Solar and battery only earn what your dispatcher knows how to capture. Basis times exports for peak-rate windows, slows the cycles that age your battery, and exposes circuit-level control through Home Assistant and the Basis API, so a five-figure asset earns like one.
Solar & battery owners lose an estimated $1,064 every year to mistimed dispatch and excess battery wear.
NZ journey modelling · import-export timing + battery longevity
Where the yield lives
Once solar and battery are on the roof, the difference between average and exceptional ROI is *what runs the dispatcher*. Most installers ship with simple time-of-day rules. Basis runs tariff-aware, demand-aware, battery-aware logic on every cycle, and exposes the data so you can build your own.
Battery discharges into the home; surplus exports to the grid at peak rate. Simple-rules systems would be charging from solar that isn't there.
Don't sell cheap. Don't buy dear. Midday exports earn the worst price. Basis shifts loads into your sunshine and holds exports for peak-rate windows.
Fewer cycles, gentler discharge — battery reaches end-of-warranty capacity in the fifteenth year instead of the eighth.
Don't burn out your battery early. Every unnecessary cycle shaves a year off its life. Basis times charging around real demand, so it cycles less.
In-app orchestration will keep improving. For now, the circuit control and live data your automations need sit behind these two open surfaces.
Wire it into the stack you already use. Circuit control and live data through Home Assistant and the Basis API. In-app orchestration keeps improving.
10-year ROI gap
Both quietly. Both for years. Both compound.
Modelled against alpha-programme data for a 6 kW solar + 10 kWh battery household on a NZ time-of-use tariff. Numbers pending finance sign-off before launch.
The other doors
ROI is one stage of the journey. The bill you're already paying, and the next project decision waiting in the wings, both live in the same panel.
Door · Lower electricity costs
What's still leaking on your import side.
Even with solar, ghost loads and the wrong retail plan are quietly costing you. The Basis bill audit doesn't stop at generation.
Walk through Lower billsDoor · Avoid upgrades
The next project decision, sized properly.
Second battery? Heat pump? Second EV? The data Basis already has on your home means the next quote comes back to your actual profile, not someone's safety buffer.
Walk through Avoid upgradesAn asset that earns like one
For homes already on solar+battery, Basis is the missing layer that turns simple-rules dispatch into peak-rate, demand-aware, longevity-aware dispatch, without you having to manage it.