Tag Archive for: farmland

Farmland, Family, and the Future of Solar Energy

By Stephanie Hince, AES

Although Grafton, Massachusetts, is just an hour west of Boston, life there is very different. Grafton is a friendly country town with a lovely historical feel. It has been a farming community for centuries, where thriving cotton, grist, and paper mills once dotted the landscape.

Whereas the Quinsigamond River once powered numerous mills, a newly constructed solar farm owned by AES is incorporating two Grafton traditions: clean energy and agricultural production. Let’s explore how our solar project brings together key stakeholders to help protect farmland in Grafton and beyond.

Grafton Solar’s On-site Agricultural Production

This solar installation is located on Knowlton Farm, a family farm operating for over 150 years. Instead of merely leasing fallow farmland for the project, the solar farm was designed with on-site agricultural production and research in mind from the start.

Grafton Solar is a 2-megawatt community solar farm with a 1.4-megawatt battery energy storage system. Many stakeholders have come together with a shared vision of clean energy, food production, and learning, which is making this endeavor a success.

Our current and prospective project partners include the U.S. Department of Energy, Massachusetts Department of Energy Resources, Massachusetts Department of Agricultural Resources, UMass Amherst, American Farmland Trust, and Cornell University. In December 2020, AES acquired the Grafton Solar project from BlueWave.

What Made This Solar Farm Unique from Day 1

An agricultural plan was created early in the design phase as a collaboration between Paul Knowlton, a fifth-generation farmer and current operator of Knowlton Farms, Iain Ward of Solar Agricultural Services, and BlueWave Solar. Today, that plan has come to fruition. With a keen eye, passersby will notice something very different at our project site.

Borrego, the construction contractor, elevated the solar modules to a height of 8 to 14 feet and created large inter-row spacing to allow cattle grazing and access for farm equipment. The agricultural integration component of the project began last May with the planting of squash and lettuce, as well as cattle grazing.

There is still much to be learned. Solar developers and farmers need a greater understanding of how to make widespread use of agrivoltaics cost-effective and practical. Thus, Grafton Solar provides opportunities to advance its application on other project sites and by other solar developers across the U.S.

All photos courtesy of the AgriSolar Clearinghouse

Grafton Solar is Now a Living Laboratory

We intentionally reserved a section of the project area for new and existing research partnerships – Grafton Solar is an official hub of activity for learning about agrivoltaics. Research partners, UMass Amherst and the American Farmland Trust, are working to establish site trials to assess crop productivity, soil health, and micro-climatic conditions, thanks to a grant from the U.S. Department of Energy Solar Energy Technology Office (SETO). Once available, research information will be made publicly available so that others in the solar and agricultural industries can learn and benefit from their findings.

Solar Incentives Helped Make This Innovative Project Possible

In Massachusetts, revenue for solar projects is provided through the SMART program, which starts with a fixed compensation rate for projects. A project can obtain different adders based on project attributes, which increases the rate and therefore the benefits to the project developer and landowner. Some of these adders include making a project a community solar farm, adding battery storage, or having a dual-use agricultural component. Grafton Solar does all three.

Community solar projects expand access to renewable energy and allow subscribers like households, businesses, educational institutions, municipalities, and others to experience the same benefits of solar power without having to install a solar array on their own property. Battery storage helps to mitigate the intermittent nature of solar energy by storing solar energy when production is high and electricity demand is low and promotes reliable, carbon-free power by making solar energy available when utility companies need it most. Thus, it reduces the need to use more polluting power plants when power demand is high.

Grafton Solar is built around the community solar model, incorporates battery storage, and is supporting a legacy of agricultural production at Knowlton Farm – a win-win-win. By leveraging Massachusetts’ innovative state-level solar incentives (which includes the only rate-adder for agrivoltaics in the U.S.), Grafton Solar is delivering multiple co-benefits to the community and showcasing that solar projects can do much more than produce power on site.

Protecting Farmland When Developing Solar Energy Projects

Grafton Solar is AES’ first agrivoltaic site in the Northeast and is consistent with our vision to provide the smarter, greener energy solutions the world needs. According to a report by the American Farmland Trust, the U.S. lost or compromised 2,000 acres of farmland and ranchland every day from 2001 to 2016.

If this trend continues, an area nearly the size of South Carolina will be lost between 2016 and 2040, which could be detrimental to food security. Many farmers across the U.S., like Paul Knowlton, are looking for new revenue streams and ways to keep family farms operating for future generations. In addition to producing food, family farms are also about preserving a way of life.

At AES, we understand the importance of protecting farmland when integrating renewable energy projects into the landscape. Solar energy development and farm viability can go hand-in-hand when taking a thoughtful, dual-use approach.

Using Partnerships to Maximize Opportunities

We understand the importance of land and are actively working to create synergies between renewable energy development and agricultural land use. In addition to successfully co-locating crop growth and grazing at Grafton Solar, we have implemented active sheep grazing on thousands of acres of land at utility-scale solar sites, and we are participating in research partnerships in various regions across the U.S. to better understand how we can harvest clean energy and food from the same land.

We know that the success of our company is only as strong as the partnerships within the communities where we operate, so we develop, build, and manage projects that maximize value to a variety of stakeholders. Ultimately, we need both clean energy and productive farmland, not just one or the other.

