Commercial solar savings calculator
Enter your electricity spend to estimate the system size, annual saving, payback and year-one tax relief for solar panels for shopping centres. Indicative only, not a quote.
Indicative estimate
- Recommended system
- 90 kWp
- Annual saving
- -
- Simple payback
- -
- Year-one tax relief (AIA)
- -
- 25-year saving
- -
Assumptions: yield per kWp per year, install cost per kWp, the Smart Export Guarantee rate for exported units and the corporation tax rate behind Annual Investment Allowance relief are each a placeholder you should replace with your own figure. These are illustrative defaults; your figures depend on roof, shading, load profile, tariff and tax position. This tool does not store any data you enter.
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Calculator FAQs
How accurate is this calculator?
It gives an indicative estimate from placeholder assumptions for yield per kWp, install cost per kWp and the Smart Export Guarantee rate, each of which you should replace with your own figure. Your real figures depend on your roof, orientation, shading, load profile and tariff. A precise figure needs a model built on half-hourly meter data.
What is self-consumption and why does it matter?
Self-consumption is the share of solar you use on site rather than export. On-site use saves the full electricity price, while exported units earn only the lower Smart Export Guarantee rate, so a higher daytime load means a shorter payback. The slider lets you set your daytime usage share.
Does the estimate include tax relief?
Yes. Commercial solar usually qualifies as plant and machinery, so the calculator shows indicative year-one Annual Investment Allowance relief at a placeholder corporation tax rate you should replace with your own. Eligibility depends on your tax position and profits.
Is this a quote?
No. It is an indicative estimate to help you scope the opportunity. A real proposal needs your meter data, a roof assessment and a grid check, all of which a feasibility study normally covers.