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Energy-Only vs Capacity Markets: What Each Rewards
An energy-only market pays a plant only for the power it makes; a capacity market pays it again, years ahead, just to stay available — the design choice behind Texas’s battery boom.
The BrightVolt Take: Korea’s $6bn Battery Catch-Up
South Korea is spending $6bn to leap to sodium and solid-state batteries. But its 2027 sodium target already trails a Chinese cell shipping in 2026 — the bet is aimed at the past.
Renewable Curtailment: Why Grids Throw Away Clean Power
Curtailment is a grid deliberately spilling wind and solar it could have used. Why it happens, why the official rate can be a third of the real one, and how grids stop wasting it.
Denza Z9S: The World’s Longest EV Range, Decoded
Denza’s Z9S claims the world’s longest EV range, 1,100 km. The record comes from a 20% bigger battery, not a more efficient car — and even the WLTP figure is a house conversion.
US Solar Modules Hit 100 GW. The Cells Are Imported
The US has built 100 GW of solar modules, most of it since the IRA. But module assembly is the easy step, and domestic cell capacity sits near 3 GW against 65 GW of module lines.
Captive vs Merchant Battery Makers, Explained
CATL makes 40% of the world’s EV batteries and builds no cars; BYD makes 14% and mostly uses its own. Why a cell maker’s customers, not its chemistry, set its ceiling.
The BrightVolt Take: How Texas Out-Built California on Batteries
Texas has more grid batteries than California and built them faster, with no storage mandate and no capacity market. The lesson isn’t politics. It’s market design.
Perovskite’s 27% Record and the Number That Ships
A Nanjing team pushed perovskite-organic tandem cells to a certified 26.88% — a real record, and the wrong number to watch. The efficiency that ships, and how long it lasts, lag far behind.
The BrightVolt Take: Europe’s 30% EV Month Is One Month
Headlines say European EV share hit a record 30.5% in August, beating every forecast. The official EU-wide figure is 20.7%, and the gap between them is the whole story.
Essential reading
The explainers the rest of the site links back to, and the numbers behind the headlines.
- Capacity accreditation: why 100 MW counts as 34 MW
- Peaker plants: the priciest power runs least
- Solar capture rate: why more solar earns less
- Why a 350 kW charger never gives you 350 kW
- EV range: CLTC vs WLTP vs EPA
- Lithium plating: why fast charging degrades batteries
- Why an e-bike battery beats a car battery
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News / Reviews / Insights on all things Electric & Alternative Energy
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News / Reviews/ Insights on all things Electric and alternative enegry
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