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/daily ·23 AUG 2026 ·SUNDAY ·2 MIN READ ·6 STORIES

China's solar province, America's grid math, and electric aviation's first lap

China's most industrially dense province crossed 100 GW of solar. US grid analysts warn data centers could spike emissions 20%. And a Swedish electric aircraft completed the first flight that makes its regional service programme credible.

01 / The Day

SUNDAY 23 AUG 2026, ranked

06

China's Jiangsu province crosses 100 GW of installed solar — a national first

Jiangsu, China's most industrially dense coastal province, passed 100 gigawatts of installed solar photovoltaic capacity — a figure that would rank it as the world's fourth-largest solar market if it were a country.

  • The 100 GW milestone took roughly four years from Jiangsu's first 50 GW, with deployment accelerating as module prices fell below $0.10/W
  • Jiangsu's solar fleet now exceeds Germany's total installed solar capacity
  • Curtailment is becoming a grid management challenge as midday solar output regularly exceeds local demand
Why it mattersSingle-province solar capacity matching a major European nation's entire fleet is the clearest data point yet on how fast the Chinese energy transition is actually moving.
01 pv-magazine.com↗

Data centers could spike US power-sector carbon emissions by 20%

Analysis by Heatmap News finds that if the current US data center construction pipeline completes on schedule, the resulting electricity demand increase could raise power-sector emissions by up to 20% — reversing years of decarbonisation gains.

  • The 20% figure assumes grid operators fill new load with a mix of existing fossil generation and new gas peakers, as renewable and storage builds lag demand
  • The data center industry has committed to 24/7 clean energy matching; how that is achieved at the current build-out pace is unresolved
  • Both TVA and PJM have recently approved gas-backed data center power contracts
Why it mattersThe grid's ability to absorb AI compute infrastructure without undoing decarbonisation depends on whether renewable buildout outpaces demand — and right now, demand is winning.
02 heatmap.news↗

Heart Aerospace X1 electric aircraft completes its first flight

Swedish electric aircraft maker Heart Aerospace flew its X1 technology demonstrator for the first time, validating propulsion and battery management systems intended for its ES-30 30-seat regional electric aircraft programme.

  • The X1 is a single-seat demonstrator at roughly one-sixth the scale of the ES-30; a successful first flight validates core systems, not commercial performance
  • Heart Aerospace has United Airlines as an investor and conditional orders for 200 aircraft from regional carriers
  • The ES-30 targets routes of 200 km or less — the segment where current battery energy density is already commercially viable
Why it mattersFirst flights mark the transition from engineering claims to empirical evidence; the next gates are range-at-cruise testing and the start of FAA certification dialogue.
03 cleantechnica.com↗

Anthro Energy opens US factory for sodium-based grid batteries that cannot catch fire

Anthro Energy began operations at a US manufacturing facility producing sodium-ion battery modules designed for grid storage, using a chemistry the company says eliminates thermal runaway — the fire risk behind multiple grid-scale BESS incidents.

  • Sodium-ion chemistry contains no reactive lithium compounds, removing the mechanism that drives thermal runaway in lithium-based cells
  • The US factory positions Anthro Energy to access IRA domestic manufacturing credits for grid-scale storage
  • Grid battery fires have become a growing insurance and community-acceptance problem; chemistry-level elimination changes siting dynamics
Why it mattersA grid battery you can site next to a school or hospital without a fire risk exception changes where utility-scale storage can go — not just how much it costs.
04 electrek.co↗

ESS Inc CEO: we abandoned iron flow batteries for sodium-ion in 2021

The CEO of ESS Inc, which spent years developing iron flow batteries for long-duration grid storage, said the company decided the technology was not ready in 2021 and has pivoted to sodium-ion chemistry, which it believes can reach commercial scale faster.

  • Iron flow batteries use abundant, non-toxic materials but have struggled with energy density and round-trip efficiency at production scale
  • Sodium-ion benefits from lithium-ion manufacturing learnings; existing cell lines can be adapted with modest retooling
  • A company that built its entire identity around iron flow chemistry walking away is a significant signal for the long-duration storage field
Why it mattersWhen the company most associated with a storage chemistry says it changed course, the commercial viability of that chemistry needs a serious reassessment by the investors who backed it.
05 energy-storage.news↗

Lawsuits claim data center construction bans are unconstitutional

Legal challenges have been filed against local government moratoria on data center construction, arguing the bans conflict with federal communications law and interstate commerce clauses — a constitutional framing that could invalidate dozens of local restrictions.

  • The argument draws on Commerce Clause preemption, the same legal theory that limits state rules on pipeline and transmission siting
  • Local bans have accelerated as communities resist electricity load growth, noise, and water use from AI facilities
  • If the challenges succeed, AI infrastructure developers gain significant permitting leverage over local governments
Why it mattersThe legal contest over who controls data center siting will determine where the AI buildout physically lands — and at what cost to local energy grids and communities that did not choose to host it.
06 heatmap.news↗
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/SUN 23 AUGChina's solar province, America's grid math, and electric aviation's first lap/SAT 22 AUGSaturday Spark/FRI 21 AUGBring your own electrons/THU 20 AUGFactories going live/WED 19 AUGForm's $750M, CATL's carbon decree, and what 4.3 cents means/TUE 18 AUGTuesday: the cheap-cell era, revised/MON 17 AUGCells Back Online/SAT 15 AUGScale, tangibly/FRI 14 AUGThe Quarter the Consumer Took Over/THU 13 AUGScotland gets a big battery, China gets the biggest/WED 12 AUGThe grid doubles, the river runs hot, and Amazon builds America's biggest gas plant/TUE 11 AUGMaking It Here/MON 10 AUGA gigawatt-hour in Rajasthan, a Joby milestone, and the cheddar test/SUN 09 AUG12.8 GWh in China, solar tariff shock, and RWE's billion-dollar exit/FRI 07 AUGUS hits polysilicon; Ørsted stacks 500 MWh in Texas/THU 06 AUGGrid delays, grid storage, and grid-scale bets/WED 05 AUGHome batteries scale up, microreactors raise $1B, and China ends the solar price war/MON 03 AUGFusion gets its billion; perovskite breaks 28%/SUN 02 AUGSurplus signals/SAT 01 AUGThe Heat Is the Story/FRI 31 JULCalifornia hits 51% monthly solar; China sets record targets