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Delmarva Power rate increase

Electric · Delaware, Maryland · Investor-owned utility · part of Exelon Corporation

Proposed

Last checked

In Delaware, Delmarva Power has a pending increase of about +$6.42/month for a typical 810 kWh home, if regulators approve the request.

Details and sources · Estimate for your home

Rate changes, newest first

2026 interim rate increase, subject to refund (Delaware, Docket No. 25-1555)

Interim rates · Delaware · Electric

In effect

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
June 9, 2026
Decided
July 1, 2026
Effective
July 9, 2026
Requested increase
$51.82 million
Approved increase
$34.32 million
Docket
PSC Docket No. 25-1555

Delmarva petitioned to put $51.8 million of its request into effect on an interim basis, then cut that to $45.9 million after Delaware passed SB 326. The PSC allowed $34.3 million from July 9, 2026 (half of the $68.6 million updated request) and $51.5 million from Dec. 9, 2026 if no final order has been issued, all subject to refund. Delmarva has appealed to Superior Court.

Utility's stated reasons

  • recover rate case costs while the case is pending
Sources (4) · Verified against regulator or utility filings

Last verified Sep 29, 2026

2026 electric base rate case (Delaware, Docket No. 25-1555)

Base rate case · Delaware · Electric

Proposed

Typical residential bill (810 kWh/month)

  • +$6.42/mostarting July 9, 2026 (+4.13%)Delmarva's estimate for a non-space-heating customer ($155.37 to $161.79), excluding amounts already billed through the DSIC. Fixed part computed from the stated customer charge change, $13.50 to $15.94.

Typical bill before the change: $155.37/month

Proposed amounts; regulators may change them.

Filed
December 9, 2025
Decision expected
2026
Requested effective
July 9, 2026
Requested increase
$67.78 million
Approved increase
Pending
Docket
PSC Docket No. 25-1555

Delmarva asked for $67.8 million a year (21.7% over base rates), including $23.2 million moved from its DSIC surcharge, at a 10.5% ROE. It estimated +$6.42 a month (4.13%) at 810 kWh; the Public Advocate puts the base-rate rise at $9.30 (16.2%). A later update using actual 12-month data raised the ask to $75.6 million. Interim rates began July 9, 2026; a decision is expected in late 2026.

Utility's stated reasons

  • infrastructure investment for grid reliability and resiliency
  • replacing aging equipment
Sources (4) · Verified against regulator or utility filings

Last verified Sep 29, 2026

2023-2025 multi-year rate plan (Maryland, Case No. 9681)

Multi-year rate plan · Maryland · Electric

In effect

Typical residential bill (1,004 kWh/month)

  • +$5.10/mostarting January 1, 2023 (+2.98%)Rate year 1; residential customer on Standard Offer Service.
  • +$1.80/mothen from January 1, 2024 (+1.02%)Rate year 2.
  • +$1.81/mothen from January 1, 2025 (+1.01%)Rate year 3, the final step.

Combined: +$8.71/mo

Filed
May 19, 2022
Decided
December 14, 2022
Effective
January 1, 2023
Requested increase
$37.5 million
Approved increase
$28.9 million
Docket
Case No. 9681

The PSC approved a settlement letting Delmarva raise Maryland distribution revenue by $28.9 million cumulatively over three rate years (vs $37.5 million sought), at a 9.6% ROE, with steps each Jan. 1 from 2023 to 2025; the 2025 step added about $1.81 a month. In May 2025 the PSC also approved a refund of about $800,000 for 2024 over-recovery, about $0.30 a month from July 2025 to June 2026.

Utility's stated reasons

  • distribution capital projects under a forecasted multi-year plan
Sources (2) · Verified against regulator or utility filings

Last verified Sep 29, 2026

What it could mean for your bill

Sources state the impact for one typical home. Enter your own usage or bill for a rough estimate.

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Who decides

Utility website: www.delmarva.com

Related

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Last checked Oct 2, 2026. Spotted something out of date? Tell us.