WorksheetPlanning limits applyLast reviewed April 29, 2026
Electrical reference chart
ROI Payback Chart
Use this worksheet after the calculator result to record investment cost, annual benefit, operating cost, simple payback, ROI percent, cash-flow assumptions, and sensitivity notes.
Quick reference table
An ROI payback chart is a calculator-led planning worksheet. It keeps cost, benefit, payback, and cash-flow assumptions visible before a project is compared or approved.
ROI payback worksheet
| Item | Record from calculator | Follow-up |
|---|---|---|
| Investment | Initial cost and net cost basis | Verify scope and exclusions |
| Benefit | Annual savings or revenue | Separate measured and assumed values |
| Metrics | ROI percent and payback | Compare with project threshold |
| Sensitivity | Rate, runtime, life, maintenance | Run best and conservative cases |
ROI decision review lanes
| Decision lane | Record on worksheet | Why it changes the comparison |
|---|---|---|
| Cash-flow timing | Upfront cost, recurring benefit, start month | Payback changes when savings start later than spending |
| Discount or hurdle basis | Discount rate, target ROI, owner threshold | Projects should be compared against the same decision rule |
| Maintenance and salvage | O&M change, replacement value, residual value | Lifecycle items can change the net benefit |
| Risk case | Conservative, expected, upside inputs | One ROI result hides sensitivity to assumptions |
Formula basis
ROI percent = net benefit / investment cost x 100.
- Investment cost is the project cost basis used by the calculator.
- Net benefit is the annual or lifetime benefit after operating costs as entered.
- Simple payback is cost divided by recurring annual benefit.
- Sensitivity notes identify drivers such as rate, hours, project life, and maintenance.
Worked examples
Assumptions. Balanced load and line-to-line voltage assumptions behind this chart.
- ROI depends on cost basis, benefit timing, operating conditions, finance assumptions, and project life.
- The worksheet supports comparison and does not provide investment, accounting, or tax advice.
Code and standard notes. Planning limits that should be checked before final equipment selection.
- Use this chart as a comparison worksheet; verify project scope, utility and operating assumptions, maintenance inputs, owner hurdle rates, finance review, and program requirements before approval.
How to use this chart
Worksheet checklist. Record source basis, review gaps, and assumptions before using the chart result.
- Capture inputsRecord cost, savings, revenue, operating cost, life, and discount or hurdle assumptions.
- Capture metricsWrite simple payback, ROI percent, net benefit, and cash-flow notes.
- Capture decisionList approval threshold, reviewer, sensitivity cases, and open risks.
Common mistakes to avoid. Review these before turning chart current into an equipment decision.
- Comparing ROI values that use different cost or time bases.
- Presenting payback without noting project life and maintenance assumptions.
- Ignoring cash-flow timing, discount basis, salvage value, or risk case when comparing projects.
Frequently asked questions
These answers explain how to use the chart without turning a quick reference into a final design decision.
Why keep payback and ROI together?
Payback shows recovery time, while ROI shows return relative to cost. Both need the same cost and benefit basis.
What should be checked before approval?
Review cost scope, benefit evidence, operating assumptions, project life, maintenance, financing, and risk.
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