Free Download

The Commercial Solar ROI Template

A worked example illustrating a 250kWp Central Belt warehouse modelled across all three funding routes - CapEx, Asset Finance, and Solar PPA.

Commercial solar is a long-term capital investment that needs to be evaluated against the same financial criteria as any other capital project. Payback period, year one cash flow impact, capital allowance benefit, and 25 year return are the numbers that move trustee boards, finance committees, and operations directors.

Payback profile and return on investment

The template walks through a 250kWp Central Belt warehouse worked example. It shows payback period, year one cash flow impact, and 25 year cumulative return for CapEx purchase, Asset Finance, and Solar PPA routes side by side, with all input assumptions visible and editable for your own modelling.

Typical 4 to 6 year payback for well sited Scottish commercial systems on standard tariffs.

• Full input assumptions for a 250kWp Central Belt warehouse worked example
• Year one cash flow impact across CapEx, Asset Finance, and Solar PPA routes
• Payback period calculation and how to interpret it for each funding model
• 25 year return projection - typical 2 to 3 times original investment for well-specified industrial systems
• Capital allowance treatment under Annual Investment Allowance and Full Expensing rules
• Side by side comparison framework used by Caledonia Solar to model commercial returns
• Print ready format suitable for sharing with your finance committee or trustee board