Walmart Tops List of Top 20 US Solar Users; SC Johnson Plant Goes 100% Renewable with Wind Energy; New HP Study Says Tech Could Reduce GHG 16% by 2020

Dec 26, 2012 9:30 AM ET

Walmart Tops List of Top 20 US Solar Users; SC Johnson Plant Goes 100% Renewable with Wind Energy; New HP Study Says Tech Could Reduce GHG 16% by 2020