The current proposals to reform electricity sector
Future options for the electricity system in New Zealand
25/5/10 Doug Clover
Doug Clover Otahuhu/Southdown (Thermal) Huntly (Thermal) New Plymouth / TCC (Thermal) Waikato system (Hydro and Geothermal) Waitaki system (Hydro) Clutha system (Hydro) Manpouri (Hydro) Adapted from Transpower 2006 25/5/10 The New Zealand grid
Structure of the electricity sector Ministry of Energy Doug Clover 25/5/10 Pre the 1990 reforms NZED Power-boards and MEDs Residential and Commercial customers Direct supply customers
Electricity system 25/5/10 Doug Clover Post 1990 reforms Generators Mighty River Power 16% Genesis Power 22% Meridian Energy 27% Contact Energy 24% TrustPower 5% Other Independents and On-site Generators 6% Transpower Sys op Line Companies Direct supply customers New Zealand Steel, Pulp and Paper, Rio Tinto Aluminium, Fonterra Co-operative Group, Methanex, Ontrack etc. Clearing Manager (M-Co) Electricity Retailers Commercial and residential consumers Commerce Commission Electricity Commission Adapted from : MED 2009
DSM – Demand side management– measures that allow for increased control of energy demand, primarily at peak times.
Distributed generation – energy generation that is primarily or entirely for use on-site (located on the user’s side of the meter) – it is most often used in the context of electricity generation, but can include the production of heat as well.
Note: This definition is not the one used by the Electricity Commission