Batteries Now Meeting 20% of California Evening Power Demand

Discussions about electric vehicles (EVs) often focus on the additional demands they will put on the power grid in future years, with concerns about the grid’s reliability and ability to meet peak demand often taking center stage. There’s no doubt that a widespread transition to EVs would pose real challenges, but utilities in California and elsewhere are also starting to think creatively about how to transform those challenges into an opportunity — although there are significant hurdles to clear along the way, including the needed buy-in from EV owners. In today’s RBN blog, we explain California’s so-called duck curve, show how certain EV solutions aim to address some of the power grid’s current problems, and look at some ways to get EV drivers to become active (and willing) participants in a vehicle-to-grid (V2G) initiative, which increasingly looks like an essential element in any long-term plan.

The intermittent nature of renewable energy is a well-documented thorn in the side of efforts to decarbonize the power grid, especially with more wind and solar generation coming online every year. But while those sources of clean energy are not available all the time, it’s also true that they can sometimes produce more power than transmission lines or a power grid can handle during other periods, leading to curtailments. An increasingly important tool that can lessen the impact of both problems is power storage. In today’s RBN blog, we’ll address the limitations of today’s storage options and look at how long-duration energy storage (LDES) could play a critical role in the years ahead.

There’s no doubt about it: California’s decade-long efforts to expand the use of solar, wind, and other renewable energy and improve energy efficiency have enabled the state to significantly reduce its consumption of natural gas for power generation. But the Golden State’s rapid shift to a greener, lower-carbon electricity sector — and its push to shut down gas-fired power plants — has come at a cost, namely an increased risk of rolling blackouts, especially during extended heat waves in the West when neighboring states have less “surplus” electricity to send California’s way. The main problem is that while solar facilities provide a big share of the state’s midday power needs, there’s sometimes barely enough capacity from gas plants and other conventional generation sources to take up the slack when the sun sinks in the late afternoon and early evening. Today, we discuss recent developments on the power front in the most populous state, and what they mean for natural gas consumption there.