On: Solar Just Hit a Record Low Price in the U.S

[toomuchtodo]

ROI for cash invested in your solar install is greater than 4% in almost every state.

[gibybo → toomuchtodo]

I didn't say it wasn't. We're talking about the cost per kWh which depends on the interest rate that you can finance it with, not your ROI.

[toomuchtodo → gibybo]

You should always be paying cash whenever possible for the remaining system cost (after incentives). Failing that, you should be able to get a HELOC, home equity loan, or roll the system cost into a first mortgage at low (~4%) fixed rates (that might also be tax advantaged).

Higher interest rates would change the equation, but I don't know of people who are using high interest loans (like an unsecured loan) to finance residential solar.