Zeroing In: Carbon Neutral 2050 Season 1 Episode 4 Recharging the Grid ( Air Date 2021-02-28 ) Genre Documentary, Talk category. Overview "Innovators in California are always testing the boundaries of technology. Some are reimagining renewable energy as they recharge the grid. They're applying techniques used in gaming to power their businesses and their homes. They're drawing on the strength of the sun, driving turbines with the force of the wind, and reengineering how to harness the vitality of nature.".