green accounting for an externality pollution at a mine this paper takes a value added approach to green accounting at an individual microeconomic unit a mine capacities forextraction and for abatement of pollution are chosen subject to anenvironmental regulation the implications for accounting for resource andenvironmental degradation are discussed depreciation is not quantitativelyunique but can be compared qualitatively with a condition involving shadowprices the costs of defensive expenditures contribute to increasing greennnp but depreciation of the resource is a charge against gnp in computinggreen nnp income from capital is the return on the undepreciated values ofextractive capacity abatement capacity and the resource and is a part ofnet domestic income

irreversible investment with regime shifts under the real options approach to investment under uncertainty agents formulate optimal policies under the assumption that firms growth prospects do not vary over time this paper proposes and solves a model of investment decisions in which the growth rate and volatility of the decision variable shift between different states at random times a value maximizing investment policy is derived such that in each regime the firm s investment policy is optimal and recognizes the possibility of a regime shift under this policy investment is intermittent and increases with marginal q moreover investment typically is very small but in some states the capital stock jumps implications for marginal q and the user cost of capital are also examined

a bibliometric analysis of research on carbon tax from 1989 to 2014 abstract as one of the most cost effective means of emission reduction carbon tax has attracted considerable attention from economists and international organizations and has led to a large number of related research using the bibliometric method this paper characterizes the carbon tax literature from 1989 to 2014 based on the network database platform of web of science the results indicate that the usa occupies a leading position in the carbon tax field the vrije university amsterdam massachusetts institute of technology and stanford university were the most productive research institutes energy policy 143 has been the most productive journal followed by energy economics 44 and energy 38 in general the cooperation of authors institutes and nations are continuing to strengthen however the growth rate at the author level was significantly higher than the others in addition the current key research areas in the carbon tax field based on co keyword analysis are as follows climate change and relevant policy carbon emissions trading socio economic effects of carbon tax renewable energy endogenous technological change and carbon capture and storage the results of this paper will help researchers grasp the current research in the carbon tax field but also provide a supporting role for future work

testing the option value theory of irreversible investment this article statistically tests the option theory of irreversible investment using contingent claims valuation we derive the value of options to invest in capacity where the projects are endogenous to the economic circumstances prevailing at the investment date we then test whether decisions made by canadian copper mines are compatible with the trigger price implied by the theory our model explains investment size and timing satisfactorily from a statistical and an economic point of view simulations with a mean reverting process suggest that the results do not depend crucially on the assumption that price follows a geometric brownian motion

capacity choice and the theory of the mine when extraction from mineral deposits is constrained byfixed capacity an r per cent rule holds this deposit specific rule however is more partial than hotelling s rule in that it is followed byprice takers and does not require price to adjust to produce equilibrium toobtain the resource rent to which the rule applies the shadow value ofcapacity must be subtracted from the usual net price i e price lessshort run marginal cost but the shadow value of capacity cannot becalculated from common depreciation formulas an alternative method ofcalculating the shadow values is derived the shadow value of reserves maybe increasing in the level of initial reserves if there are increasingreturns to installing capacity the value of the resource is not equal tothe discounted resource rent

opec market failure or power failure abstract the actions of opec and saudi arabia are discussed in terms of their objectives and their technical and social constraints it is concluded 1 that opec does not act as a cartel and 2 that hotelling s rule is not an important feature of pricing or production opec s more specifically saudi arabia s ideal policy is to keep price moderate to try to assure a market for their high reserves over the long run such an action would require heavy investments in capacity including in excess capacity for times of interruption of supply from other countries as in the 1990s and for times of high demand as in the 2000s the action may be inconsistent with other objectives and in any case may be too difficult to achieve

intelligent agents for negotiations in market games 2 application for part i see ibid vol 13 no 5 p 1103 8 1998 in competitive markets human decision makers need assistance to determine potential coalitions that they can be part of note that such coalitions are legal provided market power is not monopolized we present an approach for designing specialized intelligent software agents that perform negotiations on behalf of their human counterparts and then suggest market strategies that the human can adopt our negotiation protocol is derived from cooperative game theory however it differs from the game theory literature in requiring virtually no trustworthy information exchange between the potential coalition partners in the part i we presented the negotiation model in this paper we apply it to power markets

