One of the questions that lands in my inbox almost every day is this:
“Hey Finn – I’ve been made a fantastic offer on a shiny new solar power system for my home. It is heaps cheaper than every one else on the market. Is it too good to be true or a genuine bargain???”
Here are 13 Solar Questions to quickly ask either yourself or the solar sales dude that will help you decide.
Questions for the sales guy:
Question #1: Has your company ever been reprimanded for your advertising practices?
Question #2: How many of your installations have ever failed a government inspection?
Question #3: Is the CEC accredited installer present for the entire install?
Question #4: How much do you pay for a subcontracted 1.5kW install? ($900 is the minimum that should be paid for a quality solar installation in my humble opinion)
Question #5: What is the product warranty on the solar panels? (this is not the power output warranty). Is is at least 10 years? Is the warranty void if I don’t pay you to regularly “service” my solar system?
Question #6: What 3rd party evidence can you give me that these solar panels are any good? (e.g. Magazine Tests, my humble Solar Panel Comparison Tool)
Question #7: What 3rd party evidence can you give me that this solar inverter is any good?
Question #8: What kind of solar power system have you got on your roof kind sir? (Don’t buy a shirt from a naked man!)
Questions to ask yourself: (crikey – I sound like your therapist now!)
Question #9: What happens if you Google “youtube [solar company name]” ?
Question #10: What happens if you Google “whirlpool [solar company name]“?
Question #11: What happens if you Google “whirlpool [solar panel name]“?
Question #12 What happens if you Google “whirlpool [solar inverter name]“?
Question #13: When was the last time you bought the absolute cheapest option available - in any product or service category - and it made you happy for years to come?






Hi Finn,
Thanks for putting up a whole set of questions from solar customers. I can’t say for sure about the other ones, but in answer to question #5 “what is the product warranty on the solar panels?” I am pretty much confident that the photovoltaic solar modules manufactured by the most reputed companies usually comes with 25 year limited power output warranty.
thank finn you are the best , real person , real knowledge.. f%^k solar im stayin with the grid…
Hey Finn,
I have been quoted $6600 for a 3 kw solar package including… Trina Honey 250w
Multicrystalline panels with a Power One Aurora PVI 3.0 inverter from Energy Aware…Sounds
like a good deal, would like your comments…
Cheers Ben
Hi Ben,
That’s a pretty good deal IMHO. Great panels – good inverter.
FInn