Support decarbonization, zero-CO2 generation & competitive markets. Former Commissioner of PA PUC, Secretary of PA DEP, Secretary of Policy & Public Advocate for consumers of Philadelphia's municipal utilities. Law degree.
2,397 followers 1,095 following 1,399 posts
view profile on Bluesky
On this Labor Day, thank you to US solar & wind workers, who are being attacked by the Department of Energy, Department of Interior, Department of Transportation & POTUS. "Trump said that his administration would not approve any wind or solar projects." newrepublic.com/article/1997... #energysky
Lying by conservative media and petrostate politicos is an epidemic. The energy transition facts scare them.
True, but not a national economy.
True.
Good question. Some explanations offered include higher customer acquisition costs, higher permitting costs, including local governments and utility bureaucracies, higher labor costs and higher profit margins.
I don't know. I would guess that they are not. We know fugitive methane emissions are significant. The range on their size is pretty big too.
True. Risky investment.
Gas is losing global electricity generation market share! Why? Nations understand that gas price is volatile & can skyrocket to punishing levels, so they seek substitutes. Solar gains global generation market share. Petrostate politicos freak out! Credit @cleanpowerdave.bsky.social #energysky
Interesting. Solar and nuclear are up the most in generation share in Japan since 2018.
Good morning with good news: Japan, world's 4th largest economy, cut its fossil fuel generated electricity from 73.1% in June 2018 to 54.8% in June 2025. That's 18.3 points drop or 2.6 points/year! It could be near zero FF by 2045. Gas fell from 38.1% to 27.4% Coal fell from 30% to 20% #energysky
Fair.
Escalating electricity bills are a big incentive to install solar. Now, can US distributed solar cut its costs to the levels in Europe or Australia? If it can, the economics of installing distributed solar in US will remain attractive, even without federal tax credits.
China is building more new nuclear units than any nation. It has about half of the world's nuclear units that are currently under construction. Its nuclear generation is barely keeping up with electricity growth. If any nation can reduce new nuclear costs, it is China. So far, not encouraging.
True.
Peaker gas plants cannot operate due to scheduled maintenance and forced outages 23-46 days per year. Combined cycle gas plants cannot operate for 21-38 days. Gas plants breakdown more frequently during system peaks aka when they're really needed. No plant operates 24/7/365! #energysky
Yes, it does.
Fair point
Good morning with good news: Solar repays its upfront CO2 debt from manufacturing in 4 months and 57 times over its life! Solar is 19x cleaner than coal per kWh. Solar is 8x cleaner than gas per kWh. Gas is dirty, not "clean!" #energysky interactive.carbonbrief.org/factcheck/so...
Mainly because global peak oil and coal demand are near but not quite reached.
They can. And that is good.
Wind also charges batteries. Wind plus battery projects are already being built. Wind and solar often complement each other. Batteries complement both.
Their costs are plunging. Will they increase overall electricity costs? Could solar/wind plus battery be cheaper than gas or coal? Yes, they could be. We will see. Now, if the pollution costs of burning gas and coal are included in their cost of electricity, as they should be, they cost much more.
I do too. New nuclear is very expensive. It will have to slash its costs, or it will basically do well to grow at just the rate of electricity demand growth.
True.
Read the IEA report, which you have not, but that does not stop you spouting nonsense from your cowardly, anonymous account. Also see my responses to your nonsense. www.iea.org/reports/oil-...
Mostly true.
We will see, but batteries are a game changer. Battery costs are plunging, and their deployment are skyrocketing.
Fair points.
Before spouting nonsense from your anonymous, cowardly social media account, you really should read the IEA report. I have read it, and you have not. Here it is again: www.iea.org/reports/oil-...
LOL! First, this chart is from IEA. But I have read the IEA Report, and you have not. Second, once growth goes to zero, oil demand peaks. Third, once growth goes negative, demand falls. Another anonymous idiot: videoguy.bsky.social A coward too.
See also www.carbonbrief.org/analysis-sol...
