Dover Public Utilities - Green Energy Program Incentives

May 29, 2015


NOTE: Starting Nov 25, 2013 City of Dover PV grants programs have been suspended for revision.

Delaware's municipal utilities provide incentives for solar photovoltaic (PV), solar thermal, wind, geothermal, and fuel cell systems installed by their electric customers. Eligibility is limited to systems that are intended to supply on-site energy needs. The green energy programs offered by the state's municipal utilities occasionally vary from city to city. The Dover Green Energy Incentives program is unique in that the incentive levels and limits are distinctly different from those offered by the other municipal utilities, as well as those offered by Delmarva Power and the Delaware Electric Cooperative. For information on the incentives offered by other utilities, please visit the DSIRE Delaware page. The incentives offered in Dover are detailed below.

Solar Thermal (Domestic Hot Water, Radiant Heat): $1.00 per annual kWh saved, up to $2,500 for residential systems and $7,500 for non-residential systems

Wind: The incentive is $1.25/watt (W) for the first 5 kilwatts (kW) of capacity (0-5 kW), $0.75/W for the next 5 kW (5-10 kW), and $0.35/W for the next 40 kW (10-50 kW) with a maximum incentive for all sectors set at $2,500

Geothermal Heat Pumps:$800/ton for the first two tons of and $700/ton for additional capacity, up to $3,000 for residential systems and $10,000 for non-residential and non-profit systems.

Fuel Cells: 20% of installed costs, up to $7,500 for residential systems and $10,000 for non-residential and non-profit systems.

Systems are subject to a variety of equipment, installation and warranty requirements, including limitations on system orientation and shading for solar energy systems. In addition, to encourage energy conservation, an energy audit requirement has been instituted for both residential and non-residential customers as a condition of eligibility. The Delaware Energy Office processes applications and conducts technical reviews for this program. The program rules do not specify the ownership of renewable energy credits (RECs) associated with system energy production; however, net metering customers in Delaware retain ownership of RECs unless they voluntarily relinquish such ownership. More information about the program is included in the program manual.

Under the 2005 Delaware renewable portfolio standard (RPS) legislation, municipal utilities were allowed to opt out of the RPS schedule if they met certain other requirements. One such requirement was that they contribute to the existing Green Energy Fund for investor-owned utilities or create their own green energy fund supported by an equal surcharge (i.e. $0.000178/kWh). All of Delaware's municipal utilities opted out of the RPS requirements and established their own green energy funds.

In 2010 the Delaware RPS was amended by SS 1 for S.B. 119 and the section (26 Del. C. § 363) detailing the obligations of electric cooperatives was slightly revised. While these amendments change several other opt-out requirements, the provision mandating green energy fund contributions in the event of an opt-out remains unchanged.


Program Overview

Implementing Sector: Utility
Category: Financial Incentive
State: Delaware
Incentive Type: Rebate Program
Web Site:
Administrator: Delaware Department of Natural Resources and Environmental Control
Start Date: 2007
Eligible Renewable/Other Technologies:
  • Solar Water Heat
  • Solar Space Heat
  • Wind (All)
  • Geothermal Heat Pumps
  • Wind (Small)
  • Fuel Cells using Renewable Fuels
Incentive Amount: Solar Thermal: $1.00/annual kWh displaced
Wind: $0.35 - $1.25/W
Fuel Cells: generally 20% of installed costs, except 35% for non-profits
Geothermal Heat Pumps: $700 - $800/ton
Maximum Incentive: Solar Thermal: $2,500 for residential, $7,500 for non-residential, non-profits
Wind: $2,500
Fuel Cells: $7,500 for residential, $10,000 for non-residential, non-profits
Geothermal Heat Pumps: $3,000 for residential, $10,000 for non-residential, non-profit
Eligible System Size: Wind: 500 W minimum
Equipment Requirements: Systems must carry a full five-year warranty and meet applicable UL, IEEE, and NEC standards; solar thermal systems must be SRCC certified (OG-300 for residential and OG-100 for non-residential); geothermal heat pumps must have a minimum EER of 18.0 and COP of 3.6
Installation Requirements: On- and off-grid systems are eligible; systems must be installed by a participating contractor; solar PV and solar thermal systems must meet orientation, shading, and aesthetics requirements; wind energy systems may be reviewed for wind resource adequacy
Ownership of Renewable Energy Credits: Customer-generator


Name: 26 Del. C. § 363
Date Enacted: 07/01/2005
Effective Date: 06/01/2006
Name: Municipal Utilities' Green Energy Fund Program Regulations
Effective Date: 03/01/2011 (as amended)


Name: Program Information - Green Energy Program
Organization: Delaware Department of Natural Resources and
Address: 100 W. Water Street, Suite 5A,
Dover DE 19904
Phone: (302) 735-3480

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.