Are you or companies considering joining RE100? http://there100.org/going-100
"Companies joining RE100 make a global, public commitment to 100% renewable electricity.
To achieve this goal, they must match 100% of the electricity used across their global operations with electricity produced from renewable sources – biomass (including biogas), geothermal, solar, water and wind – either sourced from the market or self-produced.
RE100 companies can achieve 100% renewable electricity through:
Production of renewable electricity from their own facilities. These can be grid-connected and onsite or offsite, or entirely off the grid. A company may consume its own renewable electricity or decide to make production-only claims.
Purchased renewable electricity sourced from generators and suppliers in the market. This includes direct purchases from specific generators (e.g. power purchase agreements), which can be located onsite or offsite. It also includes retail purchases from suppliers and utilities, and the purchase of stand-alone (“unbundled”) energy attribute certificates."