Solar Photovoltaic Systems - Best Practices for Local Governments

DVRPC works with national, regional, and local partners to encourage growth of the solar energy market in the region. Benefits to growing solar energy include, reduced greenhouse gas emissions, fewer local air pollutants, more jobs added to the regional economy, and more stable energy prices. An area of focus for DVRPC's solar work is to promote the reduction of "soft costs"associated with installing solar photovoltaic (PV) systems. Soft costs are the non-hardware costs that include permitting fees, inspection fees, customer acquisition, installation and utility interconnection. Soft costs can account for up to 64% of the total installed cost of a rooftop PV system, and represent an increasing share of overall solar installation costs. Because of the permitting process and local land use control, local governments can be instrumental in reducing the soft costs associated with installing solar. Local governments can decrease the difficulty, cost, and time required to install solar PV by adopting zoning, permitting, and inspection practices that are supportive of solar PV.

Please see below for resources that support solar PV. These resources were developed with the assistance of the U.S. Department of Energy's SunShot program, through which DVRPC received funding under the Solar Ready II project and SolSmart.

SolSmart Program for Local Governments

SolSmart is a national designation program that provides a framework for municipalities and counties to reduce soft costs and take action to become more supportive of solar PV in their communities. Local governments that achieve the appropriate actions under SolSmart become designated as "solar friendly". Please see for additional resources that support the reduction of soft costs. DVRPC has served as a SolSmart Advisor to 17 local governments in the region. A list of those communities, the status of their designation, and the actions that they have taken, are listed below.

Zoning for Small-scale (rooftop or ground mount) Solar PV

Permissive zoning for solar PV should be clear and transparent. It should not be overly restrictive or contradictory to the nature of solar PV energy systems. It should promote safe and sound community development. Examples of municipalities that have adopted permissive zoning are:

DVRPC's Solar Renewable Energy Ordinance Framework

Developed with DVRPC's county, municipal, and industry partners, DVRPC's Solar Renewable Energy Ordinance Framework is a resource for municipalities as they develop and update ordinances to govern the siting of small-scale renewable energy systems in their communities. This document is part of DVRPC's Renewable Energy Ordinance Framework series. This framework provides a menu-like approach to regulating solar PV at the local level. Municipalities can identify ways to regulate solar PV in their zoning codes, subdivision codes, and other regulations and ordinances in a way that specifically aligns with their local land use and community goals. This framework allows municipalities to choose the best options for regulatory language that coincides with their community's goals.

DVRPC's Solar Renewable Energy Ordinance Framework [0.6 MB pdf]

SolSmart Resources:


Solar friendly permitting is simple, transparent and efficient. This usually involves combining all permitting applications (building and electrical) into a unified application, standardizing applications across the region, and reducing permitting costs to only what is necessary to cover staff time.

Permitting checklists are a great way to simplify and clarify the process of applying for permits when installing solar. The sample checklists below can be modified to reflect your municipality’s current permit requirements:

Several municipalities throughout the region have created checklists:

Streamlined solar permitting applications help lower the installed cost for solar PV for the applicant and save municipalities time and money on review and inspection processes. When a process is simplified (one application as opposed to two or three) and clearly laid out, the number of accurate permit applications increases, minimizing review time for the municipalities, and lowering the installed cost for the applicant.

  • Sample Solar Permit Application [0.2 MB pdf]
    • This document is a template solar permit application that combines both building and electrical permits that residents and businesses are typically required to obtain prior to installing a solar PV system. This document can be modified to reflect your municipality's specific permit requirements.

Examples from the region include:

Draft Permitting Guidance [3.5 MB pdf]: DVRPC has worked with municipalities to develop a standardized and streamlined permit and inspection process for small-scale solar PV installations in Greater Philadelphia. This document is a working draft that will be updated over time.

For more information:

Other SolSmart Resources:

Fire Safety

Training first responders to deal with solar PV installations in the event of an emergency is important to keeping both residents and first responders safe. Trainings often consist of what to expect from live panels, how to turn them off, and how best to deal with them in the case of fires within the home.

Fire Safety Training from July 12th, 2017 at the Montgomery County Public Safety Training Campus [9 MB pdf]

Other SolSmart Resources:

Solarize Campaigns

Solarize is a community-driven outreach campaign and support system to assist residential and commercial customers overcoming financial and logistical barriers to going solar. See two regional examples of Solarize campaigns below:

Solar Ready Construction

Solar Ready construction checklists are tools to inform developers of building orientations and designs that allow for easier installation of solar PV in the future.

Delaware Valley Smart Growth Alliance: Solar Ready Construction Checklist [ MB pdf]

Other SolSmart Resources:

Rooftop Solar Ready Construction Guidelines - Ohio-Kentucky-Indiana Regional Council of Governments

SolSmart Communities

17 communities in Greater Philadelphia have committed to achieving SolSmart designation. DVRPC has worked with these communities under the SolSmart Advisor program. This program selects an Advisor to provide communities with free, tailored technical assistance to address their solar goals. DVRPC was selected in 2017 to advise eight communities. DVRPC is currently working with nine other communities to achieve SolSmart designation. See the results of these efforts and other examples of solar readiness accomplished by these communities below.

Click a community on the map to jump to their section in the drop-down menus below.

Designation Level

  • Pending
  • Bronze
  • Gold

Cohort 1 - January through June 2017

Cohort 2 - November 2018 through July 2019

  • Bordentown City, NJ
  • Camden County, NJ
  • Doylestown Borough, PA
  • Haddonfield Borough, NJ
  • Kennett Square Borough, PA
  • Lansdowne Borough, PA
  • Millbourne Borough, PA
  • Montgomery County, PA
  • West Windsor Township, NJ