1. EPRI: Distributed Energy Resourceshttp://www2.epri.com/Our-Work/Pages/Distributed-Electricity-Resources.aspx
2. A Review of Distributed Energy Resourceshttp://www.nyiso.com/public/webdocs/media_room/publications_presentations/Other_Reports/Other_Reports/A_Review_of_Distributed_Energy_Resources_September_2014.pdf
3. Renewable Energy Statisticshttp://ec.europa.eu/eurostat/statistics-explained/index.php/Renewable_energy_statistics