New Zealand will allocate up to $60 million from the Regional Infrastructure Fund to explore supercritical geothermal technology (SCGT), aimed at securing the nation’s future energy needs. Regional Development Minister Shane Jones and Science, Innovation, and Technology Minister Judith Collins announced this initiative, emphasizing the importance of a secure and resilient energy supply for economic recovery and business confidence.

Geothermal energy, sourced from extremely hot rock heated by magma, currently involves wells drilled to about 3.5km deep. Scientists believe that drilling deeper, up to 6km, could yield significantly more energy. SCGT could produce up to three times more energy than current geothermal methods, potentially revolutionizing energy production both in New Zealand and globally.

Initially, $5 million will be used to design and estimate the cost of drilling the first of three deep wells in the Taupō Volcanic Zone. Local iwi and hapū will be involved in the planning process. Understanding the feasibility of the necessary engineering technology is essential before further funds are allocated.

The project will be led by GNS Science and the Ministry of Business, Innovation & Employment (MBIE). The Taupō Volcanic Zone is ideal for SCGT due to its substantial geothermal heat sources and thinner Earth’s crust. Increased use of geothermal energy could reduce emissions and reliance on fossil fuels, aligning with New Zealand’s renewable energy goals.

Hydroelectric power currently provides 60% of New Zealand’s electricity, but reliance on it can be vulnerable to periods of low rainfall. The SCGT project is a long-term effort, with potential drilling starting by the end of 2025 and full deployment between 2035-2040. If successful, this could significantly enhance New Zealand’s energy security and sustainability.

Poligennews

The Potential of Supercritical Geothermal Technology