Kristina Costa
@slashklc.bsky.social
430 followers 1K following 120 posts
Private citizen, former White House director for Inflation Reduction Act implementation
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slashklc.bsky.social
Another day, another packet of evidence that the energy policy of this administration is a world-historic self-own that will leave the U.S. poorer and less competitive in a rapidly changing global economy.
slashklc.bsky.social
Two more examples for you: Hillary did a 3-day Appalachia tour during the primary, meeting with voters on energy, jobs, health care, substance abuse. Biden had a massive effort to help fossil communities attract investment. Idea that either wrote off large swathes of “red” America is so frustrating.
slashklc.bsky.social
Senate environment Dems have held several such hearings, starting around March of this year IIRC, including on the illegal efforts to freeze competitively awarded, contracted federal funds.
Reposted by Kristina Costa
samillingworth.com
🚗⚡ EVs win everywhere

A new study shows that in every US county, electric vehicles now emit less greenhouse gas than petrol cars, no matter how you drive them.

🔗 pubs.acs.org/doi/10.1021/...

#SciComm #EVs #ClimateAction 🧪
Greenhouse Gas Reductions Driven by Vehicle Electrification across Powertrains, Classes, Locations, and Use Patterns
We assess the cradle-to-grave greenhouse gas (GHG) emissions of current (2025) light-duty vehicles (LDV) across powertrains, vehicle classes, and locations. We create driver archetypes (commuters, occasional long-distance travelers, contractors), simulate different use patterns (drive cycles, utility factors, cargo loads) and characterize GHG emissions using an attributional approach. Driven by grid decarbonization and improved electric vehicle efficiency, we are first to report electric vehicles have lower GHG emissions than gasoline vehicles in every county across the contiguous United States. On average, a 300-mile range battery electric vehicle (BEV) has emissions which are 31–36% lower than a 50-mile range plug-in hybrid electric vehicle (PHEV), 63–65% lower than a hybrid electric vehicle (HEV), and 71–73% lower than an internal combustion engine vehicle (ICEV). Downsizing also reduces emissions, with a compact ICEV having 34% lower emissions than an ICEV pickup. We present the first evaluation of LDV emissions while hauling cargo, showing that carrying 2500 lbs. in a pickup increases BEV emissions by 13% (134 to 152 g CO2e/mile) compared to 22% (486 to 592 g CO2e/mile) for an ICEV. Emissions maps and vehicle powertrain/class matrices highlight the interplay between vehicle classes, powertrains, locations, and use patterns, and provide insights for consumers, manufacturers, and policymakers.
pubs.acs.org
slashklc.bsky.social
Their antipathy appears limited to the technologies that pose a near-term threat to an unnecessary gas expansion. Existing hydro has mostly already been uprated. SMR, conventional nuke, new hydro, marine kinetic energy sources will all take years to develop. Wind, solar, storage — not so much.
justingerdes.bsky.social
This announcement today from DOE affirms something that came up time and again at the POET/UMERC marine energy conference I attended last week. At least so far, Trump's antipathy for renewables has not been directed at hydropower and marine energy: www.energy.gov/eere/article... 🔌💡
Energy Department Celebrates National Hydropower Day, Advancing American Energy Dominance
In celebration of National Hydropower Day, DOE announced several actions that will help unleash American hydropower
www.energy.gov
Reposted by Kristina Costa
enjohnston.bsky.social
Wow: “If you grow an acre of corn, it will produce 900 gallons of ethanol, which will get you about 25,000 miles for a Ford F-150...which is, not bad I guess. But let’s say we put solar on that same acre. It will produce enough electricity every year to drive my Lightning 550,000 miles.”
Forty Acres and a Sense of Hope
Sunshine on a Cloudy Week
substack.com
slashklc.bsky.social
Highlighting synchronous compensators is good; unfortunately Bloomberg is again repeating the fallacy that the precipitating event of the Spain blackout was solar failing. Thermal generators went down first, and then Spain’s grid regs (which can also be revised!) took solar offline as a precaution.
bloomberg.com
The fix for solar power blackouts is already here — so why are so few countries investing in it?

