the impact of wind power generation on the electricity price in germany abstract this paper investigates the relationship between intermittent wind power generation and electricity price behaviour in germany using a garch model i evaluate the effect of wind electricity generation on the level and the volatility of the electricity price in an integrated approach the results show that variable wind power reduces the price level but increases its volatility this paper s results also indicate that regulatory change has stabilised the wholesale price the electricity price volatility has decreased in germany after a modification of the marketing mechanism of renewable electricity this gives confidence that further adjustments to regulation and policy may foster a better integration of renewables into the power system

new perspectives on the innovation strategies of multinational enterprises lessons for technology policy in europe abstract the aim of this contribution is to learn more about changes in the innovation strategies of large multinational corporations whereby one focus is on internationalization aspects as sources for our analyses we reviewed the main empirical studies and gathered information and insights from 21 corporations our results show firstly that the internationalization of research and technology is still characterized by triadization involving companies from the us the european union and japan secondly qualitative motives are increasingly driving r d location decisions like learning from technological excellence and lead markets and dynamic interactions within the value chain thirdly the process of internationalization in research and technology has been accompanied by an increasingly selective focus on a very few locations and the concentration of innovation activities on worldwide centers of excellence we conclude that these changes in the innovation strategies of large multinational companies put several topics on the agenda for technology policy in europe 1 a stronger focus on extra european collaboration and mobility 2 strengthening the attractiveness of the european union to foreign r d investment and 3 the absorptive capacities of r d organizations in europe 4 a stronger integration of different policy areas and of indirect policy measures 5 as well as the establishment of a transparent and global framework for policy coordination and priority setting worldwide

patterns of internationalisation of corporate technology location vs home country advantages given the trends towards increasing globalisation of markets and of production the globalisation of technology remains a subject of considerable interest to analysts and policy makers in the 1990s this paper provides some new empirical observations for debate and discussion on the patterns of technological activities of large firms outside their home countries it is based on a systematic analysis of the us patenting activities of 220 of the most internationalised firms in terms of their technology in the 1990s although firms are active outside their home countries in the high technology fields such as computers pharmaceuticals telecommunications image and sound and materials quite a sizeable proportion of their foreign activities are concerned with process and machinery technologies moreover a comparison of the technological advantage of the company at home and the advantage of the location shows that in a large majority of cases firms tend to locate their technology abroad in their core areas where they are strong at home these results suggest that adapting products and processes and materials to suit foreign markets and providing technical support to off shore manufacturing plants remain major factors underlying the internationalisation of technology they are also consistent with the notion that firms are increasingly engaging in small scale activities to monitor and scan new technological developments in centres of excellence in foreign countries within their areas of existing strength however there is little evidence to suggest that even these most internationalised firms routinely go abroad to compensate for their weakness at home

electricity prices large scale renewable integration and policy implications abstract this paper investigates the effects of intermittent solar and wind power generation on electricity price formation in germany we use daily data from 2010 to 2015 a period with profound modifications in the german electricity market the most notable being the rapid integration of photovoltaic and wind power sources as well as the phasing out of nuclear energy in the context of a garch in mean model we show that both solar and wind power granger cause electricity prices that solar power generation reduces the volatility of electricity prices by scaling down the use of peak load power plants and that wind power generation increases the volatility of electricity prices by challenging electricity market flexibility

drivers of electricity price dynamics comparative analysis of spot and futures markets abstract against the backdrop of numerous evidence that variable renewable generation decreases electricity prices and increases price volatility this paper assesses the drivers of electricity prices in spot and futures markets focusing on the german electricity markets we take into account nonlinearities in electricity prices by means of structural breaks and threshold regressions we find that short run and medium long run price drivers differ and more importantly that they vary over time in the case of the spot market the determinants of prices are renewable infeed and electricity demand while in the futures market the main drivers are natural gas coal and carbon prices our results give relevant insights for market participants who seek to optimize procurement selling strategies in the spot market and use the futures market to hedge against spot price volatility which has increased due to a higher renewable generation

