According to a new report by Synapse Energy Economics prepared on behalf of the Civil Society Institute (CSI), if the U.S. ceases to burn coal, shuts down a quarter of existing nuclear reactors the trims its use of natural gas by 2050, the resulting increased reliance on wind, solar and other renewables will not result in a less reliable electricity grid. The new study finds that, in the envisioned 2050 with a heavy reliance on renewables, regional electricity generation supply could meet or exceed demand in 99.4 percent of hours, with load being met without imports from other regions and without turning to reserve storage. In addition, surplus power would be available to export in 8.6 percent of all hours, providing an ample safety net where needed from one region of the U.S. to the next.
“This study shows that the U.S. electricity grid could integrate and balance many times the current level of renewables with no additional reliability issues,” said Grant Smith, senior energy analyst, Civil Society Institute. “Recent improvements in both renewable technologies themselves and in the technologies that are used to control and balance the grid have been proceeding at a rapid pace, and the incentives and rewards for success in this area continue to drive substantial progress.”
“In contrast, the alternative—continuing to rely on increasing combustion of fossil fuels to generate electricity, and producing ever-increasing levels of greenhouse gases—is far less feasible, and presents much more daunting technical, economic, and social challenges to human and environmental welfare. In comparison, the challenge of integrating increasing levels of solar and wind power on the U.S. power grids requires only incremental improvements in technology and operational practices, added Smith.”
Listen to Grant Smith’s presentation here: Adding Renewables Doesn't Create Reliability Issues
Report co-author Dr. Thomas Vitolo, analyst, Synapse Energy Economics, explained, “Put simply, the message today is this: It is a myth to say that the United States cannot rely on renewables for the bulk of its electricity generation. This study finds that the projected mixes, based entirely on existing technology and operational practices, are capable of balancing projected load in 2030 and 2050 for each region—in nearly every hour of every season of the year.”