Aadrii Limited is a joint-venture district heating system owned equally by the Gwich'in Development Corporation and NWT Power Corporation. The system provides space heating to several customers in the community of Fort McPherson . Heat for the system is obtained by capturing residual heat from the NWT Power Corporation's diesel-electric power plant. Due to the availability of other forms of heating fuel in Fort McPherson , customers on the district heating system can choose to heat their buildings with other forms of energy such as heating oil. As a result, the PUB takes a "light-handed" approach to Aadrii Limited by regulating on a complaints-basis only.