Our Team

We are community energy enthusiasts who see energy efficiency and community-controlled clean energy as the first step toward relocalizing our economy. We have created CEF to support our communities in the process of building people-powered solutions to the energy crisis and climate change.

Cooperative Energy Futures is comprised of a Board of Directors and a staff team that handles the day-to-day operations of the cooperative. We rely heavily on grassroots leadership by current and potential members and community partners. We welcome volunteers; if you are interested in joining us, check out our Get Involved page.

Learn about our team:

Timothy Den-Herder Thomas | General Manager


Timothy has a background in energy democracy organizing and social enterprise. Timothy DenHerder-Thomas grew up in Jersey City NJ, which helped him make the connections between energy usage, pollution, poverty, social fragmentation, and environmental destruction. Timothy also helped found Grand Aspirations, which supports teams of youth innovators in 16 cities to create green economic opportunity for themselves and their communities through innovative energy efficiency, green industry, sustainable food, transit access, and clean energy solutions. Timothy is a co-convener of Minneapolis Energy Options (now Community Power), which has secured the nation’s first city-utility Clean Energy Partnership in Minneapolis.

Timothy engages in national climate action and energy democracy innovation as an Energy Action Coalition Council member, a participant in the REAMP network, and as a Minneapolis Global Shaper. Timothy is a Young People For Fellow, a Morris K. Udall Scholar, a Goldman Sachs Global Leader, and a recipient of the 2008 Brower Youth Award and the 2009 Mario Savio Award.

Bruce Konewko | Solar Operations and Marketing Director

Bruce has a professional background in sales and marketing, including solar PV site assessment and residential energy auditing. Bruce worked for 20 years  in sales and marketing in the residential home exterior industry for several decades prior to joining the CEF team. Bruce’s duties include residential and commercial solar sales, tabling and community outreach, and securing site control for Community Solar Gardens. Bruce manages CEF’s partnerships with property owners, solar contractors, and system designers.



Mary Kay Olson | Subscription Manager

Mary Kay Bio PicMary Kay brings outreach and operational administration skills to her role at CEF, where she manages the overall subscription process including working with our collaborating organizations such as Minnesota Interfaith Power and Light who are assisting in securing subscribers. Mary Kay has worked in a variety of organizations, starting in affordable housing, then following the emerging green building industry into construction.  She balances her CEF work currently with her work at a progressive church supporting the overall operations and facilities oversight of an historical St. Paul church campus.

Board of Directors

Jennifer Lang | Chair

Elected in April 2014, Jennifer Lang directs the member engagement committee for CEF. A professional violinist, she performs regularly with the MN Sinfonia and Lyra Baroque Ensemble and programs new and/or original works for her own solo recitals throughout the year. Jennifer is on faculty at the St. Paul Conservatory of Music, where she has a private studio of 17 students. She also oversees curriculum development and teaches in the conservatory’s Music For All program, reaching over 200 elementary students in St. Paul public schools and outlying suburbs. Jennifer is excited to be working with CEF to support the the necessary and vital shift to a clean energy economy and community-owned energy. Jennifer recently released her first publication,The Art of Wellbeing: A Resource for Health and Healing, which highlights the clean energy economy as part of the solution to global wellbeing.

Pouya Najmaie | Secretary

Pouya is a Masters Candidate at the University of Minnesota’s Hubert H. Humphrey School of Public Affairs. He is currently finishing his thesis for his Masters of Science, Technology, and Environmental Policy with a concentration in International Environmental Security Policy and Renewable Energy Policy. He has a B.S. from the University of Minnesota in Environmental Studies with a concentration in Law and Policy. Pouya has extensively studied U.S. and Minnesota renewable energy policy and has a keen interest in the intersection of environmentalism and social justice issues. He believes these two issues are inextricably linked and one cannot be achieved without the other. Pouya was elected to the board in April of 2016.

Mary Kay Olson | Treasurer

Mary Kay Bio PicMary Kay Olson, elected to the Board April 2015, is excited to join in a wonderful community-based effort to claim renewable energy for all. Mary Kay has worked in a variety of organizations, starting in affordable housing, then following the emerging green building industry into construction.  With the downturn, she developed an interest first in making buildings more efficient, leading her, after a conversation with a friend working now in community solar, to a “cold call” to Timothy and volunteering since March 2014 with CEF.  She has contributed her varied skill set to the cooperative’s community solar and board work, and is now an integral part of the new collaboration between CEF and Minnesota Interfaith Power and Light, where she is helping promote “just” community solar through faith-based communities.

Ralph Jacobson

ralphpicRalph is Founder and CEO of Innovative Power Systems, and is a NABCEP certified installer for both solar electric and solar thermal systems. For the past 25 years, he has been creating opportunities in solar for himself and others, by growing a business and serving on the boards of the MN Renewable Energy Society and the MN Solar Energy Industry Association. In 2014 Ralph was honored with a lifetime achievement award by MnSEIA for his long term commitment to renewable energy and the solar industry in Minnesota. Ralph was elected to the Board April 2015.


Ahmad Kian

Ahmad is the CEO of Apadana Energy, a full-service designer and implementer of solar energy systems for commercial, industrial, and residential customers. With over 20 years of experience in engineering, operation and global strategic procurement, Ahmad leads a team of engineers and solar energy experts that deliver best-of-breed solar technology solutions. He is also a co-founder of Apadana LLC which owns and operates affiliated businesses that focus on optimizing facility energy consumption with major emphasis on elimination of mercury filled florescent bulbs. Ahmad also serves on the board of directors of Rolling Ridge Estates.


Jeff Roberts

Jeff first became aware of Cooperative Energy Futures when he became an early subscriber to the Edina, MN Community Solar Garden. After learning more about its mission, he volunteered to run for a Board position and was elected in April 2017. He is retired after holding positions in information technology, marketing and operations management working for a multi-state credit union and a construction equipment distributor. While at the equipment distributor one of his projects was monitoring systems for alternative energy generation utilizing methane gas from landfills.

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