Solar Energy

Solar Renewable Energy

Cornell is striving to powering the campus with 100% renewable energy by 2035 as part of our commitment to carbon neutrality. We develop renewable energy resources that benefit our campus, community, and New York State, with an emphasis on large-scale solar farms and community solar projects. 


A sheep chews grass in front of a solar panel
Meet Our Solar Mowers. Sheep providing the mowing at all Cornell solar farms - eliminating fossil fuels and benefitting pollinators and local farmers. Our model has expanded across NY State.

About our Solar Energy Projects

Cornell has completed 15 solar energy projects to date. The University has six solar farms, seven on-campus arrays across eleven buildings, and three solar heating projects - as well as a mobile solar trailer used by the Grounds Department for fossil-fuel free, electric landscaping equipment. 

Over 20% of campus electricity needs are met by our solar projects, though renewable production regularly meets 100% of campus demand on sunny, high-producing days year-round. 

Additional solar projects and other renewable energy investments such as our campus hydropower plant could help the campus meet 100% of our year-round demand by the end of the early 2020s.

Cornell works with the Regional Greenhouse Gas Initiative (RGGI) - a carbon cap and trade program for utility-scale power generators in 11 states in the Northeast and mid-Atlantic, to displace fossil fuel generation equivalent to our solar farm generation. Since nearly all the big fossil fuel plants in NY state are located in or adjacent to disadvantaged communities, this program is an environmental justice-aligned solution.

Recent News


Solar Projects at Cornell

Cornell has chosen to demonstrate leadership in solar energy development in New York State.  We were the first Ivy and one of the first fifty campuses in the nation to undertake the ambitious goal to reach carbon neutrality for campus operations by 2035.  We are committed to working with our community, county, and New York State on shared climate and renewable energy goals.

+20% annual

campus electricity needs are
met by our solar farms

15 solar projects 

produce clean,
renewable energy

9 buildings

on campus have solar
power or heat systems

 Co-Benficial Development: Solar development on our campus and in our state helps create a shared fossil-fuel-free grid, and by creating new, renewable energy resources we are helping New York State and Tompkins County reach our common goals for a climate-resilient and green energy future.  Our solar farms are all in New York State, and have helped keep jobs and resources local.  Finally, these resources act as powerful living laboratory spaces for testing new sustainability solutions - like creating a solar grazing program for New York State farmers - and offer teaching space for students and local K12 schools.

 On-Campus Solar Projects

 9 projects for energy and heat

Jump to see details by project

 Solar Arrays & Projects
  • (2007) Cornell Campus Store Solar Array

  • (2012) Human Ecology Solar Array

  • (2014) Fernow Hall Solar Skylight

  • (2014) Snee Hall Solar Array

  • (2015) Klarman Hall Solar Array 

  • (2021) North Campus Housing (Phase 1)

 Solar Heating
  • (2011) Central Energy Plant Solar Heating

  • (2012) Cornell Botanic Gardens Nevin Welcome Center Solar Heating

  • (2021) Guterman Lab Solar Collector

Solar Farms 

6 projects producing 28MW

Jump to see details by project

  • (2014) Snyder Road Solar Farm, Lansing NY

  • (2015) Sutton Road Solar Farm, New York State Agricultural Experiment Station, Geneva NY

  • (2016) Cornell Ruminant Center Solar Farm, Cornell University Ruminant Center, Harford NY 

  • (2016) Musgrave East and Musgrave West Solar Farms, Cornell Agricultural Experiment Station, Ledyard NY

  • (2019) Cascadilla Community Solar Farm, Dryden NY

Other Projects 



Research Resources for Students and Faculty

EMCS Dashboard

Real Time Solar Data

Explore solar production by on-campus and off-campus arrays, including data views for daily, monthly, or year-to-year comparison.
 

Study of campus rooftop solar

Rooftop Solar Study

Should we develop solar arrays on-campus?  Read Cornell's in-depth analysis performed as a living laboratory project by students & staff.

Group standing near Cornell solar array

Tours & Site Access

Interested in visiting with a class, performing research, or bringing a community group to a solar farm?

Find Solar on the Map

Where are our solar farms and on-campus projects? Find them on the Sustainability Map
 

Sheep at solar farm. One sheep whispering to another.

