Zero Net Energy

Zero Carbon Retreat

January 25-26, 2018
come for a micro-revolutionary two day conference, stay for a hosted weekend vacation
Devoted to the All-Electric, Solar-Powered Building Type
Arcata, CA
January 25-26, 2018

Day 1 and 2: Merryman's Beach House at Moonstone Beach, followed by kayaking on the Little River, dinner, drinks, live music and reservations made for you at Cafe Mokka Hot Tubs and Saunas

Day 3 and 4: Hike in the Redwood Forest, swim in the Potowat (aka Mad) River, pick Blueberries at a local organic farm and hang out around the campfire.

Join Industry Leaders As They Present Case Studies and Technical Deep Dives

Zero Carbon and Zero Net Energy

  • Electricity is cheaper--Redwood Energy shows how to break through the cost barrier

  • Researchers present the newest data on fugitive Methane emissions and true CO2 equivalency

  • Case studies in fuel switching existing buildings of all sizes and types

Tiny Houses and Big Buildings

  • Design Charrette: Help LivingHomes fuel switch their new modular tiny home line

  • Design Charrette: How tall can we build ZNE apartments in San Francisco?

Advanced Tricks of the Trade:

  • It's "open source" so...engaging and changing CBECC-RES to meet your modeling needs.

*All Organic Meals and Drinks grown by local farmers and prepared with panache

*Free Professional Massages in the sun

*Free child care

*Free housing at the Redwood Lily Guest House for speakers

*No-cost hosted bar


Ann Edminster

Ann Edminster, M.Arch., is an international expert on sustainable residential construction and zero net energy. A principal developer of LEED for Homes, Ann authored Energy Free: Homes for a Small Planet, the award-winning guide to designing and building zero-energy homes. She consults on zero-energy initiatives throughout North America, served as a 2015 US DOE Solar Decathlon juror, and is a board member and the project director for the Net Zero Energy Coalition.

Rick's Photo

Rick Chitwood, BSME, founder and principal of Chitwood Energy Management Inc., is an expert in energy-efficient residential building construction, diagnostic testing, and performance evaluation. His home performance contracting business was founded in 1985 with the company’s first blower door purchase and grown. Rick is the author of the Quality Installed Insulation checklist and the co-author of the book Measured Home Performance.

Naomi Wentworth Headshot

Naomi Wentworth works with local governments to create effective greenhouse gas inventories. This entails quantifying emission sources that are currently outside the standardized inventory methodology to better understand quickly mitigatable emissions sources within governmental control. She will be speaking about one example of this - the vastly underestimated natural gas emissions within cities and the lifecycle of the fuel to give a greater context of why we design ZNE buildings.

Will Vicent

Will Vicent is the Project Manager and CEM with Southern California Edison's ZNE research program. Previously Will was the owner of Between Built & Natural Environments, a building science consulting firm dedicated to reimagining our built environment into one that is more sustainable; more beautiful and more ecologically intelligent.


Vanessa Guerra has been a staff member of Mutual Housing California, a non-profit affordable housing developer, since June 2007 and now serves as a senior project manager in the Housing Development Department. Her projects include an award-winning ZNE farmworker apartment complex.

Nick Maderas

Nick Maderas develops equipment solutions for controlled environment facilities. He is a manufactures rep for LED horticultural lighting, HVAC, and water treatment systems and provides design assistance to MEP Engineers, greenhouse manufacturers, and farmers. He works with the SCGA (Sonoma County Growers Alliance), NMGA (National Greenhouse Manufactures Association), PG&E and the CEC to develop and implement efficiency measures in the horticulture industry.

Lori Atwater

Lori Atwater is the Program Manager for the ZNE Residential New Construction program at Southern California Edison (SCE). She is a graduate of California Polytechnic State University-San Luis Obispo.

Bob Massaro

With Thriving Communities Bob Massaro and his partners and investors bring forward “Community By Design” that include ZNE, ultra-low water consuming projects built for the 3 economic levels - workforce, affordable and market-rate housing.

Alisa Petersen

Alisa Petersen is an Associate at the Rocky Mountain Institute on their Buildings team. She currently works on the Residential Energy+ initiative analyzing paths to zero net energy in retrofitted low income housing in the San Francisco Bay Area, New York and Vancouver.

Steve Glenn

Steve Glenn is the founder and Managing Director of LivingHomes and the founder and CEO of Plant Prefab, Inc. LivingHomes ( is a designer and developer of modern, prefabricated homes that combine world-class architecture with an unparalleled commitment to healthy and sustainable construction.