unilateral climate policy and the green paradox extraction costs matter i analyze the effect of unilateral climate policies in a two country model where fossil fuel extraction costs depend on both current extraction and remaining stock and where a constant marginal cost clean substitute is available an intensification of climate policy in the country with an initially stricter policy does not increase early fossil fuel extraction i e there is no weak green paradox or the present value of pollution costs i e there is no strong green paradox if energy demand in that country is initially met with a mix of fossil fuel and a substitute whether a stricter climate policy in the country with an initially laxer policy causes a weak green paradox depends on the price elasticity of energy demand and the strength of the flow and stock dependence of extraction costs if the reduction of total extraction is sufficiently strong it overcompensates for a weak green paradox with respect to pollution costs thus a weak green paradox does not necessarily imply a strong green paradox due to stock dependence politique climatique unilaterale et paradoxe vert l incidence des couts d extraction l article analyse l effet des politiques climatiques unilaterales dans un modele a deux pays ou les couts d extraction de combustibles fossiles dependent a la fois de l extraction actuelle et du stock residuel et ou la disponibilite d un substitut energetique propre et constant a cout marginal demeure une intensification des politiques climatiques dans le pays de pair avec une politique initialement plus stricte n augmente ni l extraction precoce des combustibles fossiles c est a dire qu il n y a pas de paradoxe vert faible ni la valeur actuelles des couts de pollution c est a dire qu il n y a pas de paradoxe vert accru x00ab pour autant que la demande en energie dans ce pays est initialement satisfaite par une combinaison d un combustible fossile et d un substitut qu une politique climatique plus stricte dans ce pays dote d une politique initialement plus laxiste entrane un paradoxe vert moins prononce depend de l elasticite par rapport au prix de la demande d energie de l importance du flux et de la dependance en matiere de stock relativement aux couts d extraction si une reduction de l extraction totale est suffisamment forte elle surcompensera un paradoxe vert limite relativement aux couts de pollution ainsi un faible paradoxe vert n engendre pas necessairement un fort paradoxe vert en raison de la dependance au stock

game theoretical multi agent modelling of coalition formation for multilateral trades in recent years electric utility industries worldwide have been undergoing deregulation to introduce competitiveness in the generation transmission and distribution of electric power the once centralised system planning and operation management must be remodelled to adapt to the new market structure in particular the trading mechanism needs to be totally revised as any party may now get involved in this free market subject to the unavoidable constraints such as generation volumes physical transmission means and days ahead scheduling this paper presents a multi agent model in conjunction with game theory to resolve the coalition formation for multilateral trades the authors have implemented the model using the java language and the jatlite jat0 3 agent development tools developed by stanford university

valuing mineral reserves when capacity constrains production abstract we add a capacity constraint and heterogeneous reserves to the hotelling valuation principle this produces a more general version of the principle that is more consistent with empirical valuations while retaining the underlying relationship between net price and reserve value

a note on mining with investment in capital one of the principal predictions of the theory of the extractive firm is that its rate of output will decline steadily throughout time recently in this journal campbell 1980 presented an interesting analysis suggesting that this behaviour may be altered if one accounts for the fact that firms must invest in some level of fixed capital which is needed in combination with variable inputs to extract the resource in the campbell analysis the fixed capital places a constraint on the maximum rate of extraction it is shown that this constraint is binding and that extraction is therefore constant over some initial period of the mine when the firm behaves optimally this note demonstrates that the campbell result is due to a fixed proportions technology assumption in particular when a neoclassical technology is assumed one finds that the constraint imposed by the level of fixed capital is never binding and that the optimal extraction rate is strictly monotonically declining as a function of time i to demonstrate this an informal argument will suffice let k be the level of fixed capital chosen by the firm let lt be the amount of the variable factor employed in period t assume that the rate of extraction et is given by the production function2

market equilibrium under incomplete and imperfect information in bilateral electricity markets in contrast to the centralized pool model bilateral markets present a decision making situation in which information plays a major role along with the physical and operative constraints of the network we propose a model that includes network constraints for competitive bilateral electricity markets based on an evolutionary bipartite complex network in which the nodes and weighted links represent the players and transactions respectively the strong stable equilibrium of the network is applied to detect possible market equilibria obtained through a dynamic game with incomplete and imperfect information in which the players form an evolutionary network while trying to maximize their own utilities the model is conceptually illustrated with a four bus test system and then applied to the ieee30 test system to analyze the impact of the transmission network and information on the equilibria and market performance

revenue adequate bidding strategies in competitive electricity markets energy trading in a competitive electricity market can be modeled as a two level optimization at the top level a centralized economic dispatch ced uses a priority list method to solve the fundamental problem of reliable market clearing with price discovery the lower level consists of a set of decentralized bidding db subproblems the db model uses a self unit scheduling simulator based on parametric dynamic programming to produce hourly bid curves for the central dispatch coordinator unit operating constraints and costs such as the unit minimum up and minimum down times ramp rates and the unit start up no load and sunk capital costs are internalized in the bid curves through the simulator a special algorithm is presented to solve the revenue adequacy problem for marginal units both ced and db models are based on the revenue maximization in contrast with the cost minimization criteria used in the conventional unit commitment uc the proposed method has been tested in a study case and some interesting results have been demonstrated

seeing the trees as a forest what counts in green accounting applying green accounting to value the commercial contribution and depletion of a forest is only a short run variation of the traditional approach to net national product nnp and arguably provides less information green adjustments can make a vital difference however by introducing nonmarketed values since optimal nnp is the linearized hamiltonian values are taken at the margin and exclude consumers surpluses unlike in cost benefit analysis green nnp may also require imputation of unmarketed exports and imports 2001 elsevier science b v all rights reserved

