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Information About the Sheffield-Highgate Export Interface

This page has been created to provide equal access for all stakeholders to information about the Sheffield-Highgate Export Interface or SHEI. This information resource is intended to facilitate compliance by VELCO with FERC Standards of Conduct.

BACKGROUND ON THE SHEI 

Following the addition of the Kingdom Community Wind plant, the Sheffield-Highgate Export Interface (SHEI) was created to monitor system flows in relation to system capacity in real time. The SHEI is an area of Vermont’s electric grid in the northern tier of the state. Generation resources inside that interface are limited in real time to ensure that system capacity is not exceeded in the event of a potential future transmission outage. The practical effect of the SHEI is that, from time to time, generation resources in the northern tier are required to curtail their output due to the lack of capacity to export power. Utilities, clean energy advocates, regulators and other stakeholders are currently discussing ways that the SHEI limitations can be addressed to reduce or eliminate curtailments of generation located within the interface.

DOCUMENT LIBRARY

Issued Name
12/11/2019 Materials: SHEI, VELCO-Highgate Power, December 11, 2019 (redacted)
12/10/2019 Materials: SHEI, Highview Power-VELCO, December 10, 2019
5/10/2018 VELCO SHEI cost estimates
5/8/2018 VELCO Response to VEC questions, 5/8/2018
4/18/2018 VELCO responses to informal information requests, 4/18/2018
1/30/2018 VELCO SHEI cost estimating methodology
1/24/2018 Materials: SHEI, GMP, 1/24/2018
1/24/2018 Materials: SHEI, BED/VPPSA, 1/24/2018
1/11/2018 GMP slides, PUC public forum, 1/11/2018
1/10/2018 VELCO SHEI presentation, PUC forum, 1/11/2018
12/5/2017 VELCO SHEI Study Final Report, 12/5/2017
11/2/2017 Memo: VELCO to GMP, 11/2/2017
10/18/2017 Materials: SHEI analysis final results, 10/18/2017
9/1/2017 SHEI Study Preliminary Results Presentation, 9/1/2017
8/24/2017 SHEI study update 1, 8/24/2017
7/28/2017 SHEI Options Analysis RFP Summary, 7/28/2017
7/12/2017 Materials: VELCO SHEI preso as shown, 7/12/2017
7/12/2017 Materials: VELCO SHEI white paper (draft), 7/12/2017
6/5/2017 Materials: SHEI, Presume/VELCO to Smith/GMP, 6/5/2017
5/30/2017 Materials: SHEI, Smith/GMP to Presume/VELCO, 5/30/17
5/26/2017 Materials: SHEI, Smith/GMP to Presume/VELCO, 5/26/17
5/18/2017 Materials: SHEI limit, VELCO-GMP, May 18, 2017 (Redacted)
5/8/2017 Materials: SHEI, Bombardier/GMP to Dunn/VELCO, 5/8/17

 

 

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