Our Plan to Reduce Campus Carbon Emissions 80% by 2030
Chewonki is undertaking a series of projects aimed at reducing the carbon emissions associated with operating our campus. Most recently, the installation of a 420-panel agrivolatic solar array generates enough clean energy to meet our current electricity demand. This work builds on a long tradition of sustainable energy experimentation at Chewonki and moves us substantially closer to our goal of reducing campus emissions 80% by 2030.
Explore the sections below to learn more about the projects and plans behind this effort.
Our 2030 Decarbonization Plan
Reducing Chewonki’s carbon emissions means not only producing renewable electricity, but also rethinking how energy is used across campus. With increased solar capacity in place, the next phase of this work focuses on improving the efficiency of existing buildings and replacing legacy oil, diesel, and gasoline systems with electric alternatives.
Chewonki’s campus includes dozens of powered structures, creating many opportunities to reduce energy use through upgrades such as improved insulation, heat pumps, efficient lighting, and modern appliances. Over time, electrifying systems across campus—from building equipment to vehicles—will allow more of our daily operations to run on renewable electricity.
Planned projects currently include:
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Adding RAV4 plug-in hybrid vehicles and electric utility vehicles to the campus fleet
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Installing heat pumps and upgraded HVAC controls in campus buildings
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Installing on-demand electric hot water systems in residential buildings
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Replacing dining hall lighting with high-efficiency LEDs
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Installing heat pumps for heating and cooling in classroom and office spaces
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Upgrading and replacing oil appliances in residential housing
- Installation of agrivolatic solar array in the Eastside pasture to generate renewable electricity for campus operations.
Solar at Chewonki
In 2026, Chewonki installed a 380-panel 590 kW agrivoltaic solar array on the Eastside pasture. The system is generating enough electricity to meet Chewonki’s current campus demand while allowing the pasture to remain in use for grazing sheep. By producing renewable energy on site, we are significantly reducing our reliance on grid electricity and laying the foundation to electrify additional campus systems in the years ahead.
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380-panel, 590 kW solar array generating carbon-free electricity
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Dual-use agrivoltaic design that allows the pasture to remain in active use
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Roughly $70,000 - $90,000 in annual savings on purchased electricity
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Approximately $1.5 million in projected savings over the array’s 40-year lifespan
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Hands-on learning opportunities for camp and school programs
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$239,000 federal investment tax credit supporting the project
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Capacity for future expansion as additional campus systems are electrified
Our Eastside solar array will offset about 140 metric tons of carbon each year—but what does that actually look like? Here are a few ways to picture that impact:
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218,000 pounds of coal not burned
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44 tons of waste recycled
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14,561 gallons of gasoline saved
Agrivoltaics is the co-location of solar photovoltaic panels and agricultural activities. For Chewonki, this means sheep from Salt Marsh Farm will continue to graze beneath the panels, which will provide shade during warmer months, and help maintain healthy vegetation across the field.
Electrifying Campus
Beneficial electrification means replacing systems that rely on fossil fuels—such as oil, propane, diesel, or gasoline—with efficient electric alternatives powered by solar energy. As Chewonki generates more renewable electricity on campus, these systems can increasingly run on that power. Over time, this shift will reduce the emissions associated with heating buildings, running equipment, and transporting people across campus.
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Installing heat pumps for heating and cooling in classrooms and office spaces
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Upgrading HVAC systems and building controls
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Installing on-demand electric hot water systems in residential buildings
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Replacing propane and oil appliances in residential housing
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Upgrading lighting systems to high-efficiency LEDs
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Adding plug-in hybrid and electric vehicles to the campus fleet
- Converting campus homes to run entirely on clean electricity
A Living Laboratory
At Chewonki, the campus has always been part of the learning environment. Buildings, farms, forests, and shorelines all offer opportunities to explore how people live within natural systems.
Our energy infrastructure is part of that story as well. Systems like the Eastside solar array give students and participants a chance to see how renewable energy works in a real place—how electricity is generated, how buildings use it, and how choices about energy affect the land and communities around us.
By making these systems visible and understandable, the campus becomes a place where sustainability is not just discussed, but observed and explored in everyday life.
Get Involved
Thanks to the generosity of our community, we reached our fundraising goal for the 2026 solar array on the Eastside pasture!
In order to meet our 2030 decarbonization goals, continued support is needed for building efficiency upgrades, electrification of campus equipment, and improvements to our vehicle fleet.
If you are interested in partnering with Chewonki on this work, please consider making a gift online at chewonki.org/give. When asked for a designation, select “Other” and write in Energy Goals.