impacts of network constraints on electricity market equilibrium nash equilibrium is usually used as the solution of generator s strategic bidding in electricity markets the available literature has shown by simulation that multiple market equilibria or no pure equilibrium may be induced after the inclusion of network constraints transmission constraints this paper presents a systematical analysis for the impacts of network constraints on the market equilibrium in oligopolistic electricity markets in our modeling the independent system operator iso dispatches generation and determines nodal prices via solving an optimal power flow opf and the individual generator optimizes its submitted supply function with nash supply function equilibrium sfe strategy after taking into account iso s decision making process on dispatched generations and nodal prices the conditions for the existence of equilibrium are given and it is shown that there may be multiple equilibria or no pure nash equilibrium the equilibrium if it exists will be at a point where generators pay no congestion charge

the supply of non renewable resources there exists no formal treatment of non renewable resource nrr supply systematically deriving quantity as function of price we establish instantaneous restricted fixed reserves and unrestricted nrr supply functions the supply of a nrr at any date and location not only depends on the local contemporary price of the resource but also on prices at all other dates and locations besides the usual law of supply which characterizes the own price effect cross price effects have their own law they can be decomposed into a substitution effect and a stock compensation effect we show that the substitution effect always dominates a price increase at some point in space and time causes nrr supply to decrease at all other points this new but orthodox supply setting extends to nrrs the partial equilibrium analysis of demand and supply policies thereby it provides a generalization of many results about policy induced changes on nrr markets the properties of restricted and unrestricted supply functions are characterized for hotelling homogeneous as well as ricardian non homogeneous reserves for a single deposit as well as for several deposits that endogenously come into production or cease to be active

addressing the competitiveness effects of taxing carbon in china domestic tax cuts versus border tax adjustments abstract this study focuses on the international competitiveness effects of levying a carbon tax in china based on a computable general equilibrium model this study analysed the impacts of a carbon tax on different sectors from the aspect of changes in market shares of domestic producers in the domestic markets and changes in exports the effects of different measures including domestic tax cuts and border tax adjustments in alleviating the unfavourable competitiveness impacts were also analysed and compared as were the impacts of different tax schemes on the macro economy sectoral profits and carbon emissions the results show that without any complementary measures a carbon tax would negatively shock the domestic market shares and exports of almost all tradable sectors and the profits of almost all sectors as for cushioning the unfavourable effects the domestic tax cuts are able to ease the negative impacts on the domestic market shares and exports of almost all tradable sectors moreover the unfavourable impacts of domestic tax cuts on both the macro economy and the sectoral profits are obviously smaller than those of the other schemes regardless of the use of the same tax rate or emission reduction amount among the border tax adjustment measures the best performance in general corresponds to the measure purely implementing adjustments on exports

the political drivers of renewable energies policies this paper empirically analyzes how political factors affect the deployment of renewable energy re sources and compares their explanatory power to that of other economic energy and environmental drivers that have received greater attention in the literature so far the sample encompasses the eu countries bound to attain the target of 20 share of gross final energy consumption by 2020 the panel data analysis shows that lobbying by the manufacturing industry negatively affects re deployment whereas standard measures of government quality show a positive effect furthermore left wing parties promote the deployment of re more than right wing parties

an equilibrium model of investment under uncertainty this paper analyzes the optimal investment decisions of heterogeneous rms in a competitive uncertain environment we characterize rms optimal investment strategy explicitly and derive a closed form solution for rm value we show that in the strategic equilibrium real option premia are signi cant as a result rms delay investment choosing optimally not to undertake some positive npv projects the model predicts that rm returns vary over the business cycle with returns negatively skewed during expansions but positively skewed in recessions

comprehensive bidding strategies with genetic programming finite state automata this research is an extension of the authors previous work in double auctions aimed at developing bidding strategies for electric utilities which trade electricity competitively the improvements detailed in this paper come from using data structures which combine genetic programming and finite state automata termed gp automata the strategies developed by the method described here are adaptive reacting to inputs whereas the previously developed strategies were only suitable in the particular scenario for which they had been designed the strategies encoded in the gp automata are tested in an auction simulator the simulator pits them against other distribution companies distcos and generation companies gencos buying and selling power via double auctions implemented in regional commodity exchanges the gp automata are evolved with a genetic algorithm so that they possess certain characteristics in addition to designing successful bidding strategies whose usage would result in higher profits the resulting strategies can also be designed to imitate certain types of trading behaviors the resulting strategies can be implemented directly in online trading or can be used as realistic competitors in an off line trading simulator

the green paradox of the economics of exhaustible resources abstract the green paradox states that an increasing tax on emissions of carbon dioxide consonant with the expected increase in their marginal damages may induce oil producers to shift their production toward the present and thereby to exacerbate the problem of climatic change the model is based on hotelling models of resource use that do not take the natural and technical features of oil production into account natural features include the decline of production through time according to a decline curve technical features include the requirement to sink investment in productive capacity a model of a profit maximizing firm indicates that if these features are taken into account the prediction of the green paradox is unlikely

