The Natural Energy Laboratory of Hawaii Authority (NELHA) administers the Hawaii Ocean Science and Technology Park in the U.S. state of Hawaii. NELHA was founded in 1974. At 870 acres (350 ha), HOST Park is a state-subsidized industrial park for incubator and marginal commercial ventures. Part of the subsidy is provided by writing off tenant debt.NELHA also administers a small site, 4 acres (1.6 ha), in Puna on the eastern side of the Island of Hawaii for geothermal research.