In this paper, the researchers applied the InVEST modeling framework to investigate the potential response of four ecosystem services (carbon storage, pollinator supply, sediment retention, and water retention) to native grassland habitat restoration at 30 solar facilities across the Midwest United States.
Tag Archive for: AgriSolar
The AgriSolar Clearinghouse, developed by the National Center for Appropriate Technology (NCAT) is launching a series of hands-on field trips to see firsthand the benefits of co-locating sustainable agriculture and solar energy. The Follow the Sun Tour’s first stop is April 5 at Biosphere 2 in Oracle, Arizona.
“AgriSolar allows us to harvest the sun twice. As America’s appetite for sustainably grown products and renewable energy continues to increase, agrisolar has the potential to provide both resources,” says NCAT Energy Program Director Dr. Stacie Peterson. “The Follow the Sun Tour will visit agrivoltaic sites around the country that are seeing success with things like co-located grazing, habitat rehabilitation, crop production, and cutting-edge research. Our national network of partners includes the world’s leading agrivoltaic experts and we are excited to connect the public with partners like Dr. Greg Barron-Gafford and provide the opportunity to tour his research sites.”
Join Peterson and leading agrivoltaic researcher Dr. Barron-Gafford on a tour of the agrisolar research underway at Biosphere 2. Biosphere 2 is the world’s largest controlled environment dedicated to understanding the impacts of climate change. Operated by the University of Arizona, the facility includes 3.14 acres, with 7.2 million cubic feet sealed underneath glass domes. Barron-Gafford and his team are investigating the potential for reintroducing vegetation into the typical PV power plant installation in drylands. His research shows that this approach may lead to increased renewable energy production, increased food production, and reduced water use. For interested participants, the tour will continue to the Manzo Elementary School Agrivoltaic site in Tucson.
Space is limited. RSVP is required.
NCAT created the nation’s first AgriSolar Clearinghouse to connect farmers, ranchers, land managers, solar developers, and researchers with trusted, practical information to increase the appropriate co-location of solar and agriculture. It’s funded by the U.S. Department of Energy. The AgriSolar Clearinghouse features a library of more than 400 peer-reviewed articles, a media hub featuring videos, podcasts, and relevant news, and a user forum to directly connect people interested in agrivoltaic development in real-time. Partner organizations include leading universities, the Smithsonian, sustainable agriculture and energy advocates, the Center for Rural Affairs, and the national energy laboratories.
The benefits of co-locating solar with appropriate agricultural land include producing food, conserving ecosystems, creating renewable energy, increasing pollinator habitat, and maximizing farm revenue.
The AgriSolar Clearinghouse’s free Follow the Sun Tour will stop at about a dozen agrivoltaic sites over the next two years. Future field trips will include visits to sites in Colorado, Massachusetts, Minnesota, Oregon, New York and more. Sign up for the AgriSolar Extra to be sure you know about upcoming Follow the Sun Tour stops.
Indiana communities can now voluntarily adopt regulations qualifying them as solar and wind-ready communities, according to a recent news story by PV Magazine. This change is expected to create thousands of jobs in the clean energy industry, cut development times, and lower overall costs.
Sean Brady, Clean Grid Alliance’s State Policy Manager, told PV Magazine, “We hope that counties in Indiana will use these new standards, but if not, we look forward to continuing to work with stakeholders to explore ways to grow the state’s energy economy.” Indiana is expected to increase its solar capacity to 6.75 GWs in the next five years, according to the story. Roughly 4,657 MW of clean energy is in the advanced stages of development in Indiana, and 1,218 MW under construction, according to the American Clean Power Association.
To learn more about Indiana’s clean power development and the new law it passed to support renewable development, read the PV Magazine here.
Decomposition models of solar irradiance estimate the magnitude of diffuse horizontal irradiance from global horizontal irradiance. These two radiation components are well-known to be essential for the prediction of solar photovoltaic systems performance. In open-field agrivoltaic systems, that is the dual use of land for both agricultural activities and solar power conversion, cultivated crops receive an unequal amount of direct, diffuse and reflected photosynthetically active radiation (PAR) depending on the area they are growing due to the non-homogenously shadings caused by the solar panels installed (above the crops or vertically mounted). It is known that PAR is more efficient for canopy photosynthesis under conditions of diffuse PAR than direct PAR per unit of total PAR. For this reason, it is fundamental to estimate the diffuse PAR component in agrivoltaic systems studies to properly predict the crop yield.
