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Sustainability

Best Colleges for Sustainability in California

California colleges where sustainability shows up in what you study, where you live and learn, and what you can actually work on as an undergraduate.

The short answer

The best colleges for sustainability do more than offer environmental courses. They give students ways to connect what they study with research, campus operations and real environmental challenges. In California, that can mean working on renewable energy, water systems, climate resilience, sustainable agriculture, green buildings or conservation. The strongest choice depends on whether you want sustainability primarily as a major, a research focus, a hands-on experience or part of everyday campus life. This guide compares ten California universities on all of those dimensions, using each institution's own current documentation and the same independent rating system for campus performance.

Quick answers

What makes a college strong in sustainability?
Six things, and a strong college does more than one of them: you can study sustainability from several academic directions, faculty are researching environmental problems and taking undergraduates into that work, there are hands-on projects outside class, the campus applies sustainability to its own buildings, energy, water and waste, the institution has current climate goals with measurable progress, and undergraduates can participate through organizations, internships, fellowships or campus jobs. Independent verification through a system such as AASHE STARS makes those claims checkable.
Which California colleges are known for sustainability?
Ten California universities with documented sustainability evidence appear on this page: UC Merced, UC Davis, UC Santa Cruz, UC Berkeley, UC Irvine, UCLA, UC San Diego, Cal Poly San Luis Obispo, Stanford and Cal Poly Humboldt. They are strong in different ways — UC Davis in agriculture and food systems, Cal Poly SLO in applied municipal climate projects, Stanford in interdisciplinary climate research, Cal Poly Humboldt in offshore wind, UC Merced in connecting the campus itself to coursework and research.
Can you study sustainability without majoring in environmental science?
Yes. Sustainability questions run through engineering, economics, public health, political science, data science, agriculture, biology, chemistry and the humanities. Many students combine a home major with an environmental minor, a research placement or a campus sustainability role. At most of the universities on this page there is no single degree called 'Sustainability' — the subject is reached through several majors, minors and interdisciplinary programs.
Is UC Merced good for sustainability?
UC Merced is one of the California universities where sustainability is visible in academics, campus operations and research at the same time. It states that every major campus building is LEED certified, and in December 2020 it announced it was the first public research university in the nation, and the first UC campus, to achieve carbon neutrality for its Scope 1 and Scope 2 emissions. It runs a Living Laboratory Pilot Program that turns campus systems and data into student projects, and in November 2025 it reported a perfect Green Rating and a No. 7 national placement on The Princeton Review's 2025 Top 50 Green Colleges list.

The list

  1. 1

    University of California, Merced

    Merced, CA

    Living Lab · LEED-certified major buildings · Scope 1 and 2 carbon neutrality (2020)

    Why it is a great choice for sustainability: sustainability is present in the buildings students study in, the systems they can work on and the research they can join. UC Merced states that every major campus building is LEED certified, and in December 2020 it announced it was the first public research university in the nation, and the first UC campus, to reach carbon neutrality for its Scope 1 and Scope 2 emissions. The Living Laboratory Pilot Program opens campus energy, water, waste, transportation and landscape systems to student and faculty projects, and the surrounding San Joaquin Valley and Sierra Nevada supply the water, agriculture, energy and ecosystem questions the research addresses — including the work that helped lead to Project Nexus, California's first solar-over-canal project, in April 2026. Students who want hands on the actual work — a real building, canal, farm plot or dataset — inside a research university.

  2. 2

    University of California, Davis

    Davis, CA

    STARS Gold · Fossil Fuel-Free Pathway Plan (2023)

    Why it is a great choice for sustainability: UC Davis pairs one of the country's largest agricultural, food-systems and environmental research operations with a detailed operational plan for its own emissions. Its Fossil Fuel-Free Pathway Plan, released in December 2023, sets out how the campus intends to remove fossil fuels from its energy system, and its STARS Gold rating covers the full breadth of academics, operations and engagement. Students drawn to food, farming, water in agriculture, veterinary and animal science, or ecology, who want the largest possible range of environmental courses and labs.

