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Sequoia Engineering & Design Associates, Inc. (SEDA) is a full-service, multi-discipline engineering and design firm. We specialize in electrical and mechanical engineering, instrumentation and controls, and successful completion of critical projects for industrial, oil and gas, utility, independent power producers, renewable energy, and institutional sector clients.

Our mission is to develop long-term partnerships with our clients, build upon the dynamic foundations of the worldwide energy industry, and contribute to an increasingly prosperous and sustainable society.


Blueprint Design

Engineering & Design

We offer full-service engineering and design services, including planning and scoping studies, detail design, construction and commissioning support, and power and industrial systems controls.  Our team includes licensed engineers in all major disciplines.


Instrumentation, Controls
& Electrical Engineering

With over 30 years of experience in providing new and innovative approaches to automation and control, we are your partner in understanding your needs and developing solutions to meet them. From concept to commissioning, we are committed to developing, designing, and engineering your controls needs.

You can count on us to run design studies, design substations and develop solutions
for practical or difficult substation issues you face today.

Substation Design &
Power Delivery

Image by ThisisEngineering RAEng

Strategic Consulting,

Research & Development

We help clients to define the “big picture” and then clarify the front-end and development strategies to ensure successful project execution.

Geothermal Engineering

Project Management

& Project Engineering

We treat project management as a critical process to achieve competitive advantages through effective utilization of modern planning and control techniques.

We offer expertise in the integration of power and controls systems of sustainable natural heat sources that exist within the Earth and using them to produce energy for electrical power.


Sustainable Energy


  • Renewable

  • Reliability

  • Energy Storage

Pipes and Pressure

Oil & Gas

  • Bulk Fuel Distribution

  • Storage

  • Gas Distribution and Transmission

Fixing Electricity Lines

Power & Infrastructure

  • Transmission & Distribution

  • Substation Design

  • Instrumentation

  • Power Systems


Misty Slopes


Our commitment to creating a sustainable future

Sequoia’s commitment to sustainability is for the protection of the environment, the people in our communities, and our natural resources.  We strive to meet and exceed the environmental targets set by governing authorities in California, and every location in which we work.


We apply our experience and innovations in engineering, proven design processes, and knowledge of sustainable construction practices to develop, engineer, and design projects that support the environment, and those who are affected by our projects.


Head Office

2125 Oak Grove Road, Suite 300

Walnut Creek, CA 94598

Tel: 925-891-4183


We’re always interested in hearing from professionals who would like to know more about careers at Sequoia.


Please send your resume and cover letter to

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