Bob Mayo
@bobmayo.com
Building Electrification Advocate. Climate-tech curious. Engineering and research at the intersection of hardware and software. Enjoyer of well-designed interfaces between subsystems.
Why have I not seen any DE-ICE MINNESOTA signs or bumper stickers?
January 22, 2026 at 5:45 AM
Why have I not seen any DE-ICE MINNESOTA signs or bumper stickers?
Reposted by Bob Mayo
Hey architects and builders:
HALF of the U.S. 2.4% emissions *increase* in 2025 was due to an expansion of the use of fossil fuels for space heating. Just say no to gas systems in your projects. The future of the planet is literally in your hands.
HALF of the U.S. 2.4% emissions *increase* in 2025 was due to an expansion of the use of fossil fuels for space heating. Just say no to gas systems in your projects. The future of the planet is literally in your hands.
Why America’s Climate Emissions Surged in 2025
Podcast Episode · Shift Key with Robinson Meyer and Jesse Jenkins · 01/21/2026 · 41m
podcasts.apple.com
January 21, 2026 at 8:28 PM
Hey architects and builders:
HALF of the U.S. 2.4% emissions *increase* in 2025 was due to an expansion of the use of fossil fuels for space heating. Just say no to gas systems in your projects. The future of the planet is literally in your hands.
HALF of the U.S. 2.4% emissions *increase* in 2025 was due to an expansion of the use of fossil fuels for space heating. Just say no to gas systems in your projects. The future of the planet is literally in your hands.
Reposted by Bob Mayo
Proud to announce in Davos at the World Economic Forum that California has surpassed 2.5M ZEV sales.
While Washington now cedes the global clean vehicle market to China, California is ensuring American workers and manufacturers can excel in the industries that will define this century.
While Washington now cedes the global clean vehicle market to China, California is ensuring American workers and manufacturers can excel in the industries that will define this century.
January 20, 2026 at 7:50 PM
Proud to announce in Davos at the World Economic Forum that California has surpassed 2.5M ZEV sales.
While Washington now cedes the global clean vehicle market to China, California is ensuring American workers and manufacturers can excel in the industries that will define this century.
While Washington now cedes the global clean vehicle market to China, California is ensuring American workers and manufacturers can excel in the industries that will define this century.
Reposted by Bob Mayo
Despite everything, we are planning for and building a better world.
There's a new toolkit out to help people move forward shutting down the (explosive) gas system in their neighborhoods from @sonalj.bsky.social, a fellow @cplusc.bsky.social Fellow.
climateandcommunity.org/research/nei...
There's a new toolkit out to help people move forward shutting down the (explosive) gas system in their neighborhoods from @sonalj.bsky.social, a fellow @cplusc.bsky.social Fellow.
climateandcommunity.org/research/nei...
Neighborhood-Scale Building Decarbonization
A Toolkit for Advocates and Implementers
climateandcommunity.org
January 20, 2026 at 10:53 PM
Despite everything, we are planning for and building a better world.
There's a new toolkit out to help people move forward shutting down the (explosive) gas system in their neighborhoods from @sonalj.bsky.social, a fellow @cplusc.bsky.social Fellow.
climateandcommunity.org/research/nei...
There's a new toolkit out to help people move forward shutting down the (explosive) gas system in their neighborhoods from @sonalj.bsky.social, a fellow @cplusc.bsky.social Fellow.
climateandcommunity.org/research/nei...
Cities should make some roads EV-only.
January 20, 2026 at 11:20 PM
Cities should make some roads EV-only.
Reposted by Bob Mayo
Super important from @ryanlcooper.com
How Trump Doomed the American Auto Industry prospect.org/2026/01/20/h...
How Trump Doomed the American Auto Industry prospect.org/2026/01/20/h...
How Trump Doomed the American Auto Industry - The American Prospect
Ford and GM made a big bet on electrification. Then Trump plunged a knife into their backs.
prospect.org
January 20, 2026 at 8:49 PM
Super important from @ryanlcooper.com
How Trump Doomed the American Auto Industry prospect.org/2026/01/20/h...