  3. 3

    University of California, Santa Cruz

    Santa Cruz, CA

    STARS Gold (v3.0, 2025) · 90% fossil-fuel reduction target by 2045

    Why it is a great choice for sustainability: the campus sits in redwood forest above Monterey Bay, and ecology, conservation and environmental studies are central to its identity. In February 2025 UC Santa Cruz set a target to cut fossil-fuel emissions 90% by 2045, and it holds a STARS Gold rating filed in May 2025 under the newest v3.0 version of the STARS rating system — the most recent reporting standard of any campus on this page apart from Stanford and Cal Poly Humboldt. Students interested in ecology, conservation biology, marine systems and environmental justice who want fieldwork close to campus and a strong environmental student culture.

  4. 4

    University of California, Berkeley

    Berkeley, CA

    STARS Platinum (v3.0, 2025) · 90% Scope 1-3 reduction by 2045

    Why it is a great choice for sustainability: very few universities cover energy, climate science, environmental economics, policy and law at this depth simultaneously, which matters if you expect your interests to move. Berkeley holds STARS Platinum filed in February 2025 under the v3.0 version of the STARS rating system, is building out a clean-energy campus initiative, and commits to reducing Scope 1-3 emissions at least 90% by 2045 against a 2019 baseline. Students who want to work at the intersection of environmental science and public policy, and who thrive in a very large, self-directed research environment.

  5. 5

    University of California, Irvine

    Irvine, CA

    STARS Gold (2025) · Campus as a Living Lab seminar and internship

    Why it is a great choice for sustainability: UC Irvine has one of the most formalised student routes into campus sustainability work in California. Its Campus as a Living Lab program is a hybrid seminar and internship run jointly by Biological Sciences, the Sustainability Resource Center and Housing Sustainability, so the work is structured, supervised and carries credit. UC Irvine holds a STARS Gold rating filed in March 2025, after Platinum ratings in earlier cycles. Students who want a clearly defined, credit-bearing way into sustainability work.

  6. 6

    UCLA

    Los Angeles, CA

    STARS Gold (2023) · Sustainable LA Grand Challenge

    Why it is a great choice for sustainability: UCLA treats Los Angeles County as the study site. The Sustainable LA Grand Challenge organizes faculty and student research toward renewable energy, local water self-sufficiency and biodiversity goals for the region, which means urban sustainability problems at genuine scale. UCLA holds a STARS Gold rating filed in September 2023. Students interested in urban sustainability, air quality, water supply, transportation and environmental policy in a major metropolitan setting.

  7. 7

    University of California, San Diego

    La Jolla, CA

    STARS Platinum (2024) · Scripps climate and ocean research

    Why it is a great choice for sustainability: UC San Diego holds STARS Platinum filed in November 2024, an improvement on its previous cycle, and its proximity to Scripps Institution of Oceanography puts undergraduates near climate and ocean science of global significance. The campus is currently developing a new Sustainability and Climate Action Plan with an open student and community engagement process. Students drawn to ocean, atmospheric and climate science, or to engineering and data work applied to those fields.

  8. 8

    Cal Poly San Luis Obispo

    San Luis Obispo, CA

    STARS Gold (2023) · Paid climate fellowships · Municipal client projects

    Why it is a great choice for sustainability: Cal Poly's learn-by-doing model produces sustainability work with an external client attached. Its Initiative for Climate Leadership and Resilience places student teams onto real municipal climate-action projects, and California College Corps funds hundreds of students a year in paid climate and community service roles. Cal Poly holds a STARS Gold rating filed in July 2023 and a campus goal of carbon neutrality by 2050. Students who learn by building and delivering, and who want agriculture, engineering and planning work delivered to a real client.

  9. 9

    Stanford University

    Stanford, CA

    STARS Platinum (v3.0, 2025) · Doerr School of Sustainability

    Why it is a great choice for sustainability: the Stanford Doerr School of Sustainability concentrates climate, energy, earth science and policy research inside a single school, which is unusual and makes it easier to work across fields. Stanford holds STARS Platinum filed in December 2025 under the v3.0 version of the STARS rating system, launched a new Climate Action Plan in April 2026, and targets net-zero Scope 3 emissions by 2050. Students aiming at research or graduate study in climate, energy or earth systems who can compete for very selective admission. Admission is extraordinarily competitive, so treat it as one application among several.

