Solar planning without the sales pressure

Home Solar Sizer

Work out the rough size of your solar system, see what a battery may need to cover, and walk into installer conversations with better questions.

Start sizing Estimate payback

No signup
No quote gate
No contact details needed

Check your roof Plan EV charging Prepare questions

Start here

Get from "maybe solar" to a practical first plan.

Home solar decisions can feel noisy: panels, batteries, inverter types, roof condition, EV charging, export rates, backup circuits. This site keeps the first pass simple and gives you plain-language pages for the questions that usually come next.

Example output

Panels12

Battery10.5 kWh

InverterHybrid

Run your own numbers in the calculator, then use the guides to sanity-check the next steps.

Tools

Calculators and wizards

Use these when you want numbers, comparisons, or a clearer path through a decision.

Main calculator

Solar panel, battery, and inverter sizing

Choose your location, add appliances, adjust usage hours, and get a first estimate for panels, battery storage, peak load, and inverter direction.

Open calculator

Money side

Solar payback period

Estimate annual savings and simple payback using system size, energy price, export value, incentives, and installed cost.

Estimate payback

Electrical supply

Single-phase vs three-phase

Use the guide and wizard to understand what your home supply can mean for inverters, EV chargers, and large electrical loads.

Check home supply

Quote prep

Installer checklist

Prepare for your first installer call with a calm list of what to gather, what to ask, and how to compare proposals fairly.

Prepare questions

How to use it

A simple route through the messy bits.

Size the system. Use the calculator to get a first estimate from your location and appliances.
Check the context. Read the roof, EV, phase, and payback pages that match your situation.
Talk to installers better prepared. Bring your assumptions, ask sharper questions, and compare quotes with less guesswork.

Illustration of a home with solar panels and a planning checklist

Guides

Helpful reading before you buy anything

Short, practical pages for the questions homeowners usually meet after the first estimate.

How it works Understand the calculator logic in plain English. Roof checklist Check roof age, shade, access, waterproofing, and reroof timing. EV charging with solar Plan around charging time, solar surplus, charger power, and tariffs. Single-phase vs three-phase Learn what your supply may mean for solar and large home loads. About See what the site does, what it does not do, and how to use it well. Privacy Read how calculator inputs, cookies, ads, and messages are handled.

Ready when you are

Start with your own usage, not a sales pitch.

The calculator is the best first stop. You can refine the estimate as you learn more about your roof, tariff, EV plans, or backup needs.

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