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Demand Charges: Why One 15-Minute Peak Sets Your Bill
A demand charge is set by your single highest 15-minute peak, not your total usage – and it can be 30-70% of a commercial power bill. Here’s the math, the ratchet trap, and the fix.
The BrightVolt Take: The 750kW Charger No Car Can Use
EVgo just previewed a 750kW fast charger for 2027. The fastest EV sold in America peaks at 600kW, and most top out at 350 or less. The number on the pylon has left the cars behind.
How 100-Hour Batteries Work: Iron-Air and Carbon-Oxygen
Iron-air and carbon-oxygen batteries store power for days and give back barely half of it. That inefficiency is the point: they cost a tenth of lithium per kWh, for a job lithium cannot do.
The BrightVolt Take: Solar and Wind Got More Expensive
For the first time in a decade, solar and wind got more expensive in 2025: BNEF has global solar up 6%, Lazard US solar up 18%. Only storage kept falling – and that changes what to build.
The BrightVolt Take: Geely’s Nio Deal Won’t Fix Car Swapping
Geely is buying 30% of Nio’s battery-swap arm at a $2.2bn valuation. It looks like the standardisation breakthrough swapping needed. It is two loss-makers consolidating to survive.
System Strength: The Grid Service Inverters Can’t Fully Fake
As grids fill with wind and solar they run short of system strength – the fault current that lets protection sense a fault. Why it happens, and why the fix is often a machine that generates nothing.
The BrightVolt Take: China’s EV Boom Is Outrunning Battery Validation
China launched 600+ new EV models in H1 2026, nearly four a day. CATL’s own chairman says the pace is causing battery ‘batch failures’ – and this year’s recalls back him up.
Wave-Making Resistance: Why Speed Drains an Electric Boat
A 69 kWh electric hydrofoil outranges a 110 kWh conventional boat. The reason is wave-making resistance: the wall of water a hull builds as it speeds up, and why foiling beats a bigger battery.
Alberta’s $14 Solar Panel Recycling Fee Starts Oct 1
From October 1, Alberta charges C$14 to recycle every new solar panel and bans them from landfill. The industry backs recycling but calls the fee a punitive tax set with math it won’t show.
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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