DLC - Duquesne Light Company

Pennsylvania 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 If something here is out of date or missing, tell us and we'll fix it.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 TypeMonthly
Supply Side Taps AllowedYes
Line Taps AllowedYes
Load Taps AllowedYes

Net metering & export

Net Metering Allowed
Yes
NEM Type
Monthly
TOU Utility
No
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

"Any excess kilowatt hours shall continue to accumulate for the 12 month period ending May 31. On an annual basis, the Company will

compensate the customer-generator for kilowatt-hours received from the customer-generator in excess of the kilowatt hours delivered by the Company to the customer-generator during the preceding year at the Company’s Price To Compare consistent with Commission regulations."

Rebates Offered
Yes
Deregulated
Yes

Interconnection & taps

Approval Req To Install
Yes
Supply Side Taps Allowed
Yes
Line Taps Allowed
Yes
Load Taps Allowed
Yes
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
Yes

System size & offset

System Size Restrictions
50
System Size Restriction Type
AC kW
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Type
No Restrictions
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
System Offset Notes

50kW for residential and 3MW for commercial

Cannot exceed 110% on TPO

Based on AC

Offset Calc Tool
Historical Usage

Metering & disconnect

Production Meter Required
No
Production Meter Position
N/A
Production Meter Labeling
N/A
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

Fencing/Obstructions must be called out

We require Utility Accessible Disconnects to adhere to the following: outside of any residential structure, easily accessed in the event of an emergency without customer contact (i.e., not behind a locked fence)

SLD Reqs

INV - AC Disconnect - MSP - UM


Please list disconnect on diagram as “utility accessible AC disconnect”


DLC allows supply-side taps, but they must be BEHIND the utility meter via a tap box or similar equipment, or the supply side of the customer’s panel

Electric Service Reqs

"(Voltage Magnitude and Flucuation - PG 17, Section 1) Pennsylvania PUC Electric Regulations require that voltage variations not exceed ±5% of nominal system voltage for longer than one minute and a total voltage variation of ±8% from minimum to maximum during normal system operation


(Grounding Electrode Conductors - PG 20, Section B) The grounding electrode conductor size shall be not less than No. 6 copper or aluminum. Larger services shall have grounding electrode conductors sized as specified in Article 250- 94 of the National Electrical Code (NEC). NEC Article 250-23 shall determine where the grounding electrode conductor is connected to the grounded service conductor. The meter enclosure (base) shall not be used for this connection because it is not accessible when sealed.


(PG 21, Section 8) Transformer Configuration: Transmission generator step-up transformers"

Install Reqs

Duquesne Light will install a net meter at no cost to the customer. A net meter is typically installed within 7-10 business days.

A customer-generator facility used for net metering shall be equipped with a single bi-directional meter that can measure and record the flow of electricity in both directions at the same rate. A dual meter arrangement may be substituted for a single bi-directional meter at the Company’s expense.

Placards

Placard required when Utility Disconnect is not next to Utility Meter

Need to show location of Utility Accessible Disconnect

Rate Schedule Link
link
Website
link
Phone
(412) 393-7100
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with DLC - Duquesne Light Company before you rely on this. The useful move: if an installer says you need a main panel upgrade, ask how these tap and interconnection policies were considered first.