Solar is the world’s most used energy resource. Solar energy deployment has been growing over the last decade, 40% annually. New solar insulations include solar photovoltaic (PC) electric power, thermal megawatts (MWTh) of solar water heating, pool heating, and solar space heating and cooling. By 2025 its estimated that solar energy will contribute to 10% of the country’s energy demand. Future advances will be more “plug and play” technology that will straightforward, easy to assemble, and plug directly into the power grid.
The world’s largest and oldest power plant is in California. The US is the highest producer of solar power, producing more than half of all solar thermal power in the world. There are power plants under construction with many more proposed.
SolarCity (affordability option: lease instead of buy)