Solar Sheep Mowing

Research on using sheep for grounds maintenance of solar farms
 

 
Are you a student or faculty interested in research using Cornell's solar projects?
Contact the Campus Sustainability Office for support.

sustainability@cornell.edu 

Expand each section to learn more specific projects and the history of our solar farm development on Cornell-owned land in New York State. Our solar farms produce 28MWac, or 40MWdc. 


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A group of student poses in front of Snyder Farm's solar panels
Snyder Road solar farm hosts many educational tours each year

Snyder Road Solar Farm (2014)
Lansing NY

Cornell’s first solar farm, Snyder Road Solar Farm was the first megawatt-scale renewable energy generation project undertaken by the campus since the hydropower plant came online in 1904.  Snyder Road was the first of Cornell’s solar farms to pilot using sheep to mow the grass and was developed on land with limited development potential. The facility has a 30 year PPA and generates renewable energy credits (RECs).

Research at this Site

A special 10 panel educational section was constructed for students and faculty to physically experiment with solar energy. The living lab solar area is separately metered, separately fenced and has a tilt rack system to allows researchers to show changes in solar output by tweaking the positioning of a small portion of the solar panels.

Other Research: Hydrology impacts; small mammals and predation

Special Project Features

The solar facility is sited on lands with limited development potential.  Historic operations on nearby land left soil and groundwater compromised and unfit for redevelopment.  By building solar at the property, Cornell restored undesirable property – located at the end of an airport runway - to productive use.

The solar farm layout was designed to avoid, and protect, wetlands on the property.  The final design integrates the wetlands in the center of the arrays, allowing for both ecological habitat and renewable energy production. 


Project Details
  • Date Online: 2014

  • Size: 2MW / 2.5 million KWH annual production on 11 acres of land

  • Cornell Impact: Provides about 1% of Cornell’s annual electricity needs. 450 MTCO2e / year carbon reduction, about .2% of campus carbon footprint


News & Resources

Drone image of Sutton Road Solar Farm panels
The Sutton Road Solar Farm produces 40% of the annual electricity demand for the New York State Agricultural Experiment Station

Sutton Road Solar Farm (2016)
New York State Agricultural Experiment Station, Geneva NY

Cornell’s second solar farm, Sutton Road Solar Farm in Geneva, NY provides 40% of the annual electricity demand for the New York State Agricultural Experiment Station located there.  Solar sheep are used to mow the grass. The facility has a 30 year PPA and generates renewable energy credits (RECs)  - the estimated RECs value in the first year of production was approximately $3,400. 

Research at this Site

Using the sheep at the solar farm-inspired grape researcher on the adjacent plot to try using dwarf sheep to maintain vegetation around the vines instead of herbicides.


Project Details
  • Date Online: 2016

  • Size: 2MW / 3.2 million KWH annual production on 13 acres of land 

  • Cornell Impact: Provides about 40% of the Experiment station's electricity needs annually


News & Resources
Drone image of the Cornell Ruminant Center Solar Farm panels
At the request of the Town of Harford, the project team was careful to preserve access to a snowmobile trail running adjacent to the solar farm

Cornell Ruminant Center Solar Farm (2016) 

Cornell University Ruminant Center, Harford NY 

 

Completed in 2016, the Cornell Ruminant Center Solar Farm located in Harford NY uses solar sheep to mow the grass and was designed for more energy to be captured in the “shoulder production” periods, early morning and late evening, than in previous solar farm projects. By allowing for capture in a greater range of solar production, Cornell is able to stay within the regulatory limits and gain further solar energy returns for the array. The project was designed to allow a popular snowmobile trail to continue running adjacent to the solar farm. The facility has a 30 year PPA and generates renewable energy credits (RECs). 


Project Details
  • Date Online: 2016

  • Size: 2MW / 3.3 million KWH annual production on 13 acres of land 

  • Cornell Impact: Provides about 1.5% of Cornell's annual electricity needs


News & Resources
Drone image of the Musgrave East & West Solar Farms
Drone image of the Musgrave East & West Solar Farms

Musgrave East & Musgrave West Solar Farms (2016) 

Cornell Agricultural Experiment Station, Ledyard NY 

Musgrave East and Musgrave West Solar Farms (located at the Cornell Agricultural Experiment Station but developed as two separate projects to maximize energy production potential).  The projects have a 30 year PPAs  and generate renewable energy credits (RECs). 

