Ten Countries now supply 100-257% of their electricity demand with WindWaterSolar Data web.stanford.edu/group/efmh/j... Graphs web.stanford.edu/group/efmh/j... WWS versus electricity price worldwide web.stanford.edu/group/efmh/j... and in the U.S. web.stanford.edu/group/efmh/j...

Batteries can now meet 75% of average grid demand and 44% of peak demand for 4 hours every day in the world's 4th-largest economy at a cost less than 1 percent the price of electricity More info www.caiso.com/documents/ke... web.stanford.edu/group/efmh/j... www.youtube.com/shorts/GQeOj...

And the rise of WindWaterSolar

The day-by-day 62% decline in fossil gas between 2023 and 2026 on the California ISO grid.

One day, a battery record. The next, a solar record Record 23.195 GW peak solar Fri Jul 10 on the CAISO grid 100th of 101 days & 166th of 191 (87%) in '26 with WWS>100% of demand Gas down 62% in '26 v '23 Solar, wind & batteries pushing gas off the grid, which is now the most stable in the US

Spread the word - another record on the 99th of 100 days in CA with >100% clean, renewable energy. New battery peak discharge record of 12.994 GW on the 27th straight, 99th of 100, and 160th of 185 (87%) days in '26 with WindWaterSolar meeting > 100% of demand, for an avg of 5.4 h/day.

And here is a visualization of the country-by-country penetration of WindWaterSolar web.stanford.edu/group/efmh/j...

Just another day, another 100% WindWaterSolar day 95 of the last 96 days and 161 of 186 (86.6%) all year have seen WWS meet>100% of demand Gas down 62.4%, batt up 337%, solar up 54%, wind up 15% '26 v '23 Demand almost same as in '23 WWS has provided 59% of all in-state CAISO electricity in '26

Happy Independence and Energy Independence Day Let's celebrate something really good in the US WindWaterSolar renewables & storage are proving themselves capable of providing reliable power. CAISO grid WWS has met >100% of demand for 93 of 94 days & 159 of 184 (86.4%) in '26 for an avg of 5.4 h/d

New plot showing the decline of fossil gas in CA For 7 days straight, fossil gas has met only 3-5.6% of demand. Gas down 62% in '26 v '23 WWS has provided a record 58.8% of demand in '26 so far. 92 of 93 and 158 of 183 (86.3) days in 2026 with WWS > 100% of demand for an avg of 5.4 h/day.

Phenomenal! Fossil gas has supplied only 3-5.6% of CAISO electricity each of the last 6 days, all in summer, and only 13.6% of electricity in all of 2026, DOWN 62% versus 2023. Meanwhile, solar is up 54.4%, wind is up 16%, and batteries are up 337% in '26 v '23.

Ho hum, only 89 of the last 90 days and 155 of 180 in 2026 with WindWaterSolar > 100% of demand on the CAISO grid, now averaging 5.3 h/d among all days. 58.6% of all demand met by WWS in '26. Gas down 61.3% in '26 v '23 and has supplied less than 4% of all demand for the last three days.

Gas meets only 3.3% and WindWaterSolar meets 77% demand on Sat Jun 27 in CA 153 of 178 days and 87 of 88 with WWS meeting>100% of demand for an avg of 5.3 h/d and 58.4% of all demand in 2026 Gas down 61%, batteries up 337%, solar up 55%, wind up 14% '26 v '23. Solar+batteries replacing gas daily

In 2008, skeptics claimed more than 20% variable renewables on a large grid was not possible. In 2017, they backtracked to 80%. And then to 90%. Then 95%. Once it became obvious that 100% renewables is possible, now they say, "not everywhere is like California" and "what about nighttime?"

Record battery peak discharge rate (12.617 GW at 8:10 PM) on June 23, which was the 149th of 174 days (85.6%) in 2026 with WindWaterSolar supply exceeding 100% of CAISO demand for part of the day. @govpressoffice.gov.ca.gov

Consistent, reliable, incredible. 3.5 years (2023-mid 2026) of WindWaterSolar production versus demand on CAISO grid. Not a single 3-day period with very low WWS, dispelling the myth that WWS will result in a week with no electricity, so long-duration storage is needed.

