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.
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