TrustPower has approximately 315 million shares on issue as well as $263 million worth of subordinated bonds maturing between September 2012 and December 2015 and $140 millionworth of senior bonds maturing between December 2014 and December 2016.

TrustPower has two large shareholders and over 13,000 small parcel shareholders as well as 9,000 bond holders.  
 
Infratil Limited is a specialist investor in infrastructure and utility assets.  Infratil is listed on the NZX and is a major stakeholder in airports in New Zealand and Europe as well as electricity and other investments in New Zealand and Australia.  Infratil was a cornerstone shareholder in TrustPower on formation in 1994.  
 
The Tauranga Energy Consumer Trust (TECT) is managed by six elected Trustees.  The beneficiaries of TECT are electricity consumers with a TrustPower account situated in the territories which the former Tauranga Electric Power Board and Tauranga Electricity Limited supplied. In simple terms, this is the districts of the Tauranga and the Western Bay of Plenty Councils.   TECT was a cornerstone shareholder in TrustPower on formation in 1994.   

• Infratil Limited
• Tauranga Energy Consumer Trust
• Others