Line052 and if that stream has some flow and drop you stick in a micro generator.
When I started in the hydro bussiness it was a government service that worked on a break even principal with all people able to "live better electrically". Starting next year we will be subsidizing the natural gas customers so they can have energy audits which result in grants so they increase insulation, replace furnaces etc....
Our bill for two country houses on the same meter, 4-5 people total has been running $500/winter month for the past two years. Our electric water heaters are preheated by the furnaces and locked off during peak billing hours.