Tools & Resources
Green Tariff


A utility tariff or electricity rate which allows a class of customers to source a portion or all of their electricity from new renewable energy projects, typically through long-term contracts with the customer purchasing both the electricity from a renewable energy project and the associated RECs. Often these programs are designed for large customers and typically offer more favorable pricing than retail green pricing programs.

Also known as Renewable Energy Tariff, Sleeved PPA


In states with traditional electricity markets (meaning there is no retail choice of suppliers), customers must work with their default electricity provider to purchase their energy. In these markets, green tariffs are one utility solution for customers to procure renewable energy. Often green tariffs are designed for large customers, may require long-term contracts, and can be designed to drive specific new renewable energy projects. However, the availability and structure of each green tariff program varies by state, and can even vary within a state. For example, within one state, there may be multiple green tariffs from a single electricity utility. There may also be several electric utility providers in the same state with differing green tariff programs. When developing a renewable energy plan, it’s important to understand who your electricity provider is and what green tariff solutions are offered by your utility in your state.

Primary Considerations

  • What green tariffs are available in my state?
  • What is the status and eligibility of the green tariff(s)?


Green Tariff Tools & Resources

A State-by-State Policy Guide for Midsized Solar Customers National Renewable Energy Lab Factsheets
AWEA State Wind Energy Factsheets American Wind Energy Association 2019 Interactive Map
Community Power Map ILSR (Institute for Local Self-Reliance) 2018 Website
DSIRE (Database of State Incentives for Renewables and Efficiency) DOE/NC Clean Energy Technology Center 2018 Website
DSIRE Glossary Database of State Incentives for Renewables & Efficiency (DSIRE) Glossary
Electric Power Markets: National Overview Federal Energy Regulatory Commission 2017 Interactive Map
GHG Emissions Calculator EPA 2017 Tool
Green Power Supply Options EPA GPP 2018 Website
Green Tariffs Map WRI 2019 Website
IREC Glossary Interstate Renewable Energy Council (IREC) Glossary
Pathways to 100: An Energy Supply Transformation Primer for US Cities Meister Consultants Group / Cadmus 2017 Report
Policies and Incentives by State Database of State Incentives for Renewables & Efficiency (DSIRE) Interactive Map
Renewable Energy Procurement: A Guide to Buying Off-site Renewable Energy Melbourne Renewable Energy Project/City of Melbourne 2017 Report
SEIA Solar State-by-State Factsheets Solar Energy Industries Association Q3 2018 Interactive Map
SLED (State and Local Energy Data) Department of Energy 2018 Database
State-by-State Map of Energy Choice in the U.S American Coalition of Competitive Energy Suppliers Interactive Map
U.S. EIA Glossary U.S. Energy Information Administration Glossary
Wholesale Electricity and Natural Gas Market Data U.S. Energy Information Administration 2019 Database