(Bloomberg) -- A cold, rainy winter in California has exposed the challenges that can arise when a poster child for the clean energy transition isn’t fully ready to make the leap from fossil fuels. While California has long been at the forefront of the push into cleaner energy, its ambitions belie its reality – on some days, gas-fired generation can still make up more than half of electricity supplies in the region, and it burns more of the methane-rich combustible each year than France. “We are essentially stuck with the price of natural gas in California,” he said