This sub-metric is used to evaluate the metric : ""3.3 Renewable energy""
With this metric we aim to assess companies' efforts to source energy from both purchased and self-generated renewable sources.

Renewable energy or 'green energy' generally emits fewer GHG emissions than other energy sources that supply the electricity grid.

Examples are solar photovoltaic panels, solar thermal, geothermal energy, landfill gas, low-impact hydropower and wind turbines. This description can be found on page 98 and chapter 4 of the Greenhouse Gas Protocol.