kW and kWh are not the same thing, and the difference is on your bill
The single most expensive confusion in commercial energy. One is a rate, one is a quantity, and your utility charges you for both separately.
By Eli Brandhorst
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Field notes
Four pieces on the parts of commercial solar that cost people money: the unit confusion, the interconnection screens, row geometry and Valley dust. Written by the people who handle them.
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- Units, permits, geometry, O&M
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What actually fails a Rule 21 fast track screen
Most commercial projects clear the screens. The ones that don't usually fail for reasons you could have discovered for a few hundred dollars in week one.
July 2, 2026 · Dolores Fuentes
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Row spacing is a money decision, not a drafting decision
How far apart the rows sit decides how many kilowatts fit on your land and how much of every winter morning you give away.
May 21, 2026 · Priya Raghunathan
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Soiling in the Valley: when to wash an array and when not to
Dust is the largest recoverable loss on most San Joaquin Valley arrays. Washing on a calendar wastes money in both directions.
April 9, 2026 · Anneke Visser
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We would rather explain it than sell around it
Every one of these notes exists because a client asked and the honest answer took more than a paragraph.
CSLB #1071482 (sample). Prevailing wage on public works. Engineers answer, not a call centre.