Saving creates a project. Send it to OpenSolar from the Projects tab.
Saved projects · saved calculations · send each to OpenSolar
🔒 Pricing is locked. Unlock with the Admin PIN to edit and save figures.
These are the figures that drive the calculator. Edit any number, then Save. Everything is stored in this browser. Totals in the calculator round up to the nearest whole £.
Commission · auto-added to every quote as a % of the sell price
⚠️ 10% is a PLACEHOLDER — NOT an agreed rate. It's just a random default. Set the real commission % here before anyone quotes.
Commission rate
%
% of sell price
Panels · price per panel (installed)
Panel type
Price / panel
Batteries · brand + kWh · one dropdown
⚠️ Battery prices seeded from the "additional battery" column of the 11 Jun matrix — confirm the real add-a-battery price for each.
Battery (brand + size)
Price
Hybrid Inverters
⚠️ Only the 5kw Hybrid (£400) came from a screenshot. Add your other inverter sizes + prices here.
⚠️ Seeded from the matrix "Battery only" column (battery incl. inverter). Confirm each retrofit price.
Retrofit option
Price
Extras
Item
Unit / note
Price
Info (tooltip)
Labour
Item
Price
Scaffold
Item
Price
Payment methods · uplift % grosses the price up to cover the lender fee (0 = same as cash)
Method (label shown to customer)
Price uplift %
Reference — Package Pricing Matrix (from 11 June 2026)
⚠️ Read from a blurry photo — verify these before using them. A different (newer) pricing model to the calculator above: base package = 12 × 480W Longi panels + inverter brand + battery. Extra panel £250 each · Non-stock panels £30/panel. Reference only — it doesn't feed the calculator yet.