an analysis of the decline of electricity spot prices in europe who is to blame abstract the european electricity markets are going through a phase of agitating transition which is shaped by different key factors such as the expansion of renewable energies the changes in the eu carbon trading scheme and the european market integration in addition markets are affected by the volatile prices of primary energy carriers e g gas and coal the development of these different factors led to a decline of german wholesale electricity prices of almost 40 from about 51 mwh in 2011 to 31 mwh in 2015 the goal of this study is to analyze the contribution of different price drivers to this decline thus an agent based modeling and a regression approach are applied to investigate the effect of price drivers and to verify model results by comparing both approaches our results show that against the public perception the impact of carbon and coal prices on german electricity prices has been twice as high as the renewable expansion between 2011 and 2015 furthermore if carbon and coal prices do not recover to at least the level of 2011 electricity prices will remain on the current low level complicating the economic operation of gas power plants

credible enticements can host governments tailor multinational firms organizations to suit national objectives abstract this article discusses the impact of host government policy inconsistency on multinational corporations relationships with local suppliers that benefit from public funding empirical findings suggest that such relationships suffer from transactions cost disadvantages due to concerns that unexpected losses of funding may cause the suppliers to demand new contracts the findings reflect statistical tests on a structural equation latent variable model using data from a survey of 111 affiliates of mncs operating in 36 countries

the impact of intermittently renewable energy on italian wholesale electricity prices additional benefits or additional costs abstract most studies of the literature find that the development of renewable energy sources determines a decrease in the wholesale prices some authors use this finding to state that the current subsidies for renewable technologies cannot be considered as excessive by carrying out a hybrid analysis both simulation and ex post empirical analyses of the case of photovoltaic energy in italy this article demonstrates that this result cannot be generalised under market power an increase in pv production can provide benefits in terms of a wholesale price decrease only beyond a specific threshold and especially if combined with other effects otherwise it is likely that pv development could imply an increase in prices therefore on the one hand caution is necessary when using the estimated change in wholesale prices to evaluate the net cost for consumers of the supporting policies for renewables either the simulation based models or the full empirical analyses may be misleading on the other hand if decarbonisation is the main objective the energy policies should be designed in order to assure a deep and balanced penetration of the clean technologies regardless of their estimated transitory impact on wholesale prices and in the meantime reviewing the organisation of power markets

multidivisional vs metanational governance of the multinational enterprise the effective and efficient management of diversified business firms that supply multiple products and operate in multiple dynamic markets especially large multinational enterprises mnes builds upon a number of specific governance principles these governance principles allow the alignment of environmental characteristics strategy and organization given the rising need to learn from the world doz et al in their influential harvard business school press book entitled from global to metanational have proposed a new set of governance principles described under the metanational umbrella concept this paper revisits the metanational using a comparative institutional perspective here we contrast multidivisional and metanational governance principles a comparative institutional analysis suggests that the metanational s application potential in terms of actually improving the effectiveness and efficiency of mne governance may be subject to more qualification than suggested by doz et al senior mne management must therefore reflect carefully before substituting metanational governance principles for the more conventional multidivisional ones with established contributions to managerial effectiveness and efficiency

offshoring administrative and technical work new fields for understanding the global enterprise in this paper we introduce the journal of international business studies special issue on offshoring administrative and technical services ats in doing so we have attempted to locate the topic within the international business research tradition as well as suggest challenges and opportunities that the phenomenon offers to theoretical and empirical research in the field we examine the interplay of costs knowledge and innovation in the evolution of ats offshoring from modest beginnings to its current stature as an accepted business practice we suggest that understanding the continuing evolution of ats offshoring requires researchers to take into account not only the business imperative of cost saving but also a more complex set of underlying factors and potential outcomes we argue that the rapid growth of ats offshoring has brought about an accumulation of resources including financial flows knowledge infrastructure and human capital to create new platforms for knowledge creation and innovation low costs may characterize the initial conditions for offshoring but they also provide the basis for up market moves as firms increasingly pursue innovation based strategies we introduce the papers in the special issue as integral elements in our discussion contributing new ideas that stimulated our thinking and hopefully will do the same for others seeking to understand this emerging area of globalization and international managerial practice journal of international business studies 2009 40 887 900 doi 10 1057 jibs 2009 22

