Hydro Generation
Hydro generation accounts for over 52% of New Zealand's total generating capacity (New Zealand Energy Data File 2009) and is an integral part of Genesis Energy's generation capabilities. Like wind power generation, hydro power has a minimal impact on climate change in that no fuel is burned to create electricity, so no greenhouse gases are emitted into the atmosphere as a result.
Genesis Energy owns three hydro generation schemes located in the North Island which include the Tongariro Power Scheme with Tokaanu and Rangipo power stations that have a combined output of 362MW; the Waikaremoana Hydro Scheme with Tuai, Piripaua and Kaitawa power stations that have a combined output of 138MW, and Kourarau Hydro Scheme which has an output of 1MW. Genesis Energy has completed constructing a 2MW mini-hydro project at the Mangaio outfall within the Tongariro Power Scheme.
Genesis Energy has dedicated staff who manage the process of gaining, implementing and managing resource consents to allow the continued operation of the power schemes as well as the consultation process, monitoring and management of environmental effects.
How is hydro power made?
Unlike thermal generation, where fuel (coal, and/or gas) is burned to make steam which turns the turbines, hydro generation uses the pressure and flow of water:
- to turn the turbine runner
- which turns the generator
- that produces electrical power
- a transformer boosts the voltage for the national electricity grid.
Factsheet: Hydro Generation
