How much could solar save on your power bill?
Solar and battery storage can significantly reduce what you pay for electricity — sometimes by most of your bill. Adjust your energy usage, system size and battery capacity below to see an estimate for your country.
Solar & Energy Savings
How solar reduces your electricity bills
The calculations below compare your current power bill with what your bill would look like once solar and — if you choose one — a battery are installed. Your Old Bill of - per month (- annually) is calculated from your total energy consumption multiplied by the grid electricity rate. Your New Bill of - per month (- annually) accounts for solar generation, the percentage you use directly (self-consumption), remaining grid consumption, and feed-in credits for excess energy exported to the grid. This results in monthly savings of - (- annually).
Your inputs
Adjust the numbers below to match your household. The savings above update as you move each slider.
Your energy usage
Your power bill depends on how much electricity you use each day, what your retailer charges per kWh, and how much solar energy you actually use at home versus export back to the grid. The more accurate these three numbers, the more useful the estimate.
Solar & battery sizing
Price estimate
Based on your inputs above, here's a rough price for the system. It's a planning-stage estimate before rebates or incentives, and real installer prices vary by brand, location and roof complexity. For a real, no-obligation price, use the Get quotes button.
How this works
The estimate above compares your current power bill (no solar, no battery) with what your bill would look like once solar and — if you chose one — a battery are installed. It assumes you run your home the same way, and that your electricity price and feed-in tariff stay roughly the same.
It's a planning-stage estimate, not a quote. Real savings depend on your exact tariff structure (flat, time-of-use, demand charges), whether you shift some usage into daylight hours, and how your retailer prices exported solar.
What affects your savings
- Your daily energy usage and how it changes across the year
- How much of your usage happens during daylight hours (your "self-use" percentage)
- Your electricity rate per kWh and your feed-in tariff
- The size of your solar system
- Whether you add a battery, and how big
- Local incentives and rebates (not included in the estimate above — see rebates and tariffs for your country)
- Electricity price changes over time — when rates rise, your solar savings grow with them
Frequently asked questions
How accurate are these numbers?
This is a planning-stage estimate based on typical tariffs and generation for your country. Real savings depend on your exact tariff structure and usage patterns. For a detailed quote from a local installer, use the Get quotes button.
Do these savings include rebates or incentives?
No — the number shown is the raw savings on your electricity bill. Rebates and incentives (where available) usually reduce the upfront cost of the system, not the ongoing bill. See our rebates and tariffs section for what applies in your country.
How does a battery change my savings?
A battery stores solar energy during the day so you can use it at night instead of buying from the grid. In places where retail electricity costs much more than the feed-in tariff, a battery meaningfully increases your savings. In places with strong feed-in tariffs, the effect is smaller.
What electricity price and feed-in tariff should I enter?
Use your most recent bill. Look for the per-kWh usage rate (electricity price) and — if you already have solar — the per-kWh amount you are paid for exported energy (feed-in tariff). If you do not have a bill handy, start with the pre-filled values; they reflect a typical household in your country.
Will my savings change over time?
Usually they grow. Electricity retail prices have trended up in most markets; solar generation stays roughly constant over the panels' 25-year life. A solar system that pays back in five years often delivers fifteen-plus more years of essentially free electricity afterwards.
What if I do not use much electricity during the day?
Your self-use percentage matters a lot. If most of your use is in the evening, a solar-only system exports more to the grid at the low feed-in rate and saves you less. A battery is specifically the tool that converts evening grid purchases into stored-solar use — that is when battery savings are biggest.
Ready to get quotes?
The savings above are a planning-stage estimate. For a real price, get no-obligation quotes from local installers.
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Not ready yet? Explore the rest of our buying guide.
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