outsourcing and offshoring implications for productivity of business services this paper reviews the implications of outsourcing and offshoring for the productivity of business services in the uk official statistics indicate that business service productivity has grown by over 20 per cent in the last 7 years at the same time as employment grew by 20 per cent the paper considers possible factors that account for the simultaneous growth of employment and productivity first we discuss outsourcing and offshoring and their role in enhancing productivity through greater specialization standardization and consolidation of business processes and a shift to higher value added services outsourcing of business services is interpreted as part of corporate restructuring namely as the unbundling of corporate functions as well as vertical disintegration second as some services become more like products both low skilled and high skilled jobs are subjected to productivity growth through standardization and digitization it is argued however that the future of business service productivity is on a knife edge depending on the mix of two sources of productivity enhancement namely greater standardization and capturing value from customized solutions copyright 2006 oxford university press

market versus technology drive in r d internationalization four different patterns of managing research and development research and development are subject to different location drivers the analysis of 1021 r d units each distinguished by its main orientation towards either research or development work reveals that research is concentrated in only five regions worldwide while development is more globally dispersed our research is based on 290 research interviews and database research in 81 technology intensive multinational companies we identify two principal location rationales access to markets and access to science as the principal determinants for four trends that lead to four archetypes of r d internationalization national treasure market driven technology driven and global their organizational evolution is characterized by four trends the model is illustrated with short cases of international r d organization at kubota schindler xerox and glaxo wellcome differences in rd separation seems to contradict this trend we argue that this need not be the case for there are good reasons to maintain some independence between research and development

the role of path dependency and managerial intentionality a perspective on international business research several decades of research in the field of international business have advanced various theories and studies on the internationalization of firms our assessment of the literature on internationalization shows that the focus has been primarily on path dependency and learning based aspects of internationalization while managerial intentionality and the possibility of managers making deliberate strategic choices towards further internationalization have not been very prominent in the ib literature we argue that internationalization paths and processes should be approached as a joint outcome of management intentionality and experience based learning in other words managers are assumed to have the ability and the intention to influence the evolutionary paths of the firm we derive a future research agenda that calls for the pursuit of this promising and emergent research stream moreover we develop a model integrating managerial intentionality knowledge experience and other factors institutional and selection forces to explain heterogeneous outcomes of internationalization positions paths and processes

assessing the impact of wind generation on wholesale prices and generator dispatch in the australian national electricity market abstract growing climate change and energy security concerns are driving major wind energy deployment in electricity industries around the world despite its many advantages growing penetrations of this highly variable and somewhat unpredictable energy source pose new challenges for electricity industry operation one issue receiving growing attention is the so called merit order effect of wind generation in wholesale electricity markets wind has very low operating costs and therefore tends to displace higher cost conventional generation from market dispatch reducing both wholesale prices and conventional plant outputs this paper extends the current literature on this effect through an empirical study employing a range of econometric techniques to quantify the impacts of growing wind penetrations in the australian national electricity market nem the results suggest that wind is having a marked impact on spot market prices and while wind is primarily offsetting higher operating cost gas generation it is now also significantly reducing dispatch of emissions intensive brown coal generation great care needs to be taken in extrapolating these results to longer term implications however the study does propose a methodology for assessing this effect highlights the impacts that wind is already having on nem outcomes and suggests promising directions for future research

the globalisation of technology what remains of the product cycle model this paper reexamines two hypotheses associated with earlier versions of the product cycle model the first hypothesis that innovations are almost always located in the home country of the parent company is rejected on the basis of evidence drawn from one hundred years of u s patent office data the second hypothesis that the international dispersion of activity is led by technology leaders is historically valid however over the last twenty years technology leaders have been ahead instead in the globalization of technology that is in developing internal international networks to exploit the locationally differentiated potential of foreign centers of excellence c 1995 academic press inc copyright 1995 by oxford university press

nonlinear time series modelling an introduction recent developments in nonlinear time series modelling are reviewed three main types of nonlinear model are discussed markov switching threshold autoregression and smooth transition autoregression classical and bayesian estimation techniques are described for each model parametric tests for nonlinearity are reviewed with examples from the three types of model finally forecasting and impulse response analysis is developed

