shall be deemed equal to 365 × (the sumof the ‘washed volume [kg]’ + the ‘dried volume [kg]’).
5-5-2. Utility Duration
・ The utility duration (normal duration of use) shall be 7 years.
・ The duration is equal to the ‘period for which spare parts are kept in stock (6 years)’ in
accordance with the ‘Fair Competition Codes and the Ordinance for Enforcement of
Indications on Home Electric Appliances’ established by the ‘Home Electric Appliances Fair
Trade Conference’ plus 1 year.
5-5-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product・ The amount shall be the total amount of all greenhouse gas emissions calculated
throughout all the following phases:[Material/parts manufacturing]]
・ For electronic parts, it is deemed that the amount of greenhouse gas emissions fromelectronic parts have only a minor impact on the overall evaluation, at a level where
variations in the calculation results can be ignored, the greenhouse gas emissions shall becalculated for the single item of 'circuit boards/electronic parts'.
・ When calculating the amount of greenhouse gas emissions for ‘circuit boards/electronicparts,’ the ‘common intensity data’ (to be determined) should be used.
・ Refrigerants and other materials shall be included in ‘other materials.’[Product manufacturing]
For product manufacturing, it is deemed that the amount of greenhouse gas emissions fromeach processes for production have only a minor impact on the overall evaluation, at a level
where variations in the calculation results can be ignored, the greenhouse gas emissions shallbe calculated for the single item of 'energy consumption at the time of manufacturing'.
[Product transportation]
・ As a general rule, the amount of greenhouse gas emissions shall be calculated inaccordance with the transportation method actually used (such as airplanes, ships, vehicles
etc.), including the transportation of used products.
[Use]
・ The power consumption shall be measured in accordance with the voluntary standards of
the Japan Electrical Manufacturers' Association, the ‘Washing Performance Evaluation
Method’ and the ‘Drying Performance Evaluation Method’ (revised on July 11, 2008).
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・ In the case of ‘consumable supplies,’ evaluation should be performed for ‘detergents’ and‘water,’ and calculations must be carried out using the ‘common intensity data’ (to be
determined).
・ Until standard values are set by the industry, the ‘frequency of use’ shall be once/day.
[Disposal/recycling]・ If the product can be recycled and reused as a material, etc., it shall be deemed that theamount of material or energy recovered and dissipated in recycling process may also betaken into consideration and included in the calculation.
・ For refrigerants and other materials, the amount of greenhouse gas emissions shall becalculated after taking collection into account.

5-6. ‘Common Factor’ for Personal Computers
・ The type of the products shall be limited to laptop computers.
・ Since personal computers are a multifunctional product associated with a great variety ofusers’ needs, two types of ‘Common Factors’ should be established to represent bothprocessing performance and mobility, respectively.
・ For the time being, the reference year shall be FY2005 and FMV-C6200 shall be used as areference product.
5-6-1. Fundamental Function
・ For determination of the ‘Common Factor’ used to represent processing performance, theperformance of the personal computer should be taken into consideration and the results ofa standard benchmark test (ENERGY STAR Ver. 5.0 or later) should be used as areference.
・ For determination of the ‘Common Factor’ used to represent mobility, the mobility
performance of the personal computer should be taken into consideration, expressed as
the ratio of the operating time of the batteries (JEITA’s Battery Operating Time
Measurement Method Ver. 1.0)*1 to the weight of the device.

*1; http://it.jeita.or.jp/mobile/
5-6-2. Utility Duration
・ For the time being, the utility duration (normal duration of use) shall be 4 years, inaccordance with the EcoLeaf BJ 01 PCR (Product Category Rule).
5-6-3. Amount of Greenhouse Gas Emissions over the Life Cycle of the Product・ The amount shall be the total amount of all greenhouse gas emissions calculated
throughout all the following phases:[Material/parts manufacturing]]
・ No LCDs, HDDs or batteries shall be included in the calculation of the amount ofgreenhouse gas emissions for ‘circuit boards/electronic parts’.
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・ When calculating the amount of greenhouse gas emissions for LCDs, HDDs and batteries,
these 3 items shall be added to the ‘material/part manufacture’ phase in Table 1 as‘common original units’ (to be determined).
[Product manufacturing]
For product manufacturing, it is deemed that the amount of greenhouse gas emissions fromeach processes for production have only a minor impact on the overall evaluation, at a level
where variations in the calculation results can be ignored, the greenhouse gas emissions shallbe calculated for the single item of 'energy consumption at the time of manufacturing'.
[Product transportation]
・ As a general rule, the amount of greenhouse gas emissions shall be calculated inaccordance with the transportation method actually used (such as airplanes, ships, vehicles
etc.), including the transportation of used products.
[Use]
・ The power consumption shall be measured in accordance with the EcoLeaf BJ 01 PCR(Product Category Rule).
[Disposal/recycling]・ If the product can be recycled and reused as a material, etc., it shall be deemed that theamount of material or energy recovered and dissipated in recycling process may also betaken into consideration and included in the calculation.

6. Revision of Guidelines
As a general rule, these guidelines shall be reviewed every two years, taking into account the status of
implementation of these guidelines and prevailing social conditions, and then implementing appropriate
measures on the basis of the results (unless an urgent need arises because of changes in social
conditions or any other reasons, in which case a review and revision can be performed without waiting
the full two years).

7. History of Revisions

2009.7.22

The descriptions in 5-3-1 ‘Measurement Method’ and 5-3-3 ‘Use’ were revised following
the issuance of ‘JIS C7801 –Measuring Methods of Lamps for General Lighting’ as ofJune 20, 2009.

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