Upper North Island · North Island
Bay of Islands
85.9 MW Solar capacity (2026)
$332 Modelled bill (May 2026)
0.19 Retail HHI (Aug 2026)
Bay of Islands is in the Upper North Island on the North Island. Network operator: Top Energy.
Retail market concentration (HHI)
Herfindahl–Hirschman index of retailer ICP share by network region.
Loading chart…
Modelled residential electricity bills
Monthly total bill for a standard-use customer, $/month.
Loading chart…
Distributed solar capacity ranked by region
Installed solar capacity, kW.
Loading chart…