More crazy records in CA June 20 was a day not only with the highest WindWaterSolar as % of demand ever (164.6%), thus a day with the min net load ever (-9.2 GW), but also a day with the most hours WWS>100% of demand (10.33 h) in 2026 Plus, fossil gas supplied only 3.1% of demand.

I love my job. Progress like this helps overcome the bad news CAISO record peak WWS (30.1GW) surpasses highest 24-h demand (29.5GW) for first time ever in June 145 of 170 days (85.3%) 2026 w/WWS>100% of demand 57.75% of demand in '26 met w/WWS Gas down 61%, batt up 337%, solar up 56% '26 v '23

Replacing gas with renewables for California’s electricity has reduced twice the carbon as all the world’s carbon capture projects YouTube www.youtube.com/shorts/SElTN... Energy, health & climate costs of CCUS & DACCUS web.stanford.edu/group/efmh/j... web.stanford.edu/group/efmh/j...

WindWaterSolar smashes two more records in CA Wed Jun 17: 29.5 GW WWS peak output (previous record 28.3 GW, so record beat by 1.2 GW) 467.92 GWh daily WWS (previous record 433.88 GWh) Gas down 61%, batteries up 337% '26 v '23 143 of 168 (85.1%) days in 2026 with WWS meeting>100% of demand

Another day, another record: 23.148 GW peak of solar on CAISO Mon Jun 15 WWS has met>100% of demand on 141 of 166 (85%) days in 2026 for an avg of 5.1 h/day among all days Gas is down 61%; batteries up 337%; solar up 56%; wind up 13% in '26 vs '23 In-state WWS has met 57.4% of all demand in 2026

Records smashed on CAISO grid Sat Jun 13, 2026 Max battery discharge: 12.498 GW 8:05PM Max solar output: 23.007 GW 11:20AM As of Jun 1, CAISO has 16.531 GW of grid batteries, so can discharge more 139 of 164 (85%) days in '26 with WWS meeting>100% of demand for part of day Gas down 61.2% v '23

During a heat wave, solar steps up with new record to keep the grid stable. Wed June 10, a heat wave increased CAISO demand to its highest in '26. Solar responded with record output 22.82 GW & 245 GWh/d Total WWS also rose to its highest, 434 GWh/d with no fuel mining since solar comes to panel

How fast are batteries being added to electricity grids and at what cost? Battery installations and their costs in U.S. states web.stanford.edu/group/efmh/j... Grids with the lowest U.S. wholesale electricity price www.eia.gov/electricity/... Video www.youtube.com/shorts/OS4xR...

California's grid is so stable, gas output has declined by 62% in '26 v '23 Wind now provides ~same output as gas (~14% of demand) 69 days straight & 135/159 (85%) with WWS>100% of demand for 5.1 h/d among all days WWS has supplied 57% of demand in '26 Batteries up 335%, demand down 0.9% v '23

California has the most stable U.S. grid due to its renewables plus batteries Wholesale prices www.eia.gov/electricity/... TX pays 23% higher ele bills than CA web.stanford.edu/group/efmh/j... More RE-->lower elec prices web.stanford.edu/group/efmh/j... Video www.youtube.com/shorts/Ypj-P...

CAISO has the lowest US wholesale electricity prices thus the most stable US grid despite its huge growth in WindWaterSolar In-state WWS has met 56.8% of demand in '26 Gas down 61.2%, solar up 55%,bat up 334% '26 v '23 67th straight & 133/157 days in 2026 w/WWS100% of demand, for avg of 5.03 h/d

Record solar output on the CAISO grid: 243.3 GWh Thu June 4 65th straight & 131 of 155 (84.5%) days in 2026 with WindWaterSolar meeting>100% of demand for part of the day Fossil gas down 61%, solar up 55%, batteries up 333% in 2026 v 2023. WWS has met 56.6% of demand so far in '26 vs 46.9% in '23

New eye-opening grid-scale battery data for the states with the most batteries in the U.S. Ranking of states/grids that can meet the highest % of average demand with batteries cycling daily: CA (CAISO) 10.6% of demand AZ 7.9% NV 5.7% TX 2.1% web.stanford.edu/group/efmh/j...

Despite ~400,000 new EVs and ~200,000 new heat pumps in California during the past year and the 3rd-most data centers in the U.S., demand has hardly changed since 2025 and decreased 1.3% versus 2023, largely due to the growth in roof PV. Roof PV reduces grid demand for electricity.