Heating Fuel Switch Breakeven
Switching a home's primary heating fuel from gas to electric is a bigger decision than a single equipment swap, and it lives or dies on your electricity rate relative to your gas rate. This tool solves for the exact electricity rate at which the switch clears your target payback, so you can compare it directly against your actual rate.
At your inputs, the electricity rate that hits a 10-year payback is $0.133/kWh.
| Required electricity rate | $0.133/kWh |
|---|---|
| Payback at your actual entered rate | 7.4 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 7.4 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
A full fuel switch is a bigger commitment than swapping one piece of equipment, and the homeowners considering it are usually trying to answer a broader question than any single quote can settle: is this the right direction at all, given how electricity and gas prices compare where I live.
How this is calculated
Given your net switching cost, your expected annual kWh impact, and a target payback period, this solves for the electricity rate that makes those three numbers work out exactly. It also shows your actual payback at the real rate you enter, so you can see where you stand relative to the threshold.
A worked example
With the defaults ($8,000 net cost, 6,000 kWh/year, 10-year target), the required rate is $0.133/kWh. At an actual entered rate of $0.18/kWh, the real payback is faster than 10 years, meaning the switch clears the target at that rate.
Common mistakes
A common mistake is applying today's gas price directly to future years without considering that fuel prices for both gas and electricity change over time. This tool holds rates constant by design; treat the result as a snapshot, not a forecast.
Limitations
This does not model a gas or electricity rate that changes over your ownership horizon, and it does not include one-time costs like removing gas service, which the gas service removal payback tool covers separately.
Common questions
How is this different from heating-fuel-specific tools like heat pump vs. gas furnace?
That tool compares two specific pieces of equipment on their own quoted costs. This one asks a more general question: at what electricity price does switching your primary fuel source make sense at all, independent of a specific quote.
Why does this use kWh savings instead of dollar savings?
Because the whole point is to solve for the rate itself. If dollar savings were an input, the rate would already be baked in and there would be nothing left to solve for.
What if I do not know my annual kWh savings figure?
A contractor's energy model or a home energy audit can estimate this more reliably than a guess. As a rough starting point, your current annual heating fuel cost divided by your fuel's price per unit gives an approximate energy usage figure to convert.
What if my utility uses time-of-use or tiered pricing instead of one flat rate?
Use your effective blended rate reflecting your actual usage pattern across the relevant periods, since a simple flat average can understate or overstate your real cost depending on when you use electricity. The utility-rates cluster's time-of-use tools break that math out in more detail if you want it.
Does this include the cost of removing or capping gas service?
No, only the net switching cost you enter. If a full switch means disconnecting gas entirely, add any capping or removal fee, and the effect of losing a gas-fueled appliance like a water heater, into your net cost figure.