Southern Maryland Elec Coop Inc Electricity Rate per kWh (2024 EIA Data)
Cooperative|EIA utility 17637|Maryland|Bundled + Delivery
In 2024, Southern Maryland Elec Coop Inc's residential customers paid an average of 14.84 cents per kWh: $323 million of revenue over 2.18 million MWh of sales across 158,375 bundled residential customers, plus 2,507 delivery-only residential accounts that buy their energy elsewhere, as reported to EIA on Form 861.
How the 14.84c figure is calculated
14.84c/kWh = $323,232k revenue / 2,178,191 MWh x 100. This is EIA's average realised price for 2024: everything Southern Maryland Elec Coop Inc billed its residential customers (energy, delivery, fuel and rider charges, fixed charges) divided by the kilowatt-hours it sold. It is not a tariff rate, and a 2024 annual average will differ from a current bill. For a 1,000 kWh month at this average, the energy cost works out to about $148 before taxes.
About Southern Maryland Elec Coop Inc's 2024 electricity prices
Southern Maryland Elec Coop Inc is a member-owned cooperative electric utility that reports to the U.S. Energy Information Administration under utility number 17637. In 2024 it served 158,375 bundled residential customers in Maryland (plus 2,507 delivery-only residential accounts that buy their energy from a competitive supplier), and its average realised residential price was 14.84 cents per kWh: $323 million of residential revenue divided by 2.18 million MWh of residential sales.
Across the other sectors, Southern Maryland Elec Coop Inc's 2024 average prices were 12.60 cents for commercial customers (15,928 accounts). Maryland allows retail choice, so the customer base splits two ways: 158,375 residential customers took bundled service (energy plus delivery) at 14.84 cents per kWh, while 2,507 bought their energy from a competitive supplier and paid Southern Maryland Elec Coop Inc only for delivery, which averaged 5.55 cents per kWh for the wires portion.
Within Maryland, Southern Maryland Elec Coop Inc ranked number 5 of 9 utilities with bundled or delivery service by residential accounts served (160,882, bundled plus delivery-only) and accounted for 8.07% of the state's residential electricity sales in 2024, measured in MWh sold or delivered rather than in customers. The state-wide average realised residential price in 2024, computed from the same EIA file, was 17.86 cents per kWh, so Southern Maryland Elec Coop Inc's customers paid 3.02 cents below the Maryland average (-16.9%). For context, EIA's latest monthly figure for Maryland is 21.84 cents per kWh (June 2026, Electric Power Monthly); that is a different, more recent measure across all utilities and is not directly comparable with a 2024 annual average.
EIA's service-territory file places Southern Maryland Elec Coop Inc in 4 Maryland counties: Calvert, Charles, Prince Georges, and St Marys. On the grid side it operates in the RFC NERC region and the PJM Interconnection market, and reported transmission and distribution as its activities. Balancing authority code: PJM.
EIA's preliminary 2025 early release (published 4 August 2026) shows a residential price of 16.43 cents per kWh for Southern Maryland Elec Coop Inc in Maryland across 163,451 residential customers, 1.59 cents higher than the 2024 final figure. Early-release data has not been validated by EIA and must not be aggregated; the 2024 final figures remain the reference on this page until the 2025 final file is published.
The nearest other utilities in Maryland by service-territory centroid are Easton Utilities Comm (34 miles away, 13.06 cents), Potomac Electric Power Co (34.5 miles away, 20.08 cents), Baltimore Gas & Electric Co (44.7 miles away, 17.91 cents), Choptank Electric Cooperative, Inc (47.9 miles away, 16.46 cents), and Delmarva Power (54.9 miles away, 17.23 cents).
| Sector | Customers | Sales (MWh) | Revenue ($k) | Avg c/kWh |
|---|---|---|---|---|
| Residential | 158,375 | 2,178,191 | 323,232 | 14.84 |
| Commercial | 15,928 | 1,205,262 | 151,914 | 12.60 |
Bundled service vs delivery-only customers
Counties served in Maryland (4)
From the EIA-861 Service Territory file; a listed county can be served in part only.
2025 early release (preliminary, not validated by EIA)
Residential price in Maryland: 16.43c/kWh (+1.59c vs 2024 final), 163,451 residential customers; commercial 14.17c. Published 4 August 2026. EIA marks this file "not fully edited, use with caution"; the 2024 final figures above remain the reference.
Nearby and comparable utilities in Maryland
- EIA utility number
- 17637
- Ownership type
- Cooperative
- Data year
- 2024 final (EIA-861)
- Primary state
- Maryland
- Service type
- Bundled + Delivery (Part A, C)
- Bundled residential customers (MD, price basis)
- 158,375
- Residential accounts served (MD), bundled + delivery-only
- 160,882
- All accounts, all sectors (MD)
- 177,155
- Residential price, 2024
- 14.84 c/kWh
- Commercial price, 2024
- 12.60 c/kWh
- Residential sales
- 2.18 million MWh
- Residential revenue
- $323 million
- Delivery-only residential customers
- 2,507
- Delivery-only residential charge
- 5.55 c/kWh
- Rank in Maryland by residential accounts served
- 5 of 9
- Share of Maryland residential sales (MWh, not customers)
- 8.07%
- Maryland average, 2024
- 17.86 c/kWh
- Counties served (MD)
- 4
- NERC region
- RFC
- RTO / ISO
- PJM Interconnection
- Balancing authority
- PJM
- Reported activities
- Transmission, Distribution
- 2025 early release (preliminary)
- 16.43 c/kWh
- Change vs 2024 final
- +1.59 c/kWh
- Registry status
- Reported on Form EIA-861 for 2024
Realised price times usage; fixed charges are already inside the average. Bill calculator ->
Annual averages hide seasonal and tariff differences. Diagnose a high bill or model time-of-use pricing.
Bill Diagnostic ->Time-of-Use Guide ->Source: U.S. Energy Information Administration, Form EIA-861 Annual, 2024 final data (public domain), retrieved 28 August 2026; prices are average realised revenue per kWh, not tariffs. Final 2024 file f8612024.zip (released 3 December 2025) from the EIA-861 detailed data files. Preliminary 2025 figures come from the early-release file f8612025er.zip (4 August 2026), which EIA has not yet validated; they are labelled as such wherever shown and never mixed into a final figure.
Method: cents per kWh = revenue (thousand dollars) divided by sales (megawatthours), times 100. Customer counts, sales and revenue are the utility's own annual survey responses by state and sector. Bundled = energy plus delivery from one utility; delivery-only = the wires charge for customers who buy energy from a competitive supplier; energy-only = a competitive supplier's energy charge without delivery. County lists come from the EIA-861 Service Territory file; territory centroids used for "nearby utilities" are unweighted means of Census 2023 county centroids. EIA content is in the public domain (EIA copyright and reuse statement); the EIA logo is not used. Corrections: [email protected].