If proven economic, solar EOR technology could represent an environmentally and energy friendly solution for California’s heavy oil producers. Oil and gas professionals may not consider solar power to be a serious threat, but it is poised to make serious inroads into the heating and cooling market. Shell invested in a Singapore solar company and signed an agreement to purchase a Texas company with solar and other renewable assets. Along with its minority stake in a company that uses solar to generate steam for EOR in the Middle East, Shell catches some rays in the Asia Pacific, US, and Oman. In thermal enhanced oil recovery there is one big ingredient: steam.