Research at this Site 

An ongoing study on the “agricultural, economic and environmental potential of co-locating utility scale solar with grazing sheep” was undertaken by Nikola Kochendoerfer – Cornell University, Animal Science Department Lexie Hain – Agrivoltaic Solutions LLC & American Solar Grazing Association Michael L. Thonney – Cornell University, Animal Science Department. The aim of this study was to compare economic and agricultural benefits and challenges of traditional land management strategies (mowing, string trimming) with rotationally grazed sheep on solar sites. 


Project Details
  • Date Online: 2016

  • Size: 4MW / 6.6 KWH annual production on 28 acres of land, combined  (two 2MW solar farms producing 3.3 KWH annual each)

  • Cornell Impact: Provides about 3% of Cornell's annual electricity needs


News & Resources
Drone image of the Cascadilla Community Farm solar panels
Cascadilla Community Solar Farm is the largest community solar farm operating in upstate New York, as of the early 2020s. 

Cascadilla Community Solar Farm (2019) 

Dryden NY 

The Cascadilla Community Solar Farm located on Cornell-owned lands in Dryden, NY allowed the University to lease non-producing farmland to a solar developer who provides solar power to local families in surrounding communities.  Cornell claims the RECs or ‘renewable energy credits’ from the project as part of the climate action plan goal to reach carbon neutrality by 2035.  The project serves over 3,000 families in upstate New York.  The project was more than quadruple the size of any previous solar project undertaken by the University. Eight arrays are grouped on three subsites. 

Special Project Features

Cascadilla Community Solar Farm is the largest community solar farm operating in upstate New York, as of the early 2020s. Community solar farms are a smart and socially just method of renewable energy development, as a way to make renewable energy accessible to everyone.  Customers benefit by avoiding high upfront costs and maintenance, and purchasing cheaper electricity.


Project Details
  • Date Online: 2019

  • Size: 18MW / 25 million KWH annual production on 125 acres of land

  • Cornell Impact: Provides about 13% of Cornell's annual electricity needs


News & Resources

NY Large Scale Renewable Energy  (LSRE)
Cornell is pursuing two LSRE projects in New York state that will help the campus achieve it's 100% renewable electricity goal years ahead of schedule!
110MW Solar PV Project

This new solar photovoltaic project is expected to generate about 150,000 megawatt hours (MWh) every year. The planned 110-megawatt (MW) project in Batavia, NY – some 94 miles northwest of the Ithaca campus - seeks to be operational in 2027 using bifacial panels which capture energy when the sunlight hits both the front and the back, and solar tracking technology to maximize generation. Cornell and project developer Distributed Sun will collaborate to leverage new research on best practices for sustainable design and operation, and the completed array will continue to serve as a living laboratory supporting Cornell’s research, academic and public engagement mission.

NY Higher Education LSRE Project (NYHE)

As of early 2018, 20 State University of New York (SUNY) and private NYS higher education institutions have joined together to form a consortium for developing and purchasing new, large scale renewable energy projects.

The NY Higher Education LSRE Project seeks to lower financial barriers to renewable energy procurement through combined purchases.  If successful, the project will become the largest renewable energy consortium to develop in New York State, and the United States, and the largest consortium of higher education institutions to create new renewable energy resources in the world. The consortium intent is to bring projects online in the 2020s.

News & Resources

Solar energy can be harnessed for power or heating campus buildings and has been used as part of many campus buildings' LEED certification design process.  


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Cornell Campus Store Loading Dock (2007)

The Cornell Store system was installed concurrent with the Day Hall array in late 2006, early 2007.  The array produces about 1,500 to 1,800 kilowatt hours, worth about $150 to $180 a year when the system was installed.

  • Panels: 8

  • Production Power: 2.2 kW

  • % of building’s electricity: 0.2%

Campus Store rooftop solar panels

College of Human Ecology (2015) 

The Human Ecology Building’s rooftop solar project was developed in 2015 by Distributed Sun in partnership with the Colleges of Arts and Sciences, the College of Human Ecology, Cornell Energy and Sustainability, and Building Energy. The Human Ecology Building was the first building on campus that achieved LEED® Platinum. This is the largest rooftop array on campus, as of 2020.

  • Panels: 228

  • Production Power: 76 kW

  • % of building’s electricity: 6%

Human ecology building rooftop solar panels

Fernow Hall (2014)

Fernow Hall's rooftop solar project features PV skylights and traditional PV panels. Typically, skylights require some shading to block sunlight during the most intense periods of the day, but solar integrated glass provides a dual benefit by blocking glare, reducing cooling loads, and producing renewable energy.

