By Cassandra Sweet | The Wall Street Journal
Some costly high-tech solar power projects aren’t living up to promises their backers made about how much electricity they could generate.
Solar-thermal technology, which uses mirrors to capture the sun’s rays, was once heralded as the advance that would overtake old-fashioned solar panel farms. But a series of missteps and technical difficulties threatens to make newfangled solar-thermal technology obsolete.
The $2.2 billion Ivanpah solar power project in California’s Mojave Desert is supposed to be generating more than a million megawatt-hours of electricity each year. But 15 months after starting up, the plant is producing just 40% of that, according to data from the U.S. Energy Department.
