Hawaiian Electric Co. is looking for developers interested in supplying renewable energy to its power grid on O'ahu.

The local utility recently issued a request for proposals asking bidders to provide up to 100 megawatts of renewable energy.

The additional power will be in addition to HECO's existing renewable energy sources, which include the H-POWER waste-to-energy plant and the soon-to-be completed Campbell Industrial Park plant, which provide 110 megawatts of power and will run on renewable biodiesel fuel.