Energia z farm fotowoltaicznych coraz tańsza
http://www.juwi.com/newsroom/press/detail/juwis_new_pv_power_plant_in_south_africa_will_produce_clean_electricity_with_levelized_costs_of_o.html
http://www.pv-tech.org/news/saudi_electric_company_project_dips_under_five_cents_per_kwh
http://www.pv-magazine.com/news/details/beitrag/india–telangana-gets-lowest-bid_100020472/#axzz3hjj8YfF0