Commercial solar calculator
Screen the business case before you ask for a quote.
Use your monthly bill, blended tariff and likely daytime solar offset to estimate system size, capex, savings, payback and finance cash-flow. It is a test model, not a final proposal.
Why it is directional
The roof is only one part of the model.
- Tariffs and demand charges change the real saving.
- Operating hours decide how much solar can be used on site.
- Batteries and generator integration add resilience value, not only kWh savings.
- Finance, VAT and Section 12B can change the cash-flow profile.
Estimate
Run a first-pass commercial solar model.
Indicative model
What the assumptions suggest.
Use this as a first-pass business case only. We model the actual site before specifying panels, inverter, batteries or generator integration.
Solar saving less indicative finance payment. This excludes VAT treatment, demand charges, tariff escalation, battery value and tax benefits.
How to use this
Three things to check before trusting the number.
Use a blended tariff
Divide the total electricity bill by kWh used. If demand charges are material, the real saving may differ.
Keep the offset realistic
Most commercial grid-tie sites reduce a portion of the bill, not the full bill. Daytime load drives the answer.
Validate with a site model
A final proposal needs the bill, load profile, roof or land, backup requirement, metering and finance route.
The system has exceeded initial performance projections, delivering better-than-anticipated yields - a result that speaks to both the accuracy of their modelling and the quality of their execution.
A calculator is a starting point. The decision needs a model.
Send us the bill and site context when the first-pass numbers look worth testing.
Get your solar model