California and Texas are reaching new heights in utility-scale solar generation this year. While both grids are approaching 20 GW peaks in solar production, the backdrop of each grid is markedly different. CAISO’s solar build-out represents a larger proportion of the region’s much smaller peak demand and is nearly matched by behind-the-meter (BTM) solar capacity. Additionally, CAISO’s solar fleet benefits from a well-coordinated relationship with a larger, longer-duration battery fleet, facilitated by market rules. In contrast, ERCOT manages a higher load, a generating fleet with substantially more thermal assets, and surprisingly little BTM given the high homeownership and strong solar potential across the state. Batteries in ERCOT by comparison are more freewheeling in how they bid and operate while averaging substantially shorter durations. We put a little school spirit into the color scheme for this. Hopefully, the rivalry stays exciting through the rest of 2024! To track these records and more, check out our site.
22 GW by end of year in ERCOT! And they are not exporting really any of it into another ISO/BA unlike CAISO. Much bigger market size, but still incredible to go from sub 2.5 GW to 20 GW in 4 years. Lots of gas burn goes away in ERCOT..... (average gas demand, not peak gas deamnd)
Connor Waldoch / Grid Status does the CAISO solar generation shown here include BTM solar generation or is this purely FTM?
☀ Sunshine for the win. Imagine that. 😎
Nice animation — particularly keeping the data points in.
Very interesting!
Energy, Economics & Policy | Research • Analysis • Commentary • Opinion
2moCool. Now plot power prices... power rationing... and blackouts.