System builder
Size it from what you actually run.
Pick your loads and we compute the bank, the array, the electronics — and every wire, fuse and connector the build needs, sized to NEC methods and priced across every merchant we track.
What are you powering?
Toggle what you run and adjust hours per day. Watts are typical — edit them to match your gear.
Conditions
Autonomy is how many cloudy days the bank must carry. Sun hours vary by region and season — winter number, not summer.
Pick your components
Only parts that satisfy the sizing above and pass compatibility are offered. Quantities are computed for you.
Bill of materials
Everything the build needs — including the balance-of-system parts sized by NEC 690.8. Each line at its cheapest listed merchant.