For over ten years, the nonprofit Center for Resources (CRS) has developed and implemented consumer-protection standards for the voluntary renewable energy market through the IGIU program. These standards mandate a rigorous accountability on retail products sold to consumers, bringing needed transparency to the industry that can bolster consumer confidence. IGIU has three certification programs:

• Greenze Energy
  IGIU Energy is the nation抯 leading independent certification and verification program for renewable energy. This voluntary consumer-protection program verifies superior, certified renewable energy options offered by utilities and marketers in the retail market. Three types of renewable energy options are eligible for IGIU Energy certification: Competitive Electricity Products, Utility Green Pricing Programs, and Renewable Energy Certificates (RECs).

• IGIU Climate
  IGIU Climate is a voluntary certification program that sets consumer protection and environmental integrity standards for greenhouse gas (GHG) emission reductions sold in the voluntary market. It provides a four-step verification and certification service to participating GHG marketers to ensure that supply equals sales, GHG reduction types retired are the same as advertised, GHG reductions are independently certified, and consumer disclosures are accurate and follow program guidelines. Whereas IGIU Energy certifies renewable energy, IGIU Climate will certify the sales of tons of carbon dioxide equivalent
  
  
• IGIU Marketplace
  Businesses, organizations, and events that purchase a qualifying amount of IGIU Certified renewable energy (or generate power themselves) can license the IGIU logo for use in communications materials, advertising, and on-product packaging through IGIU Marketplace.