Highlights

  • Developed a strategic, integrated, multi-stakeholder approach to solar market development in Duluth, Minnesota to maximize impact and installations.
  • Created and implemented a five-year solar market transformation plan for Duluth, establishing solar baseline development goals for residential rooftop, community, institutional, and utility sectors.
  • Incorporated energy generation into the Duluth Comprehensive Plan and incorporated solar practices into the city housing plan.
  • Developed a framework for solar installations in a historic neighborhood and identified appropriate brownfield development sites.
  • Advised and assisted in residential, commercial, and community sector solar project management with the goal of 1 MW of interconnected solar PV in Duluth by the end of 2017.

Background

Northern Minnesota has an emerging solar market with high soft costs and few solar installations. The state has higher-than-average electricity rates, yet portions of Minnesota lag behind in growth of grid-tied solar PV capacity. However, according to the National Renewable Energy Laboratory, the state has a potential rooftop capacity of 12,000 MW—enough to produce approximately 21% of the state’s electricity needs—and ground-mounted utility-scale solar PV could provide 150 times the state’s current demand. To date, solar development in Duluth has been hampered by a lack of process clarity in permitting, inspections, and interconnections, as well as high soft costs driven by the custom nature of projects, resulting in a lack of economy of scale.

Despite these challenges, Duluth has several key factors that support the advancement of its solar PV market:

  • General support and interest from the community.
  • Pilot projects to integrate solar for historic homes and new housing developments.
  • Grassroots efforts to use solar to take a pilot faith-based energy efficiency program to the next level.
  • Engagement in creating energy generation zoning overlays in the newest revision of Duluth’s comprehensive plan.
  • Initiation of the first Property Assessed Clean Energy financing agreement in northern Minnesota between the City of Duluth and the St. Paul Port Authority.

These developments—combined with recent solar legislation requiring Investor-Owned Utilities (IOU) to generate 1.5% from solar, with 10% of that coming from small (<20 kW) distributed generation, by  a promising opportunity for developing a solar market transformation.

 

Stakeholder Engagement

The Local Energy Matters project is a strategic, integrated, multi-sector approach to solar market development in Duluth to maximize impact and installations. Ecolibrium3 created the Solar Market Advancement Resource Team by gathering together stakeholders from government, business, finance, utilities, and universities. Ecolibrium3, together with the City of Duluth, invited these stakeholders and local residents to a two-day community energy charrette, which included a public session to educate residents on state-based energy incentive deadlines. The charrette resulted in a new partnership with the University of Minnesota Duluth Engineering Department to pilot student-led efficiency analysis and solar design for businesses in low-income neighborhoods. Ecolibrium3 also worked with Minnesota Power and community stakeholders to advance conversations on community solar program development.

Assessing Solar Potential in Duluth

Ecolibrium3 created a framework for developing demonstration projects in the residential rooftop, community solar, commercial, industrial, and institutional sectors by establishing a baseline analysis of solar in Duluth in the 10 years prior to the start of the project. The team used this historical data to combat local perceptions on cost and availability, assumed to be the primary barriers to solar PV adoption in Duluth.  In 2015, Ecolibrium3 released two white papers establishing a baseline solar market analysis for Duluth and reporting on the solar market landscape—including installed solar capacity by sector, installed cost history, financing methods, and barriers in Duluth—in order to identify the best areas of focus to advance the Duluth market.

The Ecolibrium3 team digitized building footprints in the city and built a value-added solar map application for city neighborhoods. They also developed an interactive, public-facing web tool providing detailed information to Duluth’s citizens and informing local home and business owners of potential solar PV opportunities at the individual building level. The tool provides guidance to the project team and city policy makers as they consider the solar potential in future planning opportunities.

Through the Lincoln Park Shines! program, Ecolibrium3 linked Duluth businesses with local university students to assess the potential for renewable energy projects at their places of business. Working with these businesses was a crucial step in identifying challenges and opportunities for commercial solar in Duluth. The program provided students with hands-on experience in the field and enabled the businesses to engage on the topic of energy at a high level.

Ecolibrium3 also partnered with local institutions to explore the potential of solar+storage in Duluth to build local resilience. During a major storm that knocked down power lines and flooded neighborhoods, the Hartley Nature Center (HNC) was forced to cancel a week of summer camp, resulting in $14,000 in losses. Ecolibrium3 worked with HNC to retrofit their solar array to include battery backup, helping ensure catastrophic weather events will not impact future operations. This initiative, the first solar+storage installation of its kind in Northern Minnesota, inspired Duluth residents to consider adding storage to their solar systems.

Resources

Report:
Local Energy Matters: Solar Market Landscape Report Local Energy Matters: Solar Market Landscape Report
Author:  Ecolibrium3

A report examining the local solar market including installer availability and quality, financing, development process, hardware, code/policy, solar mapping, and cost.

Report:
Local Energy Matters: Baseline Solar Market Analysis for Duluth, ... Local Energy Matters: Baseline Solar Market Analysis for Duluth, MN
Author:  Ecolibrium3

Duluth’s baseline analysis of installed solar capacity by sector, installed cost, financing, and barriers intended to identify best areas of future focus for advancing the local market.

Case study:
Resilient Power Retrofit: How a Minnesota Nature Center Became ... Resilient Power Retrofit: How a Minnesota Nature Center Became a Solar+Storage Community Shelter
Author:  Clean Energy Group

The story of Hartley Nature Center and how they reduce electricity costs, provided public education, and improved community energy security by adding storage to an existing PV system.

Implementation Plan

Throughout 2017, the cross-sector project team will create and begin implementing a five-year solar market transformation plan for the city, which will establish solar development goals for residential rooftop, community, institutional, and utility sectors. The plan will also include a solar generation overlay for zoning, community-scale finance programs, and streamlined permitting and inspection processes, and will ultimately result in the implementation of a community-based project modeled after the successful Duluth Energy Efficiency Program. During the stakeholder process, the project team will work with the local IOU to find potential solar installations that will help the utility meet or exceed their solar portfolio standard and establish a Value of Solar Tariff case for Northeastern Minnesota. The project team will engage in revising Duluth’s Comprehensive Plan and year-long, city-designated land use planning process to incorporate energy generation. In addition, the project will review and incorporate solar practices into the city housing plan, develop a framework for solar installation in a historic neighborhood, and identify appropriate brownfield development sites. The cross-sector five-year solar transformation plan will adapt best practices from the region with the goal of reducing total installed costs by 50% from the measured baseline.

The project team will later work to implement the solar transformation plan to catalyze residential and commercial participation and establish community solar installations with the goal of reaching 1 MW in capacity by the end of 2017. The team will produce replicable demonstration projects, which include integrated design, construction, and financing packages for implementation across multiple sectors.