Install solar
Understand your consumption first, then size the right system and estimate how long it takes to pay back from savings.
How this journey works
These aren't separate calculators — they're 2 connected steps that build to one decision. Do each step, note its headline number, and carry it into the next.
1Understand your bill
Estimate your electricity bill and the running cost of big appliances.
↪ Use this step's result in the next step.
2Size & payback
Size the system you need and estimate the payback period.
Related categories
Making your decision
- Gather the headline number from each step in one place.
- Weigh the monthly cost against your income and priorities.
- Don't forget non-financial factors: stability, time, peace of mind.
- Results are estimates — confirm official figures before deciding.
Results are estimates and not professional advice. Verify important decisions with a qualified professional.