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.
Reposted by Bob Mayo
A historic turning point for clean heating in Europe: For the first time, in the first half of 2025 sales of heat pumps in Germany have surpassed those of gas boilers.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
November 9, 2025 at 2:36 PM
A historic turning point for clean heating in Europe: For the first time, in the first half of 2025 sales of heat pumps in Germany have surpassed those of gas boilers.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
Reposted by Bob Mayo
📺 BDC’s @aconsidine.bsky.social explains to Capital Tonight’s @sarbetter.bsky.social that NY should not pause implementation of the state’s All Electric Buildings Act, as “decarbonization will be more affordable” than sticking with gas. tinyurl.com/mutzj46e #BuildingDecarb #HeatPump #ClimateSky 🔌💡
The argument for implementing New York's All-Electric Buildings Act
Allison Considine joins Capital Tonight.
tinyurl.com
October 30, 2025 at 6:24 PM
📺 BDC’s @aconsidine.bsky.social explains to Capital Tonight’s @sarbetter.bsky.social that NY should not pause implementation of the state’s All Electric Buildings Act, as “decarbonization will be more affordable” than sticking with gas. tinyurl.com/mutzj46e #BuildingDecarb #HeatPump #ClimateSky 🔌💡
Change one letter, ruin a candy.
Knickers
Knickers
Change one letter, ruin a candy
Goop & Plenty
Goop & Plenty
Change one letter, ruin a candy
Terds
Terds
October 30, 2025 at 2:19 AM
Change one letter, ruin a candy.
Knickers
Knickers
RCP8.5
debate
I miss that climate talk
debate
I miss that climate talk
October 30, 2025 at 1:02 AM
RCP8.5
debate
I miss that climate talk
debate
I miss that climate talk
Reposted by Bob Mayo
📣 A bill on @governor.ny.gov’s desk would end NY’s "100-foot rule," which subsidizes new gas line extensions, reports @publicnewsservice.bsky.social. BDC’s @aconsidine.bsky.social & Kristin George Bagdanov explain that ending the rule will save NY ratepayers ~$200M a year. bit.ly/3Whz2GH 🔌💡
NYS bill would end gas system subsidies
A bill on Gov. Kathy Hochul's desk would end subsidies for gas line extensions.Assembly Bill 8888 would end the
bit.ly
October 21, 2025 at 8:31 PM
📣 A bill on @governor.ny.gov’s desk would end NY’s "100-foot rule," which subsidizes new gas line extensions, reports @publicnewsservice.bsky.social. BDC’s @aconsidine.bsky.social & Kristin George Bagdanov explain that ending the rule will save NY ratepayers ~$200M a year. bit.ly/3Whz2GH 🔌💡
Reposted by Bob Mayo
Time for 2025 updates to my annual “opinions about solar” thread. If you like these, you might like the second edition of my book, Solar Power Finance Without The Jargon. A 30% discount code WSQ0437 is valid on publisher website until end of November 2025.
www.worldscientific.com/worldscibook...
www.worldscientific.com/worldscibook...
Solar Power Finance Without the Jargon
www.worldscientific.com
October 20, 2025 at 7:43 AM
Time for 2025 updates to my annual “opinions about solar” thread. If you like these, you might like the second edition of my book, Solar Power Finance Without The Jargon. A 30% discount code WSQ0437 is valid on publisher website until end of November 2025.
www.worldscientific.com/worldscibook...
www.worldscientific.com/worldscibook...
Hot take: the innumeracy of Americans is largely due to the use of nonsensical units in daily life.
October 19, 2025 at 11:25 PM
Hot take: the innumeracy of Americans is largely due to the use of nonsensical units in daily life.
Reposted by Bob Mayo
OK, here we go...
I'm excited to launch Climate-Colored Goggles, a newsletter about climate and culture. I'll be writing about climate solutions in pop culture, media & sports. America's most influential storytellers need to get in the game.
Sign up here: www.climatecoloredgoggles.com
I'm excited to launch Climate-Colored Goggles, a newsletter about climate and culture. I'll be writing about climate solutions in pop culture, media & sports. America's most influential storytellers need to get in the game.
