Electricity Rate Needed for Electrification to Pay Off
Rather than testing one project quote against one assumed rate, this works backward: given the project's cost and expected energy impact, what electricity rate makes it hit your target payback, so you can compare that threshold directly against your actual rate.
At your inputs, the electricity rate that hits a 10-year payback is $0.167/kWh.
| Required electricity rate | $0.167/kWh |
|---|---|
| Payback at your actual entered rate | 9.3 years |
- This uses planning estimates you entered, not a contractor quote or guaranteed savings.
- It solves for the electricity rate that meets your target payback; it does not predict future rates.
What this also tells you: Your actual entered rate gives a payback of 9.3 years; the rate above is only the threshold for your stated target, not a forecast.
This is a planning estimate based on your entries. It does not size equipment, determine electrical or building-code compliance, verify incentive eligibility, or replace a contractor quote or professional energy audit.
Why this decision comes up
Electrification project economics are unusually sensitive to the electricity rate a household actually pays, which varies widely by region and utility. This tool isolates that sensitivity directly instead of burying it inside a single fixed-rate estimate.
How this is calculated
Given your project's net cost, expected annual kWh impact, and a target payback period, this solves for the electricity rate that makes those three numbers work out exactly, and shows your actual payback at the real rate you enter for comparison.
A worked example
With the defaults ($10,000 net cost, 6,000 kWh/year, 10-year target), the required rate is $0.167/kWh. At an actual entered rate of $0.18/kWh, the real payback comes in faster than 10 years, meaning the project clears the target at current prices.
Common mistakes
A common mistake is applying a national average electricity rate instead of your own utility's actual rate, which can differ substantially and change whether a project clears your target.
Limitations
This does not model a rate that changes over your ownership horizon, and it does not verify your annual kWh impact estimate, which should come from a contractor's energy model for accuracy.
Common questions
How does this apply across a whole electrification project rather than one appliance?
Enter the combined net cost and combined annual kWh impact of whatever scope of project you are evaluating, whether that is one appliance or several. The math works the same regardless of scope.
What if my rate is well below the required threshold?
That means the project does not clear your target payback at current prices. You could extend your target payback, wait for a lower project cost or a confirmed incentive, or accept a longer payback if other factors matter to you.
Does this account for rates that change over time?
No, it holds your rate constant to solve for the threshold. Treat the result as a snapshot against today's numbers, not a forecast of future electricity prices.
Is this the same calculation as the HVAC repair threshold tool?
The underlying math is the same, solving for a breakeven rate, but this one is scoped to a broader electrification project rather than a specific repair-versus-replace decision. Use whichever matches the actual choice in front of you.
What if my project involves several appliances with different lifespans?
Enter the combined net cost and combined annual kWh impact across whatever scope you are evaluating. If the appliances have very different paybacks on their own, it can also help to run each one through its own dedicated tool.