APS to request proposals for new solar and wind resources

PHOENIX – Arizona Public Service Company (APS) announced plans on July 29th 2019 to add new solar and wind resources that will help expand the company’s renewable energy portfolio to about 2,500 megawatts by 2021 – enough to power more than half a million Arizona homes.

The company plans to issue two Requests for Proposal (RFPs) by Sept. 15, 2019. The first RFP will seek competitive proposals for up to 150 megawatts of APS-owned solar resources to be in service by 2021. This solar generation will be designed with the flexibility to add energy storage as a future option. A second RFP will pursue up to 250 megawatts of wind resources to be in service as soon as possible, but no later than 2022. Both RFPs will allow commercial customers to partner with APS in support of their own sustainability and clean energy goals.

Source: https://www.aps.com/en/ourcompany/news/latestnews/Pages/aps-to-request-proposals-for-new-solar-and-wind-resources.aspx

Utility Solar Battery Fire in Arizona

The Fire Department was called about 6 p.m. Friday (4/19/19) about smoke rising from the APS McMicken Energy Storage site. The responding firefighters were evaluating the lithium battery when there was an explosion that left the firefighters with serious chemical and chemical-inhalation burns. One of the firefighters was in critical condition at the Maricopa Medical Center's burn unit in Phoenix and in surgery until 1 a.m. before becoming stable.

This incident illustrates that utility scale battery systems can be very dangerous. Further information is not available as of the posting of this article. As more information becomes available, the Solar Center will provide updated coverage.

 The battery system is one of two identical battery systems installed in late 2016 and became operational in early 2017.

There is a good article on these battery systems on the  APS website at On Edge of Phoenix, APS Tests the Relationship of Solar and Batteries

The McMicken unit is contained at the head of the feeder in an existing substation.

Note, these are smaller, earlier batteries that those described in our earlier APS battery article: APS announces 'Solar after Sunset" battery storage inititative

Recent APS presentation slide on these systems, still no further incident details.

Still no report as of 7/5/20


Many others have taken note of this fire such as Littleton (NH) fire chief raises concerns about battery energy-storage facility