Sign up here: www.climatecoloredgoggles.com
October 16, 2025 at 6:34 PM
OK, here we go...
I'm excited to launch Climate-Colored Goggles, a newsletter about climate and culture. I'll be writing about climate solutions in pop culture, media & sports. America's most influential storytellers need to get in the game.
Sign up here: www.climatecoloredgoggles.com
I'm excited to launch Climate-Colored Goggles, a newsletter about climate and culture. I'll be writing about climate solutions in pop culture, media & sports. America's most influential storytellers need to get in the game.
Sign up here: www.climatecoloredgoggles.com
“Californians purchased 124,755 zero-emission vehicles (ZEVs) in the third quarter of 2025, representing 29.1% of new car sales, the highest quarterly sales share ever reported in California.”
www.gov.ca.gov/2025/10/13/r...
www.gov.ca.gov/2025/10/13/r...
Record-breaking quarter: California reaches historic high in ZEV sales | Governor of California
www.gov.ca.gov
October 14, 2025 at 8:37 AM
“Californians purchased 124,755 zero-emission vehicles (ZEVs) in the third quarter of 2025, representing 29.1% of new car sales, the highest quarterly sales share ever reported in California.”
www.gov.ca.gov/2025/10/13/r...
www.gov.ca.gov/2025/10/13/r...
Reposted by Bob Mayo
I’m fed up with reading climate related media and posts that cover everything except the cause and solutions. Is it any wonder most people are clueless and falling into despair. C’mon guys, lift your games. If you’re not writing about a fast exit from fossil fuels then you’re part of the problem.
October 14, 2025 at 6:31 AM
I’m fed up with reading climate related media and posts that cover everything except the cause and solutions. Is it any wonder most people are clueless and falling into despair. C’mon guys, lift your games. If you’re not writing about a fast exit from fossil fuels then you’re part of the problem.
Reposted by Bob Mayo
The US will struggle to generate the energy it needs to power growth in its tech industry without including wind and solar, according to JPMorgan.
JPMorgan Says US Risks Missing Energy Goals Without Wind, Solar
The US will struggle to generate the energy it needs to power growth in its tech industry without including wind and solar, according to JPMorgan Chase & Co.’s global head of sustainable solutions.
bloom.bg
October 14, 2025 at 7:00 AM
The US will struggle to generate the energy it needs to power growth in its tech industry without including wind and solar, according to JPMorgan.
“The economic damage of climate change is already much, much worse than DICE predicted, and the economic cost of policy to fix climate change is actually negative.”
Morally broken leaders talk of #Pipelines as #NationBuilding instead of burning but it's a disastrous economic bet as well. #CostOfClimate needs to be demonstrated the and time again. #BigOil will continue to just take the money and run #ClimateChange prospect.org/environment/...
Climate Change Will Bankrupt the Country
Climate-fueled disasters cost America almost a trillion dollars over the last year, far more than economists predicted.
prospect.org
October 13, 2025 at 10:59 PM
“The economic damage of climate change is already much, much worse than DICE predicted, and the economic cost of policy to fix climate change is actually negative.”
Reposted by Bob Mayo
If you haven’t personally experienced a hostile takeover where the new CEO is just there to strip a company for parts and make as much profit for himself and the board as possible before declaring bankruptcy, welcome America.
You’re living it now.
You’re living it now.
October 13, 2025 at 4:09 AM
If you haven’t personally experienced a hostile takeover where the new CEO is just there to strip a company for parts and make as much profit for himself and the board as possible before declaring bankruptcy, welcome America.
You’re living it now.
You’re living it now.