Grafton Solar provides an excellent opportunity to collaborate with the research community and the Knowlton family to further our understanding of how to make agrivoltaics practical and more widespread. The project symbolizes preserving a way of life that spans many generations while embracing innovative clean energy technologies that promote food security, reliable energy, and a cleaner environment.

Solar and The Future of Farmland

By David Murray

In the 1940s, my great-grandfather purchased a small farm in the Hudson Valley of New York. He raised chickens and grew tomatoes, strawberries, and other crops until he passed away. My extended family treasures this farm, but with every passing year, maintaining it becomes less economic. The temptation to sell the property gets stronger.

Thousands of small farmers across America share my family’s story. The agriculture industry is increasingly consolidated, moving to a large, corporate business model. Farming technology has advanced rapidly, leading to crop prices are driven low. Small, independent farmers are often pushed out of the market. Meanwhile, real estate development in rural areas and suburban sprawl creates a pull: from 2001 to 2016, the U.S. converted 11 million acres of farmland to non-agricultural uses, with low density residential land use as the primary driver.

On one hand, the trend is unsurprising: as we become more efficient at growing food, we require less land – and fewer people – – to farm. On the other hand, small farmers play an important role in our food system, and families like mine should be able to pass a successful operation down to the next generation. For many families, solar energy provides that opportunity.

Leasing land to a solar developer provides stable, consistent income, helping some farmers avoid having to sell the land, which often gets converted to housing, commercial real estate, or other uses. In this manner, solar energy protects against what conservation organizations fear the most: low-density, suburban sprawl.

Solar energy development can also preserve the land: after approximately 30 years, the next generation can convert the property back to agricultural use. Finally, many farmers are already accustomed to supporting America’s energy needs: over 30 million acres of farmland are used to grow corn for ethanol.

Of course, farmers need to think long term: what are the impacts to the land from solar development? One benefit is nutrient runoff: solar facilities require less fertilizer than most crops; thus, nutrient runoff from solar facilities is typically less than the pre-existing agricultural use. Native grasses and legumes also mitigate erosion and improve water quality by intercepting sediment and nutrients. Solar development also cuts down on pesticide and insecticide use. Herbicide may be used during the site preparation process, but more sparingly once the facility is in operation. For arid regions, solar reduces water use – leaving an increasingly valuable resource to neighboring farming operations.

However, for families like mine that want continue using our farm to grow food and feed, agrivoltaics provides an exciting opportunity. This is why the American Clean Power Association is happy to work with the National Center for Appropriate Technology’s AgriSolar Clearinghouse to make agrivoltaics an increasingly financially feasible option for farmers.

Solar grazing is a bright spot. While letting sheep into an active power plant comes with a unique set of challenges, in certain cases it can be cheaper than a traditional landscaping crew. Data from the American Solar Grazing Association shows smaller projects are more likely to use solar grazing, but the association recently noted that a 200-megawatt (MW) solar project is slated to incorporate sheep into its vegetative management plan. For sites where solar grazing works, it can be an excellent win-win-win.

In the meantime, the industry is working to bring down costs of other forms of agrivoltaics, such as crop production underneath panels. A key challenge is raising the height of solar panels to accommodate farming. Unfortunately, raising solar panels significantly increases costs, as the piles need to be taller and driven further into the ground. Expensive machinery – such as a scissor lift – is needed to install piles deep enough to ensure they are secured properly to resist heavy winds. These lifts are not designed for use on solar sites. Furthermore, this process requires more labor to successfully deploy the equipment. This is an example of a major challenge that ACP is excited to work with NCAT on to make agrivoltaics more widespread.

We are aiming for a future where many types of agrivoltaics can scale, while ensuring that solar energy remains one of the cheapest forms of new energy generation. Thus, ACP will continue engaging with NCAT to identify ways to bring down the costs of agrivoltaic projects and continue to foster partnerships between the solar industry and agriculture sector.

David Murray is the Director of Solar Policy at the American Clean Power Association.

Indiana Sheep Farm Goes Agrisolar

Local farmers in Columbus, Indiana, have partnered with Hoosier Energy to create clean energy by installing solar panels over grazing land on a local sheep farm. Of Hoosier Energy’s 10 solar arrays, this is the first farm to have an array of solar panels on local farmland. 

“We’re able to continue to use it as an agricultural value by partnering with a farmer on using sheep to graze the site, so it’s really good because we get … more benefit than just solar. It’s actually an agricultural benefit to the community as well,” said John Cisney, a technical analyst at Hoosier Energy.  

The farm and solar partnership is a win-win situation. Sheep continue to graze the land but with the solar panels in place, there is an added benefit of producing clean energy, which benefits the environment. “It’s cleaner. There are no CO2 emissions. It’s sustainable. It’s renewable,” said Curt Durnil, communications director at Hoosier Energy. 

These panels are capable of harnessing energy from the sun throughout the day, as they follow the sun from east to west, unlike a typical solar panel on a residential home that operates in a fixed position. 

“[W]hat that allows us to do is capture more energy from the sun, up to 15-20% more in a year’s time period than if they were just fixed facing the sun throughout the day,” Cisney said. 

To learn more about the Agrisolar farm in Indiana, click here.