Observed arrival · 2026-09-17
Circuitcheck: Solar math that checks the cold
An off-grid solar calculator that evaluates panels, batteries, wiring, and kits against real locations and low-temperature conditions.
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●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
Circuitcheck combines equipment specifications with weather data from 318 listed locations, rather than treating nominal panel and battery ratings as sufficient. Its stated checks include cold-weather open-circuit voltage, battery-management-system limits, and wire sizing under NEC 690.7 or ABYC E-11, depending on the installation. The homepage also lists 290 components, 40 audited kits, and 12 guides with live calculators.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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