Reposted by Bob Mayo
Mitsubishi debuts 640 kW heat pump providing hot water up to 90 C #energysky -- via pv magazine global:
Mitsubishi debuts 640 kW heat pump providing hot water up to 90 C
The ETI-W heat pump, with a coefficient of performance of up to 4.1, utilizes heat emitted from factory production processes as a heat source to supply hot water at up to 90 C. Debuting on the Japanese market, the system targets industrial and commercial applications.
www.pv-magazine.com
October 12, 2025 at 3:03 AM
Mitsubishi debuts 640 kW heat pump providing hot water up to 90 C #energysky -- via pv magazine global:
Reposted by Bob Mayo
For me (total heat pump nerd), one exciting possibility of cities starting their own sustainable energy utilities is that "city worker comes over and installs a battery" is a tiny hop away from "city worker installs your heat pump," which could make heat pumps so much more affordable.
Today on Volts: last year, the residents of Ann Arbor, MI, voted to create a "sustainable energy utility" that operates alongside the investor-owned utility & supplements it with clean energy. This is, AFAIK, the first arrangement of this kind in the world. I talk with its architect & champion.
Ann Arbor's experiment with a new kind of utility
Missy Stults explains Ann Arbor's novel plan to build a second, clean-energy utility alongside its incumbent.
www.volts.wtf
October 11, 2025 at 10:16 PM
For me (total heat pump nerd), one exciting possibility of cities starting their own sustainable energy utilities is that "city worker comes over and installs a battery" is a tiny hop away from "city worker installs your heat pump," which could make heat pumps so much more affordable.
Reposted by Bob Mayo
10 out of 13 grants awarded for domestic Heat Pump manufacturing (the IRA’s Heat Pump Defense Production Act Program) are also listed. 🔌⚡
Awards for Gradient, Mitsubishi, and York International appear to be safe.
Awards for Gradient, Mitsubishi, and York International appear to be safe.
Some additional info on the new list of axed DOE projects circulating.
- All 7 H2 Hubs
- All 13 IRA grants to convert at-risk auto plants to EV mfg
- 11 of 15 grants to speed domestic clean energy mfg in former coal communities
- 10 of 38 grants for battery materials
heatmap.news/politics/doe...
- All 7 H2 Hubs
- All 13 IRA grants to convert at-risk auto plants to EV mfg
- 11 of 15 grants to speed domestic clean energy mfg in former coal communities
- 10 of 38 grants for battery materials
heatmap.news/politics/doe...
Trump to Axe All 7 Hydrogen Hubs, Bucking Bipartisan Law
A new list of Department of Energy grants slated for termination will hit clean energy and oil majors alike, including Exxon and Chevron.
heatmap.news
October 7, 2025 at 10:53 PM
10 out of 13 grants awarded for domestic Heat Pump manufacturing (the IRA’s Heat Pump Defense Production Act Program) are also listed. 🔌⚡
Awards for Gradient, Mitsubishi, and York International appear to be safe.
Awards for Gradient, Mitsubishi, and York International appear to be safe.
Reposted by Bob Mayo
Two of the most common climate misconceptions I see, even among knowledgeable folks, are that (1) most people aren't worried about climate change, and (2) if they were, they'd act.
Not true! Data show (1) most people are worried, but (2) they won’t act if they don’t know what to do-and most don’t.
Not true! Data show (1) most people are worried, but (2) they won’t act if they don’t know what to do-and most don’t.
October 6, 2025 at 3:24 PM
Two of the most common climate misconceptions I see, even among knowledgeable folks, are that (1) most people aren't worried about climate change, and (2) if they were, they'd act.
Not true! Data show (1) most people are worried, but (2) they won’t act if they don’t know what to do-and most don’t.
Not true! Data show (1) most people are worried, but (2) they won’t act if they don’t know what to do-and most don’t.
Roadmap for Overcoming
Barriers to Using Natural
Refrigerants in the United
States
www.bpa.gov/-/media/Aep/...
Barriers to Using Natural
Refrigerants in the United
States
www.bpa.gov/-/media/Aep/...
www.bpa.gov
October 2, 2025 at 8:09 PM
Roadmap for Overcoming
Barriers to Using Natural
Refrigerants in the United
States
www.bpa.gov/-/media/Aep/...
Barriers to Using Natural
Refrigerants in the United
States
www.bpa.gov/-/media/Aep/...
