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Contractor tool
Pro Proposal Builder
Turn a client’s load into a costed, client-ready off-grid proposal — sized on the same arithmetic as our public calculators, priced at your rate and your margin. It prints as a one-page quote under your own company name.
Project
Client load & off-grid system
kWh/day
W
h/day
W
h/day
W
h/day
W
h/day
W
h/day
W
h/day
W
h/day
W
h/day
W
h/day
W
h/day
0.0kWh/day
PSH
%
days
Required array
0 kW DC
Panels (400W)
0 (0 kW)
Usable battery
0 kWh
Nameplate battery
0 kWh
Battery bank
0 Ah
Inverter
0 kW
Your costs & margin
$/hr
hrs
%
Cost subtotal
$0
Your margin
$0
Proposal total
$0
Hardware anchors are documented mid-2026 US$ figures in the page source — a starting point, not your supplier’s pricing. Edit the arithmetic to your own numbers before you send anything.
Your Company
Off-grid power · system design & installation
Off-Grid System Proposal
Prepared for —
System specification
Daily load
0 kWh/day
Peak sun hours
0 /day
Autonomy
0 days
Solar array
0 kW DC
Modules
0 × 400 W
Inverter
0 kW
Battery (nameplate)
0 kWh
Bank
0 Ah @ 48V
Chemistry
LiFePO4
Investment
| Solar generation | $0 |
| Battery storage | $0 |
| Inverter & power electronics | $0 |
| Balance of systemRacking, charge control, wiring, protection & monitoring | $0 |
| Installation labour | $0 |
| Cost subtotal | $0 |
| Margin & overhead (20%) | $0 |
| Estimated total | $0 |
Notes