Solar electricity from solar parks in rural areas are cost effective and can be deployed fast therefore play an important role in the energy transition. The optimal design of a solar park is largely affected by income scheme, electricity transport capacity, and land lease costs. Important design parameters for utility-scale solar parks that may affect landscape, biodiversity, and soil quality are ground coverage ratio, size, and tilt of the PV tables. Particularly, low tilt PV at high coverage reduces the amount of sunlight on the ground strongly and leads to deterioration of the soil quality over the typical 25-year lifetime. In contrast, vertical PV or an agri-PV designed fairly high above the ground leads to more and homogeneous ground irradiance; these designs are favored for pastures and croplands. In general, the amount and distribution of ground irradiance and precipitation will strongly affect which crops can grow below and between the PV tables and whether this supports the associated food chain. As agrivoltaics is the direct competition between photosynthesis and photovoltaics. Understanding when, where and how much light reaches the ground is key to relate the agri-PV solar park design to the expected agricultural and electricity yields. We have shown that by increasing the minimum height of the system, decreasing the size of the PV tables and decreasing the coverage ratio, the ground irradiance increases, in particular around the gaps between the tables. The most direct way of increasing the lowest irradiance in a solar park design is to use semi-transparent PV panels, such as the commercially available bifacial glass-glass modules. In conclusion: we have shown that we can achieve similar ground irradiance levels in an east- and west-facing design with 77% ground coverage ratio as is achieved by a south-facing design at 53% coverage.
By Rob Davis, Connexus Energy
Seven years after designing our first solar array, more than 20 million deep-rooted and pollinator-friendly plants across more than 150 acres are helping us control costs while maximizing local benefits for our community, resulting in national recognition and hometown goodwill — but it almost didn’t happen. Now, our standard practice is to require pollinator-friendly ground cover across all of the large-scale solar arrays that feed into our grid.
Connexus Energy is Minnesota’s largest electric cooperative and one of the 15 largest retail electric cooperatives nationwide, serving more than 320,000 people (141,000 meters) in parts of eight Minnesota counties. By embracing innovations including grid-scale battery storage, more than $25 million of local solar generation, customer-centric demand response programs, and automated metering infrastructure, Connexus has kept retail rates to our members flat for five consecutive years, while progressing with greening the grid.
Our first solar array—built in 2014 immediately adjacent to our headquarters—was initially designed with gravel, but a change set us on a different course. Working with one of our co-op members, Prairie Restorations of Princeton, Minnesota, a low-growing meadow seed mix was designed and implemented. Making productive use of the land under and around a ground-mounted solar array fits with one of the seven cooperative principles — Concern for Community. After a year or two of growing in, the site’s beneficial plants were crowding out weed species, reducing mowing costs, and making a positive impression with the community.
Having now partnered in the development of four additional grid-scale solar projects—two of which include 15 MW of battery storage—Connexus’ decision to proactively ask for productive use of the land under and around the panels is continuing to pay dividends:
- Last fall one of Minnesota’s award-winning filmmakers teamed up with Prairie Restorations on a short documentary, Pollinators, Prairie, and Power, which included Connexus Energy CEO Greg Ridderbusch. Click HERE to watch it.
- The Associated Press recognized Connexus Energy’s leadership in solar land-use practices in a major news story that generated more than 150 million media impressions nationwide. Connexus was the only electric utility included in the expansive story that also included interviews with scientists from the National Renewable Energy Laboratory. The story, “Bees, Sheep, Crops: Solar Developers Tout Multiple Benefits,” appeared in more than 240 media outlets in 41 states and territories.
Earlier this year, the U.S. Department of Energy Secretary Granholm highlighted Connexus Energy, sharing an extraordinary Minnesota Public Radio story about co-op innovation and use of local solar to keep rates flat.
- Research on one of Connexus’ solar projects by NREL, the University of Minnesota, and nonprofit partners is quantifying substantial stormwater benefits of deep-rooted ground cover. The PV-SMaRT project is monitoring and collecting water-quality data from five U.S. solar sites with different land and climate conditions. “The end goal is to develop research-driven tools and best practices that can be used by permitting authorities and PV developers to make more informed decisions on stormwater management measures that are tailored to the true impacts of a PV array on the environment,” says Jennifer Daw, principal investigator for the PV-SMaRT project and Group Manager for Strategy, Policy & Implementation at NREL.
Massachusetts Farmer Identifies Agrivoltaic Benefits
Northfield, Massachusetts, farmer Jesse Robertson-Dubois is identifying benefits of integrating agrivoltaics into farm operations, according to a news release by the Daily Hampshire Gazette. Dubois elaborates on the misconceptions that solar integration into farmland destroys the land and that developer’s “prey” on landowners. Dubois says that not only does this sound silly to farmers, but agrivoltaic system designs could be “incubators of agricultural innovation and economic development,” according to the news release. Read more about the discussion here.
