PEPCO (DC)

District of Columbia Utility Interconnection & net metering rules

Spot something wrong?

Tariffs and interconnection rules move often. If something here is out of date or missing, tell us and we'll fix it.

Report a correction

Net Metering AllowedYes

NEM TypeAnnual

Line Taps AllowedNo

Load Taps AllowedNo

AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed: Yes

NEM Type: Annual

TOU Utility: Yes

Post Solar Billing Method: Net Metering

Net Excess Generation Notes: When you have a solar system and are being billed for net metering, you are charged only for the net amount of energy you use during each billing period. In other words, this is the amount of energy we deliver to you minus the excess amount you send back to the smart grid. If you send more energy to the grid than we deliver, you can receive credits on your bill. This program allows you to make full use of your own solar energy system, giving you more control over your energy costs.

Rebates Offered: Yes

Deregulated: No

Allows Standby: Yes

Interconnection & taps

Approval Req To Install: Yes

Line Taps Allowed: No

Load Taps Allowed: No

Automatic Transformer Upgrade Size: 0

Meter Aggregation Allowed: No

System size & offset

System Size Restrictions: 0

System Size Restriction Type: No Restrictions

System Size Battery Included: No

System Size Includes Existing Systems: No

Offset Type: Percentage

Offset Value: 100

Offset Calculation Basis: Historical

Offset Calculation Period: 12

Industry Standard Watts Sqft: 2

Utility Specific Adjustments

System Sizing Requirements

Add up your total energy use (kWh) from the last 12 Pepco bills.
Divide that number by 1,200 to find the maximum inverter size (kW) you can install.
Example: 12-month usage ÷ 1,200 = max system size in kW.
In D.C., your system can be sized up to 100% of your 12-month energy use.

Net Metering Offset Caps

2021: Up to 140% of annual usage
2022: Up to 160% of annual usage
2023: Up to 180% of annual usage
2024: Up to 200% of annual usage

Inverter Oversize Restrictions: No

System Offset Notes

Offset Calc Tool: PV Watts

Metering & disconnect

Production Meter Required: No

Production Meter Position: N/A

Production Meter Labeling: N/A

AC Disconnect Required: Yes

AC Disconnect Labeling: Accessible and Lockable AC Disconnect

Allowed Meter Adapter: None

Plans & docs

Placards

Electrical Stamp Required: No

Equipment Approvals: California Energy Commission

Meter Num Req SLD 3LD: No

ESID Num Req SLD 3LD: No

Electrical Diagram Notes: All Jobs [THE AC DISCONNECT IS LOCKABLE, TAGGABLE, VISIBLE BREAK, 24/7 ACCESSIBLE]

Website: link

Phone: (866) 634-6977

Other details

Revision Required: No

Mod Swap Requires Planset: Yes