option premiums in mineral asset pricing are they important mineral assets consistently trade at market values greater than their discounted cash flow dcf values one explanation is that dcf analysis does not and cannot incorporate the asset value generated by asset management under uncertainty this paper surveys the attempts to empirically quantify the option premium associated with optimal mineral asset management the option premium appears to explain at most half of the observed gap between dcf value and market value and adds at most 3 percent to a mineral asset s gross worth asset management option premiums therefore have only a second order impact on mineral asset pricing

environmental and resource economics a canadian retrospective the paper reviews research contributions to environmental and resource economics by scholars in canada we focus mainly on work from the past 25 years but also highlight earlier pathbreaking work we begin by looking at broad trends in research both internationally and within canada we then review canadian contributions to various topics in the field canadians have played a leading role in the development of the field especially in resource economics international environmental economics and the valuation of environmental amenities

reconciling the green accounts in an optimally managed economy green nationalexpenditure is equal to the linearization of the hamiltonian from theproblem of maximizing discounted social utility herein we utilize theadjoint conditions to add to the basis for viewing green nnp as an index ofsocial utility under ideal conditions and to show the equality of netnational income and expenditure the results apply even when returns toscale are increasing or decreasing unpriced net environmental benefitsshould be incorporated into comprehensive nnp in much the same way as thedisutility of labor otherwise current practices of the national accountscan be defended including the treatment of capital gains

a dynamic model of cleanup estimating sunk costs in oil and gas production the environmental remediation required to permanently decommission most industrial projects is an expensive irreversible investment real options literature shows that temporary closure has value under uncertainty however even if there is no intention to restart operations there is an incentive to label a closure as temporary to avoid having to remediate ongoing or future environmental externalities i estimate a dynamic discrete choice model of closure under price and quantity uncertainty to evaluate the likelihood of reactivation the model reveals that the option to temporarily close is being widely used to avoid environmental remediation of oil and gas wells in canada

optimal electricity supply bidding by markov decision process the bidding decision making problem is studied from a supplier s viewpoint in a spot market environment the decision making problem is formulated as a markov decision process a discrete stochastic optimization method all other suppliers are modeled by their bidding parameters with corresponding probabilities a systematic method is developed to calculate transition probabilities and rewards a simplified market clearing system is also included in the implementation a risk neutral decision maker is assumed the optimal strategy is calculated to maximize the expected reward over a planning horizon simulation cases are used to illustrate the proposed method

how to make a carbon tax reform progressive the role of subsistence consumption this letter analyzes the distributional effects of a carbon tax reform when households must consume carbon intensive goods above a subsistence level the reform is progressive if revenues are recycled as uniform lump sum transfers in other cases it is regressive

competitive bidding as a control problem the dynamics and mechanisms of bidding by electricity generators to supply electricity to a national grid are investigated a mathematical model for the bidding process is developed and the generators are assumed to act rationally according to the maximize expected utility principle the model and system objectives are interpreted as a classical control problem and results simulated and analytical are presented the results show that by introducing multiple bidding rounds convergence to a pareto optimum is possible if a proportional integral control policy is introduced

simulated exchange values and ecosystem accounting theory and application to free access recreation abstract this paper discusses the simulated exchange value method a practical method to estimate values for goods and services currently outside of the market in a manner consistent with the market based figures considered in national accounts the method proposes to simulate in a partial equilibrium context the price that would occur if a good or service outside of the market such as free access recreation in forests were internalized the method takes into account the demand estimated using non market valuation techniques the supply and the market structure the discussion covers the case of a linear demand and the case in which the demand is estimated using discrete choice methods this paper applies the method to free access recreation in the forests of andalusia in the south of spain and compares the results to those obtained using hicksian variations

factors influencing co2 emissions in china s power industry co integration analysis more than 40 of china s total co2 emissions originate from the power industry the realization of energy saving and emission reduction within china s power industry is therefore crucial in order to achieve co2 emissions reduction in this country this paper applies the autoregressive distributed lag ardl co integration model to study the major factors which have influenced co2 emissions within china s power industry from 1980 to 2010 results have shown that co2 emissions from china s power industry have been increasing rapidly from 1980 to 2010 the average annual growth rate was 8 5 and the average growth rate since 2002 has amounted to 10 5 secondly the equipment utilization hour as an indicator of the power demand has the greatest influence on co2 emissions within china s power industry in addition the impact of the industrial added value of the power sector on co2 emissions is also positive from a short term perspective thirdly the granger causality results imply that one of the important motivators behind china s technological progress within the power industry originates from the pressures created by a desire for co2 emissions reduction finally this paper provides policy recommendations for energy saving and emission reduction for china s power industry

testing the efficiency of extraction from a stock resource the theoretical conditions for efficient extraction from a known stock resource by a competitive mining firm are reviewed these conditions are tested using proprietary data from a mining firm output price data and coefficient estimates from a translog cost system are used to compute the in situ value of the resource and the stock effect changes in the in situ value over time are then statistically compared with the expected price path the results reject the hypothesis that the data are consistent with the theoretical model and the maintained hypotheses variations of the basic model that incorporate a time varying discount rate an alternative expected price series and a constraint on the rate of output are also tested and rejected 46 references 10 tables

