I understand there is installation, maintenance and servicing costs, but shouldn’t the free power from the sun, wind and tidal eventually pay this off and start providing free power?
In: Engineering
Let’s look at it a different way:
You drive 20,000 miles a year.
You have a 20-year-old vehicle (value $10k) that is paid off, so the only expenses from it are fuel, maintenance, licenses, property tax, and insurance. It gets 15mpg, and it is missing a lot of new features. Fuel for 20k miles is 1,333.34 gallons.
So you buy a new vehicle for $30k. It gets 30mpg, so fuel for 20k miles is 666.67 gallons. You cut your fuel bill in half, but now owe $30k @ 4% and are paying $500/month on it, more in insurance & property tax, less on maintenance.
How long is it going to take to break even?
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