Wind power is frequently curtailed. All commercial/utility scale wind turbines can control blade pitch, and all but the smallest residential-scale wind power h

Wind power is frequently curtailed. All commercial/utility scale wind turbines can control blade pitch, and all but the smallest residential-scale wind power have braking systems to prevent runaways. Controlling blade pitch is also important for maximum efficiency at regular wind speeds. Safe curtailment is particularly important for wind power, because storms carry two orders of magnitude more wind energy than a light breeze. Solar doesn't vary that much from day to day. Ideally, though, rather than curtailment, we'd have enough dispatchable demand to soak up all of that free energy. Hopefully, soon it'll be a bunch of internet-connected lithium-ion batteries.