integration or segmentation of the canadian stock market evidence based on the apt the domestic and international arbitrage pricing theories are modified to encom pass the hypotheses that the canadian and global north american equity markets are com pletely or partly integrated segmented the exchange rate determination literature is used to identify potentially priced binational factors and the sensitivities and factor prices are es timated using non linear sur the two equity markets are only partly integrated segmented canadian stock returns are influenced by the pure domestic components of the term structure and lagged industrial production and by the pure international components of the differential

sufficient conditions for a class of investment problems abstract sufficient conditions are obtained for a generalization of the control problem of bolza hestenes in which various functions may not be concave in the control parameter s it is applicable to problems of investment in fixed capacity where there are economies of scale

cost and co2 reductions of solar photovoltaic power generation in china perspectives for 2020 abstract to improve the understanding of the cost and benefit of photovoltaic pv power generation in china we analyze the per kwh cost fossil energy replacement and level of co2 mitigation as well as the cost per unit of reduced co2 of pv power generation in 2020 at the province level three potential pv systems are examined large scale pv lspv building integrated pv bipv and distributed pv systems used in remote rural areas which have very low capacities the results show that in 2020 pv power generation could save 17 4 mtce fossil energy and 46 5 tg co2 compared with 600 mwe coal fired supercritical units also in 2020 the costs of solar electricity could be reduced by approximately 60 as compared to 2010 but would still be 11 74 higher than the current grid prices the pv electricity costs vary significantly among provinces in the economically developed eastern provinces the pv electricity mainly bipv is 0 67 0 86 rmb kwh this rate is close to grid parity owing to high grid prices but the co2 mitigation cost is high 456 693 rmb mg co2 the pv electricity mainly lspv in solar resource rich western provinces has lower cost 0 45 0 75 rmb kwh and lower co2 mitigation cost 172 419 rmb mg co2 but is farther from grid parity due to the low local grid price from a cost effective perspective lspv in the west provinces should be the first priority in pv deployment strategies and should receive strong financial support from the government this study provides a quantitative province specific analysis of pv power generation which can be used to support various pv subsidy policies

cost specification and firm behaviour in a hotelling model of resource extraction in applied resource economics much attention has been focused on the ability of the hotelling model to explain observed firm behavior in this paper a preliminary specification search is performed to determine the appropriate cost function parameterization for the firms in the sample before proceeding to the estimation of the euler equation once a cost function specification is chosen the corresponding euler equation is estimated via the generalization method of moments gmm which allows for better estimates of the euler equations than in previous studies even with the preliminary specification search and the use of gmm estimation the behavior of the panel of fourteen canadian copper mining firms in the data set examined does not seem to be consistent with the basic hotelling model used

transaction analysis in deregulated power systems using game theory the electric power industry is in transition to a deregulated marketplace for power transactions in this environment all power transactions are made based on price rather than cost a regional power pool is noted as the most straightforward path to a deregulated electricity marketplace however many questions remain unanswered regarding the economics of power pool participation in a deregulated energy marketplace participants are interested in maximizing their own profits regardless of the system wide profits it is perceived that competition will reduce the price of electricity for retail customers however the key issue for participants is related with the price definition to remain competitive in this paper the authors use game theory to simulate the decision making process for defining offered prices in a deregulated environment the outcome of this study may be used by power pool coordinators to discourage unfair coalitions a modified ieee 30 bus power system is used as a deregulated power pool to illustrate the main features of the proposed method

on using current information to value hard rock mineral properties we reformulate the hotelling valuation principle to take into account the special production characteristics of hard rock minerals the data requirements of the revised model are still parsimonious but the resultant valuations are some 40 below those produced by the hotelling valuation principle our valuation equations are also user friendly allowing the valuer to specify price and cost expectations that need not comply with the hotelling rule empirically our model provides estimates of market value for producing mineral properties that are more accurate than those produced by the hotelling valuation principle

the conservationist s dilemma it is typically thought that conservation of natural resources is encouraged by low interest rates however when capital goods are used to extract the resource low interest rates may discourage rather than encourage conservation using a model of a capacity constrained extractive industry in competitive equilibrium i find the relationship between the initial rate of exploitation and the interest rate if capital is so important that for sufficiently high interest rates the industry is nonviable the graph of initial quantity versus the interest rate is u shaped the traditional result holds at small interest rates but not at large ones copyright 1993 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

strike when the force is with you optimal stopping with application to resource equilibria optimal investment in a nonrenewable resource project occurs when the rate of increase of the project s forward value falls to the force of interest this stopping rule yields a financial interpretation of resource quality as being a property of the project rather than of individual units of reserves it also leads to re interpretations of a rent as the present value of the project rather than of units of reserves and b hotelling s insight as not a rule for the path of rents but an equilibrium algorithm for price the analysis is extended to sequential development of pesticides antibiotics and forests