merit order effects of renewable energy and price divergence in california s day ahead and real time electricity markets abstract we answer two policy questions 1 what are the estimated merit order effects of renewable energy in the california independent system operator s caiso s day ahead market dam and real time market rtm and 2 what causes the hourly dam and rtm prices to systematically diverge the first question is timely and relevant because if the merit order effect estimates are small california s renewable energy development is of limited help in cutting electricity consumers bills but also has a lesser adverse impact on the state s investment incentive for natural gas fired generation the second question is related to the efficient market hypothesis under which the hourly rtm and dam prices tend to converge using a sample of about 21 000 hourly observations of caiso market prices and their fundamental drivers during 12 12 2012 04 30 2015 we document statistically significant estimates p value 0 01 for the dam and rtm merit order effects this finding lends support to california s adopted procurement process to provide sufficient investment incentives for natural gas fired generation we document that the rtm dam price divergence partly depends on the casio s day ahead forecast errors for system loads and renewable energy this finding suggests that improving the performance of the caiso s day ahead forecasts can enhance trading efficiency in california s dam and rtm electricity markets

semiglobalization and international business strategy if markets were either completely isolated by or integrated across borders there would be little room for international business strategy to have content distinctive from mainstream strategy but a review of the economic evidence about the international integration of markets indicates that we fall in between these extremes into a state of incomplete cross border integration that i refer to as semiglobalization more specifically most measures of market integration have scaled new heights in the last few decades but still fall far short of economic theory s ideal of perfect integration the diagnosis of semiglobalization does more than just supply a relatively stable frame of reference for thinking about the environment of cross border operations it also calls attention to the critical role of location specificity in the prospects of distinctive content for international business strategy relative to mainstream business and corporate strategy in addition it flags factors products subject to location specificity as being salient from the perspective of international business finally it highlights the scope for strategies that strive to capitalize on the large residual barriers to cross border integration as well as those that simply try to cope with them

the plunge in german electricity futures prices analysis using a parsimonious fundamental model abstract the german market has seen a plunge in wholesale electricity prices from 2007 until 2014 with base futures prices dropping by more than 40 this is frequently attributed to the unexpected high increase in renewable power generation using a parsimonious fundamental model we determine the respective impact of supply and demand shocks on electricity futures prices the used methodology is based on a piecewise linear approximation of the supply stack and time varying price inelastic demand this parsimonious model is able to replicate electricity futures prices and discover non linear dependencies in futures price formation we show that emission prices have a higher impact on power prices than renewable penetration changes in renewables demand and installed capacities turn out to be similarly important for explaining the decrease in operation margins of conventional power plants we thus argue for the establishment of an independent authority to stabilize emission prices

the merit order effect in the italian power market the impact of solar and wind generation on national wholesale electricity prices abstract italy promoted one of the most generous renewable support schemes worldwide which resulted in a high increase of solar power generation we analyze the italian day ahead wholesale electricity market finding empirical evidence of the merit order effect over the period 2005 2013 an increase of 1 gwh in the hourly average of daily production from solar and wind sources has on average reduced wholesale electricity prices by respectively 2 3 mwh and 4 2 mwh and has amplified their volatility the impact on prices has decreased over time in correspondence with the increase in solar and wind electricity production we estimate that over the period 2009 2013 solar production has generated higher monetary savings than wind production mainly because the former is more prominent than the latter however in the solar case monetary savings are not sufficient to compensate the cost of the related supporting schemes which are entirely internalized within end user tariffs causing a reduction of the consumer surplus while the opposite occurs in the case of wind

transactions cost economics and the multinational enterprise an assessment abstract this paper applies transactions cost principles to the multinational enterprise in order to ascertain its distinctive properties as a mode of economic organization the analysis helps identify just when and where contractual alternatives to the multinational firm are likely to be viable this turns out to depend upon the nature of the technology the regime of appropriability within which the firm operates and the characteristics of the markets in question transactions cost analysis is also extended to the multinational enterprise host country relationship implications for management and public policy are derived

linking product and process innovations and modes of international sourcing in global competition a case of foreign multinational firms in increasingly complex global competition multinational firms u s and foreign alike have stepped up international sourcing of components and finished products to serve various markets since an increasing portion of global competition is shaped by european and japanese multinational firms with due emphasis on product quality and manufacturing it is an opportune time to examine the like among their product development manufacturing and sourcing activities those european and japanese multinational firms marketing products in the united states are chosen as subjects of this study

