Solar Savings Calculator

Find the right solar setup for you. Use Simple to get started, Advanced to compare providers in detail.

Configuration

Location

Electricity Provider

Plan Type?Standard: For households using over 8,000 kWh/year. Higher daily charges but lower per-kWh rates — better for larger households.

Low User: For households using under 8,000 kWh/year (9,000 kWh in lower South Island). Lower daily charges but higher per-kWh rates.

PV System Size: 6 kW?PV stands for photovoltaic — the technology that converts sunlight into electricity. This is the total generation capacity of your solar array on the roof, not battery storage. A typical NZ home installs 6–10 kW.

6 kW22 kW

Consumption: 500 kWh?

300 kWh2000 kWh

Hour of Power

Some providers offer a free electricity window during the day. Enable this and set the time range to estimate how much you could save by shifting usage into that window. Assumes around 3 kWh of shiftable load (e.g. hot water, appliances, EV) per free hour.

Choose your details to see results

Pick a location, electricity provider and plan type to see your personalised solar savings estimate.

All three are needed to compute realistic numbers against the right tariffs.