@akshatrathi.bsky.social‬ explains bloom.bg/3V9Ox2L
slashklc.bsky.social
Link to the guidance for those who want to start their weekend with wonkery: aboutblaw.com/bjeL /🧵
aboutblaw.com
slashklc.bsky.social
In short, we've once again got further headwinds for clean energy developers, with smaller and tax-exempt players hurt the most, at a time when electricity prices are rising nationwide and we should be deploying all the solar, wind, and storage we can get. 7/
slashklc.bsky.social
The differentiation between 'commence construction' for wind and solar vs other 48E/45Y technologies (plus 45Q, 45V, and 48D) continues to seem on shaky legal ground to me. Not an APA lawyer, but I'd think there are some pretty clear grounds to argue these changes are arbitrary and capricious. 6/
slashklc.bsky.social
And small private developers don't have the market power to out-compete the big guys to take full advantage of physical work safe harbor. If I'm right, we'll see less deployment, less diversification of clean energy resources, and (as always with this administration) higher costs. 5/
slashklc.bsky.social
I'm particularly concerned about what these changes will do to rural co-ops, Tribes, and smaller developers. Co-ops and other entities were going to blend tax credits with grants. If they get tangled in permitting chaos, they may not be able to begin physical work. Tribes may struggle even more. 4/
slashklc.bsky.social
The guidance eliminates the cost safe harbor (previously 5%) altogether for everything except very small ( < 1.5 MW) solar projects. This is going to create chaos for segments of the market that cannot easily meet the physical work test, raise costs even for those who can, and reduce deployment. 3/
slashklc.bsky.social
It clearly undermines Congressional intent and goes against the text of the GOP bill. The law as actually passed provided a (shorter than optimal) transition period using the longstanding commence construction standard. These changes go against that, and arbitrarily shorten the transition. 2/
slashklc.bsky.social
Earlier today, Bloomberg published what appears to be updated 'commence construction' guidance for wind and solar projects seeking to claim tax credits under the GOP megabill. BLUF: We should take no comfort that it "could have been worse" and there is very little to celebrate. 🧵:
slashklc.bsky.social
Literally lighting taxpayer dollars on fire, in pursuit of ignorance.
virginiagewin.bsky.social
“The destruction of the satellites — which will be abandoned and allowed to eventually burn up in a fiery descent into Earth’s atmosphere — marks the latest step by the Trump administration to scale back federal climate science.”
The perfectly fine, already-paid-for satellites Trump wants to destroy in a fiery atmospheric reentry | CNN
NASA is planning to decommission premier satellite missions that gather information on planet-warming pollution and other climate vital signs beginning as soon as October, sources inside and outside o...
www.cnn.com
Reposted by Kristina Costa
environmentalvoter.bsky.social
"It hasn’t attracted much attention, but a document filed by the Trump administration last week admits to something important: The Trump administration believes that it is going to make gasoline more expensive for Americans." — @robinsonmeyer.bsky.social

heatmap.news/politics/tru...
Donald Trump’s Backdoor Gasoline Tax
Overturning the basis for America’s tailpipe emissions rules could actually raise prices at the pump — according to the Trump administration itself.
heatmap.news
slashklc.bsky.social
~17,000 Tribal homes in the U.S. still do not have electricity, including many in the Southwest. Off-grid solar and storage is by far the most cost-effective way to electrify these homes. Just needlessly, recklessly, pointlessly cruel to deny Tribal families access to power and refrigeration.
karinrives.bsky.social
The Hopi Tribe in Arizona has to tell 650 households that the electricity they were getting through the $7 billion Solar for All program was canceled. "It feels like we stepped back 100 years," Hopi Chairman Tim Nuvangyaoma said of the government's broken promise. tinyurl.com/ym959wcu
slashklc.bsky.social
Sixth IRS commissioner in seven months unwilling to face jail time when directed to share confidential taxpayer data. Never thought I’d say this, but kudos to Billy Long.

Political appointees violating federal law at other agencies should probably take a good look in the mirror.
slashklc.bsky.social
Renewables saving the day during record heat is THE story of the summer.
douglewin.bsky.social
Heat index in Houston is 111. Air conditioning demand is high. Gas & coal plant outages are up sharply. But prices in Texas are the lowest in the country ($20/MWh). Why? Texas' nation leading solar resources are generating >30% of the power needed on peak. #txlege #txenergy
Reposted by Kristina Costa
electricfelix.bsky.social
@ramez.bsky.social:
"Wow. 12 GWs of natural gas plants have unplanned outages in Texas right now, more than twice the amount the grid is supposed to be able to handle. Batteries keeping the lights on as we speak."
slashklc.bsky.social
The “markets should reflect the full cost” people also often conveniently tend to forget that we are not pricing the externalities of fossil production and generation.
slashklc.bsky.social
Yesterday Real World: Boston cast member / acting NASA head Sean Duffy said he wants to build a nuclear plant... on the moon.

Vogtle cost $30B without having to escape Earth's gravity.

Average cost of a resi system that can bring your grandma's power bill to zero = $15-$25k

Make it make sense.
maxinejoselow.bsky.social
Scoop: EPA is preparing to cancel $7 billion in grants intended to help low- and moderate-income families install solar panels www.nytimes.com/2025/08/05/c...
E.P.A. Moves to Cancel $7 Billion in Grants for Solar Energy
www.nytimes.com
slashklc.bsky.social
The remarkable work EPA regulations have achieved over 50 years to improve air quality and public health in the U.S. being steadily undone by climate-fueled wildfire disasters both here and in Canada.
catiehausman.bsky.social
Argument mostly resolved by this super interesting and depressing figure:
doi.org/10.31223/X57...

Clearly we're in a new normal. Open question - do we know yet whether the new normal is more like 2020/21 or more like 2023? I suspect the latter, since Canada is so darn big & it keeps burning. /end
Annual maps of smoke PM2.5 for the lower 48 over 2006-2023. Substantial increases over time in smoke across the US, but the increase is starkest in the Eastern half, and for 2023 the Eastern half is smokier than the Western half.