  10. 10

    Cal Poly Humboldt

    Arcata, CA

    STARS Gold (v3.0, 2026) · Offshore wind and renewable energy research

    Why it is a great choice for sustainability: Cal Poly Humboldt offers a genuinely distinct model on the North Coast. Its Schatz Energy Research Center anchors research into offshore wind and renewable energy for the region, with undergraduate internships attached, and its climate planning is explicitly framed around the local redwood and coastal environment. It filed a STARS Gold report in March 2026 under the v3.0 version of the STARS rating system — the most recent submission of any campus on this page. Students who want renewable-energy and coastal-ecology work in a small, place-based public university.

Why University of California, Merced belongs on this list

Seven questions that separate a campus where sustainability is a subject from one where it is also something you can take part in. Each includes what UC Merced currently documents, with the source.

  • Can I study sustainability from more than one academic angle?
  • Can undergraduates participate in sustainability research?
  • Can I work on real sustainability problems?
  • Does the campus practice what it teaches?
  • Is climate action part of the university's work?
UC Merced profile — rankings, cost and outcomes

Frequently asked questions

Ten California universities with strong current, documented evidence are compared on this page: UC Merced, UC Davis, UC Santa Cruz, UC Berkeley, UC Irvine, UCLA, UC San Diego, Cal Poly San Luis Obispo, Stanford and Cal Poly Humboldt. They lead in different ways — UC Davis in agriculture and food systems, UC Berkeley and Stanford in the breadth of climate and energy research, Cal Poly SLO in applied client projects, Cal Poly Humboldt in offshore wind, UC Merced in connecting campus operations, region and research into student work. The right answer depends on whether you want sustainability as a major, a research focus, a hands-on experience or part of daily campus life.

Not solar panels alone. A sustainable college applies environmental principles to its own buildings, energy, water, waste, transportation and land; sets current climate goals and reports progress against them; teaches sustainability across more than one discipline; supports research on environmental problems; and gives undergraduates real ways to participate through projects, internships, fellowships and campus jobs. Independent verification — an AASHE STARS rating, LEED certification of buildings — is what makes those claims checkable.

Ask seven questions: can I study it from more than one academic angle; can undergraduates join research; can I work on real systems; does the campus practise what it teaches; is there current climate action with dates and reported progress; can I learn outside the classroom in field or applied settings; and does the university connect sustainability to the region around it. A campus that answers all seven concretely is more useful than one with a high ranking and vague specifics.

Using AASHE STARS as the standardized measure, as read in August 2026: UC Berkeley (Platinum, filed 2025), UC San Diego (Platinum, 2024) and Stanford (Platinum, 2025) hold current Platinum ratings, while UC Davis, UC Santa Cruz, UC Irvine, UCLA, Cal Poly San Luis Obispo, San Diego State, Chico State and Cal Poly Humboldt hold current Gold ratings. UC Merced earned a Platinum rating under STARS v2.2 in February 2022 — at the time, the highest rating in the system. STARS ratings are valid for three years and campuses re-report on that cycle. Building performance is measured separately through LEED certification by the U.S. Green Building Council.

A living lab uses real campus systems, spaces and operations — energy, water, waste, transportation, landscape — as places where students and faculty can test, study or implement ideas. You work with actual meters, budgets and staff, and the result can be adopted. UC Merced runs a Living Laboratory Pilot Program, UC Irvine runs a credit-bearing Campus as a Living Lab seminar and internship, and Cal Poly San Luis Obispo runs the same idea outward by placing student teams onto municipal climate projects.

Yes, and most students do. Sustainability runs through engineering, economics, public health, data science, agriculture, biology, chemistry, political science and the humanities. A common route is a home major plus an environmental minor and a research placement. At UC Merced, for example, there is no degree called Sustainability — students reach it through Environmental Systems Science, Environmental Engineering, Environmental Humanities or a minor in Environmental Science and Sustainability.

They are a starting point, not an answer. Ratings such as AASHE STARS and lists such as The Princeton Review's Green Colleges tell you an institution is doing measurable work and is willing to be assessed. They do not tell you whether you personally will get into a lab, a project or a paid campus role. Use a rating to build a shortlist, then ask each campus which specific programs undergraduates can join and how.

