- Aug 20, 2019 6:30 pm GMT
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Taken together, APS is proposing to add some 2.5GW of new solar and wind power capacity to its grid by 2021 via the two RFPs, enough to power about 500,000 average homes.
The utility expects to issue both by Sept. 15. One calls for proposals to install as much as 150MW of solar power capacity to be owned by the company and be in service by 2021 with the option to add energy storage capacity.
The second competitive RFP calls for proposals to install as much as 250MW of wind power resources to be in service as soon as possible or at the latest by 2022. The RFP leave the utility the option of purchasing wind-generated electricity from other providers.
APS carried out two RFPs for large-scale battery storage facilities earlier this year so as to enhance grid integration and efficient use of intermittent, variable solar and wind power assets.
Carbon emissions-free resources currently make up half of APS's generation portfolio when nuclear power is included, according to management.
“Our key challenge here is that we don’t compromise reliability or affordability,” Vice President of Resource Management Brad Albert said.