Observed arrival · 2026-11-04
PlanMyWatts sizes the backup power problem
A collection of free calculators for sizing power stations, generators, RV solar systems, and home battery backup.
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- Campers, RV builders, and home-backup planners
- Worth noticing
- The sizing claims account for 85% inverter efficiency, 75% solar derating, appliance duty cycles, and motor start-up surge.
Field notes
Visitors can choose among separate sizing paths for portable stations, generators, RV/van solar, home backup, solar recharge, and appliance running costs. The page says its estimates include 85% inverter efficiency, refrigerator duty cycles, 75% solar derating, and startup surge checks; solar sizing also uses sun-hours by U.S. state. A comparison table is described as covering 11 models, with capacity, output, solar input, and weight.
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○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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