About Trellis-Strategy
Inspired by the way a trellis supports and guides a plant's healthy growth, our firm helps lift ideas off the ground and build lasting momentum.
Trellis-Strategy supports the planning and execution of impactful strategies that improve efficiency and support sustainable growth.
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For organizations, we create actionable business development and marketing strategies rooted in organization or project specific goals, design processes that help navigate (inevitable) change and complexity, and foster community engagement to support long-term success.
With deep expertise in the water–energy nexus and a focus on social equity, we help launch and execute initiatives, facilitate programs, and manage projects. We enjoy bringing your vision to life and maximizing impact through educational campaigns, community engagement workshops, or stakeholder sessions.
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With over a decade of experience working across the water-energy-food nexus, Trellis-Strategy brings practical, results-driven planning, facilitation, and organizational tools to every engagement.
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Trellis-Strategy is a woman-owned, military spouse-owned small business.
Jamie Garrett, Founder and Owner
Jamie brings 15 years of experience and success across environmental sustainability initiatives. She excels at systematically organizing goals into clear, actionable steps. Jamie has worked across the nexus of energy-water-food including in renewable energy space with EVs, with cleantech start ups, on sustainable water infrastructure, and on creating more equitable and accessible food systems. She believes a comprehensive outlook across this nexus, as well as a collaborative approach across relevant initiatives, will yield the most impactful outcome.
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Jamie has her BS in Business Administration from University of Illinois Champaign-Urbana and her MBA from the UC San Diego Rady School of Management. She worked with the Milken Innovation Center developing financial models and catalyzing programs and partnerships for sustainable water infrastructure in Israel and California, and spearheaded business development strategies for ENGIE, focusing on EV infrastructure, energy resiliency, and waste-to-energy growth initiatives. She serves as Secretary on Board of Directors for the Association of Women on Water, Energy, Environment (AWWEE), as co-chair for the Resiliency Working Group for San Diego Regional Climate Collaborative, as a board member for Cleantech San Diego, and has experience judging, evaluating, and advising cleantech startups, including for UC San Diego's Entrepreneurship Center, Cleantech Open, and LA Cleantech Incubator. Jamie also serves as Secretary on the City of San Diego's Climate Resiliency Advisory Board.
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Jamie has a passion for growing, preparing, and sharing food with her community. Through her life she has spent time volunteering on farms, educating children about food and cooking, and has been engaged with organizations such as Slow Food, Coastal Roots Farm, and many local San Diego farmers markets. Jamie connects her work to this passion through "Balanced-Palate".
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Amber brings a multidisciplinary background in climate science, research, and strategic communication to Trellis Strategy, contributing across analysis, content development, and cross-sector project support. She excels at translating complex environmental, social, and energy-related information into clear, compelling materials that guide decision-making and strengthen stakeholder engagement.
Her work spans the interconnected systems of climate, energy, transportation, water, food, and community resilience. Amber supports the development of strategic materials, newsletters, research summaries, and grant-related deliverables that help partners navigate emerging sustainability challenges. She is particularly driven by a commitment to environmental justice, ensuring that equity, accessibility, and community-centered perspectives remain central to her work.
Amber’s research experience includes conducting climate vulnerability analyses, assessing air and water quality indicators, examining the interactions between land use, transportation, and public health, and exploring the social and political drivers of environmental and food-system inequities. She has collaborated with community leaders, tribal partners, and nonprofit organizations to identify environmental health risks, uplift community priorities, and create accessible visual communication tools. In addition, she has supported the development of grant proposals, grant reporting, and administrative processes that advance sustainability and clean energy initiatives across the public and private sectors. Her approach is grounded in clarity, systems thinking, and a deep dedication to resilience and equity-focused outcomes.
She holds a Master of Advanced Studies in Climate Science & Policy from the Scripps Institution of Oceanography at UC San Diego and a B.A. in Environmental Studies from UC Santa Barbara with minors in Writing and French. Amber is committed to supporting collaborative, inclusive, and actionable sustainability work across the energy–water–food nexus.


Amber Gunsur, Strategy & Growth Manager

