Case Details

- Case Details:

Case Number:

2023-00316

Case Status:

Closed

Utility/Industry Type :

Multiple

Utility/Industry Subtype :

Multiple

Case Type :

COMMISSION INITIATED

Case Subtype :

INQUIRY

Pertaining to Utility/Company :

PUBLIC UTILITIES COM-M

Case Title :

COMMISSION INITIATED INQUIRY REGARDING UTILITY CONTROL OR OWNERSHIP OF ENERGY STORAGE

Initiating Filer :

PUBLIC UTILITIES COM-C

Case Start Date :

11/29/2023

Assigned Staff :

Dale.Coty,
Erin.Beaze,
Joyce.Horton,
Rikka.Strong,
liz.wyman,
Sally.Zeh,
Michael.Simmons,
Jameson.McBride

View Case References

Filings (35) Data Requests (0)Public Comments (6) Active Party and Notification List (511) Assigned Staff (8)

Item No.	Date Filed	Description Of Filing	Filing Party	Filed By	No of Attachments	Deleted Filings
35	3/13/2024	PUC 2024 Energy Storage Report	COMMISSION STAFF, CMS	COMMISSION STAFF, CMS	1
34	2/1/2024	EMT Reply Comments	EFFICIENCY MAINE TRUST	Haslett, Nat	1
33	2/1/2024	ReVision Energy Reply Comments	ReVISION ENERGY INC	Bourgoine, Lindsay	1
32	2/1/2024	Responsive Comments	MAINE RENEWABLE ENERGY ASSOCIATION	Donoghue Esq., Eliza	1
31	2/1/2024	CMP Reply Comments	CENTRAL MAINE POWER COMPANY	Regulatory Administration, Debra Mills	1
30	2/1/2024	Comments of Industrial Energy Consumer Group	INDUSTRIAL ENERGY CONS GROUP - IECG	Buxton ESQ, Anthony	1
29	2/1/2024	Versant Power Responsive Comments to Notice of Inquiry	VERSANT POWER	Littell, David	2
28	2/1/2024	OPA Reply Comments	OFFICE OF THE PUBLIC ADVOCATE	PUBLIC ADVOCATE, OFFICE OF THE	1
27	2/1/2024	NEPGA responsive comments on Docket 2023-00316, regarding utility control or ownership of energy storage	NEW ENGLAND POWER GENERATORS ASSOCIATION	Connors, Molly	1
26	1/31/2024	CMP Request for Extension	CENTRAL MAINE POWER COMPANY	Regulatory Administration, Debra Mills	1