Delhi-Based Solar Developer Secures $1 Million in Funding
Oorja, a Delhi-based solar provider, has secured $1 million in seed funding for agrisolar project development in India, according to a news report by Mercom. The funding comes from Schneider Energy Access Asia and is expected to develop 121 solar projects in 2022 and save around 200 metric tons of carbon dioxide emissions by December 2022, according to the report. Read more about the funding here.
Solar System Successfully Grows Crops Using Hydrocell
According to a report by ScienceDaily, a new system and low-cost strategy has successfully grown crops in Saudi Arabia by drawing water vapor from the air while producing electricity. This method is a sustainable strategy for improving water and food security for those living in dry-climate regions like Saudi Arabia, according to the report. To learn how the system works, which involves solar panels placed on top of the hydrocell to collect water vapor, click here.
Pilot Project in Netherlands Focuses on Agrisolar Operations
Swedish multinational power company Vattenfall announced that a four-year pilot project has been approved in the Netherlands, according to a recent news release. The project will study the combination of organic crop cultivation and solar panels in Almere, focusing on “smart solar and farming practices.” Data from the smart solar operations will be studied to improve the results of similar operations in the future, according to a news release by Renew Economy.
The U.S. Department of Energy has announced a $10 million funding opportunity for “innovative solutions and strategies that maximize benefits and minimize impacts to wildlife and ecosystems from solar energy infrastructure, ” according to a news release by the Solar Energy Technologies Office.
The Deploying Solar with Wildlife and Ecosystem Benefits (SolWEB) will fund projects that will facilitate ground-mounted solar-energy production compatible with wildlife, as well as projects that assess and optimize ecosystem benefits provided by solar energy, said the news release.
DOE anticipates two to three awards at $1.2 million for Wildlife-Solar Energy Interactions projects, and two to four awards at $500,000-$2 million for Ecosystem Services from Solar Facilities projects.
The funding will assist in achieving goals established by the Biden Administration, which include decarbonizing the electricity sector by 2035.
Find more information on this funding opportunity and details about how to submit a request here.
Trials Reveal benefits of Utilizing Agrivoltaic Systems
Research trials conducted by a collaboration between the University of Sheffield, World Agroforestry and the Latia Agripreneurship Institute have shown that agrivoltaic practices result in larger crops and reduced water loss, according to a recent report by The Guardian. The report explains that solar panels located above the crops can aid people with limited land resources by doubling the land’s output through cultivating food and generating power at the same time.
The “Mother of All” Agrivoltaic Projects Moves Forward in California
A report by Clean Technica has announced that the “Mother of All” agrivoltaic projects, Project Nexus, is scheduled to begin in California. The project includes constructing solar canopies over irrigation canals, which will highlight benefits of the symbiotic relationship between energy and water management. According to the report, the project could save 63 billion gallons of water per year, enough water to meet the irrigation demands of 50,000 acres of agricultural land.
Winners of Iberdrola Energy Contest Announced
Iberdrola, an energy company located in Spain, has announced the winners of its international Perseo startup program contest. The winners are the France-based companies Itk and Ombrea, Italian software company Techedge, and EcoEnergias del Guadiana, according to PV Magazine’s recent news release. The contest aimed to identify innovative approaches to combining agriculture, horticulture, livestock, fish-farming, and beekeeping with solar PV operations, according to the news release.
Connecticut’s Greenskies Solar Facilities Approved to Expand Agrivoltaics Operations
Two of Connecticut’s Greenskies Clean Energy solar facilities have been approved by the Connecticut Siting Council to move forward with expanding their agrivoltaic practices, according to a news report by PV Magazine. The solar farms are in East Windsor, CT and Orange, CT. The East Windsor farm will begin grazing sheep under solar panels, and the farm in Orange will grow organic vegetables between row of the solar modules.
French President Identifies Solar as Solution to Reach Energy Goals
French president Emmanuel Macron recently identified solar and agrivoltaics as a solution to reach France’s energy goals by 2050, according to PV Magazine. France aims to produce 100GW by 2050 and identifies agrivoltaics as one of the “three pillars” of solar development in the country. The goal of producing 100GW by 2050 means roughly 5 GW of annual installations need to be completed.
This report shows industrial processes for comprehensive solar integration. The paper discusses solar thermal energy-integration methods, cost estimations of system components and solar fractions. Multiple case study examples relevant to the dairy and biothermal industry are presented. Each case study includes three scenarios, and the results of each of those are discussed here.
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