Household calculator

Locate a household
on the crossing curve.

Model a household’s HSI-C (Household Sovereignty Capacity). HSI-C estimates what qualifying household-controlled productive infrastructure could economically produce under explicit assumptions. It is modeled capacity, not observed household income.

HSI-C (Household Sovereignty Capacity — modeled) = NAPI (Net Autonomous Productive Income) / RECR (Residual External Cash Requirement — remaining household needs). A value of 1.00 is sovereignty parity: net income from autonomous work equals the household needs still purchased from the outside economy.

0.42 means modeled capacity equals 42% of the selected remaining household needs.

No account is required; inputs are processed transiently and are not retained.

ScenarioNot an income forecast or a credit decision.
01 Household
02 Productive stack
Sizing aid only. Your electric bill does not enter the HSI-C calculation directly; use the estimate to choose a solar-capacity scenario below.
5.0 kW
0 kW15 kW

About 13 panels at 400 W each. User-selected capacity scenario. Roof area, shading, structural constraints, permitting and interconnection feasibility are not evaluated in this beta.

35%
5%100%
03 Paid utilization

ScenarioPaid Utilization is the share of qualifying available productive capacity that actually finds paying demand. PU10, PU25, PU50 and PU75 are explicit sensitivity scenarios, not observed market utilization or forecasts. This calculator starts at PU25 for sensitivity analysis. No representative autonomous-work utilization distribution exists yet.

What this calculation is

A transparent capacity estimate.

This calculator evaluates HSI-C using Methodology v0.1 with every assumption explicitly classified. It models a household you describe; it does not observe one, establish address-level solar feasibility, or observe autonomous-work transactions.

Use it to explore how the HSI relationship behaves, and to see which constraint moves a household most.

Inspect definitions and sources