False. Please read IEA www.iea.org/reports/worl... Moreover, IEA has consistently underestimated solar and wind growth.
Possibly low. True.
IEA says: 1. China's oil demand peaks in 2027 due to EVs. 2. Global demand for combustible petroleum fuels FALLS by 2028. 3. Global oil demand, including for petrochemical feedstocks, peaks and begins to fall by 2030. See IEA Oil 2025 Analysis & Forecast iea.li/40auS5I Petrostate politicos freak!
True.
Ooops...solar will be the largest global source of electricity by 2030, not energy. #energysky
Good morning with good news: Solar will be the largest global source of energy by 2033 & wind will be second largest by ~2035! Global solar generation will quadruple from 2023-2030! Why are petrostate politicos freaking out? See below & EVs #energysky interactive.carbonbrief.org/factcheck/so...
NJ Adds 3 GW of Community Solar! New law "Directs the Board of Public Utilities (BPU) to open registration for an additional 3,000 MW of new community solar capacity by Oct. 1, 2025." Blue states push back, as petrostate politicos attack solar & wind. pv-magazine-usa.com/2025/08/28/n... #energysky
Good morning with good news: US solar surged 31% to monthly record high of 43.7 TWh in July 2025, up from 32.9 TWh in July 2024. Solar rose 10x from July 2015 (4.11 TWh) to July 2025. Solar was a record high 11% of US electricity in May 2025 & 9.47% this July. It was 1.2% in July 2015. #energysky
This is good on so many levels. I can only imagine the endless laughter at the Tesla truck design. "Have you seen his truck?!"
True. But he has failed abysmally to meet the challenge.
"In 2011, Musk dismissed BYD by laughing at their products... “Have you seen their car?” BYD had last word. It "has been at the forefront of China’s aggressive EV push, rapidly expanding its domestic market and overtaking Tesla as the world’s largest EV manufacturer by revenue in 2024." #energysky
"The speed and scale of China’s electric vehicle revolution has caught the world by surprise, and analysts say this trend shows no sign of slowing down." Musk was among those who underestimated China’s EV manufacturers. In 2011, Musk dismissed BYD... www.cnbc.com/2025/08/28/a... #energysky
@thebti.bsky.social @tednordhaus.bsky.social say climate change is real but downplay climate change risks & attack "climate hawks." They're "climate appeasers," who thrill climate deniers by minimizing risks & attacking solar/wind. This study reminds that uncertainty & big climate risks are real!
Study finds collapse of critical Atlantic current has 25% probability in low emissions; 37% if medium emissions; 70% in high emissions. Awkward data for @thebti.bsky.social theguardian.com/environment/2025/aug/28/collapse-critical-atlantic-current-amoc-no-longer-low-likelihood-study #energysky
Musk Did That! Tesla European July 2025 sales plunge 40%, comparrd to July 2024! BYD surges 225%! BYD July European sales 13,503. Tesla sales 8,837. BYD wins. The fight is over. #energysky www.cnbc.com/2025/08/28/t...
Ørsted will certainly win on the merits. But the stop work order will waste time, pour money down a pit of legal fees, destroy the lives of the workers dedicated to completing the remaining 20% of the project, keep Ørsted from bidding on future U.S. wind projects, and delay access to energy.
Wind and solar generated a monthly record high percentage of 26.3% of China's electricity in April 2025. They generated 25.7% in May 2025. W&S gained a big 4.3 points of market share from July 2024 to July 2025. W&S will soon generate 30% plus of China's electricity in multiple months. #energysky
Good morning with good news: China's wind & solar surged 1536% or ~16X to 211 TWh in July 2025 from 12.9 TWh in July 2015. One Decade! W&S provided 20.9% of China's electricity in July 2025, up from 16.6% in July 2024 and 2.4% in July 2015. W&S jumped 35% from July 2024 to July 2025! #energysky
These are some of the workers, whose jobs are endangered, by the Petrostate politicos attack on the 704 MW Revolution Wind, an offshore wind project near Rhode Island. Trump Administration ordered work to stop on the 80% complete project. Why? Offshore wind reduces gas generation! #energysky
Probably in solar. Definitely in battery storage, but BNEF does not include battery storage in RE investment totals.
