EEBA's High Performance Home Blog

Hey Google, Show Me What’s Possible this Decade

We’re predicting the next 10 years will produce some of the most exciting changes in the building industry - and we get to be part of it.
Hey Google, Show Me What’s Possible this Decade

Saturday morning you wake up and realize you’re out of coffee and your fridge is empty. You’re hungry. You need coffee. But you really don’t want to get dressed and go to the coffee shop. So you grab your iPad and you order some food from the breakfast joint down the road and a giant coffee from your favorite coffee shop - scheduled to be delivered directly to your doorstep by Uber Eats.

You then say, “Hey Google”, and proceed to state various commands to set your NEST thermostat to 72 degrees, set the lights in the living room to your “Relax” mode, and turn on the television so you can watch SpaceX launch reusable rockets. Then your Ring doorbell alerts you that someone is at your door - it’s your coffee and breakfast.

This scenario is complete bliss to some, and a living nightmare to others. Most notably, however, is that this was an impossible chain of events just 10 years ago - because none of these technologies existed.

This new decade marks limitless possibilities for the advancement of technology and for some of the most exponential change ever seen in the building industry. If there was ever a time to push an idea and try something new, it’s now.

Solar technologies and renewables will continue to push energy efficiency forward. Net zero energy homes will become mainstream - from affordable housing to luxury custom homes to apartment buildings - across the board, we’ll consistently build shelter that occupants can actually afford to live in, have healthy IAQ, and are built using sustainable materials. It’s an exciting time to be working in our industry.

What building product or technology are you most excited to see evolve in the next decade? What predictions will you make for the building industry in the next decade? Imagine what we can accomplish together in the next 10 years!

New Year, New CEO

Welcome, Aaron Smith, EEBA's new Chief Executive Officer
New Year, New CEO

We are excited to announce that effective today, January 8th, Aaron Smith will be joining EEBA as CEO.

Aaron comes to us with over 20 years experience in construction, building products, sustainability and non-profit board leadership. He has worked for companies including Kohler, Uponor, ASSA ABLOY and Williams as well as startups in Silicon Valley and his own building and remodeling company.

Aaron previously served on non-profit Boards for Wolf Ridge Environmental Learning Center, was Board Treasurer of the Health Product Declaration Collaborative (HPDC); co-founded the CT Collaborative – Living Building Challenge; was a member of the International Living Future Institute – East Coast Congress and served on the Board of the CT Sustainable Business Council (CTSBC).

Aaron completed his undergraduate studies at West Point and St. Cloud State University and is a 2016 graduate of the Yale University MBA program with a focus in Sustainability. He loves hockey, hiking, skiing, gardening and spending time with his wife, Jennifer and 3 boys at their home in Minneapolis.

Please join us in welcoming Aaron to the EEBA team!

Aaron can be reached at and on his cell phone at 612-325-5719 and will be at the IBS show coming up in Las Vegas.

What Will 2020 Bring?

It’s hard to believe but we’ve reached the end of 2019. It’s been an incredible year filled with some great accomplishments and exciting potential.
What Will 2020 Bring?

We started the year off recognizing Mandalay Homes as they offered rooftop solar as a standard product on their homes and Health E Community Enterprises’ Zero Energy Ready Home communities. We also took a look at a Utah-based project where Sonnen EcoLinx batteries will be used to manage peak energy use and provide emergency power.

Material advancements were also in the news throughout the year. We took a look at key solar developments like floating PV, molecular solar thermal liquid, and a water flow glazing technology that captures solar radiation for heating, preheating, domestic hot water, and the storage or expenditure of excess energy.

In addition to these materials, keep an eye on other products like translucent wood, self-healing concrete, and 3D printed houses that will continue to advance and make news in 2020.

Data and AI will also contribute to advancements in the construction industry. It’s clear data is already important in determining optimal design for the greatest energy efficiency. It will become more and more important for projects of all sizes and will allow for even better predictions on how long a project will take, and pinpoint any potential challenges during the design phase. Data collection will be imperative for our continued advancements surrounding energy and usage.

And don’t worry, robotics will not likely become fully “aware” in 2020, but you’ll still want to keep up with how people are strategically utilizing this technology. Whether for safety or labor reasons, robotics will enhance and compliment many aspects of the construction industry. Just like Spot - a robot (you can actually buy) that has the capability to Inspect progress on construction sites, create digital twins, and compare as-built to BIM.

