Median bids received by US utility Xcel Energy in a solicitation for energy resources for energy storage paired with solar came in at US$9 per megawatt lower than the previously observed record.
At the end of 2017, Minnesota-headquartered Xcel held an ‘All source solicitation’ for generation assets to be incorporated into its long-term resource planning, issued in late August and with bids received by 28 November. Xcel called the big response to the solicitation “unprecedented”, with some 430 individual proposals submitted, representing 238 projects in total, and 350 of the 430 were renewable energy projects. A similar solicitation in 2013 drew just 55 proposals.
Wind with battery storage: 11 bids were received, representing 5,700MW across eight projects, for a total 5,097MW minus duplicate bids. Bids were priced at US$21 per MWh.
Wind and solar with battery storage: 7 bids were received, with 4,048MW, with a corresponding number of projects and megawatts. Bids were priced at US$30.60 per MWh.
Solar PV with battery storage: 87 bids, for 16,725MW, for a total 59 projects and 10,813MW minus duplicates. Bids were priced at US$36 per MWh.
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