Global investment reached $386 billion in H1 2025, approximately tripling since 2015! Global investment in RE rising 10%, despite a 36% drop in US RE investment, is remarkable. Petrostate politicos are slowing US RE investment but RE is winning globally! #energysky
Good morning with good news: "Global investment in new renewable energy projects hit a record $386 billion in the first half of 2025, up 10%" from 2024. Big rises in small solar & offshore wind boosted global investment 10%, even as US investment fell! about.bnef.com/insights/cle... #energysky
Right wingers, who profess concern about energy poverty & attack solar, play a duplicitous game. Those doing so include Alex Epstein, petrostate politicos & @thebti.bsky.social Solar cuts diesel & oil imports, hurting poor countries. It brings electricity to places with little! #energysky.
"Solar panel imports will reduce fuel imports. The savings from avoiding diesel can repay the cost of a solar panel within six months in Nigeria, and even less in other countries." Fossil fuels are crushing costs for poor nations. Solar is cheap! #energysky ember-energy.org/app/uploads/...
Good morning with good news: Africa's solar imports surge 60% to 15 GW in the 12 months ending June 2025. It will raise Sierra Leone's electricity supply by 61% & by at least 5% in 16 nations! Solar changes nations in 12 months, reducing energy poverty! #energysky ember-energy.org/latest-insig...
Petrostate politicos are at war against wind & solar. The attacks are so extreme that they raise many legal & even constitutional questions, such as equal protection, due process, and even the right to travel. Why the desperation to block solar & wind? They & batteries are 93% of new generation!
Trump Administration is pursuing petrostate energy policies, but more renewable capacity (~40 GW) will be added from June 2025-May 2026 than was added (~35 GW) from June 2024-May 2025. www.eia.gov/electricity/... #energysky
Utility-scale solar added 31,172 MW in the 12 months ending in May 2025 and will add 33,431 MW from June 2025-May 2026 All RE added 35,167 MW in the 12 months ending in May 2025 and will add 40,407 MW from June 2025-May 2026. Battery storage will add 19,712 MW from June 2025-May 2026.
Good morning with good news: US will add a record 64.1 GW of generation capacity in 2025 & 93% of it will be solar, wind & batteries! As RE grows, fossil fuel capacity falls. It fell 3.8 GW in 12 months thru May 2025 & will fall 2.6 GW in June 2025-May 2026. www.eia.gov/electricity/... #energysky
Trump is raising electricity prices by his attacks on solar and wind plus his tariffs Solar executives are right to speak up with the truth and facts. Petrostate policies of the Trump administration create more expensive and more dirty power. #energysky www.cnbc.com/2025/08/24/s...
Global wind and solar surged 2.77 points from 15.58% to 18.35% in the 12 months from June 2024-June 2025. They were 8.14% of global electricity in June 2019. They will probably generate more than 20% of global electricity in 2026 and about 30% by 2030! Huge, rapid transition. #energysky
Fossil fuels falling below 50% of global electricity will be an historic milestone. It will be achieved probably by 2028. Wind and solar gained 2.87 points of global generation share from June 2024 to June 2025! They reached 18.45% of global generation in June 2025 & 19.86% in April. #energysky
Good morning with good news: Fossil fuels fell from 57.23% in June 2024 to 55.45% in June 2025 of global electricity. That 1.78-point fall in 12 months was ~50% more than average yearly fall of 1.15 points since 2019. FF may drop to ~46% by June 2030! Why? Surging wind & solar! #energysky
Petrostate Attack on Wind "Trump administration on Friday ordered that all construction stop on Revolution Wind, a $4 billion wind farm off the coast of Rhode Island that is already mostly built." Petrostate attacks on solar & wind raise electricity prices! Less Power Rising Demand Higher Prices
Good morning with good news: Solar generated 33.6% of Greece's electricity this July. It increased 31%, compared to July 2024, and quadrupled since July 2020! Solar & wind provided 48.7% in July! July Solar Share: 2025: 33.6% 2024: 24.6% 2023: 23.4% 2022: 13.4% 2021: 11% 2020: 11.9% #energysky
Horrendous!
