This virtual power plant system sizing calculator turns operational or financial assumptions into a transparent planning estimate for a virtual power plant. Enter values that describe your own portfolio, review the main result and supporting metrics, and use the formula section to confirm how each input is applied. The tool runs entirely in your browser and is intended for early-stage comparison, budgeting, and scenario review rather than contractual settlement or final engineering design.
Base power = target energy ÷ duration
Required enrollment = base power ÷ availability × (1 + planning margin)
The result is the nominal portfolio power to enroll so the target dispatch can be met under the entered assumptions.
This planning calculation does not model feeder constraints, telemetry rules, resource correlation, or dispatch ramp rates.
To deliver 120 MWh over 3 hours, base power is 40 MW. At 90% availability with a 15% margin, required enrollment is 51.11 MW.
Yes. Replace the defaults with values from the same operating period and keep every unit consistent.
Use the share of capability expected to be available when requested. Do not apply it twice if another input already includes outages or opt-outs.
Zero is accepted where it represents no energy, events, incentives, cost, or reserve. A denominator such as capacity, duration, or required performance must be greater than zero.
Enter percentages as displayed values, such as 90 for 90%. The calculator converts them to decimals internally.
No. It is a transparent planning estimate and does not capture every contract, network, behavioral, financing, or operational constraint.
| Variable | Unit or role |
|---|---|
| Target energy | MWh per dispatch |
| Duration | Hours |
| Availability | Percent |
| Planning margin | Percent |