Delmarva Power (DE)

Delaware Utility Interconnection & net metering rules

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 If something here is out of date or missing, tell us and we'll fix it.

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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
Yes
Post Solar Billing Method
Net Metering
Rebates Offered
Yes
Deregulated
Yes
Allows Standby
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
0
System Size Restriction Type
No Restrictions
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Type
Percentage
Offset Value
110
Offset Calculation Basis
Historical
Offset Calculation Period
12
Industry Standard Watts Sqft
2
System Size Justification
Load Justification
System Offset Notes

The system capacity can be up to 110% of your 12-month historical energy consumption.

Load Justification required when customer has less than 12 months usage

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


Here are highlights of the Delmarva (DE) Green Energy Program:

-- 70% of the annual solar path’s area must be shade free to be considered for a grant.

-- Optimum orientation is 180°. However, the program accepts orientations between South of due East and South of due West (azimuths between 90° and 260°).

-- Systems with arrays oriented North of due East and North of due West are not eligible for a Delmarva (DE) Green Energy Program grant.

Website
link
Phone
(866) 634-5571
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Delmarva Power (DE) 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.