[kenhwang]

~400W/panel @ 20% efficiency is pretty much spot on for my home rooftop solar panel specs, so your math checks out there.

$0.02/kW does seem a bit low. Looking at my bill, it looks like I got paid ~$0.03/kW last month in California where my retail price is $0.17/kW off-peak. Looking at the current price charts for electricity, they're also currently ~$0.03/kW, so the numbers do check out since we're supposed to be paid the current wholesale price.

Electricity just doesn't cost all that much to generate, most of the cost comes from transmission and storage.

[sci_prog]

Thanks for sharing this! That was the exact info I was looking for, didn't know the wholesale price was so low. But it does make sense that transmission and storage is what is inflating the retail price.

[TheSpiceIsLife]

Here in Tasmania we can get between 0.08935 to 0.10 antipodean dineros per kWh for residential rooftop solar, with peak usage at around 0.35 and off-peak around the 0.17 antipodean diners per kWh. Max 10kW feed-in for residential, but you can have more installed to cover your own usage.

As far as I’m aware, commercial / industrial installations, and solar farms, get paid less per kWh.

Quick edit to fix a brain-fart, I doubt anyone read this prior anyways.

[grecy]

Here in BC Canada we don't get paid anything for feed-in, but we do get credit on our bill - so 1 kWh in during the day means I can use 1kWh at night without paying anything. We have 6.8kW on the roof, and it looks like over 12 months it will cover our needs.

It means I'll never have a bill, and if I get too much credit (negative bill), I'll just get a used electric car. I'm not unhappy with that situation.

[TheSpiceIsLife]

It’s not entirely different here, the feed-in is applied as a credit to your account. I suppose they’d have to pay out if pushed, I’m yet to know anyone who has received actual money though. I guess I’m about to find out, if my retailer ever fixes the issue with their billing system that’s preventing any of my solar data showing correctly / at all.

[danans]

> Electricity just doesn't cost all that much to generate

... from renewable resources.

Fossil energy can cost quite a bit to generate, but of course it comes with storage built in.