lower electricity prices and greenhouse gas emissions due to rooftop solar empirical results for massachusetts abstract monthly and hourly correlations among photovoltaic pv capacity utilization electricity prices electricity consumption and the thermal efficiency of power plants in massachusetts reduce electricity prices and carbon emissions beyond average calculations pv utilization rates are highest when the thermal efficiencies of natural gas fired power plants are lowest which reduces emissions of co 2 and ch 4 by 0 3 relative to the annual average emission rate there is a positive correlation between pv utilization rates and electricity prices which raises the implied price of pv electricity by up to 10 relative to the annual average price such that the average mwh reduces electricity prices by 0 26 1 86 per mwh these price reductions save massachusetts rate payers 184 million between 2010 and 2012 the current and net present values of these savings are greater than the cost of solar renewable energy credits which is the policy instrument that is used to accelerate the installation of pv capacity together these results suggest that rooftop pv is an economically viable source of power in massachusetts even though it has not reached socket parity

the impact of renewable energies on eex day ahead electricity prices in this paper we analyze the impact of renewable energies wind and photovoltaic on the formation of day ahead electricity prices at eex we give an overview of the policy decisions concerning the promotion of renewable energy sources in germany and discuss their consequences on day ahead prices an analysis of electricity spot prices reveals that the introduction of renewable energies enhances extreme price changes in the frame of a dynamic fundamental model we show that there has been a continuous electricity price adaption process to market fundamentals furthermore the fundamental drivers of prices differ among hours with different load profiles our results imply that renewable energies decrease market spot prices and have implications on the traditional fuel mix for electricity production however the prices for the final consumers increased overall because they must pay in addition the feed in tariffs for the promotion of renewable energy

revitalising the wind power induced merit order effect to reduce wholesale and retail electricity prices in australia this paper investigates the effect of increasing the number of wind turbine generators on wholesale spot prices in the australian national electricity market s nem given the existing transmission grid from 2014 to 2025 we use a sensitivity analysis to evaluate the effect of five different levels of wind power penetration on prices ranging from scenario a no wind to scenario e that includes existing and planned wind power sufficient to meet australia s original 2020 41twh large scale renewable energy target lret we find divergence in prices between states and similar prices for nodes within states this supports the garnaut climate change review assessment on the prevalence of gold plating the intrastate transmission network and underinvesting in interstate connectivity we find that increasing wind power penetration decreases wholesale spot prices but that retail prices have increased in deregulated south australia and queensland similarly in victoria we argue that there is a pressing need to split the large generator retail companies into separate retail and generator companies and to reassess regulatory rules more generally interconnector congestion limits the potential for wind power to further reduce wholesale prices across the nem so the need for a high capacity transmission backbone in the nem is becoming clearer and will become pressing when australia moves beyond its current 2020 lret

variable renewable energy technologies in the turkish electricity market quantile regression analysis of the merit order effect abstract the share of variable renewable energy sources in power supply has increased significantly in many countries however this increase has also created problems in electricity markets while the average day ahead market price has declined in several markets the merit order effect the remuneration mechanisms in some countries have to be revised due to the surge in financial costs yet further research is needed to understand the implications of the merit order effect for remuneration mechanisms thoroughly accordingly this study aims to contribute to the literature through employing a quantile regression model to analyze the merit order effect and discuss its implications for the remuneration mechanism in turkish electricity market model results show significant negative merit order effect for both wind and run of river hydro technologies however this effect varies with respect to demand price level and technology moreover the contribution of these technologies to the total welfare in the turkish electricity market does not favor fixed price payments in conclusion it is recommended that the remuneration mechanism is revised to include the temporal value of variable renewable energy sources and electricity market design should reflect the locational value of variable renewable energy sources in turkey

