Comparison
Solar vs Staying on the Grid
Payback is driven by your electricity rate and how much generation you use directly. Above about 18 cents per kWh with high daytime use, the case is usually strong.
Option A
Install solar
In favour
- Locks in a large share of your energy cost
- Incentives can cut a third off the price
- Continues producing well past payback
- Adds value in high-rate markets
Against
- Large up-front cost
- Payback depends on rates you cannot control
- Roof condition and shading can undermine output
vs
Option B
Stay on the grid
In favour
- No capital outlay
- Full flexibility if you move
- No maintenance or inverter replacement
Against
- Fully exposed to rate increases
- No asset at the end of it
Settle it
Solar Savings Calculator
annual saving = generation × (self-use × retail rate + export share × export rate)
Estimates, not advice. Every figure here is produced from the inputs you enter and the formula printed on the page. Rules differ by state, carrier, lender and contract, so use these numbers to prepare for a conversation with a qualified professional rather than to replace one. See our full disclaimer.