Arizona Public Service Co. (APS) announces a request for proposal (RFP) for dispatchable capacity to meet peak demand. The RFP will be released on January 30 with a bid submittal deadline of March 18, 2015.

APS is seeking approximately 300 megawatts of peaking capacity, which may be bid as a power purchase agreement or a build, own and transfer structure. Proposals must demonstrate that projects can achieve commercial operation by the summer of 2018 or 2019. The entire RFP process will be monitored and reviewed by a third-party independent monitor.

Proposals will be evaluated and compared to an APS self-build option to expand the existing Ocotillo Power Plant site located in Tempe, Ariz.

Additional information about the RFP is available online at www.aps.com/rfp.

APS expects to issue a second RFP in 2016. This “all-source” RFP will seek proposals to meet APS’s capacity and energy needs starting in 2019 or 2020.

APS, Arizona’s largest and longest-serving electricity utility, serves nearly 1.2 million customers in 11 of the state’s 15 counties. With headquarters in Phoenix, APS is the largest principal subsidiary of Pinnacle West Capital Corp. (NYSE: PNW).