Foundation Guides
Complete battery storage guides from beginner basics to advanced off-grid systems.
What Can a Battery System Power? The Honest Load Guide
A properly sized LiFePO4 battery system can power almost anything in your house — the real question is never can…
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The Home Backup Power Guide: Battery Systems Done Right
A home backup power system is a battery bank, an inverter, and a switch that decides which circuits keep running…
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Sump Pump Battery Backup System That Actually Fires
A sump pump is the load where battery backup earns its keep, because the moment you most need it —…
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EV Charging From Solar and Batteries: The Honest Way
Charging an EV from solar and batteries works, but only if you frame it correctly: it's a solar self-consumption strategy,…
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Well Pump Battery Backup System: How to Size It
A well pump is one of the most important loads to back up and one of the most misunderstood. When…
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Home Battery System Wiring Safety: The Complete Guide
A safe home battery system comes down to four non-negotiables: every conductor sized to carry more current than its overcurrent…
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Vehicle-to-Home (V2H) Explained: Your Car as a House Battery
Vehicle-to-home (V2H) means using your EV's traction battery to power your house — turning a 60-kilowatt-hour car pack into the…
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NEC Code for Home Energy Storage: What Applies
In the US, a home energy storage system lives mostly under NEC Article 706, with Articles 480, 690, 705 and…
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Solar System Size for EV Charging: Energy, Not Kilowatts
To charge an EV mostly from solar, the array has to be sized against the car's annual energy appetite and…
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Level 2 EV Charger Home Installation: A Buyer’s Guide to the Job
A Level 2 EV charger install at home is fundamentally a continuous-load circuit problem: a dedicated 240-volt branch circuit, sized…
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EV Charging at Home With Solar and Battery: The Integration Guide
EV charging at home with a solar-and-battery system works when you stop thinking of the car as a load and…
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Solar String Voc Rise in Cold Weather: The Wire-Margin Trap
Here is the gotcha that catches more careful northern DIY builders than any other cold-weather issue: a solar panel produces…
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