Renewable Portfolio Standards (RPS) have been a staple energy policy in the state of Colorado since 2004. While there has been a steady increase to the RPS percentages over the years, there have been several points where this policy has been significantly contested. This paper explores the political decision making of the two largest electricity producers in the state, Xcel Energy and Tri-State Generation and Transmission Association, to determine at what points that the costs of legislation exceeded the costs of opposition for those two organizations. Using this information, the paper explores the implications these political battles have on characterizing Colorado as a state with renewable path dependency and renewable policy feedback. / Master of Arts / Since 2004, Colorado has enacted several successful laws to increase renewable energy use within the state. However, in recent years these laws have failed to achieve their goals. By analyzing the two largest producers of electricity in the state, Xcel Energy and Tri-State Generation and Transmission Association, this paper tries to answer what parts of the policies were too costly for the organizations to accept. Using this information, this project concludes that the current renewable energy policies are unlikely to be repealed in the future, but there is some evidence to suggest that the rate of renewable energy policy enactment may decrease.

Renewable portfolio standards (RPS) are one of the most common state policies meant to encourage clean energy use. They require that utilities purchase electricity from certain qualifying electricity generators, usually with no reference to the cost of that electricity. AlthoughRPS are meant to clean up electricity generation through using clean energy sources instead of fossil fuels, they may not do so effectively. Further, some energy companies may lobby state legislators to include their energy sources regardless of their actual environmental benefit. The actual relationship between enacting an RPS and a state’s emissions from energy production is unclear. I explore RPS associations with carbon emissions. I collect data from 1960 to 2017 on factors related to environmental quality, energy production, and state economic factors. The data availability varies, however, so the most expansive variables are from 1960 to 2017 while many others fall into a shorter timeframe.The dataset relies heavily on the State Energy Data System (SEDS) that the Department of Energy’s Energy Information Administration (EIA) maintains, but also draws from a variety of other academic sources. Other variables, such as the dates of electricity market restructuring, I collect myself from primary sources.After accounting for existing linear trends in the data there appears to be no statistically significant relationship with RPS and carbon emissions.

Thesis advisor: Frank Gollop / Thesis advisor: James Dalton / There is a push for more electricity from renewable energy sources in the United States and around the world, but debate exists over the best policy to achieve this growth. Two common policies include renewable portfolio standards and feed-in tariffs. Using two Energy Information Administration forecasts from 2005 to 2030, this study examines the impacts of possible federal renewable portfolio standards in the United States through a benefit-costs analysis. Using the same benefit-cost analysis, a feed-in tariff policy in Germany and a unique renewables obligation in the United Kingdom are also examined and the results are compared. This study finds that only one of the four examined policies has a net benefit to society, the policy being a renewable portfolio standard requiring 25% of electricity supplied in the United States to be from renewable energy sources by the year 2025. The economic theory gives support to the superiority of renewable portfolio standards, although more study in needed on the dynamic efficiencies and other possible policy options. / Thesis (BA) — Boston College, 2009. / Submitted to: Boston College. College of Arts and Sciences. / Discipline: College Honors Program. / Discipline: Economics Honors Program. / Discipline: Economics.

京都大学 / 新制・課程博士 / 博士(地球環境学) / 甲第24057号 / 地環博第220号 / 新制||地環||42(附属図書館) / 京都大学大学院地球環境学舎地球環境学専攻 / (主査)准教授 森 晶寿, 教授 宇佐美 誠, 准教授 吉野 章 / 学位規則第4条第1項該当 / Doctor of Global Environmental Studies / Kyoto University / DFAM

Hawai‘i has implemented renewable energy goals that assume continued investments by solar consumers who seem unaware of their role in the policy's success. Without the renewable resource generation that will come from these investments, the state will be unable to achieve its energy mandate. Using Sabatier and Jenkins-Smith's advocacy coalition framework and Ajzen's theory of planned behavior as the foundation, the purpose of this study was to better understand the perspectives of potential solar consumers on the Island of O‘ahu regarding the state's renewable portfolio standards, their level of knowledge regarding consumer impact on this policy, and their perceptions of the roles of the public utilities commission and electric utility company in the implementation of projects associated with achieving the state's energy goals. Data were collected through interviews with 17 participants who represented a small portion of consumers who had begun the solar program application process but had not received approval to install panels at their residences. These data were inductively coded and subjected to a thematic analysis. Key findings indicate that consumers lack sufficient education about the state's energy goals, and that their participation in the policy process is essential for the continued growth of customer-sited solar installations. Implications for positive social change stemming from this study include recommendations for policymakers and solar program developers to engage in more inclusive educational outreach with consumers regarding the state's required renewable energy goals.

Renewable Portfolio Standards (RPS) require electricity providers to supply a minimum fixed percentage or total quantity of customer load from designated renewable energy resources by a given date. These policies have become increasingly prevalent in the past decade as state governments seek to increase the use of renewable energy sources. As a policy tool, RPS provide a cost-effective, market-based approach for meeting targets which promote greater use of renewable energy in both regulated and deregulated markets. To facilitate the obtainment of Renewable Portfolio Standards, most states allow the trading of Renewable Energy Credits (RECs). RECs represent the environmental attributes of renewable energy generation which are decoupled from the generated power. These credits are created along with the generation of renewable energy, decoupled from energy generation, tracked by regional systems, and eventually purchased by retail suppliers to fulfill their RPS obligations. As of April 2010, RPS have been passed into law in 29 states and Washington D.C. and an additional 6 states have non-mandatory renewable portfolio goals however the U.S. government has yet to enact a Federal Renewable Portfolio Standard. Although the final requirements and details of a Federal RPS are undecided, federal standards would be unlikely to preempt or override state programs which are already in place. A key concern regarding the passage of a federal RPS is that a national REC market would result in a shift of wealth from states with few renewable energy resources and limited resource potential to regions richer in renewable resources. Because of the implications that a federal renewable portfolio standard would have on the economy, the environment, and the equitable treatment of all the states, many issues and concerns must be resolved before federal standards will be passed into law. A theoretical case study for an electric utility generation planning decision that includes obligations to meet Renewable Portfolio Standard is presented here. A framework is provided that allows decision makers and strategic planning teams to: assess their business situation, identify objectives of generation planning, determine the relative weights of the objectives, recognize tradeoffs, and create an efficient portfolio using Portfolio Theory. The case study follows the business situation for Austin Energy as it seeks to meet Texas State RPS and mandates set by Austin City Council and prepares for potential National RPS legislation. / text

xii, 97 p. / Electricity generated from woody biomass material is generally considered renewable energy and has been considered carbon neutral. However, recent criticism from scientists argues that the greenhouse gas (GHG) emission profile of bioenergy is nuanced and the carbon neutral label is inappropriate. An initial carbon debt is created when a forest is harvested and combusted for bioenergy. Because forests re-grow over a period of years, life cycle analyses show that bioenergy generated from whole trees from forests may not reduce GHG emissions in the short term, as required to combat climate change. State renewable portfolio standards and federal laws and proposed legislation designed to incentivize renewable energy typically define eligible forms of biomass that qualify for these incentives. Most of these definitions are very broad and do not account for GHG emissions from bioenergy. Federal and state laws should incorporate life cycle analyses into definitions of eligible biomass so that these laws incentivize biomass electricity that reduces GHG emissions in the next several decades. / Committee in charge: Roberta Mann, Chairperson; Scott Bridgham, Member