comprehensive effectiveness assessment of renewable energy generation policy a partial equilibrium analysis in china abstract in order to stimulate renewable energy and control carbon dioxide emissions the chinese government has already introduced lots of renewable energy generation policies under this background it is of great significant to figure out the economic environmental and social effectiveness of these polices firstly this paper systematically studied the framework and content of renewable energy generation policies secondly this paper built a basic partial equilibrium model to calculate the equilibrium state of electricity market and carbon emissions on this base the effectiveness of seven renewable energy generation policies was analyzed by introducing policies into the basic model and comparing relevant indicators in different policy scenarios with that in basic scenario further an empirical analysis was made to estimate the actual benefits of these policies in china this paper proposed an analysis method for evaluating the mechanism effectiveness and efficiency of renewable energy generation policies all the results and discussions in this paper can provide specific suggestions for chinese government to shape a blueprint for implementing different kinds of policies

the impact of r d on innovation for wind energy in denmark germany and the united kingdom this paper examines the impact of public research and development r d support on cost reducing innovation for wind turbine farms in denmark germany and the united kingdom uk first we survey the literature in this field the literature indicates that in denmark r d policy has been more successful than in germany or the uk in promoting innovation of wind turbines furthermore such studies point out that subsidy induced capacity expansions were more effective in the uk and denmark in promoting cost reducing innovation than in germany the second part of the paper describes the quantitative analysis of the impact of r d and capacity expansion on innovation this is calculated using the two factor learning curve 2flc model in which investment cost reductions are explained by cumulative capacity and the r d based knowledge stock time series data were collected for the three countries and organized as a panel data set the parameters of the 2flc model were estimated focusing on the homogeneity and heterogeneity of the parameters across countries we arrived at robust estimations of a learning by doing rate of 5 4 and a learning by searching rate of 12 6 the analysis underlines the homogeneity of the learning parameters enhancing the validity of the 2flc formulation

sectoral supply of minerals of varying quality in this sectoral model of mineral production investment in capacity and variation in orebody grade and volume help explain some stylized facts more than one grade of ore may be exploited simultaneously mine exhaustion but not necessarily entry occurs in declining order of grade the price may rise or fall but is likely to fall initially young industry and must eventually rise at less than the interest rate unless demand expands rapidly these trends exhibit fluctuations due to entry and exhaustion of deposits resource price cyclicality is reinforced because mines keep producing at capacity when the price is falling

endogenous growth with a limited fossil fuel extraction capacity campbell 1980 and following authors have discussed a limited resource extraction capacity as an augmentation of the well known hotelling model we integrate a limited extraction capacity and related investments in the endogenous growth model of tsur and zemel 2005 to study its effect on economic development the capacity constraint gives rise to three effects on the one hand higher energy costs and the reallocation of production towards capacity investments decrease production available for consumption research and or capital investments energy costs and reallocation effect on the other hand research investments may increase which boosts available production research effect depending on the capital endowment and the strength of the effects long run consumption may be boosted or depressed in particular the capacity constraint may render everlasting consumption growth non optimal in a resource rich economy furthermore we find that capacity investments may be postponed to later points in time if the capital endowment is high

optimization based bidding strategies in the deregulated market with the deregulation of electric power systems market participants are facing an important task of bidding energy to an independent system operator iso this paper presents a model and a method for optimization based bidding and self scheduling where a utility bids part of its energy and self schedules the rest as in new england the model considers iso bid selections and uncertain bidding information of other market participants with appropriately simplified bidding and iso models closed form iso solutions are first obtained these solutions are then plugged into the utility s bidding and self scheduling model which is solved by using lagrangian relaxation testing results show that the method effectively solves the problem with reasonable amount of cpu time

decomposition model and interior point methods for optimal spot pricing of electricity in deregulation environments in this paper an integrated optimal spot pricing model is presented first the proposed model includes the detailed derivation of optimal nodal specific real time prices for active and reactive powers and the method to decompose them into different components corresponding to generation loss and many selected ancillary services such as spinning reserve voltage control and security control the features of the proposed model are discussed in relationship to existing pricing models and classical economic dispatch the model is then implemented by modifying existing newton opf methods through interior point algorithms which can effectively avoid go no go gauge i e highly volatile in the calculation of spot prices case studies on 5 bus and ieee 30 bus systems are reported to illustrate the proposed method

the study of the impacts of potential coalitions on bidding strategies of gencos the paper studies the impacts of potential coalitions on bidding strategies of gencos in a pool based power market the generator under consideration can form any potential coalition with other generators subgroups are then formed and each of these subgroups consists of some members which coordinate their bidding strategies to achieve a common goal noncooperative gaming applies among all the subgroups while cooperative gaming applies among the members in each subgroup by implementation of bids sensitivities the paper presents an algorithm for the members in each coalition subgroup to obtain optimal bids which essentially is based on interior point optimal power flow ipopf model a priority list produced after optimal bids are found for all the potential combinations of coalition is used by the generator under consideration to bargain with members on the list the algorithm and model are tested by the ieee 30 bus system and numerical results are presented