False.
FERC data show coal and oil declining by 24.9 GW and 1.9 GW respectively from June 2025-May 2028. Gas grows ~ 6 GW Hydro adds 596 MW Geothermal adds 92 MW Biomass drops 123 MW FERC has zero growth in nuclear capacity, but nuclear restarts in PA & MI plus uprates are possible by 2028. #energysky
Good morning with good news: Solar was 75.3% and wind 15.6% for a combined 91% of new utility-scale generation added in US from Jan-May 2025! “High probability” additions of large solar (89.5 GW) and wind (23 GW) total 113 GW from June 2025 to May 2028. electrek.co/2025/08/21/f... #energysky
One of the most remarkable and impactful transformations of all human technology and civilization in history is happening right now!
China's July 2025 solar production was ~50% higher than its July 2024 solar output! China's solar generated 839 TWh in 2024 and will likely exceed 1,200 TWh in 2025. China's solar will generate in 2025 an amount of electricity equal to about 27% of USA's electricity demand. #energysky
President Trump and some petrostate politicos say to bolster their attacks on wind and solar that China is not deploying wind and solar. False! China will build in 2025 huge and record high amounts of both wind and solar! W&S are globally about 90% of new generation in 2025! #energysky.
Good morning with good news: China's CO2 emissions from its power sectir fell 3% in January to June 2025, compared to same period in 2024! Why? Huge amounts of new solar, wind & batteries. China will build more solar in 2025 than the US has ever built! www.reuters.com/sustainabili... #energysky
True.
The Nissan Leaf is an example of EVs getting much better and cheaper. EVs are skyrocketing globally because of their longer ranges, faster charging performance, better batteries and falling cost. ICE autos are declining globally, because they are losing the competition with EVs. #energysky.
Good morning with good news: Few things cost less in 2025 than in 2011, but the Nissan Leaf does. In 2011, the Leaf cost $32,780 ($47,077 inflation adjusted) with a range of ~100 miles. The 2026 Leaf costs $29,990 with 303 miles range! ~17K dollars less! electrek.co/2025/08/19/2... #energysky
New York and other Blue states can pursue true energy abundance by accelerating solar, wind and battery deployment. They can do so by removing obstacles to solar, wind and storage development and continuing to use state law/policy and purchases like NYPA's to accelerate deployment. #energysky
Good morning with good news: New York Power Authority doubles planned, new, renewable/battery storage capacity to 7 GW! It adds 20 utility-scale projects, including 3 wind farms, and 156 distributed projects. NYPA provides 22% of NY's electricity. www.utilitydive.com/news/nypa-up... #energysky
Battery innovation is substantial. Costs going down. Performance going up
Wonderful!
You're generous. Good thing to be.
True! Solar plus batteries now can economically generate 60% of Birmingham UK's electricity. So why not Winnipeg, Canada? #energysky
Absolutely true. Those false, wrong arguments were common in 2015-2020 period. See @thebti.bsky.social and @tednordhaus.bsky.social. Now 60%-97% solar is economic in many places!
'uses grid-forming technology to operate as a reliable voltage source...microgrid supports voltage total harmonic distortion (THDu) of less than 1.5% in off-grid mode and current total harmonic distortion (THDi) of less than 1% in grid-connected mode under rated conditions'
The Ember White Paper is a must read. ember-energy.org/app/uploads/... #energysky The crickets from critics of solar about this paper is interesting. Silence indicates that the paper is right that solar/ storage can economically generate 60%-97% of electricity need in most places. #energysky.