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Posted By	Posted Date	Comments	Attachment(s)
Spencer Egan PO Box #655, Northeast Harbor, ME 04662 Email ID: spencer.thomas.egan@gmail.com Phone No.: 2073293387	1/17/2024	While storage will of course play a crucial role in the the energy transition, I believe it is important to draw a strong distinction between storage and clean generation technologies. The energy produced produced by generation such as wind and solar has a clear intrinsic value. Power delivered at different times might have a fluctuating value based on fluctuating demand, but the energy produced will always have value to a society. Unlike generation which produces energy, storage only provides value to society by arbitraging on the instantaneous value of power, and the intrinsic value of energy. Many respondents to this NOI will surely point out that while storage can provide value as a T&D asset to alleviate congestion or other violations, it is unlikely that any storage system deployed would only hold value as a T&D asset. Rather than own storage assets themselves (stranding ratepayers with the opportunity cost of not utilizing the assets for other uses), I believe that it should be the responsibility of the utilities to provide clear and transparent price signals that indicate when power is more or less valuable on the distribution and sub-transmission network, similar to LMPs at the transmission level. Variations in this pricing signal should reflect the value that storage could provide to all ratepayers by arbitraging between when the value of power is low (renewables are restricted due to sub-transmission grid constraints) and when it is high (no constraint exists because of elevated demand). Utilities could be allowed to earn a small profit on their service of determining fair and accurate prices, but ultimately they would not own the assets themselves. To be clear, customers would not be exposed to these local congestion constraint prices, but a storage asset with control over their load and dispatch could opt in to arbitrage on the price differentials. I thank the commission for the chance to comment on this topic.
Matt Cannon Sierra Club Maine PO Box 3760 Portland, ME 04104	1/17/2024	see attachment	comments_PUC_Case_2023-00316 (1).pdf
CLAYTON DAN MCKAY Ratepayer, Inc. 35 Bruce Tibbetts Drive Dixfield, Maine 04224 Email ID: mckaydan2@gmail.com Phone No.: 12074410479	1/17/2024	Just remenber, batteries wear out, wires do not
Tonja L Wicks Elevate Renewables 200 Clarendon, 55th FL Boston, MA 02116 Email ID: twicks@elevaterenewableenergy.com Phone No.: 8572170289	1/5/2024	Elevate thanks the Maine Public Utilities Commission ("Commission") for the opportunity to comment on the December 6, 2023, Maine Public Utilities Commission Notice of Inquiry Seeking Public Comment on Utility Control or Ownership of Energy Storage. In summary, Elevate supports the State's objective to procure and deploy front-of-the-meter (FTM), standalone, grid-scale energy storage systems (ESS) and employs the Commission to prohibit investor-owned transmission and distribution utilities from owning energy storage systems.	Elevate Renewables NOI Response.pdf
CLAYTON DAN MCKAY Ratepayer, Inc. 35 Bruce Tibbetts Drive, Dixfield, Maine 04224 Email ID: mckaydan2@gmail.com Phone No.: 12074410479	1/1/2024	The latest sales figures of EVs are so dismal, perhaps CMP and Versant can turn a buck by flipping these unwanted golf carts into residential energy battery storage units.
CLAYTON MCKAY SR 35 Bruce Tibbetts Drive, Dixfield, Maine 04224 Email ID: mckaydan2@gmail.com Phone No.: 12074410479	12/16/2023	As a ratepayer of one of these investor-owned utilities, I request detailed itemized costs associated with such contemplated storage mechanisms as described by the sponsor of LD 1850. The following quotes are as reported in the "Bangor Daily News" dated May 17,2023 :"Maine is far from its goal for renewable energy battery storage." "We can't move very fast towards greener energy if we don't include battery energy storage in the mix," said Sen. Eloise Vitelli, D-Arrowsick "Renewable sources such as wind and solar are intermittent, and we need to do something in those interim times when the sun isn't shining, and the wind isn't blowing." LD 1850 became Public Law June 30,2023 with the governor's signature. This law states "The state goal for energy storage system development is at least 300 megawatts of installed capacity located within the State by December 31, 2025, and at least 400 megawatts of installed capacity located within the State by December 31, 2030". This is what happens when word salads pretend to be engineering doctrines. Without a time scale associated with the storage of 300 megawatts, there is an implication that 300 megawatts are continuously available from the storage device, 24 hours a day, 365 days a year. The law confuses megawatts with megawatt hours. Storage capacity is typically measured in units of energy: kilowatt-hours (kWh), megawatt-hours (MWh), or megajoules (MJ). Therefore if the plan is to deliver 300 megawatts of energy from storage at a given time ("When the sun isn't shining and the wind isn't blowing"), , a mathematical approach considering the times of no sunshine and no wind, the amount and times of electrical generation from sun and wind derived energy, battery storage sizing, battery locations in association to points of delivery to the distribution grid, losses of energy to and from the battery system, the expected life of the batteries, annual costs, such as insurance, maintenance, operations, service, part replacements.

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Notification List Active Party List

Name of Person/Company	Representing Company	Mailing Address	Email/Phone/Fax
Abbey, Ross		100 N. 6th Street Suite 410B Minneapolis MN 55403	Email ID: ross.abbey@us-solar.com Phone Ph: 612-229-1920 Fax:
Abbott, Charles Lincoln		12 Mill Brook Road Plainfield CT 06374	Email ID: cabbott@greenleaf-power.com Phone Ph: 916-596-2503 Fax:
Abello MR, Thomas		14 Maine Street, Suite 401 Brunswick ME 04011	Email ID: tabello@tnc.org Phone Ph: 207-687-4843 Fax:
Agnew, Mark			Email ID: magnew@eei.org Phone Fax:
Ahern, Beth		ME	Email ID: beth@maineconservation.org Phone Fax:
Aikin, Kay E		148 Middle St. Suite 1D Portland ME 04101	Email ID: kay.aikin@introspectivesystems.com Phone Ph: 207-245-4797 Fax:
Akers, Keith		250 West 57th Street Suite 701 New York NY 10107	Email ID: keith@syncarpha.com Phone Ph: 513-237-1749 Fax:
Albert, Eben M		254 Commercial St Portland ME 04101	Email ID: ealbert@pierceatwood.com Phone Ph: 207-791-1282 Fax:
Alexander, Barbara		ME	Email ID: barbalexand@gmail.com Phone Fax:
Alexander, Barbara Reid		44 Beech Street Hallowell ME 04347	Email ID: barbalexand@gmail.com Phone Ph: 207-458-1049 Fax:

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Staff Name	Role
Beaze, Erin	Staff Analyst
Coty, Dale	Support Staff
Horton, Joyce	Staff Analyst
McBride, Jameson	Staff Analyst
Simmons, Michael	Staff Analyst
Strong, Rikka	Hearing Examiner
Wyman, Liz	Reviewer
Zeh, Sally	Reviewer

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