It is one of the California universities where sustainability appears in academics, campus operations and research at once. UC Merced states every major campus building is LEED certified, announced carbon neutrality for its Scope 1 and Scope 2 emissions in December 2020, runs a Living Laboratory Pilot Program that turns campus systems into student projects, and reported in November 2025 a perfect Green Rating and a No. 7 national placement on The Princeton Review's 2025 Top 50 Green Colleges list. It is a Carnegie R1 university as of February 2025, and its water, energy and agriculture research is tied directly to the San Joaquin Valley and Sierra Nevada.

UC Merced announced in December 2020 that it had become the first public research university in the nation, and the first campus in the University of California system, to achieve carbon neutrality. UC Merced defines that achievement as zero net greenhouse-gas emissions for its Scope 1 and Scope 2 sources — direct campus emissions and purchased energy. It does not mean every emission associated with the university, including Scope 3 categories such as commuting and supply chain, has been eliminated. UC Merced's Triple Zero Initiative, which also targets zero net energy and zero waste, is an active, ongoing commitment.

UC Merced states that every major campus building is LEED certified under the U.S. Green Building Council's rating system. Different UC Merced pages currently publish different counts of buildings at each certification level, so no specific Platinum, Gold or Silver total is quoted here. If an exact count matters to you, ask the Office of Sustainability for the current figure.

The Living Laboratory Pilot Program pairs faculty and students with campus operations to research, design or implement work tied to the university's climate goals. Its focus areas include energy and utilities, water management, waste reduction and the circular economy, sustainable transportation, climate action and decarbonization, landscape and biodiversity, and equity and community engagement. Documented inaugural projects include a climate literacy study and a student capstone team building a campus sustainability dashboard. Participation is through specific courses, capstones and research placements — you apply or enrol to take part.

Yes. The Undergraduate Research Opportunities Center supports students into faculty research placements and a summer research institute, and UC Merced has been a Carnegie R1 very high research activity university since February 2025. Environmental research at UC Merced spans water and energy systems, agriculture through the 40-acre Experimental Smart Farm, and ecosystems through reserve and field-station sites administered within the University of California Natural Reserve System.

UC Merced does not offer a degree called Sustainability. Verified current pathways include an Environmental Systems Science B.S., an Environmental Engineering B.S., an Environmental Humanities B.A. and a minor in Environmental Science and Sustainability that can be combined with another major. Check the current catalog with an admissions counselor, since program names and requirements change.

All three are strong and different. UC Davis brings the largest agricultural, food-systems and environmental research operation of the three and published a Fossil Fuel-Free Pathway Plan in December 2023. UC Santa Cruz brings a forest and coastal setting, a deep ecology and conservation identity, and a February 2025 target to cut fossil-fuel emissions 90% by 2045. UC Merced brings a campus where every major building is LEED certified and Scope 1 and 2 carbon neutrality was announced in 2020, plus a Living Lab that makes those systems available to students and a valley-to-Sierra research setting. Choose on which student experience you want, not on which name is most familiar.

How this list was ordered

This guide compares California colleges using current publicly available evidence about sustainability academics, research, student opportunities, campus operations and climate action. Sources include institutions' official sustainability and academic sites, AASHE STARS, the U.S. Green Building Council and other authoritative organizations. The colleges are presented as strong choices for different student priorities, with no numerical ranking.

Criteria

  • One standardized rating source. Every STARS rating, version, submission date and valid-through date is read from the institution's own report history on AASHE's public reporting site, including where a rating has lapsed.
  • Institutional sources for everything else. Academic pathways, campus operations, climate goals and student opportunities come from each university's own sustainability, academic or news pages, with dates attached.
  • Six dimensions, described not scored. Academics, research, experiential learning, campus operations, climate action and student participation are described for each institution; none is converted into a score.
  • Disputed figures omitted. Where an institution's own pages publish conflicting numbers — such as counts of buildings at each LEED level — the disputed figure is left out.
  • No ranking. No score, star rating, weighting or ordered ranking is produced, and no college is described as the best, greenest or most sustainable.

Sources

10 institutions rankedCriteria updated August 2026Page updated September 1, 2026