Geothermal ROI CalculatorBreak-even year, 30-year savings, monthly payment estimate
I get asked “is geothermal worth it?” every week. Here is my honest answer: it depends entirely on what you are replacing, what county you are in, and how long you plan to own the home. I built this calculator to show you the exact math. Enter your situation and you will see the break-even year, total 30-year savings, and whether the numbers make sense for you. No sugar-coating.
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I do a free Manual J load calc, exact rebate verification, and a written savings projection for every geothermal estimate.
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The Honest Case for Geothermal in Oklahoma
Oklahoma is one of the best states in the country for geothermal return on investment. Here is why: we have long cooling seasons (May through October) and legitimate winter heating loads. That means your geothermal system earns its keep 10 months a year. Our ground temperatures stabilize around 60 to 65 degrees Fahrenheit, exactly the sweet spot for ground-source efficiency. Oklahoma clay drills well and holds thermal energy well. And the CKenergy rebate in 10 counties is the most generous co-op rebate program in the region. Background reading: geothermal heat pumps. Full details: Oklahoma geothermal rebates 2026.
Where geothermal does NOT make sense: if you are replacing a new, high-efficiency air-source heat pump and you plan to move in five years. The numbers will not work. I will tell you that up front at no charge.
What is a realistic geothermal payback period in Oklahoma?
With the CKenergy rebate ($2,000/ton, max $24,000) in Canadian or Blaine County, typical payback runs 7 to 10 years for homes replacing propane or electric resistance. With no rebate, it is 12 to 18 years. If you are replacing a newer efficient heat pump, the savings are smaller and the payback is longer. I give you the real numbers before you make any decision.
Does geothermal increase home value in Oklahoma?
Geothermal systems do tend to increase appraisal value, though not dollar-for-dollar. The more reliable financial case is the energy savings. Appraisers are getting better at capturing it, but the primary value is in the monthly savings, not the resale premium. If you are planning to sell in under 5 years, geothermal is probably not the play.
What utility rebates are available for geothermal in Oklahoma?
Active 2026 programs: CKenergy $2,000/ton (max $24,000) in 10 counties. OG&E $1,000/ton in Garfield and Oklahoma Counties. OEC $400-$700/ton in Logan County. Cimarron Electric $600 flat in Kingfisher area. Federal 25D tax credit expired December 31, 2025, not available for 2026 installs. Oklahoma utility rebates are fully active and I handle all paperwork.
Is geothermal still worth it without the federal tax credit?
Yes, in most Oklahoma counties. The CKenergy rebate alone is worth more than the old 30% federal credit was on a $20,000 system. The math changed when 25D expired, but not dramatically in the counties with strong co-op programs. In areas with no utility rebate, the payback period is longer, still worth it if you plan to stay 12-15+ years.
Free Geothermal ROI Analysis
I will give you a written estimate: exact rebate, installation cost, annual savings projection, and break-even year. No pressure. If the numbers do not work, I will tell you that too.
Call Dave: 405-375-4822
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