A fire on a bucolic stretch of California coast has threatened the rapid growth of an industry considered key to greening the power grid — and keeping the lights on. Midway through the afternoon of Jan. 16, flames erupted from …

A fire on a bucolic stretch of California coast has threatened the rapid growth of an industry considered key to greening the power grid — and keeping the lights on. Midway through the afternoon of Jan. 16, flames erupted from …