There are TONS of incentives to increase energy efficiency.

Most local electric and gas companies will do free energy audits. Many will offer rebates if you install tankless water heaters, heat pumps, and insulation. Installers get kickbacks from manufacturers and tax credits if you buy higher efficiency equipment. Lenders will give you 0% loans to fund it all. The Feds and many States offer tax credits for all of the above.

I've done every single thing on this list in the last 5 years, some in Texas, some in Indiana.