  • Panels: 2 panels and 5 pyramid-shaped skylights with PV cells

  • Production Power: 2.2 kW

  • % of building’s electricity: 1%

Fernow Hall's solar PV glass skylights

Snee Hall (2014)

Snee Hall's rooftop solar array was developed in 2014 by Cornell University Sustainable Design (CUSD) student group. 

  • Panels: 18

  • Production Power: 3.5 kW

  • % of building’s electricity: %

A solar panel from snee hall with students

Klarman Hall (2015)

Klarman Hall’s rooftop solar project was developed in 2015 by Distributed Sun in partnership with Cornell Energy Sustainability and the Colleges of Arts and Sciences. Klarman Hall is a LEED Certified Platinum green building due to its array of sustainable features, including a rainwater reclamation system, living green roof areas, and light wells.

  • Panels: 64

  • Production Power: 20 kW

  • % of building’s electricity: 50%

Klarman Hall rooftop solar panels

A rooftop solar thermal system provides hot water for building heating and for shower/service water use, significantly reducing the amount of natural gas consumption.

Cornell has two solar heating systems in operation. The Central Energy Plant office and the Brain C. Nevin Welcome Welcome Center systems both use evacuated tube solar collectors, featuring glass tubes with black surface coating to absorb solar energy.  

Central Energy Plant Solar Heating System (2011)

 The 120,000 Btu/hr peak output on the roof provides the majority of the offices yearly domestic hot water heating needs as well as approximately 15% of the yearly building comfort heating needs. 
This solar heating system was put into place as part of the building’s LEED Gold Certification and paired with energy efficiency upgrades.

Cornell Botanic Gardens Nevin Welcome Center Solar Heating System (2012)

A similar solar thermal system as the CEP, the Nevin Welcome Center’s LEED Gold Certified building has 65,000 Btu/hr peak output or approximately 10% of the yearly building comfort heating needs.

Guterman Lab Solar Collector (2021) 

An innovative solar collector system installed atop Guterman Research Center uses mirror technology to capture sunlight and turn it into thermal energy that will help heat the facility’s water distribution network. The intelligent mirror array was the first of its kind at Cornell and the seventh on-campus solar system. The system is expected to annually reduce the facility’s campus steam consumption by 122 million Btus and offset approximately 4% of the facility’s summer heat load. 


 
The solar arrays on Ganędagǫ: Hall and Toni Morrison Hall absorb a lot of energy on sunny days.
The solar arrays on Ganędagǫ: Hall and Toni Morrison Hall absorb a lot of energy on sunny days. Photo by Ryan Young/Cornell University
North Campus Residential Complex (2022)

From the rooftops of Cornell’s North Campus Residential Expansion (NCRE), the university will gather enough solar energy to offset about 1 megawatt of electricity annually (35% of the  new building complex's electricity) and further reduce the university’s carbon footprint.

  • Production Power: 1.1 MW

  • % of NCRE electricity: 35%

News & Resources

Day Hall (2006-2022)

Day Hall’s rooftop solar project was developed in 2006 thanks to generous donations from the Krich Family Solar Fund and Cornell trustee emeritus Dick Aubrecht '66, Ph.D. '70. At the time, it was the third-largest solar array in Tompkins County. The solar panels were the first rooftop solar project on the Cornell campus, and generate enough electricity to light the clocktower! The Day Hall solar array was decommissioned in 202 when the panel inverters reached the end of their useful life. 

  • Panels: 54

  • Production Power: 15 kW

    The Day Hall panels produced over 630,000 kWh throughout their time in service. Over its 14-year lifetime, the system produced energy equivalent to 1,034 barrels of oil.
     

Day hall rooftop solar panels


Solar Sheep Mowing

Cornell University has used its solar farms as living laboratory spaces to test, perfect, and create pilot materials for New York State farmers on co-beneficial use of sheep to maintain the grass and other materials in solar farms or large-scale arrays.  Solar grazing is the use of livestock to maintain vegetation under solar panels. It is just one practice under the larger umbrella of “agrivoltaics”: combining agricultural and renewable energy production on the same piece of land. Utilizing sheep for site vegetation has resulted in “2.5 times fewer labor hours than mechanical and pesticide management on site.”

Thank You to Our Partners

Distributed Sun LLC Logo
 

Development of our solar resources would not be possible without the support and partnership of our solar developers.

Cornell University's solar farms are developed on Cornell-owned land in partnership with Distributed Sun and Building Asset Management, LLC via power purchase agreements.