an ex post analysis of the effect of renewables and cogeneration on spanish electricity prices abstract growing concerns about climate change and energy dependence are driving specific policies to support renewable or more efficient energy sources such as cogeneration in many regions particularly in the production of electricity these policies have a non negligible cost and therefore a careful assessment of their impacts seems necessary in particular one of the most debated impacts is their effect on electricity prices for which there have been some ex ante studies but few ex post studies this article presents a full ex post empirical analysis by looking at use of technologies and hourly electricity prices for 2005 2009 in spain to study the effects that the introduction of renewable electricity and cogeneration has had on wholesale electricity prices it is particularly interesting to perform this study in spain where an active system of public support to renewables and cogeneration has led to a considerable expansion of these energy sources and electricity pricing is at the center of intense debate the paper reports that a marginal increase of 1 gwh of electricity production using renewables and cogeneration is associated with a reduction of almost 2 per mwh in electricity prices around 4 of the average price for the analyzed period

regaining the edge for international business research the key to international business is that it approaches empirical phenomena at a variety of levels of analysis using a variety of theoretical frameworks the most important levels of analysis are the individual manager the firm the industry and the environment in each category there is vast heterogeneity figure 2 1 illustrates this interaction between issues and theories it has levels of analysis on the vertical axis and the basic social sciences on the horizontal axis as systems of thinking about the phenomena it would also be possible to replace fundamental disciplines by the primary management disciplines marketing finance strategy etc

location versus home country advantages in r d activities some further results on multinationals locational strategies abstract in this paper we study the question of the determinants of the foreign location of technological activities of multinational firms mnfs do they locate their knowledge activities as a consequence of their home country advantages or according to host country strengths we have defined four types of strategy learning according to revealed technological advantages our results based on the 345 mnfs with the greatest patenting activity in europe globally confirm the main findings of patel and vega research policy 28 2 3 1999 145 155 in a great majority of cases nearly 70 mnfs locate their activities abroad in technological areas or fields where they are strong at home strategies 2 and 3 moreover strategy 3 which corresponds with dynamic learning outclasses strategy 2 which corresponds with myopic learning and becomes increasingly important over time the strategy of japanese firms is very different from european and us mnfs in europe japanese firms seek out locations that have complementary strengths to their own strategy 2 in terms of policy implications it can be noted that the national system of innovation in particular the system of academic research should strengthen the technological advantages of local firms and enable them to successfully locate a part of their r d activities abroad

does renewable energy generation decrease the volatility of electricity prices an analysis of denmark and germany although variable renewable energy vre technologies with zero marginal costs decrease electricity prices the literature is inconclusive about how the resulting shift in the supply curves impacts price volatility because the flexibility to respond to high peak and low off peak prices is crucial for demand response applications and may compensate for the losses of conventional generators caused by lower average prices there is a need to understand how the penetration of vre affects volatility in this paper we build distributed lag models with danish and german data to estimate the impact of vre generation on electricity price volatility we find that in denmark wind power decreases the daily volatility of prices by flattening the hourly price profile but in germany it increases the volatility because it has a stronger impact on off peak prices our analysis suggests that access to flexible generation capacity and wind power generation patterns contribute to these differing impacts meanwhile solar power decreases price volatility in germany by contrast the weekly volatility of prices increases in both areas due to the intermittency of vre thus policy measures for facilitating the integration of vre should be tailored to such region specific patterns

the drivers of foreign direct investment into research and development an empirical investigation this paper examines the determinants of foreign direct investment fdi in research and development laboratories by 32 multinational enterprises in the pharmaceutical and electronics industries the paper applies a dichotomous set of motives for fdi results from an econometric analysis of 136 laboratory investments show that relative market size and relative strength of a country s science base determine whether fdi in research and development is carried out in order to exploit existing firm specific advantages or in order to build up new firm specific advantages this holds true in similar form for japanese european and u s firms and across the two industries

asset prices exchange rates and the current account this paper analyses the role of asset prices in comparison to other factors in particular exchange rates as a driver of the us trade balance it employs a bayesian structural var model that requires imposing only a minimum of economically meaningful sign restrictions we find that equity market shocks and housing price shocks have been major determinants of the us current account in the past accounting for up to 30 of the movements of the us trade balance at a horizon of 20 quarters by contrast shocks to the real exchange rate have been less relevant explaining about 9 and exerting a more temporary effect on the us trade balance our findings suggest that large exchange rate movements may not necessarily be the key element of an adjustment of today s large current account imbalances and that in particular relative global asset price changes could be a potent source of adjustment

