Solar tools and calculators
Every tool shows its full result straight away, with no phone number asked for, and explains how it worked the figures out. They use the same Punjab tariff, subsidy and generation figures throughout.
Size a system
- Solar calculator
Size, subsidy, cost and payback from your PSPCL bill.
- Commercial solar ROI
The same calculator for a shop, office, school or factory: size, saving and payback.
- New house solar calculator
No bill yet: size from the appliances you plan to use.
- Roof capacity calculator
How many kW your roof takes, the panels, the units and the price.
- Battery backup calculator
The inverter and batteries to keep chosen loads running through a power cut.
- Off-grid solar calculator
Panels and batteries for a site with no grid connection.
- Solar pump and tubewell calculator
Panels for a pump, and the water it should give at your depth.
Plan and choose
- Solar generation by location
Units a month from a system in your town, month by month.
- Solar system selector
Five questions to on-grid, hybrid, off-grid or a solar pump.
Compare quotes
- Solar quote comparison
Put up to three quotes side by side: price per kW, subsidy and what each leaves out.
Guides to read alongside
The solar guides and PDF library has buying guides, the subsidy steps and checklists for quotes, installation and maintenance, each one free to download.