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Pennsylvania is required to reduce power sector emissions by 24-25 percent below 2012 levels by 2030 under the Clean Power Plan. Analysis indicates that current clean energy policies and improved power plant efficiency could achieve a 13 percent reduction by 2030. To fully meet or exceed targets, the state can expand its energy efficiency programs (Act 129) and alternative energy portfolio standard (AEPS) after 2021, potentially cutting emissions by 46 percent below 2012 levels by 2030. Such measures are described as cost-effective, with potential for the state to earn over $160 million annually by selling unused emissions allowances between 2022 and 2030.

Global climate finance reached at least USD 391 billion in 2014, driven by a 26% increase in private investment in renewable energy and a steady rise in public finance. Private finance, totaling USD 243 billion, remains the largest source, with China emerging as a major hub for renewable energy investment. Public finance reached USD 148 billion, with Development Finance Institutions (DFIs) contributing the bulk of these funds. The report highlights a strong domestic preference, with 74% of total flows remaining within the country of origin. Mitigation projects dominated the landscape, accounting for 93% of total finance, while adaptation finance reached USD 25 billion.

The document provides a comprehensive overview of clean energy employment, highlighting the U.S. and global landscapes. In the U.S., it details job figures across energy efficiency (buildings, appliances, transport) and renewable energy (solar, wind, biofuels, geothermal, hydro, and waste-to-energy). Globally, it identifies China as the leader in renewable energy employment, followed by Brazil, the U.S., India, and Germany, with solar PV being the largest employment driver worldwide.

The report outlines a three-step approach for improving the performance of publicly-owned utilities (POUs). The first step involves 'no regrets' actions, such as engaging diverse stakeholders to define goals and using Integrated Resource Plans (IRPs) to balance reliability, cost, and environmental targets. The second step focuses on governance evolutions, specifically delineating the roles of boards and management and implementing board self-evaluations. The third step suggests more drastic measures for lagging performance, including revenue decoupling to support energy efficiency, performance-based employee compensation, and the use of third-party non-profit entities for specific utility functions.

The document examines the transition of isolated communities from a total dependence on imported oil to renewable microgrids. It identifies high electricity costs, environmental concerns, and abundant local resources as primary drivers for this shift. Through ten detailed case studies—including locations such as Kodiak, Alaska, and El Hierro, Spain—the report highlights the critical role of energy storage (batteries, flywheels, and pumped hydro) and energy efficiency in maintaining grid stability. Key findings indicate that renewable integration can significantly reduce retail electricity rates and improve system resiliency, though it often requires a phased technical approach to overcome stability and logistical challenges.

The Union of Concerned Scientists analyzes how a hypothetical Pennsylvania green bank, with an initial $135 million capitalization, could leverage $4.2 billion in total investment by 2030. This initiative would support 780 MW of wind and solar capacity, save $375 million annually on electricity bills, and reduce CO2 emissions by 4.8 million tons per year, contributing 11% of the state's required reductions under the Clean Power Plan.

The 'Environmental Impact Assessment Guideline for Renewable Energy Projects' outlines the regulatory framework and procedural requirements for deploying renewable energy technologies in South Africa. It details the environmental impacts of various technologies—including wind, solar, biomass, and hydropower—and maps these to the specific national legislation and authorisations required under the National Environmental Management Act (NEMA) and other sectoral laws. The guide provides a structured approach to the Basic Assessment (BA) and Scoping and Environmental Impact Reporting (S&EIR) processes, including timeframes, stakeholder roles, and mitigation strategies to ensure sustainable development.

Energy Innovation used the Energy Policy Simulator to determine that a specific combination of six policies could meet the Clean Power Plan's goal of reducing power sector CO2 emissions by 32 percent by 2030 while saving the U.S. economy nearly 40 billion dollars between 2016 and 2030. The recommended package focuses on improving coal plant efficiency, accelerating coal retirements, enhancing building and industrial energy efficiency, implementing a 25 percent national average renewable portfolio standard, and increasing transmission capacity. The report contrasts this approach with more expensive alternatives, such as those relying heavily on nuclear power or carbon capture and storage.

The document analyzes the transformation of Portland's Pearl District from a deindustrialized warehouse area into a high-density, mixed-use neighborhood. It highlights the synergy between transit-oriented development, historic preservation, and innovative financing mechanisms like Tax Increment Financing (TIF). The Brewery Blocks are presented as a premier example of sustainable design, featuring LEED-certified buildings and a district cooling system. The report concludes that prioritizing livability, human capital, and stakeholder collaboration is essential for sustainable urban growth.

In 2014, Lockheed Martin completed an ESPC at the U.S. Embassy in Nicaragua, achieving a 54 percent energy reduction across nine buildings. The project integrated a 956 kW solar PV system—the State Department's largest overseas—which is projected to offset 37% of the site's energy consumption. Key measures included LED replacements, chiller-plant optimization, and HVAC upgrades. To overcome challenges such as a lack of local utility incentives and frequent staff turnover, the project utilized third-party expertise from LBNL and the DOE, and implemented a memorandum of agreement (MOA) to ensure continuity of project knowledge.

