Electrification Operating Cost Delta
Before pricing a specific project, it can help to see the shape of the savings: how much does your annual operating cost actually change by going electric, and is that change, discounted over time, worth the project cost.
At your inputs, the operating-cost change from electrifying has an NPV of -$6,139 over 10 years, with a discounted payback of no discounted payback within this horizon.
| Net cost after confirmed incentives | $10,000 |
|---|---|
| Annual savings | $500 |
| Net present value | -$6,139 |
Breakeven: No discounted payback occurs within the selected horizon.
- This uses planning estimates you entered, not a contractor quote or guaranteed savings.
- A positive NPV does not guarantee the actual outcome; it reflects your entered assumptions discounted at your chosen rate.
What this also tells you: A positive NPV means the option is worth more than its cost even after discounting future savings back to today; a negative NPV means the upfront cost outweighs what the savings are worth today.
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
Homeowners early in considering electrification often want a directional answer before committing to a specific contractor or quote, and a discounted operating-cost view gives a more conservative starting point than a simple payback estimate.
How this is calculated
This discounts the annual operating-cost change back to today's dollars over your ownership horizon and nets it against your project cost to produce an NPV and a discounted payback year.
A worked example
With the defaults ($10,000 net cost, $2,400/year mixed-fuel cost dropping to $1,900/year, 10-year horizon, 5% discount rate), the annual savings is $500 and the NPV lands clearly negative at these defaults, meaning the project needs a lower cost, a bigger operating savings, a confirmed incentive, or a longer horizon to clear on this conservative discounted basis.
Common mistakes
A common mistake is treating a positive simple payback as proof the project is worthwhile without checking the discounted view, which can tell a more cautious story for a longer-horizon project.
Limitations
This does not include a confirmed incentive; see the incentive impact version of this tool if you have one to apply.
Common questions
How is this different from the whole-home electrification payback tool?
That tool uses a simple, undiscounted payback. This one discounts future savings to today's dollars and reports NPV, which is a more conservative and arguably more honest view for a longer ownership horizon.
Where do I get a realistic fully-electric annual cost estimate?
A contractor's energy model, or your own research into typical electric equivalents for your specific appliances and climate, is more reliable than a generic percentage estimate.
Should I use this before or after getting a project quote?
Before is fine for a rough gut check. Once you have a real quote, re-run this or the whole-home payback tool with your actual net cost for a more grounded answer.
Why would NPV come out negative even with real annual savings?
A discounted view treats a dollar saved years from now as worth less than a dollar spent today, so a project with a high upfront cost and modest annual savings can show a negative NPV even though its simple payback looks reasonable. That is the more conservative, and often more honest, read for a longer ownership horizon.
What discount rate should I use here?
A common starting point is your own opportunity cost of capital, what you could otherwise earn investing that money. See the financing and discount rates resource for how to pick one that fits your situation.