Estimate how long a demand response investment may take to recover its upfront enrollment and control costs. Enter expected program payments, event earnings, avoided demand charges, and annual operating expense. The result shows simple payback, net annual benefit, return on cost, and cumulative five-year value so a facility manager can compare participation economics before accounting for financing or taxes.
A shorter payback indicates that recurring net benefits recover the enablement cost sooner. The estimate is simple payback and does not discount future cash flows.
Program dispatch frequency, performance penalties, baseline methodology, and tariff rules can materially change realized value.
With $25,000 upfront, $12,000 in capacity payments, $6,000 in event earnings, $5,000 in avoided charges, and $3,500 in annual cost, net benefit is $19,500 and simple payback is 1.28 years.
Both are treated as annual gross benefits, then recurring program costs are subtracted to obtain net annual benefit.
The calculator reports that payback is not achieved because the annual net benefit is zero or negative.
No. The estimate is a pre-tax simple-payback calculation. Add taxes, financing costs, incentives, and contract-specific charges separately when they apply.
Yes. Decimal inputs are supported, and the calculator keeps full precision until results are displayed.
Zero is accepted where it represents a valid operating condition. A value that would make the formula undefined triggers an input message instead of showing an invalid result.
| Variable | Meaning | Unit |
|---|---|---|
| C₀ | Upfront enablement cost | USD |
| B | Gross annual benefits | USD/year |
| O | Recurring operating cost | USD/year |
| B − O | Net annual benefit | USD/year |