Fast-Track Approval Secures Future of Bay of Plenty Hydro Scheme Powering Nearly 25,000 Homes

The Kaimai Hydro-Electric Power Scheme has been operating in various forms for at least half a century and remains a cornerstone of the Bay of Plenty’s energy security.

New Zealand's renewable energy transition has received another major boost after the Government granted Fast-track approval for the continued operation of the long-running Kaimai Hydro-Electric Power Scheme in the Bay of Plenty — a critical regional energy asset supplying nearly one-third of Tauranga's electricity demand.

Infrastructure Minister Chris Bishop and Regional Development Minister Shane Jones confirmed the approval today, describing the decision as a significant step toward strengthening New Zealand's renewable electricity network, supporting regional economic resilience, and advancing the country's emissions reduction targets.

The approval marks the 23rd project consented under the Government's Fast-track process and ensures the continued operation of one of the Bay of Plenty's most strategically important hydro-electric generation systems.

Manawa Energy Limited lodged its substantive application in September 2025 seeking re-consenting approval for the existing hydro-electric scheme and associated infrastructure located in the Kaimai Range.

The approval process took approximately five and a half months following the commencement of the independent expert panel review.

Critical Renewable Energy Asset for the Bay of Plenty

The Kaimai Hydro-Electric Power Scheme has been operating in various forms for at least half a century and remains a cornerstone of the Bay of Plenty's energy security.

The hydro scheme currently generates an average of 169 gigawatt-hours (GWh) of renewable electricity annually — enough to power approximately 24,600 households each year.

Officials say the scheme contributes around 32 percent of Tauranga's total electricity demand, underlining its strategic importance to one of New Zealand's fastest-growing urban regions.

Infrastructure Minister Chris Bishop said maintaining reliable renewable generation capacity is essential as electricity demand continues to rise nationwide.

"The Kaimai Hydro-Electric Power Scheme involves the continued operation of the existing hydro-electric generation scheme and associated water and generation infrastructure in the Kaimai Range," Mr Bishop said.

"The scheme generates an average of 169 GWh of electricity per year, equivalent to the electricity needs of approximately 24,600 households, and contributes around 32 per cent of Tauranga's electricity demand."

Energy analysts say the approval is particularly significant as New Zealand works to increase electrification across transport, industry, and residential sectors while reducing dependence on fossil fuels.

Major Contribution to Emissions Reduction Goals

The Government says continued operation of the hydro scheme will prevent a substantial increase in carbon emissions by avoiding the need for additional fossil fuel-based electricity generation.

According to official estimates, the project is expected to avoid approximately 26,693 tonnes of CO₂ emissions annually.

That reduction is considered highly significant in the context of New Zealand's broader climate commitments and efforts to transition toward a low-emissions economy.

Hydro-electric generation remains one of the country's most important renewable energy sources, accounting for a large proportion of national electricity production.

Officials say retaining existing renewable generation assets is just as critical as developing new energy projects, particularly as electricity demand accelerates.

"The continued operation of the scheme is expected to avoid an increase in emissions of around 26,693 tonnes of CO₂ per year, supporting New Zealand's emissions reduction goals," Mr Bishop said.

The Kaimai approval comes amid increasing national concern around energy security, winter electricity supply pressures, and the long-term reliability of renewable generation infrastructure.

Fast-Track Process Accelerating Infrastructure Certainty

Regional Development Minister Shane Jones said the Fast-track process is helping remove delays and uncertainty surrounding nationally and regionally important infrastructure projects.

"Reliable renewable electricity generation is critical to supporting economic growth and regional resilience," Mr Jones said.

"This scheme has been operating in some form for at least 50 years and continues to play a vital role in supplying electricity to the Bay of Plenty community."

"Fast-track is helping ensure important infrastructure projects like this can continue operating with greater certainty and efficiency."

Supporters of the Fast-track system argue the process is becoming increasingly important for projects tied to energy generation, transport, water infrastructure, and climate resilience.

The Kaimai project progressed through the independent expert panel process in just over five months, with the panel releasing its draft decision and proposed consent conditions on 24 April 2026.

Government officials say the process maintains environmental oversight while significantly reducing consenting timeframes that previously created delays for major infrastructure investments.

Existing Infrastructure to Continue Supporting Regional Growth

The approved project primarily focuses on re-consenting the existing hydro-electric infrastructure rather than constructing entirely new generation assets.

The consent covers:

• Existing hydro-electric generation facilities

• Water intake and conveyance systems

• Associated operational infrastructure

• Ongoing renewable electricity production activities

Industry observers say the decision highlights a growing recognition that maintaining ageing but efficient renewable assets is becoming increasingly important as New Zealand modernises its electricity network.

The Bay of Plenty region continues to experience strong population growth, industrial expansion, and increasing electricity demand, placing additional pressure on generation and transmission systems.

Energy experts say hydro-electric schemes such as Kaimai provide valuable baseload renewable generation that helps stabilise the national grid while complementing intermittent renewable sources like wind and solar.

Renewable Infrastructure Becomes Central Economic Priority

The approval also reflects the Government's broader push to accelerate infrastructure projects considered essential to economic productivity and energy resilience.

New Zealand's electricity demand is forecast to increase substantially over coming decades as industries and households transition away from fossil fuels toward electrified systems.

Officials say ensuring long-term certainty for existing renewable generators will be critical to maintaining supply reliability during that transition.

The Kaimai Hydro-Electric Power Scheme is now expected to continue operating as a major contributor to the Bay of Plenty's renewable energy network while supporting regional development and national emissions reduction efforts for years to come.