I personally don't have this thing because, err, it's sunny 3 days a month. At most. And they only charge 8 cents a kW where I live.
Sorta same. During the summer? Oh they'd be GREAT. I could crank up the AC and not worry about it. As a bonus, one half of my roof points southward, so its always getting baked.
During the winter tho? It'd be next to useless. 3-4 months we get sunlight hours in the single digits. And since I have this fancy thing in my grid called a NUCLEAR POWER PLANT, I pay $0.06 per kWh. Meaning that there are two months, july and august, that my power bill goes over $100. August usually hits $200. Rest of the year? $40-60. During the winter it hits as low as $37 a month. $25 of that was required monthly fees.
So paying upwards of ten thousand dollars for a few kW of solar panels would, frankly, never pay for themselves. To make proper use, you'd need a battery system to use at night and charge with sun during the day, so and extra $3-5k minimum. And my provider wont do net metering unless you have a contract with them, and guess what they stopped approving a few years ago? It's "offered" sure, but good luck getting it.
It'd be different if I lived a couple hours south, had a few acres, and wanted to homestead as much as possible. Even with an EV I wouldn't use enough power to make them cost effective.
2.5% fixed for 30 years means that you will finish your mortage having paid $2.10 for every 1.00 you borrowed, so why are you raising your eyebrows at my original example of paying back $40K on a 25K loan over 20 years?
I'm not sure how you are getting that number. My mortgage is 4.125% fixed for 30 years, and according to my mortgage calulator, final payoff will result in my paying $40,000 in interest on a $63,600 loan. By your math I'd be paying over $120,000 in interest. The only way I get that math is if I include my insurance and tax escrow part of my mortgage payment, which doesnt count as interest.
Free mortgage calculator to find monthly payment, total home ownership cost, and amortization schedule with options for taxes, PMI, HOA, and early payoff.
www.calculator.net
I just ran it again. For 4.125%: total price: $80,000. Total loan amount: $64,000. Total interest: $47,663. Total payment: $111,663. To get to the $2.1 for every $1 you quote, you'd need a 6% interest rate. Not 2.5%. And, that's on 30 years. For 20 years, you need
8.6% to hit the $2.10 for every $1 borrowed level.
So if you had a $25k loan with a 20 year repayment, at a claimed 2.5% interest rate, and paid over $40k on it, you got ripped off HARD by somebody. (which, incidentally, happens a LOT with solar installation companies, every few years there's a news story around here of a solar company ripping people off with predatory loans full of hidden fees and interest).