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Energy Innovation Park aerial view

Clean Energy

UC Commitment

  • Reduce each location's energy use intensity by an average of at least 2% annually
  • By 2025, each campus and health location will:
    • Obtain 100% clean electricity
    • Have at least 40% of natural gas combusted on-site will be biogas

Campus Actions

UC San Diego is committed to conserving energy in cooperation with statewide load-reduction initiatives and UC standards. The campus generates about 79% of its own electricity using an ultra-clean and efficient cogeneration plant, the world’s largest commercial fuel cell and solar panels.

UC San Diego’s Energy Innovation Park houses several innovative energy systems, including:

  • 2.8-megawatt fuel cell
  • 2.5 megawatt/5 megawatt-hour advanced energy storage system
  • Compressed Natural Gas fueling station that delivers renewable CNG to campus fleet and public vehicles
  • Chiller plant that provides cold water to the nearby 2.2 million gallon Thermal Energy Storage system

Clean Energy Production


The campus operates a 30-megawatt natural-gas-fired combined heat and power system that provides 72% of the campus’s annual electricity needs. The Environmental Protection Agancy recognized the plant with an Energy Star CHP Award for its high efficiency and low emissions. 

Cogeneration uses one fuel source (natural gas) to produce two forms of energy (electricity and heat). State-of–the-art gas turbines equipped with pollution controls are 45-50% more efficient than conventional natural gas power plants and produce 75% fewer emissions.

In addition to saving approximately $18 million in annual purchased utilities costs, cogeneration reduces:

  • Energy loss due to transmission and distribution of electricity over the statewide electrical grid
  • Reliance on out-of-state coal-burning power generation
  • Regional congestion on SDG&E’s grid system

Energy Management System

A computerized Energy Management System connects all major campus buildings and centrally monitors and controls mechanical systems — heating, ventilating and air conditioning —  based on occupancy. The programmed system reduces energy use during evenings, weekends and holidays. Precise programming reduces peak-time energy demand, maximizes conservation and allows for efficient room temperature management and long-term trending and comparative analysis.


UC San Diego has built one of the world’s the most advanced microgrids, which is key to creating a carbon neutral campus. The microgrid provides a flexible, resilient, reliable, secure energy distribution system that generates more than 85% of the electricity used on campus annually. Power is provided from several sources the campus’ 30-megawatt cogeneration plant, 2.8-megawatt renewable energy fuel cell, and 2.4 megawatts of solar arrays.


The campus’ 2.4-megawatt solar network includes an array of rooftop, carport and ground mounted systems, including several integrated with advanced energy systems. The campus continually seeks opportunities to expand our solar infrastructure.

Fuel Cell

Our 2.8-megawatt fuel cell is the largest on any college campus. It provides about 7% of UC San Diego’s total energy needs, or the equivalent of powering 2,800 homes. The fuel cell uses waste methane gas from the Point Loma Wastewater Treatment Plant to generate combustion-free electricity for the campus. In addition to electricity, a 300-ton absorption chiller captures waste heat from the fuel cell to produce chilled water that is stored in the nearby Thermal Energy Storage system.


A 300-kilowatt solar water-heating system installed at North Campus Housing is one of the largest solar-thermal projects at a North American university.

Energy Efficiency

Building Retrofits

Since 2008, UC San Diego has invested over $100 million in retrofitting the campus’ existing buildings to be more energy efficient. This work has resulted in the campus saving more than $12 million in annual energy costs. These projects include:

  • Upgrading to energy-efficient ventilation systems in high-energy-use buildings
  • Switching to LED lighting
  • Enhancing building-performance monitoring and tuning
  • Retrofitting heating and ventilation systems, controls and ductwork
  • Replacing laboratory freezers with more energy-efficient models

The campus plans to complete more than $50 million in energy retrofits over the next five years.

Green Building Standards

All new construction projects must meet Leadership in Energy & Environmental Design Silver certification or better. This ensures that new campus construction and major renovation projects maximize energy and water efficiency, help reduce carbon emissions and improve indoor environmental quality.

About Our Green Building Program

Charles David Keeling Apartments


To support its ongoing clean energy program, the campus has used a variety of financing mechanisms, including third-party financed Power-Purchase Agreements, Federal Clean Renewable Energy Bonds, and state and federal grants and incentives.

Power-Purchase Agreements

Under a power-purchase agreement, the university enters into a contract with a third party energy provider that agrees to own, operate and maintain a renewable energy system on campus. In return, the university pays the energy provider a negotiated rate for the renewable electricity generated. In 2008, UC San Diego signed a power-purchase agreement with Solar Power Partners to develop a 1.2-megawatt photovoltaic system on campus, which allowed the university to take advantage of solar power without cash up front. The campus’s 2.8-megawatt fuel-cell project utilized a similar agreement.

Clean Renewable Energy Bonds

Under the Internal Revenue Service’s Clean Renewable Energy Bond program, UC San Diego was able to access $15 million in low-cost loans to fund the installation of 2 megawatts of solar power at on- and off-campus sites.

Grants and Incentives

Over the past 10 years, UC San Diego has received more than $30 million in state incentives and rebates — like the California Solar Initiative, Self-Generation Incentive Program and the UC/CSU Energy Partnership Program — that have helped reduce the cost of providing clean energy alternatives.

UC San Diego’s ongoing clean energy and Microgrid-related research activities have helped to secure numerous federal and state energy-program grants. For example, the campus and its partner, Nuuve, recently received a $4.2 million grant from the California Energy Commission to demonstrate how “Vehicle to Grid” technology, where electric vehicles feed stored energy back into the grid, can work on a large scale. This grant was possible because UC San Diego’s Microgrid allows the flexibility to incorporate new and innovative clean energy solutions into a real-world operational environment.

Energy Storage

Energy storage is the key to balancing energy supply and demand and UC San Diego has one of the largest, most diversified energy storage portfolios of any college campus. The portfolio contains a variety of energy storage types, including advanced battery storage, thermal energy storage, an ultra-capacitor, and two “2nd Life EV Battery Storage” demonstration systems. Examples:

Most recently, in partnership with UC San Diego’s Center for Energy Research and ESS, a demonstration 40 kilowatt/400 kilowatt “all-iron flow battery” was installed on one of the three test sites located at the east campus Energy Research Park.