How ‘Demand Flexibility’ Could Boost Renewables and Save Texas Billions. Rocky Mountain Institute models how a stack of distributed energy resources can solve the duck curve and curtailment challenges—without using natural gas. ‘Demand flexibility’ is Rocky Mountain Institute’s term for the capability of water heaters, air conditioners, plug-in electric vehicles, and other loads to provide a massive set of benefits to the grid — if they’re smart enough to handle it. On Wednesday, RMI released a new report on the demand flexibility equation, modeled on America’s version of an islanded energy market — Texas’ transmission power grid. The results, run over hourly forecasts through an entire year, indicate that the investment in demand flexibility would more than pay for itself in reduced curtailment, flattened peaks, and power plants never built. The model forecasts high future solar and wind growth on the state’s existing market structures and resources, then adds in tens of millions of demand flexibility assets — to be precise, 4.2 million residential and commercial water heaters, 3.9 million home and business ceramic brick heat storage systems, 3.7 million ice energy AC systems, 15 million household plug loads, and 11.5 million grid-responsive electric vehicles.
Green Tech Media 14th Feb 2018 read more »
RMI 14th Feb 2018 read more »