Interactive sizing tool

How many reactors would your load require?

Use a transparent planning calculation to compare unit counts across representative designs. It is a scale tool, not a siting, reliability, licensing or engineering model.

Continuous electrical load (MW)

Planning capacity factor (%)

Planning assumption, not a guarantee for any reactor or project.

Reserve margin (%)

Household electricity benchmark (kWh/year)

Required nameplate—

Annual delivered energy—

Household-energy equivalent—

Designs compared11

How many units?

Formula: required nameplate MW = continuous load × (1 + reserve margin) ÷ planning capacity factor. Unit count is rounded up. This intentionally does not model outages, grid constraints, redundancy rules, heat demand, ramping, transmission or project-specific performance.

Data snapshot verified against primary or authoritative sources: 21 September 2026. Reactor programmes and deployment schedules can change.