How Trump Doomed the American Auto Industry prospect.org/2026/01/20/h...
Reposted by Bob Mayo
Profits go down: We regret to announce that we have to destroy the world.
Profits go up: We're delighted to announce that we have to destroy the world.
Profits go up: We're delighted to announce that we have to destroy the world.
January 19, 2026 at 5:45 PM
Profits go down: We regret to announce that we have to destroy the world.
Profits go up: We're delighted to announce that we have to destroy the world.
Profits go up: We're delighted to announce that we have to destroy the world.
Reposted by Bob Mayo
IMHO, you would enjoy listening to this pod about a guy who is trying to decentralize the electricity grid the same way telecom & internet infrastructure were decentralized.
Making the electricity grid work like the internet
Jonas Birgersson joins me to explain how "packet-switching" for electrons can lead to energy abundance and grid resilience.
www.volts.wtf
January 18, 2026 at 7:59 PM
IMHO, you would enjoy listening to this pod about a guy who is trying to decentralize the electricity grid the same way telecom & internet infrastructure were decentralized.
Reposted by Bob Mayo
Reposted by Bob Mayo
The Trump administration is suing two Bay Area cities for banning gas hookups in new homes, even though they haven't actually enforced the bans in years: www.latimes.com/environment/... via @hayleysmith.bsky.social
Trump administration sues two California cities over natural gas bans
The Justice Department said natural gas bans in Petaluma and Morgan Hill drive up costs and conflict with federal policy. Both cities said they have not enforced their bans in several years.
www.latimes.com
January 15, 2026 at 4:15 AM
The Trump administration is suing two Bay Area cities for banning gas hookups in new homes, even though they haven't actually enforced the bans in years: www.latimes.com/environment/... via @hayleysmith.bsky.social
Reposted by Bob Mayo
“Wikipedia represents something unprecedented: the only major platform on which truth emerges through transparent debate, rather than algorithmic opacity or corporate interests. Every edit is logged, every discussion archived”
Use the Wikipedia app.
🧪 #Knowledge
www.nature.com/articles/d41...
Use the Wikipedia app.
🧪 #Knowledge
www.nature.com/articles/d41...
January 15, 2026 at 3:09 AM
“Wikipedia represents something unprecedented: the only major platform on which truth emerges through transparent debate, rather than algorithmic opacity or corporate interests. Every edit is logged, every discussion archived”
Use the Wikipedia app.
🧪 #Knowledge
www.nature.com/articles/d41...
Use the Wikipedia app.
🧪 #Knowledge
www.nature.com/articles/d41...
I wonder if Apple would block the ICE Watch app from the App Store if it was an official app published by the State of Minnesota and it only covered Minnesota. Or Oregon.
www.cbsnews.com/news/apple-r...
www.cbsnews.com/news/apple-r...
Apple removes app that tracks ICE agents from its App Store, developer says
The developer of the ICEBlock app said the software has been removed from Apple's App Store due to "objectionable content."
www.cbsnews.com
January 9, 2026 at 5:06 AM
I wonder if Apple would block the ICE Watch app from the App Store if it was an official app published by the State of Minnesota and it only covered Minnesota. Or Oregon.
www.cbsnews.com/news/apple-r...
www.cbsnews.com/news/apple-r...
Reposted by Bob Mayo
The Trump administration has sued two California over bans on gas hookups in new buildings: www.mercurynews.com/2026/01/05/t...
Trump administration sues Morgan Hill, Petaluma over natural gas bans
At the center of the case is whether cities can require new buildings to go all-electric when federal law governs how gas appliances are regulated — a question the government says must be answered …
www.mercurynews.com
January 7, 2026 at 4:04 AM
The Trump administration has sued two California over bans on gas hookups in new buildings: www.mercurynews.com/2026/01/05/t...
Reposted by Bob Mayo
Unhook ourselves from oil and gas and we unhook ourselves from dependency on dictators, autocrats and expansionist regimes all over the planet.