when renewable portfolio standards meet cap and trade regulations in the electricity sector market interactions profits implications and policy redundancy emission trading programs c t and renewable portfolio standards rps are two common tools used by policymakers to control ghg emissions in the energy and other energy intensive sectors little is known however as to the policy implications resulting from these concurrent regulations especially given that their underlying policy goals and regulatory schemes are distinct this paper applies both an analytical model and a computational model to examine the short run implications of market interactions and policy redundancy the analytical model is used to generate contestable hypotheses while the numerical model is applied to consider more realistic market conditions we have two central findings first lowering the co2 c t cap might penalize renewable units and increasing the rps level could sometimes benefit coal and oil and make natural gas units worse off second making one policy more stringent would weaken the market incentive which the other policy relies upon to attain its intended policy target

using the binomial model for the valuation of real options in computing optimal subsidies for chinese renewable energy investments abstract for the valuation and implementation of renewable energy investments the issue of providing private investors with a financial incentive to accelerate their investment is frequently a critical component we apply this principle to the chinese context this paper focuses on using the binomial model to compute the required subsidy that would incentivize investors to optimal immediate exercise of the american style option embedded at the launching phase of the projects for chinese renewable energy investments in addition this paper also aims at contrasting the binomial model with the more laborious monte carlo simulation previously used to evaluate the proper subsidy by using the same data but a different method and reducing the number of uncertain factors to one it is suggested these two methods have similar outcomes but the binomial method requires substantially less computation and is more self explanatory this paper thus provides government with an easy to implement alternative way to compute the required subsidy

optimal exploration for and exploitation of heterogeneous mineral deposits abstract we model exploration for and production from a multiple deposit nonrenewable resource exploration is viewed as a bayesian process involving learning about undiscovered reserves and is undertaken both to improve the quality of and to replenish known reserves known reserves are not physically defined but depend on the realizations of discrete episodes of exploration elsewhere and on decisions at each instant about the margin between ore to be mined and low grade material to be rejected the appropriate measure of resource scarcity the sustainable level of the contribution of the resource and the treatment of depletion in the national accounts are considered

a test of the hotelling valuation principle time series tests of the hotelling r percent rule for natural resource prices have not been strongly supportive but the tests and the data are subject to serious difficulties we propose here an alternative testing strategy based on another but less widely known implication of the hotelling model we test this implication which we call the hotelling valuation principle by regressing the market values of the reserves of a sample of u s domestic oiland gas producing companies on their estimated hotelling values we find that the estimated hotelling values account for a significant portion of the observed variations in market values and that the hotelling measures are better indicators of the market values of petroleum properties than two widely cited publicly available alternative appraisals

costs and benefits of renewables portfolio standards in the united states lbnl xxxx costs and benefits of renewables portfolio standards in the united states by galen barbose 1 jenny heeter 2 lori bird 2 samantha weaver 1 francisco flores espino 2 and ryan wiser 1 lawrence berkeley national laboratory national renewable energy laboratory corresponding author galen barbose research scientist electricity markets and policy group environmental energy technologies division lawrence berkeley national laboratory 1 cyclotron road ms 90r4000 berkeley ca 94720 phone 510 984 3453 email glbarbose lbl gov abstract as state level renewable portfolio standards rps have driven large increases in u s renewable generation capacity states have sought to quantify the costs and benefits of these policies this paper examines recent costs and benefits of rps implementation focusing on the net or incremental cost to utilities of renewables used for compliance with rps targets during the years 2010 2012 incremental rps cost estimates are developed using a wide variety of methods and assumptions which makes comparisons among states imperfect for states with restructured electricity markets we use a standardized method to calculate incremental costs based on renewable energy certificate prices alternative compliance payment levels and compliance obligations for states with traditionally regulated electricity markets we rely on estimates produced by utilities and regulators whose methods and underlying assumptions vary widely we find that recent estimated incremental rps costs were equivalent to less than 2 of retail rates in 17 states and about 2 4 in eight states or 4 mwh to 48 mwh of renewable energy required across all states for the most recent year available in each state estimated rps costs in most states were well below the respective cost caps although a few states are currently operating at or near their cap 1 introduction twenty nine states washington dc and puerto rico have adopted renewables portfolio standards rps helping drive a roughly eight fold increase in u s renewable generation capacity over the past decade concern over the impact of these policies on electricity prices and economic growth however has spurred recent legislation in at least a dozen states to repeal reduce or freeze existing rps requirements at the same time other recent legislative proposals have sought to expand state rps policies understanding the actual historical costs and benefits of rps policies is critical to informing these legislative debates but the subject is inadequately understood this paper examines historical costs of rps implementation drawing on a recent joint report by lawrence berkeley national laboratory and the national renewable energy laboratory estimating the costs and benefits of complying with renewable portfolio standards reviewing experience to date heeter et al 2014 1 we summarize the methods state agencies and utilities have used to assess rps costs compare incremental rps compliance costs to date and evaluate the potential for increases in rps compliance costs as legislative targets rise and cost caps in some states potentially become binding the aforementioned report also synthesizes recent estimates of broader societal benefits from formal state agency evaluations including estimates of health and emission reduction benefits economic development benefits and wholesale electricity market price reductions though those findings are not included in the present paper compared to the summary of estimated rps costs the summary of rps benefits is more limited as relatively few states have undertaken detailed benefits estimates and then only for a few types of potential policy impacts in some cases the same impacts may be captured in the assessment of costs for these reasons and because methodologies and level of rigor vary widely direct comparisons between the estimates of benefits and costs are challenging 2 methods and data sources for estimating incremental rps compliance costs rps compliance costs may be defined as either gross costs or incremental costs gross costs consist of the total cost of procuring renewables to meet the rps while incremental costs also referred to as net or above market costs represent this report is publically available at http emp lbl gov publications participation by lawrence berkeley national laboratory was supported by the office of energy efficiency and renewable energy solar technologies office of the u s department of energy under lawrence berkeley national laboratory contract no de ac02 05ch1131

the fundamental problem of accounting the fundamental problem of economic accounting is to determine a forward looking schedule of rentals user costs or quasi rents to provide for the recovery of irreversible investments the method derived herein relaxes some restrictive assumptions that are common in capital theory there can be multiple forms of comprehensive capital accounting for all forms of capital including tangible and intangible capital is symmetrical the analytical focus becomes one of fixities and frictions and not optimality rentals obey inequalities as opposed to marginal conditions if discounted profit is positive rentals depreciation and capital value are not unique le probleme fondamental de la comptabilite le probleme fondamental de la comptabilite economique est de determiner une cedule des loyers couts d utilisation ou quasi rentes anticipes permettant de recuperer la mise de fonds dans des investissements irreversibles la methode proposee ici relaxe certains postulats restrictifs conventionnels en theorie du capital la comptabilite de toutes les formes de capital y compris le capital tangible et intangible est symetrique la focalisation analytique devient centree sur les fixites et les frictions et non l optimalite si le profit escompte est positif loyers depreciation et valeur du capital ne sont pas uniques

state renewable energy electricity policies an empirical evaluation of effectiveness over the past decade state governments have emerged as us energy policy leaders across the country states are adopting policy instruments aimed at carbon mitigation and renewable energy deployment one of the most prevalent and innovative policy instruments is a renewable portfolio standard rps which seeks to increase the share of renewable energy electrification in the electricity market this analysis evaluates the effectiveness of state energy programs with an empirical investigation of the linkage between state rps policy implementation and the percentage of renewable energy electricity generation across states we use a variant of a standard fixed effects model referred to as a fixed effects vector decomposition with state level data from 1998 to 2006 results indicate that rps implementation is not a significant predictor of the percentage of renewable energy generation out of the total generation mix yet for each additional year that a state has an rps policy they are found to increase the total amount of renewable energy generation these findings reveal a potentially significant shortcoming of rps policies political institutions natural resource endowments deregulation gross state product per capita electricity use per person electricity price and the presence of regional rps policies are also found to be significantly related to renewable energy deployment

inventor networks in renewable energies the influence of the policy mix in germany technological change and gains in efficiency of renewable power generation technologies are to a large extent driven by governmental support various policy instruments that can broadly be categorized as technology push demand pull or systemic constitute part of the policy mix for renewable energies our goal is to gain insights into the influence of this policy mix on the intensity and organization of inventive activities for wind power and photovoltaics in germany since the 1980s we examine the effect of different instruments on the size and structure of co inventor networks based on patent data our results indicate notable differences between the technologies the network size for wind power is driven by technology push and systemic instruments while in photovoltaics demand pull is decisive for network growth by and large the instruments complement each other and form a consistent mix of policy instruments the structure of the networks is driven by demand pull for both technologies systemic instruments increase interaction especially in the wind power network and are complementary to demand pull in fostering collaboration

intelligent agents for negotiations in market games i model in competitive markets human decision makers need assistance to determine potential coalitions that they can be part of note that such coalitions are legal provided market power is not monopolized we present an approach for designing specialized intelligent software agents that perform negotiations on behalf of their human counterparts and then suggest market strategies that the human can adopt our negotiation protocol is derived from cooperative game theory however it differs from the game theory literature in requiring virtually no trustworthy information exchange between the potential coalition partners in this paper we present the negotiation model

a simulation model for a competitive generation market the simulation of a wholesale electricity market should go beyond a simple optimization based on the operating costs of the generating units a model of a competitive electricity market must consider the market structure the strategy of the market participants and any other factor that lead to prices different from costs this paper presents cosmee a model of a wholesale electricity market based on simple bids that estimates expected bid prices and quantities system hourly prices and generation schedules taking into account the bidding strategies of generators and the structure of the market the model reflects the profit maximizing behavior of the market agents subject to different types of constraints cosmee has been used to simulate a real wholesale market