The Hawaii Department of Transportation (HDOT) is set to install 4,260 solar modules at the Daniel K. Inouye International Airport in Honolulu.
The solar panels will be installed on the seventh floor of the Terminal 1 parking garage, formerly the Interisland Terminal, above a new carport. It will also add shaded parking for vehicles.
They are expected to generate 2 MW-DC/1.6 MW-AC, which will be sufficient to power more than 328 homes based on a full day of sunshine.
The energy produced by the solar panels will be used at the airport facility and will help to slash the overall electricity bill by nearly half.
According to HDOT, the contract with Johnson Controls is set to generate more than $600m in guaranteed cost savings over the 20-year life of the contract at Hawaii’s airports that started in 2014.
Hawaii Governor David Ige said: “There is so much to like about this improvement project. It’s good for the environment, it will save the state money and it provides covered parking at the airport. This is another step forward in my administration’s continuing mission to meet Hawaii’s sustainability goals.”
The project supports Ige’s and the State of Hawaii’s goal to be 100% renewable energy by 2045.
Construction work will continue from 20 August through 16 November this year. During this period, 344 parking stalls on the roof of Terminal 1 will not be available.
However, the vehicle and pedestrian bridges from the Terminal 1 parking garage to the International parking garage will remain open for additional parking stalls.
Overall, HDOT and Johnson Controls are completing more than 900 individual conservation measures, replacing nearly 98,000 light fixtures with high-efficiency light-emitting diode (LED) technology at Hawaii’s airports.
They are also installing more than 21,000 solar photovoltaic panels. The overall cost of the project is estimated to be $207m, which is financed from guaranteed energy savings.