Renewables and other low-carbon energy sources are not just good climate sense. They are also good political sense.
Renewables and other low-carbon energy sources are not just good climate sense. They are also good political sense.
January 6, 2026 at 5:04 PM
Unhook ourselves from oil and gas and we unhook ourselves from dependency on dictators, autocrats and expansionist regimes all over the planet.
Renewables and other low-carbon energy sources are not just good climate sense. They are also good political sense.
Renewables and other low-carbon energy sources are not just good climate sense. They are also good political sense.
Reposted by Bob Mayo
It sounds like the Bay Area Air
Quality Managment District is on track to end the installation of new fossil fuel burning residential hot water and space heating systems in 2027 and 2029 respectively.
www.paloaltoonline.com/blogs/a-new-...
Quality Managment District is on track to end the installation of new fossil fuel burning residential hot water and space heating systems in 2027 and 2029 respectively.
www.paloaltoonline.com/blogs/a-new-...
Blog: Electric Water Heaters Will Soon Be The New Normal
Electric water heaters will soon be the standard replacement for Bay Area residences. But there will be some exceptions.
www.paloaltoonline.com
December 31, 2025 at 11:29 PM
It sounds like the Bay Area Air
Quality Managment District is on track to end the installation of new fossil fuel burning residential hot water and space heating systems in 2027 and 2029 respectively.
www.paloaltoonline.com/blogs/a-new-...
Quality Managment District is on track to end the installation of new fossil fuel burning residential hot water and space heating systems in 2027 and 2029 respectively.
www.paloaltoonline.com/blogs/a-new-...
Reposted by Bob Mayo
New paper! Heat-pump water heaters could cut energy costs and pollution, but installs often require 💰 electrical work to accommodate backup resistance heat. My student Levi Premer developed prediction and control software to eliminate the need for backup heat and ⬆️ efficiency and flexibility. 🧵1/
November 4, 2025 at 4:28 PM
New paper! Heat-pump water heaters could cut energy costs and pollution, but installs often require 💰 electrical work to accommodate backup resistance heat. My student Levi Premer developed prediction and control software to eliminate the need for backup heat and ⬆️ efficiency and flexibility. 🧵1/
Reposted by Bob Mayo
China uses green tech dominance to take early lead in clean fuels race. #Envision one of the largest #windturbine manufacturers is using #windenergy to produce green #ammonia, selling it for use in fertilisers and chemicals and as a fuel for #shipping www.ft.com/content/7728... via @FT #ActOnClimate
China uses green tech dominance to take early lead in clean fuels race
Companies use wind and solar energy to produce green ammonia and methanol
www.ft.com
December 29, 2025 at 10:04 AM
China uses green tech dominance to take early lead in clean fuels race. #Envision one of the largest #windturbine manufacturers is using #windenergy to produce green #ammonia, selling it for use in fertilisers and chemicals and as a fuel for #shipping www.ft.com/content/7728... via @FT #ActOnClimate
Reposted by Bob Mayo
I'm curious how it's going with SolarApp+, in terms of time and cost. The App improves the process, but I think we can do better.
It's also a problem with electrification of appliances, so I'm proposing some reforms of the permit process for heat pumps as well.
It's also a problem with electrification of appliances, so I'm proposing some reforms of the permit process for heat pumps as well.
December 28, 2025 at 2:17 AM
I'm curious how it's going with SolarApp+, in terms of time and cost. The App improves the process, but I think we can do better.
It's also a problem with electrification of appliances, so I'm proposing some reforms of the permit process for heat pumps as well.
It's also a problem with electrification of appliances, so I'm proposing some reforms of the permit process for heat pumps as well.
Reposted by Bob Mayo
Listening to Saul on Volts comparing AUS vs US rooftop solar was painfully familiar. In AUS he got 5 quotes in 2 days + permit/interconnect in ~24h; here we’re DIY’ing our roof (with help from Bluesky friends like @commercialsolarguy.com) and permit review loop is the biggest bottleneck
Today on Volts: you've probably heard that Australia has cheap rooftop solar power. You've probably also heard some rumors & myths about it. (Is it destabilizing the grid?) I called my favorite Australian energy expert to clear it all up. This is a fun one!
www.volts.wtf/p/whats-the-...
www.volts.wtf/p/whats-the-...