“As manufacturers develop next generation cooling and heating technologies to meet growing global needs, it is critical to open up the US market to ultra-low GWP refrigerant options for the residential and commercial air conditioning and heat pump sector.”
eia.org/report/enabl...
eia.org/report/enabl...
Enabling Ultra-low GWP Cooling and Heating: Updating U.S. Safety Standards and Codes - EIA
As manufacturers develop next generation cooling and heating technologies to meet growing global needs, it is critical to open up the US market to ultra-low GWP refrigerant options for the residential...
eia.org
October 2, 2025 at 8:08 PM
“As manufacturers develop next generation cooling and heating technologies to meet growing global needs, it is critical to open up the US market to ultra-low GWP refrigerant options for the residential and commercial air conditioning and heat pump sector.”
eia.org/report/enabl...
eia.org/report/enabl...
Reposted by Bob Mayo
The world's first carbon border tax is about to go live, roiling — and possibly reshaping —global trade share.google/yTtxujzkAx8a...
🔌💡
🔌💡
The world's first carbon border tax will soon go live — shaking up global trade
The European Union is poised to fully implement its carbon border tax from Jan. 1.
share.google
October 2, 2025 at 1:39 AM
The world's first carbon border tax is about to go live, roiling — and possibly reshaping —global trade share.google/yTtxujzkAx8a...
🔌💡
🔌💡
Reposted by Bob Mayo
Legacy air-conditioning giant Carrier has a simple solution to ACs stressing the grid: Pair them with a battery that charges up when power demand is low.
Here’s how it’s testing the concept.
Here’s how it’s testing the concept.
Carrier wants to pair batteries with air conditioners to help the grid
Utilities are struggling to meet demand as AI data centers surge. Equipping air conditioners with batteries could be an easy and hugely scalable way to…
www.canarymedia.com
September 29, 2025 at 3:49 PM
Legacy air-conditioning giant Carrier has a simple solution to ACs stressing the grid: Pair them with a battery that charges up when power demand is low.
Here’s how it’s testing the concept.
Here’s how it’s testing the concept.
Reposted by Bob Mayo
This new subdivision in Asheville, North Carolina mandates ground source heat pumps for all of the new homes and besides helping to make the buildings more efficient it makes the neighborhood quieter too since the heat pumps are all indoors!
#EnergySky
#EnergySky
September 29, 2025 at 1:07 PM
This new subdivision in Asheville, North Carolina mandates ground source heat pumps for all of the new homes and besides helping to make the buildings more efficient it makes the neighborhood quieter too since the heat pumps are all indoors!
#EnergySky
#EnergySky
Reposted by Bob Mayo
Reading this press release today. www.canarymedia.com/articles/bat...
Carrier wants to pair batteries with air conditioners to help the grid
Utilities are struggling to meet demand as AI data centers surge. Equipping air conditioners with batteries could be an easy and hugely scalable way to…
www.canarymedia.com
September 29, 2025 at 4:11 PM
Reading this press release today. www.canarymedia.com/articles/bat...
Reposted by Bob Mayo
ok but get a heat pump
my takeaway from climate week nyc is that "climate storytelling" is a little too much "we must reimagine our deepest souls in relationship to mother nature and the moral abyss of the polycrisis into which we must now stare" and not enough "ok but get a heat pump"
September 28, 2025 at 9:14 PM
ok but get a heat pump
Reposted by Bob Mayo
This week on SHIFT KEY: A stack of electricity techs — solar, batteries, EVs etc. — seem to be displacing fossil fuels across China & the developing world. Is this the start of the "Electrotech Revolution"? Rob & I discuss the evidence with @kingsmillbond.bsky.social heatmap.news/podcast/shif... 🔌💡
September 25, 2025 at 12:16 PM
This week on SHIFT KEY: A stack of electricity techs — solar, batteries, EVs etc. — seem to be displacing fossil fuels across China & the developing world. Is this the start of the "Electrotech Revolution"? Rob & I discuss the evidence with @kingsmillbond.bsky.social heatmap.news/podcast/shif... 🔌💡