Good morning with good news: 24/7 solar is here! Red Sea New City in Saudi Arabia operates a 24/7 400 MW solar plus 1.3 GWh storage microgrid. www.ess-news.com/2024/09/18/h... #energysky. 100% solar is expensive but solar & storage can economically generate 60%-97% of electricity in most places!
Good morning with good news: The cost of solar plus storage fell 22% in 2024 7 43% since 2019. Solar & storage can economically supply 60%-97% of electricity demand in most places. Falling global solar & storage costs pushed down its price to $104/MWh. #energysky www.carbonbrief.org/guest-post-h...
Indonesia starts a program to deploy 100 GW of solar and 320 GW of battery storage, with 80 GW in 80,000 villages. Wow! Solar brings cheap, clean power to places with little electricity. It combats energy poverty more than any other generation tech. www.pv-tech.org/indonesia-ta... #energyflak
Good morning with good news: AES begins construction on 1.6 GW solar-wind-battery project in Chile! It will fully operate in 2026. It will be 925 MW solar, 380 MW wind & 300 MW battery. W&S were 43% of Chile's electricity in January 2025 & 34% in 2024. www.pv-tech.org/aes-andes-br... #energysky
The annual build is now at an EXTRAORDINARY high level. It will add about 500 GWs of wind and solar in 2025. 600 TWh per year for 7-8 years is the equivalent of total US electricity consumption or nearly three Australia's every year. Huge Level.
Good morning with good news: China's CO2 emissions have been stable or falling since March 2024! Why? It's building huge amounts of clean generation, equivalent of nearly Three Australia's Per Year. Its oil demand will also peak by ~2027. Why? EVs!! www.abc.net.au/news/2025-08... #energysky
Germany's Average Price for large solar is 5.65 cents/kWh in its latest tender. Germany just allocated 2.27 GW for utility-scale solar, with 4.7 cents/kWh the lowest price. Germany was 15.5% solar in 2024. It may be 20% solar in 2025! www.pv-magazine.com/2025/08/14/g... #energysky
Good morning with good news: Wind & solar generated 57.5% of Germany's electricity in June 2025! That is up from 47.7% in June 2024 & double the 28.8% in June 2021. W&S output surged 33% to 21.1 TWh in June 2025 from 16.6 TWh in June 2024. Germany is the world's 3rd largest economy. #energysky
Good morning with good news: Global EV sales surge 27% in first seven months of 2025, compared to 2024! China: 6.5 million, +29% Europe: 2.3 million, +30% North America: 1.0 million, +2% Rest of World: 0.9 million, +42% World leaves USA behind. rhomotion.com/news/global-... #energysky
18 Months To Build Indian 1.2 GW Solar Plant! Why did India's solar & wind generation gain FOUR points of market share in the 12 months from June 2024 to June 2025? India builds huge solar plants like the future Jalaun 1.2 GW in 18 months! www.pv-magazine-china.com/2025/08/04/%... #energysky
Most national leaders in the world are all-in on clean energy. India announced in July that it achieved 5 years early its 2030 goal of 50% clean generation capacity. Wind, solar & battery storage skyrocket globally. Why? Low cost! National support!! www.pib.gov.in/PressRelease... #energysky
Good morning with good news: India's wind & solar jumped 29% in June 2025 (27.8 TWh), compared to June 2024 (21.5 TWh)! W&S surged to 17.5% of India's power in June 2025 from 13.3% last June. W&S gained 4 points of market share in 12 months in world's 5th largest economy! Incredible! #energysky
Yep. Wind and solar pay substantial land leases to landowners. They also pay significant local taxes that fund schools and other local budget items. Attacking wind and solar also attacks the economy, including rural economies. Attacking wind and solar also raises electricity prices. #energysky.
The Top 12 wind power states have electricity rates below the May 2025 YTD US average of 13.18 cents/kWh, as calculated by the EIA. Many of the Top 12 wind states have prices that are 25% or more below the US average. America cannot have affordable, clean power without wind! #energysky
