When we talk about renewable energy sources it is inevitable to miss the following two terms:

1. Renewable Energy Credits

2. Renewable Energy Certificates

Definitions of renewable energy credits on the Web:

• RECs — also known as tradable renewable certificates, or green tags — represent the environmental attributes of a unit of electricity generated …
  www.ccmproject.org/glossary.php
• One REC (also known as a Green Tag) represents one megawatt hour (MWh) of renewable energy that is physically metered and verified. …
  www.utilitechfinance.com/glossary.html
• represent the environmental and economic value of electricity produced from clean, renewable, emission-free energy resources that are safe for our …
  www.diamondpackaging.com/green/educate/definitions.htm

• Commonly referred to as a green tag and similar to carbon offsets, this is the purchase of a 1 megawatt-hour (MWh) unit renewable energy. …
  earth911.org/product-stewardship/product-stewardship-glossary/

Definitions of renewable energy certificates on the Web:

• Renewable Energy Certificates (RECs), also known as Green tags, Renewable Energy Credits, Renewable Electricity Certificates, or Tradable Renewable Certificates (TRCs), are tradable, non-tangible energy commodities in the United States that represent proof that 1 megawatt-hour (MWh) of …
  en.wikipedia.org/wiki/Renewable_Energy_Certificates
• RECs are created under the federal MRET scheme either by installing solar hot water heaters or generating renewable energy.
  www.co2australia.com.au/index.php

1. Renewable Energy Credits – Definitions

   Definitions of renewable energy credits on the Web: Renewable Energy Certificates (RECs), also known as Green tags, Renewable Energy Credits,...

2. SunPower and PPL EnergyPlus Sign 10-Year Purchase Agreement for Renewable Energy Credits

     TRENTON, N.J., Feb 13, 2009 /PRNewswire-FirstCall via COMTEX News Network/ — SunPower Corp. (Nasdaq: SPWRA, SPWRB), a manufacturer of...

3. India Renewable Energy Certificates system

   As of 2011, the Indian government launched the Renewable Energy Certificates (RECs) system to rapidly increase the share of renewable...

4. Pike Research – Renewable Energy Certificates Market Could Nearly Triple in Size by 2015

   Renewable Energy Certificates Market Could Nearly Triple in Size by 2015, According to Pike Research The Renewable Energy Certificate (REC)...