Delmarva Power Affordability and Load Flexibility Portfolio Public Comment

BEFORE THE PUBLIC SERVICE COMMISSION OF THE STATE OF DELAWARE IN THE MATTER OF DELMARVA POWER & LIGHT COMPANY’S APPLICATION FOR APPROVAL OF AFFORDABILITY AND LOAD FLEXIBILITY PORTFOLIO (Filed December 9, 2025) ) ) ) ) ) PSC DOCKET NO. 25-1554 NOTICE OF PUBLIC COMMENT SESSION TO: ALL ELECTRIC CUSTOMERS OF DELMARVA POWER & LIGHT COMPANY AND OTHER INTERESTED PERSONS: A Hearing Examiner appointed by the Delaware Public Service Commission (the “Commission”) will conduct a virtual public comment session concerning the above-captioned case (as further explained below) at the following time and location: Virtual Public Comment Session to be held on March 25, 2026 at 6 pm Please click the link to connect to the meeting DE PSC Docket No. 25-1554 DPL Affordability & Load Flexibility Filing - Public Comment Session Meeting ID: 267 878 013 178 57 Passcode: ov2Lq2gD Dial in by phone +1 302-504-8986,,615338902# United States, Wilmington +1 302-504-8986,,615338902# United States, Wilmington On December 9, 2025, Delmarva Power & Light Company (“Delmarva”) filed an application with the Commission pursuant to 26 Del. C. §§ 201, 301, and 304, seeking approval of a a new portfolio of demand management programs as described below: • Bring Your Own Device - Residential and small commercial customers with qualifying thermostats may enroll in Delmarva’s Demand Response (DR) platform and receive an enrollment incentive and “ongoing participation benefits” in exchange for allowing Delmarva Power to make adjustments to the thermostats during designated event periods • Direct Load Control (DLC) 2.0 Program – Available to residential and small commercial customers, this is a progression of Delmarva’s prior air conditioning cycling program. The

Company will install new load control devices with two-way communications (legacy devices will be eligible to participate for two years) onto central air conditioners and heat pumps. These devices can be remotely cycled during high demand periods to reduce system load. Customers received incentives based on the cycling level selected. • Smart Change Management (SCM) Program - Residential customers with qualifying electric vehicles and charging equipment may opt- in to the program which enables Delmarva Power to dynamically adjust or delay charging sessions during periods of high system demand, redistributing load to lower-demand hours, often overnight. Participating customers receive monthly incentives of $5 or $10, depending on the charger. • EV Time of Use (TOU) Program – This program aligns EV charging behavior with the proposed Whole House TOU Rates. The program evaluates customer charging behavior and compares the cost of that charging under their residential rate to the cost they would have paid had the same charging occurred under the whole house Time of Use Rate, and customers receive a quarterly refund equal to any bill savings they would have realized had their EV charging been billed using Whole House TOU rates. • Whole House Time of Use (WH TOU) Rates – This program replaces and updates Delmarva’s existing R-TOU-ND offering. Updates to the rate offering include a narrowing of on-peak hours and a reduction of the peak/off rate differential, and increased customer education. • A Bring Your Own Battery (BYOB) Pilot Program – This pilot program is available to residential and small commercial customers with eligible behind-the-meter battery energy systems (BESS). Participating customers receive seasonal incentives based on enrolled capacity in exchange for allowing Delmarva to discharge a portion of their stored energy during periods of system peak demand or localized grid constraint. The • Locational Demand Response Pilot– This is a pilot program, open to residential and commercial customers, designed to test the locational value of demand response in areas of the electric grid with known capacity constraints. Customers served by highly constrained feeders may receive enhanced incentives for participating in demand response programs. By testing how geographically focused demand flexibility supports system reliability, the program aims to inform future non-wires alternative strategies. As part of the application, Delmarva is seeking Commission approval of a cost recovery mechanism in the form of a dedicated “Affordability and Load Flexibility Rider,” designed to recover $36.95 million in costs. Delmarva’s states the portfolio will provide approximately $13.3 million in net benefits with a benefit cost ratio (BCR) of 1.36, and that it reduces peak demand and may defers costly system upgrades. On January 7, 2026, the Commission opened this docket to consider Delmarva’s Application. The Commission designated Hearing Examiner Glenn Kenton to schedule public

comment sessions, workshops, and evidentiary hearings as may be necessary to have a full and complete record concerning the justness and reasonableness of Delmarva’s Application. The Commission will make its decision on this matter on the basis of the evidence of record at a public evidentiary hearing, notice of which will be published at a later date. The Commission may approve or reject the proposed portfolio of programs as a whole or in part. You may review Delmarva’s Application and supporting documents to determine how your interest may be affected by going to DelaFile (https://delafile.delaware.gov), the Commission’s docketing and file management system, and by searching for Docket No. 25-1554. If you would like to review documents at the Commission’s offices, please contact the Commission Secretary, Crystal Beenick, at (302) 736-7500 or send an email addressed to Crystal.Beenick@delaware.gov. If you wish to request copies of documents in this matter, please submit a Freedom of Information Act Request Form. The link to this form can be found by visiting this web address: https://sos.delaware.gov/foia-requests/. The Commission will respond to your request in accordance with the Delaware Freedom of Information Act, 29 Del. C. ch. 100. If you have a disability and wish to participate or to review the materials in this matter, please contact the Commission to discuss any auxiliary aids or services you might need to help you. You may contact the Commission in person, by writing, by telephone (including text telephone), by email, or other means. If you have questions about this matter, you may call the Commission at 1-800-282-8574 (toll-free in Delaware) or (302) 736-7500 (voice and text telephone). You may also send questions regarding this matter by Internet e-mail addressed to psc@delaware.gov with “Docket No. 25-1554” in the subject line.