Paul Wennberg
@paulowennberg.bsky.social
Celebrating Richard Flagan's 50 years of service to @caltech.edu! Rick arrived in 1975 intending to study combustion chemistry and ended up playing an enormously influential role in developing new instrumentation to quantify atmospheric aerosol and helping to mitigate air pollution in LA and beyond.
September 19, 2025 at 9:54 PM
Celebrating Richard Flagan's 50 years of service to @caltech.edu! Rick arrived in 1975 intending to study combustion chemistry and ended up playing an enormously influential role in developing new instrumentation to quantify atmospheric aerosol and helping to mitigate air pollution in LA and beyond.
Batteries and solar friendly sparing on a stormy September day on CAISO. Gas and imports get to chill.
September 19, 2025 at 2:53 PM
Batteries and solar friendly sparing on a stormy September day on CAISO. Gas and imports get to chill.
Indeed. Remarkable how quickly batteries went from irrelevant to a major component of the California grid. Has also enabled renewed growth in solar which had tapped out at ~100% of noontime supply.
September 10, 2025 at 2:29 PM
Indeed. Remarkable how quickly batteries went from irrelevant to a major component of the California grid. Has also enabled renewed growth in solar which had tapped out at ~100% of noontime supply.
One year later …
September 7, 2025 at 7:10 PM
One year later …
I wonder how much money would have been saved on Merced to Bakersfield with these designs. The vertical and width clearance changes alone must substantially alter the design. Knocking 11 ft off vertical clearance! Here’s the nearly 3000 foot long overpass at Ave 9 north of Fresno.
August 23, 2025 at 9:01 PM
I wonder how much money would have been saved on Merced to Bakersfield with these designs. The vertical and width clearance changes alone must substantially alter the design. Knocking 11 ft off vertical clearance! Here’s the nearly 3000 foot long overpass at Ave 9 north of Fresno.
Our good weather luck has run out.
August 21, 2025 at 1:15 AM
Our good weather luck has run out.
Meanwhile in California, CAISO is exporting 3GW of excess (mostly) solar.
July 27, 2025 at 7:00 PM
Meanwhile in California, CAISO is exporting 3GW of excess (mostly) solar.
Congratulations @jannawennberg.bsky.social !
June 15, 2025 at 11:28 PM
Congratulations @jannawennberg.bsky.social !
Approaching 10GW of discharge to CAISO in the evening
June 13, 2025 at 3:02 PM
Approaching 10GW of discharge to CAISO in the evening
A revolution happening. revolution-wind.com/benefits-to-...
June 10, 2025 at 12:53 PM
A revolution happening. revolution-wind.com/benefits-to-...
Congratulations @haroula-baliaka.bsky.social An agent of change for sure! ccid.caltech.edu/events/signa...
May 23, 2025 at 3:49 AM
Congratulations @haroula-baliaka.bsky.social An agent of change for sure! ccid.caltech.edu/events/signa...
Remarkable how batteries are transforming CAISO. If deployment quadrupled (challenging now with the tariffs), non-co2 emitting sources (solar + hydro + nuclear + wind + geothermal) could provide nearly 24 hours of carbon free electricity.
May 8, 2025 at 5:10 PM
Remarkable how batteries are transforming CAISO. If deployment quadrupled (challenging now with the tariffs), non-co2 emitting sources (solar + hydro + nuclear + wind + geothermal) could provide nearly 24 hours of carbon free electricity.
These batteries provided 6GW of power after sunset yesterday on CAISO - 6 nuclear reactors worth! Five years ago we had almost none of this highly dispatchable source.
April 3, 2025 at 5:57 PM
These batteries provided 6GW of power after sunset yesterday on CAISO - 6 nuclear reactors worth! Five years ago we had almost none of this highly dispatchable source.
Charge your EV on a spring Sunday in CAISO without OpEx co2 emissions.
March 27, 2025 at 7:50 AM
Charge your EV on a spring Sunday in CAISO without OpEx co2 emissions.
Who’s going to give them the bad news?
March 17, 2025 at 8:15 PM
Who’s going to give them the bad news?
Batteries are so dispachable
March 17, 2025 at 3:13 PM
Batteries are so dispachable
Supply is 95% co2 free (opex).
March 7, 2025 at 9:15 PM
Supply is 95% co2 free (opex).
@pbump.com points out that Nickels are more expensive to mint than pennies. So, and as I said earlier, ... just kill the least significant digit (eliminate the penny, nickel, and quarter) and mint a lot more (but physically smaller) 50c pieces. wapo.st/3WQW08n
February 10, 2025 at 9:46 PM
@pbump.com points out that Nickels are more expensive to mint than pennies. So, and as I said earlier, ... just kill the least significant digit (eliminate the penny, nickel, and quarter) and mint a lot more (but physically smaller) 50c pieces. wapo.st/3WQW08n
And some snow too.
January 26, 2025 at 6:40 PM
And some snow too.
In spite of the Moss Landing fire, deployment of utility scale batteries in CAISO is continuing to accelerate. These facilities are greatly reducing the required gas-powered ramps just before and after sunrise.
January 21, 2025 at 4:40 PM
In spite of the Moss Landing fire, deployment of utility scale batteries in CAISO is continuing to accelerate. These facilities are greatly reducing the required gas-powered ramps just before and after sunrise.
Leaf blowing ash all over the place. And gas powered leaf blowers aren’t even legal in Pasadena.
January 21, 2025 at 4:25 PM
Leaf blowing ash all over the place. And gas powered leaf blowers aren’t even legal in Pasadena.
Do you remember when people asked you a stupid question and your replied “LMGTFY” as in let me google that for you? We are going backwards. Try this question: "Does water freeze at 27 degrees?" Answer:
January 17, 2025 at 10:47 PM
Do you remember when people asked you a stupid question and your replied “LMGTFY” as in let me google that for you? We are going backwards. Try this question: "Does water freeze at 27 degrees?" Answer: