Sustainability Simplified GLOSSARY



The extra benefit or impact gained from a particular action or investment in environmental conservation or sustainability. Learn more -> What is Additionality?


Energy Attribute Certificates (EACs)

A broader term encompassing various types of certificates that verify the environmental attributes of renewable electricity generation. Learn more -> What are Energy Attribute Certificates (EACs)?


Price Hedging

Strategy to reduce the risks associated with price fluctuations in environmental commodities markets. Learn more -> What is Price Hedging?

Power Purchase Agreement (PPA)

A legal contract between a power generator and a buyer detailing the terms and conditions of purchasing electricity. Learn more -> What is a Power Purchase Agreement (PPA)?


Renewable Electricity

Electrical energy generated from renewable and sustainable energy sources such as hydro power, solar power, wind power, etc. Learn more -> What is Renewable Electricity?

Renewable Portfolio Standard (RPS)

A regulatory policy requiring electricity providers to supply a minimum percentage of customer demand with eligible sources of renewable electricity. Learn more -> What is a Renewable Portfolio Standard (RPS)?

Renewable Energy Certificates (RECs)

A tradable, market-based instrument representing the environmental attributes of electricity generated from renewable energy sources. Learn more -> What are Renewable Energy Certificates (RECs)?


Unit Contigency

Occurs when a facility or carbon project has additional or a surplus of environmental credits beyond what is required for compliance or usage. Learn more -> What is Unit Contingency?



The specific year in which the environmental attribute was generated or associated with the reduction or production of renewable energy or emissions. Learn more -> What is a Vintage?

Virtual Power Purchase Agreement (vPPA)

A financial contract used to procure renewable energy between a renewable energy developer and a buyer without the physical transfer of electricity. Learn more -> What is a Virtual Power Purchase Agreement (vPPA)?