Trustpower Ltd. engages in electricity generation and the retailing of energy and telecommunication services. It operates through the following segments: Retail, Generation, and Others. The Retail segment sells electricity, gas and telecommunication services to customers in New Zealand. The Generation segment produces renewable electricity by hydro power schemes. The Others segment includes unallocated revenues and expenses. The company was founded in 1915 and is headquartered in Tauranga, New Zealand.