Top 8 Off-Grid Solar Companies in the US

Off-grid solar means full system design — panels, inverters, batteries, and a charge controller sized to your load. These companies serve the off-grid market specifically, not just rooftop grid-tie.

1. 1. Battle Born Batteries — The lithium battery standard for off-grid and RV — drop-in 100Ah 12V LiFePO4 packs with a 10-year warranty. US-built in Reno NV.
2. 2. EcoFlow — Plug-and-play solar generators (DELTA Pro, DELTA Max) — best for partial off-grid setups and RV power without DIY wiring.
3. 3. Goal Zero — The original portable solar brand. Yeti power stations + Boulder panels work well for small cabins and RVs.
4. 4. Tesla Powerwall — Premium home battery — best if you're combining solar + grid backup, less ideal for true off-grid where you want modularity.
5. 5. Outback Power — Off-grid-specific inverters/charge controllers — FLEXmax MPPT controllers and Radian inverters power many serious off-grid homes.
6. 6. Victron Energy — European brand, gold standard for off-grid system components — inverters, MPPT controllers, monitoring (Cerbo GX). Reliable, scalable, expert-favourite.
7. 7. Renogy — Mid-tier solar panels, kits, and accessories. Best entry point for DIY off-grid solar builds — extensive online documentation.
8. 8. Backwoods Solar — Off-grid system designers since 1978 — Idaho-based specialists who design custom packages and ship complete kits.