Argosy Property Ltd’s internal retrofit of Te Puni Kokiri House in Wellington has won the building the Opus International Consultants public sector award at the annual Energy Efficiency & Conservation Authority awards for its $7.9 million improvement in value and 30% reduction in energy use.
The building has a 4.5 NabersNZ energy efficiency rating as a result of its retrofit – one of the best ratings for a heritage building in New Zealand – on top of a 5 green star built rating.
The award last week demonstrated that even New Zealand’s oldest heritage buildings can get a new lease of life and be transformed into high performing green buildings.
Te Puni Kokiri House, at 143 Lambton Quay, was also highly commended in the Smart Energy Solutions small-medium energy user category.
Highlights of Te Puni Kokiri House’s retrofit:
- The value of the building has improved by $7.9 million
- $80,000/year of energy savings now goes back into the public purse as all 11 floors are occupied by Te Puni Kokiri (the Ministry of Maori Affairs)
- Energy audits before & after refurbishment showed energy use had reduced from 205 kilowatt hours of energy/m²/year to 138kWh, an improvement of more than 30%
- Te Puni Kokiri House was the first building in New Zealand to use electro-commutated fan coil units, which improve control of air-conditioning
- 90% of construction waste was re-used or recycled, and water use has been reduced by 29%.
Several NZ Green Building Council members were also finalists in the Energy Efficiency & Conservation Authority awards. Laminex NZ was commended in the Waikato University innovation category and the Trustpower renewable energy category, Christchurch City Council was commended in the Opus public sector category, Victoria University’s Victoria energy initiative was highly commended in the Fujitsu General NZ community category, and Auckland Council organisation Panuku Development Auckland’s sustainability manager, Viv Heslop, won the Vector Energy leadership award.
NabersNZ is based on the national Australian built environment rating system (Nabers), which has been used to rate building energy performance for a decade. NabersNZ is the industry standard for benchmarking & improving office building energy performance in New Zealand. It’s licensed to the Energy Efficiency & Conservation Authority and is administered by the NZ Green Building Council. The Energy Management Association of NZ adapted it for New Zealand conditions.
Attribution: Green Building Council release.