Learn the Issues
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Leadership Principles in Renewable Electricity Use
This page provides an overview of the recent REC prices and strongly encourages all Partners impacted by REC price increases to maintain the ongoing leadership principles of using high-quality renewable resources
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Shared Renewables
This page outlines shared renewables, such as community solar, where multiple customers to buy, lease or subscribe to a portion of a shared renewable electricity system that is located away from their home or business
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Target Setting
This page highlights various approaches to environmental target setting, including , renewable energy, GHG and value chain targets, absolute vs intensity based targets, the importance of scale, magnitude and timing.
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Green Power Pricing
This page describes the dynamic pricing of RECs based on location, supply, demand and consumer choice.
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Renewable Energy Certificates (RECs)
A renewable energy certificate (REC) is a market-based instrument that represents the property rights to the environmental, social, and other non-power attributes of renewable electricity generation.
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Funding Opportunities for Electric Utilities
Lists and links to funding opportunities for electric power utilities that may help offset costs of SF6 emissions reductions or other electric grid improvements.
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SF6 Mitigation Opportunities
Information from the Electric Power Systems Partnership on reducing SF6 emissions. Mitigation options include best practices and alternatives to SF6, like vacuum breakers and alternative gases.
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Aluminum Industry
Provides basic information about perfluorocarbon (PFC) emissions from primary aluminum production and resources from the former Voluntary Aluminum Industrial Partnership.
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Acid Rain Program
View an overview of the Acid Rain Program, including information on the program's SO2 and NOx reductions.
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Sources and Solutions: Agriculture
Agriculture can contribute to nutrient pollution when fertilizer use, animal manure and soil erosion are not managed responsibly.
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CSAPR Compliance Year 2019 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2019 compliance year.
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Cross-State Air Pollution Rule - Additional Actions
This page provides a regulatory time line of the CSAPR and the Final Update Rule including legal challenges and court rulings.
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Natural Disasters
Prepare for or recover after risks to health and the environment due to natural disasters.
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CSAPR Compliance Year 2020 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2020 compliance year.
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CSAPR Assurance Provision NODAs
For each calendar year for which the CSAPR assurance provisions are triggered, EPA publishes a preliminary and final notice of data availability (NODA) in the federal register.
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CSAPR Compliance Year 2018 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2016 compliance year.
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CSAPR Compliance Year 2023 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2023 compliance year.
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Geoengineering
Geoengineering refers to activities intended to cool the Earth or remove greenhouse gases from the air and has health and environmental impacts. This area summarizes geoengineering, what EPA is doing, and frequent questions, including on contrails.
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Analysis of the Proposed Supplemental Interstate Transport Rule
IPM analyses of the Proposed Supplemental Interstate Transport Rule
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Analysis of the Final Federal Good Neighbor Plan Addressing Regional Ozone Transport for the 2015 Ozone National Ambient Air Quality Standard
IPM analyses of the Good Neighbor Plan for 2015 Ozone NAAQS.