8 questions to ask a solar installer
In short
Ask about MCS certification, system size, expected yearly output, the panel and inverter brands, warranties, scaffolding, battery options and how long the install takes. Get the answers in writing on each quote.
1. Are you MCS-certified?
You'll usually need an MCS certificate to be paid for the power you export.
2. What size system, and why?
Ask how they worked it out from your roof and your usage.
3. How much power will it make a year?
Ask for a month-by-month estimate for your roof.
4. Which panels and inverter?
Brands and models let you compare quotes like for like.
5. What warranties come with it?
Panels, inverter and workmanship often have different warranty lengths.
6. Is scaffolding included?
It's a real cost, so make sure every quote includes it.
7. Should I add a battery?
Ask what it would add to the price now, and later.
8. How long will it take?
Most installs take one or two days once the scaffold is up.
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