Historical Changes in NZ Geothermal Electricity Generation Capacity

Plant Name Current Owner Commiss-ioning Date Installed Capacity (MWe)  Cumulative Capacity (MWe)
   
Wairakei Contact Energy 1958-63 193 193
Kawerau NST & NTGAL 1966 8 201
Wairakei Contact Energy 1982 -36 165
Kawerau Binary (TG1) Nova Energy & NTGAL 1989 2 167
Ohaaki Contact Energy 1989 114 281
Kawerau Binary (TG2) Nova Energy & NTGAL 1993 4 285
Ohaaki Rerating Contact Energy 1996 -10 275
Wairakei BP Contact Energy 1996 5 280
Poihipi Road Contact Energy 1996 50 330
Rotokawa Mercury 1997 29 359
Ngawha Top Energy 1998 10 369
Mokai 1 TPC 1999 55 424
Ohaaki Derating Contact Energy 2001 -38 386
Rotokawa Extension Mercury 2003 6 392
Kawerau BP Decom NST & NTGAL 2004 -8 384
Kawerau BP2 NST & NTGAL 2004 8 392
Wairakei Binary Contact Energy 2005 14 406
Mokai 2 TPC 2005 39 445
Ohaaki Derating Contact Energy 2005 -16 429
Mokai 3 TPC 2007 18 447
Ohaaki Rerating Contact Energy 2007 7 454
Kawerau (KGL) Mercury 2008 100 554
KA24 Eastland Group 2008 8 563
Ngawha 2 Top Energy 2008 15 578
Nga Awa Purua Mercury & TN2T 2010 140 718
Tauhara Te Huka Contact Energy 2010 24 742
TOPP1 NTGAL 2013 21 763
Ngatamariki Mercury 2013 82 845
Te Mihi Contact Energy 2014 166 1011
Wairakei Reduction Contact Energy 2014 -30 981
TG1 Retirement Nova Energy 2014 -2 978
Kawerau (KGL) rerating Mercury 2017 7 985
   
NTGAL Ngati Tuwharetoa Geothermal Assets Limited  
NST Norske Skog Tasman  
TPC Tuaropaki Power Company  
TN2T Tauhara North No. 2 Trust