large firms in the production of the world s technology an important case of non globalisation us patenting by 686 of the world s largest manufacturing firms shows that their share of the world s production of technology is less than their share of r d activities and varies greatly amongst sectors in most cases the technological activities of these large firms are concentrated in their home country the characteristics of which influence the volume and trends in their technological activities much more strongly then the international component of these activities at the same time these large firms are major elements in the volume and the pattern of sectoral specializations in their home countries technological activities

renewable energy regulation and structural breaks an empirical analysis of spanish electricity price volatility abstract international experience proves that electricity prices have undergone major changes in volatility since the entry of green technologies the intermittency of renewable sources is one of the reasons for these changes as it leads to higher volatility in periods of higher participation by renewables we argue that the development of the regulatory system promoting renewable electricity also plays a crucial role we raise a question that deserves attention could an incentive scheme induce higher share of renewables and lower volatility simultaneously in this paper we conduct an empirical analysis with spanish data we analyze possible ensuing structural changes in spanish electricity spot price volatility from january 2002 to december 2017 we identify two structural breaks linked to important measures related to renewable electricity i the abolishment of the feed in tariff scheme and ii the establishment of a more market oriented regulation based on investment and operating costs we conclude that stable regulatory policies reduce volatility even though the presence of renewable sources is greater furthermore market based policy measures achieve lower volatility encouraging good integration of intermittent renewable electricity

effects of renewables on the stylized facts of electricity prices abstract many countries around the world have increased their renewable installed capacity due to a greater awareness of climate concerns under this new framework with renewables being among the main generation sources the literature warns of a dramatic change in price behaviour some of the most commonly claimed effects of having a significant proportion of renewable generating sources in the total electricity production mix include i a systematic decrease in overall wholesale market prices ii a higher occurrence of price jumps and iii a significant increase in price volatility the goal of the present study is to test whether these changes in price behaviour have actually come about to do so we focus on the spanish day ahead electricity market as a paradigmatic example in line with the literature it is found a statistically negative relationship between the renewable generation share and the day ahead market marginal prices as well we have obtained statistical confirmation of the fact that renewables generation share volatility is transferred to price volatility though similarly to other generation technologies finally in contrast to the general belief that the introduction of renewable generation would give rise to extreme positive prices according to our results increases in renewables generation share reduce the probability of upward jumps in prices the results obtained are of interest for portfolio managers practitioners and regulators

dynamic analysis of the german day ahead electricity spot market abstract this paper analyzes the dynamic behavior of day ahead spot prices in the german electricity spot market due to positive structural shocks in wind and solar power it uses a dynamic structural vector autoregressive model to estimate the related structural impulse response functions the estimates suggest that wind power shocks have a more prolonged negative effect on spot prices than solar power shocks significant autocorrelations of wind power for larger lags indicate these results the total negative merit order effect of a solar power shock is larger when using a reasonable model specification one reason might be that solar power shocks coincide with demand peaks however results regarding the relation of the effects of wind and solar should be dealt with carefully because these results do not hold for all specifications past static estimates show differences in the total average negative merit order effects these estimates might be overstated if wind and solar power dynamics are transferred to the merit order effects

the merit order effect of wind and photovoltaic electricity generation in germany 2008 2016 estimation and distributional implications abstract generation from renewable energy sources in germany has experienced a considerable uptake in recent years mainly responsible for this development is the german renewable energy sources act erneuerbare energien gesetz eeg this paper considers redistributive implications of the eeg for different electricity consumers using time series regression analysis we show that electricity generation by wind and pv has reduced spot market prices considerably by 6 mwh in 2010 rising to 10 mwh in 2012 we use these results to build a near term forecasting tool for merit order effects projected to reach 14 16 mwh in 2016 on the other hand the costs of the eeg are passed forward to consumers in the form of a surcharge our findings highlight significant redistributive transfers under the current design of the eeg in particular some energy intensive industries are benefiting from lower wholesale electricity prices whilst being largely exempted from contributing to the costs of the scheme we also highlight implications of our results for other areas for reform of the eeg such as adequate remuneration mechanisms that ensure efficient operation and investment decisions are made under the scheme more generally these findings suggest that policy makers need to integrate distributional assessments into policy design and implementation