Amy Dryden

Amy Dryden is a technical lead for meeting California's ambitious GHG reduction goals by 2050. Amy has worked as a Certified Green Building Professional, a Certified GreenPoint Rater, a LEED-AP, and a HERS rater. She received a BA in Anthropology from BU and a Master in Landscape Architecture and a Master in City Planning from UC Berkeley. Build It Green is a member-supported non-profit organization promoting healthy, energy and resource-efficient building practices in California.

Dan Johnson

Dan Johnson is a licensed Architect and Certified Energy Analyst with Beyond Efficiency. Dan is an expert on sustainable buildings and early-design energy modeling, Dan enjoys creative problem solving and using his broad skillset to bridge gaps between architects, engineers, owners, and contractors.

Jenna Bader

Jenna Bader is a Multifamily Sustainability Consultant for Redwood Energy, and is a certified residential CEA, BIG Green Point Rater and BPI MF Building Operator. Since the last ZNE retreat, she has been conducting research trial runs using 2016 and 2019 T24 Energy Compliance Software to show comparisons between gas and electric homes. Jenna will be presenting the energy consumption, annual utility costs and CO2 emissions for various scenarios of a case study home in San Leandro.

Clay Johnson

Clay Johnson is a residential designer in Davis and Humboldt County specializing in high performance homes, both custom and production housing.

Courtney Brown III

Courtney Brown is an Associate with LACO Engineers and in her prior role as a Redwood Energy intern she developed photographic ZNE building codes for the sovereign Bear River Band and zero-irrigation landscape design.

Nehemiah Stone

Nehemiah Stone's career in building science has spanned decades with leadership positions at the Energy Commission, HMG, Benningfield Group and now Stone Energy Associates. His background as a trained economist and general contractor have allowed him to solve building science challenges collaboratively.

Redwood Energy Team

The Redwood Energy Intern Team produces professional quality work on some of the most complicated and pressing topics that require a group effort, such as their successful effort to reprogram the Energy Commission's software to show DHW thermal storage at varying temperatures and times.

Lonny Grafman

Lonny Grafman is the Chief Product Officer of Nexi, an in-home energy monitor developed with Redwood Energy that focuses on beauty and intuition instead of numbers. Lonny is also a popular Instructor of Energy and Sustainable Design at HSU; the Advisor for the epi-apocalyptic city art, Waterpod, Flock House, and Swale; the Executive Editor of IJSLE; the Founder and President of the Appropedia Foundation, sharing knowledge to build rich, sustainable lives.

Debra Little

Debra Little educates Real Estate professionals for PG&E in valuation of ZNE housing as is part of the leadership team of the Net Zero Energy Coalition. She is an both an Appraiser and a Rater for the Green Point Rated program. Debra teaches across the US on valuation of high performance and ZNE home assets.

Lucas Morton

Luke Morton is a Title 24, Passive House, and occasional green building consultant. He has worked on a long list of ZNE and Passive House projects, and has been involved in policy advisory committees for various municipal green building ordinances and energy reach codes. Earlier in his career, he spent time with the USGBC and Rocky Mountain Institute in various fellowship roles.

Kaileigh Vincent Welling

Kaileigh Vincent Welling is an Engineer In Training and responsible for Redwood Energy's zero-irrigation landscape design program.

Bryan Dove headshot

Bryan Dove is Director of Asset Management with Mutual Housing California and is responsible for the overall performance of their affordable housing portfolio, including large solar arrays dating back to the early 2000s.

Head shot with piglet

Sean Armstrong has co-designed the largest portfolio of 100% solar powered residences in the nation, with 24,000+ hours of experience designing "Zero Net Energy" affordable housing since 2005. Sean now assists with the development of the 2017 and 2020 ZNE Energy Code. In his spare time he focuses on sustainable agriculture and has written a guide on edible landscaping, imported a rare breed of grass-fed pigs from NZ to the USA, and sponsors farmworker Tiny Houses.

Greg Pfotenhauer

Greg Pfotenhauer is a data analyst for Build It Green and Redwood Energy, processing the nation's largest database of residential energy use. Greg was previously a researcher at the Schatz Energy Research Center for the Lighting Africa and Lighting Global programs.

Larry Schlussler

Larry Schlussler founded Sun Frost where he developed an array of products to promote sustainable living. The principle product of Sun Frost has been energy efficient refrigeration. The refrigerators have been used on and off the grid domestically and in over 50 developing countries for vaccine storage. Sun Frost has also developed energy efficient showers, task air conditioners for sleeping, a unique strategy for daylighting, and various methods of low power cooking.


Roger is one of the nation's leading solar installers dating back to the 1970s, with no project too small or too large. His labor-only price structure has allowed countless lower income home owners and non-profits to affordable solarize their buildings.


This Conference is Sponsored by REDWOOD ENERGY