Griffin Davis , Tech Times 26 April 2023, 01:04 pm A stable renewable energy grid is actually possible, as claimed by some experts. They said that energy grids relying on 100% green power that is stable on a daily basis are achievable. (Photo : Photo by Justin Sullivan/Getty Images)The sun shines over towers carrying electical lines June 30, 2007 in South San Francisco, California. With temperatures over 100 degrees in many parts of the state, the California Independent System Operator, which manages most of the California electricity grid, is planning on declaring a minor power emergency later in the day.