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Transmission Facilities - Network or Not

Paul Dumais's picture
CEO Dumais Consulting

Owner and CEO of Dumais Consulting (www.DumaisConsulting.com) which provides expert ratemaking services to energy companies. Dr. Dumais is a ratemaking and regulatory expert who specializes on...

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  • Dec 18, 2020
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FERC uses the Mansfield Criteria to determine if a transmission facility is a network facility:

The five Mansfield criteria are:  (1) whether the facilities are radial, or whether they loop back into the transmission system; (2) whether energy flows only in one direction, from the transmission system to the customer over facilities, or in both directions, from the transmission system to the customer, and from the customer to the transmission system; (3) whether the transmission provider is able to provide transmission service to itself or other transmission customers over the facilities in question; (4) whether the facilities provide benefits to the transmission grid in terms of capability or reliability, and whether the facilities can be relied on for coordinated operation of the grid; and (5) whether an outage on the facilities would affect the transmission system.  Mansfield, 97 FERC ¶ 61,134 at 61,613-14.

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Matt Chester's picture
Matt Chester on Dec 18, 2020

What are the implications if a specific facility does not fall under the umbrella of a network facility? 

Paul Dumais's picture
Paul Dumais on Dec 18, 2020

Often times it impacts what facilities are regionally versus locally allocated in RTOs. 

Paul Dumais's picture
Thank Paul for the Post!
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