Commercial Solar Calculator

    Calculate Your Business Solar ROI

    Compare CAPEX vs PPA options with detailed 30-year projections. See exactly how much your business can save.

    Your Business Details

    100 kW
    50 kW2 MW
    €2,000
    €500€20,000
    €0.28

    100% write-off in Year 1

    System Cost

    €90,000

    After ACA relief

    Annual Savings

    €20,925

    90,000 kWh/year

    Payback Period

    4.3 yrs

    Break-even point

    30-Year ROI

    844%

    €849,200 savings

    CAPEX vs PPA Comparison

    MetricGrid OnlyCAPEXPPA
    Upfront Cost€0€90,000€0
    Year 1 Cost€24,000€3,075€19,500
    30-Year Total Cost€1,141,810€382,610€333,528
    30-Year Savings—€849,200€808,282

    30-Year Cumulative Cost Comparison

    Assuming 3% annual grid price increase

    Yr 1Yr 3Yr 5Yr 7Yr 9Yr 11Yr 13Yr 15Yr 17Yr 19Yr 21Yr 23Yr 25Yr 27Yr 30€0k€300k€600k€900k€1200k
    • Grid Only
    • CAPEX

    Grid Only

    €1,141,810

    CAPEX

    €382,610

    Environmental & ESG Impact

    Your 100 kWp system will generate 90,000 kWh of clean energy annually, saving 810 tonnes of CO₂ over 30 years.

    Ready to Save Your Business Thousands?

    Get a personalised proposal with exact figures for your business premises.

    CAPEX vs PPA: Which is Right for You?

    Choose CAPEX If...

    • You have capital available for investment
    • You want maximum long-term savings
    • You can benefit from ACA tax relief
    • You prefer owning assets outright

    Choose PPA If...

    • You want €0 upfront investment
    • You prefer predictable energy costs
    • You want immediate savings from day one
    • You prefer no maintenance responsibility