Solid Energy was the largest coal mining company in New Zealand and is a state owned enterprise of the New Zealand Government. The company was formed from the former government department State Coal Mines. It was then established as a state owned enterprise called Coal Corporation in 1987 (known as Coalcorp), and renamed Solid Energy New Zealand Limited in 1997. In 2015, it had a turnover of NZ$369.8 million and produced 2.8 million tonnes of coal.