Plates at our planet s surface move because of the intense heat in the Earth s core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again.
PG&E on Wednesday did not offer a specific figure for how much the switch to renewable power would boost electricity rates in 2015. But in the past, the utility has said that rates will rise 1 percent to 2 percent each year as a result.
The average raise has hovered at 3% for both 2014 and 2015, according to the consulting firm Towers Watson, and its annual survey noted that U.S. employers plan to give their workers the same increase in 2016. However, businesses paid their best employees substantially more.