The right off-grid solar parts, sized for your rig.
Tell us how you use power and what you'll spend. We size the whole system — battery, panels, charge controller, inverter and alternator charger — check every part works with the others, and hand you the exact SKUs to buy and why. No spreadsheets, no $50-vs-$300 panel guesswork.
48 cross-brand parts · 5 categories · compatibility-checked · RV/van
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🛠️ The planner
Enter your loads, autonomy and budget → a full sized, compatible parts list in seconds.
📋 Pre-configured builds
Vetted full parts lists from a $550 weekender to a premium cross-brand rig.
⚖️ Brand vs brand
Renogy vs Victron, Battle Born vs LiTime — the decisions builders actually agonize over.
🔆 Solar Panels
10 cross-brand panels with full specs, ranked by fit.
🎛️ Charge Controllers
10 cross-brand charge controllers with full specs, ranked by fit.
🔋 Batteries
10 cross-brand batterys with full specs, ranked by fit.
⚡ Inverters
10 cross-brand inverters with full specs, ranked by fit.
🔌 DC-DC Chargers
8 cross-brand DC-DC chargers with full specs, ranked by fit.
🧭 How we pick
Datasheet-sourced, neutrally ranked, compatibility-checked. Our methodology, in the open.
Popular builds
AGM DC-Only Minimal (100W / 100Ah AGM)
The lowest-upfront-cost way to add a little solar to an older RV that still runs lead-acid/AGM. DC loads only. Shown mostly to make the AGM-vs-lithium trade-off concrete — you pay less now but get half the usable capacity and far more weight.
Budget Weekend Starter (100W / 100Ah, no inverter)
The cheapest credible RV solar setup: keep the lights, fridge, fans and USB devices running for a weekend off-grid, with no AC inverter to buy or wire. Add an inverter later when you actually need 120V.
Remote Worker (300W / 200Ah / 2000W + alternator)
Built to keep a mobile office alive: Starlink, two laptops, monitors and a fridge, with enough solar to work through a cloudy day without driving. Budget-leaning LiTime batteries keep the cost down.
Premium Cross-Brand (400W / 200Ah Battle Born / Victron)
A buy-it-once build using the most-trusted names in each category: Renogy panels, a Victron MPPT and Orion DC-DC, Battle Born batteries and a Samlex pure-sine inverter. More expensive, but the components with the deepest reliability track records.
Why this exists
Off-grid solar advice is either a generic kWh calculator that never tells you what to buy, or a brand store that only sells its own gear. SolarBuildPlanner is cross-brand and specific: it picks actual SKUs across Renogy, Victron, Battle Born, EPEVER, LiTime and more, justifies each one, and checks they're compatible before you spend $3,000 on parts that don't work together.