What's the real story with Australian rooftop solar?
Saul Griffith joins me to debunk the myths surrounding Australia's massive influx of solar energy.
www.volts.wtf
December 27, 2025 at 6:35 PM
Listening to Saul on Volts comparing AUS vs US rooftop solar was painfully familiar. In AUS he got 5 quotes in 2 days + permit/interconnect in ~24h; here we’re DIY’ing our roof (with help from Bluesky friends like @commercialsolarguy.com) and permit review loop is the biggest bottleneck
I do not find the word 'climate' in this story.
www.bloomberg.com/features/202...
www.bloomberg.com/features/202...
Gen-Z Revolts Against ‘Dystopian Future’ as Protests Sweep the Globe
Mass movements have ousted leaders and disrupted governments worldwide. Bloomberg Economics examines what countries may face unrest in 2026
www.bloomberg.com
December 27, 2025 at 5:39 PM
I do not find the word 'climate' in this story.
www.bloomberg.com/features/202...
www.bloomberg.com/features/202...
Reposted by Bob Mayo
Today on Volts: you've probably heard that Australia has cheap rooftop solar power. You've probably also heard some rumors & myths about it. (Is it destabilizing the grid?) I called my favorite Australian energy expert to clear it all up. This is a fun one!
www.volts.wtf/p/whats-the-...
www.volts.wtf/p/whats-the-...
What's the real story with Australian rooftop solar?
Saul Griffith joins me to debunk the myths surrounding Australia's massive influx of solar energy.
www.volts.wtf
December 26, 2025 at 6:56 PM
Today on Volts: you've probably heard that Australia has cheap rooftop solar power. You've probably also heard some rumors & myths about it. (Is it destabilizing the grid?) I called my favorite Australian energy expert to clear it all up. This is a fun one!
www.volts.wtf/p/whats-the-...
www.volts.wtf/p/whats-the-...
So now we have to worry about tornados in the Bay Area. Is there something about our topography that means we get more tornadoes due to climate change? I wonder how bad it will get. Basements are rare here, and tornado shelters are nonexistent.
December 27, 2025 at 6:05 AM
So now we have to worry about tornados in the Bay Area. Is there something about our topography that means we get more tornadoes due to climate change? I wonder how bad it will get. Basements are rare here, and tornado shelters are nonexistent.
Reposted by Bob Mayo
At The Big Green Machine, my @wellesley.edu students and I are tracking more than 600 clean energy manufacturing projects in North America.
Check out our interactive dashboard and access our full dataset. Let us know what is missing, wrong, or needs updating. 🔌💡
www.the-big-green-machine.com
Check out our interactive dashboard and access our full dataset. Let us know what is missing, wrong, or needs updating. 🔌💡
www.the-big-green-machine.com
December 23, 2025 at 6:06 PM
At The Big Green Machine, my @wellesley.edu students and I are tracking more than 600 clean energy manufacturing projects in North America.
Check out our interactive dashboard and access our full dataset. Let us know what is missing, wrong, or needs updating. 🔌💡
www.the-big-green-machine.com
Check out our interactive dashboard and access our full dataset. Let us know what is missing, wrong, or needs updating. 🔌💡
www.the-big-green-machine.com
Reposted by Bob Mayo
45. Specifically, we've decoupled economic growth from fossil energy consumption. Coal demand has collapsed. Oil use is flat. Natural gas use is growing but < GDP, even as standards of living have gone up. That's happened because of higher efficiency and decarbonization.
December 20, 2025 at 5:29 PM
45. Specifically, we've decoupled economic growth from fossil energy consumption. Coal demand has collapsed. Oil use is flat. Natural gas use is growing but < GDP, even as standards of living have gone up. That's happened because of higher efficiency and decarbonization.