Net Metering vs Feed-in Tariff: Key Structural Differences
The single most important structural difference is how the export rate is determined. Under net metering, your export credit is tied to the retail rate — which fluctuates over time as utility rates rise. That linkage is actually a long-term advantage for homeowners, because US retail electricity prices have risen at an average rate of 2.7% per year over the past two decades according to EIA data. Every time your utility raises its rates, your implicit net metering credit rises with it, improving your solar economics automatically without any action on your part.
Under a feed-in tariff, the export rate is fixed by contract or regulation, often for 10 to 20 years. Early adopters who locked in high rates — like the UK’s 41.3p scheme or Australia’s Queensland Solar Bonus Scheme at 44 cents per kWh — did extremely well. Late adopters who enter FiT programs today at 5–8 cents do not benefit from future retail rate increases on their exported power, which is a structural disadvantage over a 20-year system life.
A second important difference is administrative simplicity. Net metering requires only a single bidirectional meter and no separate export metering contract. Feed-in tariffs often require a dedicated export meter and a separate payment arrangement with a licensed supplier, which adds administrative friction and occasionally delays payments by several billing cycles.
There is also a meaningful self-consumption incentive difference. Net metering does not particularly reward or penalise shifting consumption to daytime; the credit rate is the same regardless of when you self-consume versus export. Feed-in tariffs at rates below retail, by contrast, create a strong incentive to shift loads — running dishwashers, washing machines and EV charging — to solar generation hours. Oregon and several other states with time-of-use net metering programs are beginning to hybridise the two models, paying higher credits during peak demand hours and lower credits during off-peak periods, blending the demand-management signals of a FiT with the administrative simplicity of net metering.
Understanding how your time-of-use rate structure interacts with solar export timing can uncover meaningful hidden savings. A time-of-use savings calculator lets you model exactly which consumption pattern maximises your bill reduction under whichever export policy applies in your state.