Rooftop solar in the United States experienced rapid growth between 2008 and 2014, driven by a 45% decrease in household system prices from 2010 to 2014 and the rise of third-party ownership models. The technology provides significant environmental benefits, including zero carbon emissions and minimal water use during electricity generation, while supporting a domestic industry that employed over 170,000 people by 2014. Growth is further sustained by federal and state policies such as net metering, feed-in tariffs, and a 30% federal investment tax credit.

The document describes the physics of solar photovoltaic (PV) cells, which use doped silicon layers to create an electric field that converts sunlight into electricity. It details three main cell types—single-crystal, polycrystalline, and thin film—and discusses the benefits and challenges of integrating both rooftop and large-scale solar systems into the electricity grid, including issues of variability and transmission.

The report analyzes Costa Rica's transition from an agricultural to an export-led economy, highlighting successes in biodiversity and renewable energy alongside critical failures in wastewater management and public transport. It argues that a lack of sustainable public infrastructure and a mismatch in workforce skills hinder the country's goal of carbon neutrality by 2021. The authors recommend streamlining public procurement, diversifying the energy mix beyond hydropower, and implementing a green industrial policy to reduce economic vulnerability to external shocks.

The document defines on-bill financing (OBF) as a mechanism where energy improvement costs are repaid via monthly utility bills. It argues that OBF reduces high up-front costs and expands access to financing by using utility payment history instead of traditional credit scores. The guide provides four case studies from Kansas, South Carolina, Florida, and Oregon, demonstrating that OBF can support a range of upgrades from weatherization to solar PV with very low default rates (typically under 3%).

The document examines the proposal by Karadeniz Holdings to provide power ships to South Africa to address a depleting reserve supply margin caused by inadequate investment in generation capacity since 1994 and delays at Medupi and Kusile. While power ships are presented as a more efficient and cheaper alternative to Eskom's diesel-powered open cycle gas turbines (OCGTs)—costing R2.00 to R2.50/kWh compared to R3.00 to R4.50/kWh—Eskom has expressed skepticism, arguing that a 310MW capacity is too small for the national grid. The author notes that power ships remain significantly more expensive than solar and wind power from Independent Power Producers (IPPs) and suggests that opening the market to IPPs may offer better short- and long-term benefits.

The paper examines how different DER ownership models can be used to integrate cost-effective technologies into outdated regulatory frameworks. It argues that no single model is universal, but each can work if the value proposition aligns with the public interest and utilizes an adaptive approach prioritizing fair compensation and transparency. Utility-owned models are effective for early adoption and public goals but risk cost overruns and market power issues. Third-party and customer-owned models excel when they have transparent access to the full value of DERs through dynamic rate design or competitive markets.

The report analyzes eight case studies—seven federal and one municipal—that utilized Energy Savings Performance Contracts (ESPCs) to achieve deep energy retrofits. These projects cumulatively exceeded 600 billion BTUs in energy savings with an average energy use reduction of 58%. The document identifies six overarching best practices: setting aggressive long-term goals, engaging diverse stakeholders, establishing strong support systems, adopting a 'clean sheet' design mindset, using iterative and holistic design processes, and incorporating ongoing feedback and occupant involvement.

The report analyzes the impact of raising California's Renewables Portfolio Standard (RPS) to 50 percent by 2024. It finds that while this transition reduces GHG emissions and production costs, it increases renewable curtailment, primarily driven by downward reserve and regional generation requirements. The study concludes that non-fossil flexibility—including electricity storage, advanced demand response, and allowing renewables to provide reserves—is significantly more effective at reducing curtailment and emissions than increasing the flexibility of natural gas power plants.

The report argues that a "carbon market only" approach is insufficient for the cost-effective decarbonisation of the European power sector. While the EU ETS is an effective tool for driving fuel switching in the residual thermal generation mix, it cannot alone drive necessary investments in low-carbon technologies due to high capital costs, revenue risks, and the 'merit order effect'. The authors recommend a policy mix where the EU ETS is complemented by tailored national investment supports—such as feed-in tariffs or contracts for difference—to reduce the cost of capital. To ensure coherence, the report proposes an ex-ante cap adjustment process for the ETS based on Member State National Energy and Climate Plans and the development of long-term decarbonisation strategies back-casted from 2050.

The Bujagali Hydropower Project in Uganda serves as a case study for the use of combined risk mitigation instruments—specifically the International Development Association's (IDA) partial risk guarantee (PRG) and the Multilateral Investment Guarantee Agency's (MIGA) political risk insurance (PRI)—to attract private capital in high-risk environments. The project mobilized nearly $300 million in commercial loans and private equity, achieving a ratio of almost one U.S. dollar of private capital for every two U.S. dollars of public financing. These instruments enabled commercial banks to offer loans with maturities of 16 years and lower interest rates, which reduced the required initial electricity tariff by between 7% and 60%. The resulting levelized cost of energy (LCOE) was approximately 107 USD/MWh, significantly lower than the cost of the emergency thermal power it replaced. While effective, such complex structures have been underutilized due to high transaction costs and restrictive DFI policies, though recent World Bank Group modernizations aim to expand these tools to smaller-scale renewable energy projects like solar and wind.