The generation will be designed with the flexibility to add energy storage as a future option. Arizona Public Service Company ( Phoenix ) has unveiled plans to install a combined 400 MW in solar and wind power by 2021 . APS will receive two requests for proposal this year , one for 100 MW of solar power and another for 250 MW of wind capacity .
Arizona Public Service Company ( Phoenix ) has unveiled plans to install a combined 400 MW in solar and wind power by 2021 . APS will receive two requests for proposal this year , one for 100 MW of solar power and another for 250 MW of wind capacity .