There are about 3844 people per square mile in Houston, so that's $650 per person, amortized over at least 20 years, which would increase the monthly power bill

There are about 3844 people per square mile in Houston, so that's $650 per person, amortized over at least 20 years, which would increase the monthly power bill by about $2.70 per person (~ $10 / subscriber?) I'd guess that's less expensive than throwing out everything in the fridge / freezer every few years.