About Us

Together Redwood Energy has led the design of more than 1500 units of Zero Net Energy, all-electric affordable housing, and 200 all-electric market rate residences. We provide Title 24 modeling, design support and Utility Allowance modeling to create cost-effective Zero Net Energy housing. Our projects range from cottages to high rise residences, commercial spaces and large facilities. Our clients include:

  • Tesla Energy
  • California Energy Commission
  • AMCAL
  • Affirmed Housing
  • BRIDGE
  • CHISPA
  • Danco Communities
  • Eden Housing
  • Midpen
  • MRK Partners
  • Mutual Housing California
  • National CORE
  • Pacific Communities
  • Redwood Coast Energy Authority
  • Related Companies
  • Standard Properties
  • Strombeck Properties

Sean Armstrong is the Managing Principal of Redwood Energy and has worked for 25 years in building electrification, designed the retrofit and new construction of more than 10,000 all-electric residences for disadvantaged populations, co-authored five practical guides to building electrification, provided legal and technical support to dozens of gas bans nationwide, helped develop the 2016/2019/2022 and 2025 Title 24 California Energy Codes, and has received sustainable design awards from the United Nations, the U.S. Department of Energy and the SoCal Building Industry Association.


Michael Winkler designed and lives in a remodeled Net Zero house, was part of engineering teams that designed one of the nation’s first cell phone systems and the world’s most-efficient hydrogen fuel cell, and has programmed a version of the CUAC that is more accurate with netzero developments. In addition to multiple energy credentials (EIT, CEPE, HERS, BPI), Michael is a software engineer. Michael served for 8 years on the City of Arcata Planning Commission 2 years on the City’s Energy Task Force, and is currently the Mayor of the City of Arcata.


Jenna Bader

Jenna Bader is a Certified Energy Analyst, Green Rater and Zero Net Energy Design Consultant for Residential single family and multifamily buildings. She holds current Certifications as a CABEC Certified Energy Analyst, Build It Green Green Point Rater New Homes Rater, LEED for Homes Green Rater and a Build It Green Certified Green Building Professional. Her experience includes 4 years of energy efficiency and water conservation outreach with PowerSave Campus and 2 years writing Sustainability-driven Building Standards at Humboldt State University where she received a B.S. in Energy and Climate Science in 2014. During her career with Redwood Energy, she has co-authored ZNE Building Codes for a local tribe’s Energy Sovereignty project and authored Green Operations and Maintenance Manuals for (17) Affordable Housing Communities through an Enterprise Green Communities grant. She enjoys beach adventures, homesteading, bicycle riding and being an “Eco-Hero” while converting a short school bus into an eco-friendly adventure mobile.


Emily Higbee has led research in domestic hot water use and modeling, resilient home design for extreme weather events, and facilitates Redwood Energy’s ongoing Zero Emissions Construction Guide Series.  Emily is also the project manager of Redwood Energy’s CEC funded EPIC grant on Central Heat Pump Water Heater Load Flexibility and manages staff researcher projects that cover a wide range of topics on building electrification.


Dylan Anderson is a graduate of the Environmental Science program at Humboldt State, with a focus in Energy and Climate. As a Senior Staff Researcher he helps write reports, compile energy analysis and affordable housing documentation, and find more information on topics and products we want to know more about.


Stephanie Becerra, Development Project Manager at Redwood Energy

Stephanie Becerra is our Development Project Manager. She graduated with a B.S. in Environmental Science – Energy and Climate from Humboldt State University. With a strong passion for sustainability her background includes completing a service term with AmeriCorps as an Urban Forestry and Drought Specialist, interning for Grid Alternatives as a Community Outreach Intern promoting the installment of solar power systems in under-served communities, volunteering with the San Diego River Park Foundation and San Diego River Garden. Stephanie shares the belief that sustainability means meeting the needs of the present without compromising the ability of future generations to meet their own needs. In her spare time, she likes to volunteer at beach and community cleanups, tree planting events and learn about regenerative agriculture. She is a Farming 101 graduate from Wild Willow Farm & Education Center in her hometown San Diego.


Kelsey Martin, staff researcher at Redwood Energy

Kelsey Martin is a Staff Researcher focusing on green building certification programs, equity in electrification, energy rate structures, writing reports, etc. She is an apprentice for our Energy Analyst, Jenna Bader, on green-building programs such as LEED for Homes and Green Point Rated. Kelsey attended Humboldt State University where she received a B.S. in Environmental Science concentrating in Energy and Climate. Currently, she is also working for the City of Arcata in the Environmental Services department launching their Building Electrification initiatives, among other environmental projects and research. She is proud to be contributing to sustainable, more equitable future.


Rebecca Hueckel is a Humboldt State graduate with a bachelors in Environmental Science: Climate and Energy and a minor in Scientific Diving. Climate change is a problem that needs to be addressed and she is proud to be helping the great minds of today find efficient, effective and practical solutions. As a Senior Staff Researcher, Rebecca is dedicated to advancing knowledge in the ZNE field for both new and retrofitted buildings.


Hannah Cantrell is a Staff Researcher at Redwood Energy. Originally from Sacramento, California, she is a student-athlete studying Environmental Science with a focus in Energy and Climate, and currently in her last year of undergraduate studies at Humboldt State University.


Isabella Barrios Silva is an undergraduate architecture student at UNC Charlotte and a Staff Researcher at Redwood Energy. She has been working with professors, mentors, and professionals to investigate solar and sustainable strategies within the architecture field. She has also been involved in the NSF I-Corps convention in 2020 to learn about the marketplace within the solar industry and the feasibility of their BIPV facade in the marketplace. 


Anissa Stull is a Staff Researcher at Redwood Energy. Originally from San Diego, California, she is currently in her third year at Humboldt State University studying Environmental Resources Engineering. She is interested in all things renewable energy as well as all electric housing.