Feed-in tariffs vs. net metering vs. export payments — the three models

Three common regimes

1. Classic feed-in tariff — a fixed payment per exported (or sometimes generated) kWh, often with long contract terms.
2. Net metering — exports offset imports on a 1:1 or near-1:1 energy basis over a billing period (rules vary widely).
3. Export / smart export — a separate, usually lower, unit rate for spills to the grid.

Why it matters for calculators

Under true 1:1 net metering, self-consumption matters less for annual bills (timing still matters for network charges). Under low export rates, self-consumption and batteries dominate.

Always set the export price in WattPayback to match your regime — including zero if exports are unpaid.