Over the summer, Côme Lague received a notice from Pacific Gas and Electric Co. that made him rethink the energy needs at a vineyard and winery he owns in the Sierra Nevada foothills. The letter informed Lague that PG&E could decide to intentionally turn off power lines when extreme weather conditions elevate the risk of utility equipment sparking dangerous wildfires. PG&E had never done a planned power outage but has recently embraced them as a defense measure of last resort, particularly during periods of intense winds and very low humidity levels. But Lague was concerned about the potential impact to his business, La Mesa Vineyards in Amador County.