Vermont Wind Curtailment Mitigation Project Overview
Green Mountain Power and Vermont Electric Cooperative collaborated with Sandia National Laboratories to implement a 3MW/12MWh Battery Energy Storage System in North Troy, VT. The project aims to optimize battery storage to manage surplus energy from renewable sources, reducing curtailment and alleviating strain on the transmission system in Northern Vermont. By harnessing excess renewable energy and dispatching it during peak demand periods, the project mitigates wind curtailment issues and minimizes costs for utility customers.
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Vermont Wind Curtailment Mitigation Battery Energy Storage System October 24, 2023 October 24, 2023 P R E S E N T E D B Y Craig Kieny (Vermont Electric Cooperative) Kirk Shields (Green Mountain Power) Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy s National Nuclear Security Administration under contract DE- NA0003525. SAND2020-6971 PE
Project Description and Purpose Project Description and Purpose Who: Green Mountain Power, Vermont Electric Coop Where: North Troy, VT What: 3MW / 12 MWh BESS Purpose: To LEARN how to use battery storage to manage energy from Renewable resources that would otherwise be curtailed because of too much generation with respect to load and transmission facilities in Northern Vermont. October 24, 2023 SAND2020-6971 PE 2
Situation Analysis Situation Analysis Problem Statement: over 400 MW of generation, virtually all of it renewable and much of it intermittent, 30-50 MW of load approximately 250 MW of Transmission export capability. In 10%-15% of the hours in a year, the generation in the area exceeds load and current transmission system export capability leading to: Curtailment of wind resources Millions of $ of increased costs to utility customers due to lower Locational Marginal Prices for all resources in the area. Proposed Solutions: Transmission system upgrades Expected to eliminate approximately 80% of the impacts Battery Storage To capture renewable energy that otherwise would have been curtailed and gone unused. Dispatch energy when generation in the area is relatively low loads are high. October 24, 2023 SAND2020-6971 PE 3
Project Partners Project Partners Department of Energy/Sandia National Labs DOE/Sandia providing $2.0 Million Cost-Share Funding Sandia providing project oversight Green Mountain Power Investor-Owned Utility Approx. 255,000 customers Owner of 63 MW Kingdom Community Wind (KCW) Project 50% ownership in Battery project $2.25 Million capital investment Project would not have moved forward without the Cost-Share Funding. Vermont Electric Cooperative Consumer-owned Utility Approximately 34,000 customers PPA for 13% of KCW output Host utility for battery project and KCW 50% ownership in Battery project $2.25 Million capital investment October 24, 2023 SAND2020-6971 PE 4
Site Layout Site Layout October 24, 2023 SAND2020-6971 PE 5
System System EVLO Hydro-Quebec subsidiary EVLO 1000 1MWh modular BESS Chemistry: Lithium Iron Phosphate Passive & active gas venting Ambient Temp Range: -30 C to +55 C -22 F to 131 F Beg-Of-Life: 3.6MW / 14.29 MWh End-Of-Life: 3.6MW / 12.1 MWh October 24, 2023 SAND2020-6971 PE 6
Use Cases Use Cases Ranked by Learning Potential Ranked by Financial Benefit Capture otherwise-curtailed energy Peak Reduction Peak Reduction Provide Frequency Regulation service to ISO-NE Provide Frequency Regulation service to ISO-NE Capture Otherwise Curtailed Energy Energy Arbitrage Energy Arbitrage October 24, 2023 SAND2020-6971 PE 7
Important Milestones Completed Important Milestones Completed Milestone Date Completed RFP Issued February 2022 EVLO Selected as Battery Vendor April 2022 Permit Applications Filed September 2022 Permits Received March 2023 Electrical and Civil Design Drawings April 2023 Electrical and Civil Contractors Selected June 2023 Construction Began August 2023 Initial Use Case Decision Making Strategy September 2023 Platforms Delivered September 2023 Conduit Installation and Cables Pulled October 2023 October 24, 2023 SAND2020-6971 PE 8
Construction Update Construction Update August 17 August 17 October 24, 2023 SAND2020-6971 PE 9
Construction Update Construction Update August 31 August 31 October 24, 2023 SAND2020-6971 PE 10
Construction Update Construction Update September 22 September 22 October 24, 2023 SAND2020-6971 PE 11
Construction Update Construction Update September 22 September 22 October 24, 2023 SAND2020-6971 PE 12
Construction Update Construction Update October 19 October 19 October 24, 2023 SAND2020-6971 PE 13
Important Milestones Important Milestones To Be Completed To Be Completed Milestone Status Target Completion Date Battery Foundations In progress End of October 2023 Dry Run for Operating Batteries Pending TBD Batteries Delivered Pending 11/1-11/7 2023 Batteries Set Pending Mid-Nov 2023 Construction Complete Pending Mid-Dec 2023 Commercial Operation Late-Dec 2023 Early Jan 2024 Register for ISO-NE Regulation Market In Progress Late-Feb 2024 October 24, 2023 SAND2020-6971 PE 14
Remaining Remaining Risks Risks Have Been Significantly Reduced Have Been Significantly Reduced Milestone Timing of Battery Delivery Battery Functionality Weather October 24, 2023 SAND2020-6971 PE 15
Thank You Kirk Shields, kirk.shields@greenmountainpower.com Craig Kieny, ckieny@vermontelectric.coop This work is funded by the DOE OE Stationary Energy Storage program directed by Dr. Imre Gyuk. October 24, 2023 SAND2020-6971 PE
