Pita Te Hori Centre District Energy Scheme
Ngāi Tahu Property Limited
Ngai Tāhu Property Limited’s Pita Te Hori Centre development is a mixed use precinct with a mix of commercial and residential buildings that set the benchmark for post-earthquake Christchurch. The initial development consists of two commercial office buildings, and separate multi-story carpark building, with anchor tenants in the Ministry of Education, two other Government agencies, EY and Aurecon.
CDEC has partnered with Ngāi Tahu to provide a centralised District Energy Scheme solution for the Pita Te Hori Centre precinct. The District Energy Scheme solution supplies thermal energy, in the form of heating and cooling, from a central energy centre to the first two office buildings with capacity to supply the full precinct once completed. At its core, high efficiency ground source heat pumps utilise Christchurch’s aquifer systems to provide efficient and sustainable space heating and cooling to the site.
The Pita Te Hori Centre District Energy Scheme is the first of its kind in Christchurch, displacing traditional distributed building services systems with a high quality, efficient and cost effective centralised energy supply solution.
- Customer: Ngāi Tahu Property Limited
- Site: Pita Te Hori Centre, Central Christchurch
- Operational: May 2017
- Technology: 3 off Clivet Ground Medium heat pumps with a total installed capacity of 1,200 kW heating – with space for a final installed capacity of 2,000 kW
- Heating Supply: Up to 1,700,000 KWh p.a. of 45°C Low Temperature Hot Water for building space heating
- Cooling Supply: Up to 1,500,000 kWh p.a. of 7°C Chilled Water for building space cooling
- Aquifer Water Abstraction: From the Wainoni aquifer at a depth of 120 m
- Aquifer Water Reinjection: Into the Riccarton aquifer at a depth of 30m
- Piping: Over 750 m of large diameter distribution piping for heating, cooling and aquifer water
- Avoided Emissions: As much as 70 tCO2e p.a.