A few small loads and room to grow
Map DC loads and a realistic daily usage table before spending money on a giant inverter.
Read the detailed buying guide →
Fit first. Parts second.THE SYSTEM BENCH / Interactive buyer planner
Build the whole circuit. Not just a cart of panels.
A flashy panel specification is only one line in the schematic. The whole system has to fit together from the first connector to the last appliance. Start with the appliances, map the system and shop components that belong together. Less guesswork, fewer compatibility surprises.
Size the energy before you shop
Enter a daily energy budget in watt-hours, realistic peak sun hours, how many days of battery-only reserve you want, and your largest expected simultaneous running AC load. This quick estimate uses 75% solar derating, 80% usable storage, and a 25% inverter sizing allowance. It is an educational screen, not a verified design or a promise of compatibility.
Try an example, then edit your numbers:
Estimated panel nameplate500 WDaily Wh ÷ (sun hours × 0.75); rounded upward. Site shade and seasons change output.
Nominal battery capacity2.9 kWhDaily Wh × reserve days ÷ 0.8. Real usable energy varies by product and temperature.
Illustrative inverter continuous rating1,300 WRunning load × 1.25. Motor-start surge must be verified separately.
Do not use this estimate to size life-safety equipment or make electrical connections. Confirm actual appliance measurements, manufacturer voltage/current specifications, protective devices and local codes. For outages, fuel-generator safety and approved transfer equipment are separate considerations.
Three ways to make it work
Panels are working; nights are not
Find usable storage, charge controller limits and battery charging constraints before doubling panel wattage.
Read the detailed buying guide →
Fit first. Parts second.Panels, storage, protection and inverter together
Use one compatibility checklist for array voltage, controller, battery, cables, protection and AC output.
Read the detailed buying guide →
Fit first. Parts second.A solar lab for real-world loads
List voltage, daily energy, charging current, inverter demand, wire lengths and protection requirements before choosing a kit.
DC battery circuits can deliver dangerous fault currents. Treat fusing, isolation, grounding and manufacturer limits as essential, not accessories.
The complete solar kit buying bench
Research the specific Renogy and BLUETTI equipment, read the full pre-purchase checklist and try the new interactive tool.
Open complete-system shopping guide →Two ways to buy. Compare the actual fit.
These buttons lead to manufacturer storefronts through affiliate tracking. They do not assert that a particular bundle is in stock, priced at a certain amount, or compatible with your design. Verify each selected configuration on the merchant website.
Modular systems / Renogy
Build around a complete parts list
Modular solar equipment can suit permanent off-grid builds and RV system expansions. Confirm panel/controller voltage, charging limits, battery chemistry, breakers and installation requirements together.
Explore Renogy systems ↗Portable power / BLUETTI
Check integrated power stations
Battery stations offer supported AC or DC outputs in a single portable unit. Compare usable Wh, continuous W, surge, solar-input limits and recharge time before choosing a model.
Browse BLUETTI stations ↗Affiliate disclosure: We may earn a commission on qualifying purchases made through marked links, at no added cost to you. We have not purchased or physically tested every product discussed.
Check the fit before checkout
- List actual loads in watts and daily operating hours.
- Check peak and starting loads separately.
- Verify battery usable capacity and charging temperature limits.
- Check panels, controller, charger, cables and connector compatibility.
- Price protective equipment, mounts and professional installation where needed.
Still deciding?
Begin with the site's detailed sizing guide, then read the field notes for the trade-offs that matter to your use case.