Thank you for supporting EEBA this year. We look forward to everything the new year has to offer and can’t wait to see you in 2020!


Energy Efficient Buildings of the Future

A team in Bulgaria recently opened a project to exhibit and test water flow glazing technology.
Energy Efficient Buildings of the Future

A demonstration project in Sofia, Bulgaria, is showcasing a water flow glazing (WFG) technology that utilizes water as a transparent insulator. Referred to as InDeWaG (Industrial Development of Water Flow Glazing Systems) and developed in Madrid, the project will demonstrate and test the efficiency of the system and its ability to maximize solar in varying temperatures during both winter and summer, as well as in very different climates.  [Photo courtesy InDeWaG]

The project consists of a pavilion with three walls with panes that use the WFG. The remaining wall and the floors are insulated to help achieve nearly zero energy building standards (in accordance with Bulgarian legislation).

As explained in a Bulgarian article:

“Each pane has a continuous flow of distilled water and glycol. Inside each window, there is a constant flow of 70 litres of distilled water and 30 litres of ethylene glycol, which serves as antifreeze. Each transparent panel acts as an individual solar collector. Using solar cells, the windows absorb solar radiation and turn it into thermal energy to heat the building's interior.”

"The advantage of using liquids instead of air inside the glass is that water is denser, so it absorbs infrared light in a broader range,” says Miglena Nikolaeva-Dimitrova, a physicist at the Bulgarian Academy of Sciences.

The captured solar radiation can be used for heating, preheating, domestic hot water, storage or expenditure of excess energy. Depending on the temperature of the water in the glass chamber within the window, the pane may act as either a heating or cooling unit. Temperature and humidity will be monitored consistently inside of the building and data collection for the demonstration pavilion will continue for 10 years.

Researchers believe the technology is ready to go to market for smaller homes and buildings but are also eager to prove that it can work on larger buildings.

Water Water Everywhere

71 percent of the Earth’s surface is covered in water. That’s a lot of water.
Water Water Everywhere

Floating houses are not a new concept and can be found all over the world. Growing up surrounded by water I knew a family (of SIX!) that lived in a houseboat. It was normal. We have them all over Lake Union in Seattle.

But what I haven’t seen a lot of in the U.S. is floating PV (FPV). In 2008 an FPV array was installed in Napa but as of 2017, the U.S. only had seven “operational” floating solar arrays. The National Renewable Energy Laboratory believes there are “more than 24,000 human-made bodies of water throughout the country with the potential of generating 10% of the nation’s electricity using FPV.”

Other reports state that the demand for this product will grow steadily by an average of 22 percent from now through 2024. By the end of this year (2019) there will be about 340 floating solar installations completed globally in 35 countries (mostly in Asia). The market is primarily driven by countries with “high land costs, limited land availability, or ambitious renewable energy targets.”

As with anything, there are pros and cons to FPV.

One of the most obvious pros is that FPV doesn’t take up valuable land that can be extremely costly to buy and develop. If you’re paying top price for land you likely don’t want to use a large portion of it for a solar array. Floating solar also provides shade on the surface of water which decreases evaporation and water loss in hot months while the water cools the panels, creating better efficiency.

The cons include FPV not being a great option for individual households (more suited for larger-scale projects) and the current cost to install, resulting from the need for specialized equipment.

As FPV is more widely adopted most experts believe the install costs will drop exponentially.

As more projects are installed we’ll obviously obtain better data. And with better data it will become easier to implement improvements that need to be made to drive the cost down. And once the cost starts to drop, new markets should open up for FPV - including sea-based PV projects. Keep will be interesting to watch this technology and to see if it “floats”.

Improving Air Sealing Efficiency in Off-site Construction

Government funding and collaboration will help to improve energy efficiency in off-site construction.
Improving Air Sealing Efficiency in Off-site Construction

Earlier this year, AeroBarrier headed out to North Carolina to begin a pilot program at Volumetric Building Companies’ factory located in Hamlet. As part of a 3-year project headed by the National Renewable Energy Laboratory (NREL), the pilot project is focused on both advancing energy efficiency in permanent modular construction, as well as discovering pathways for faster, more advanced manufacturing capabilities.

AeroBarrier was applied to a sample group of modular units to create initial baseline data.

This particular pilot project aims to prove the advanced air sealing techniques can be completed inside the factory both quickly and efficiently, and without substantial leakage losses during shipping and placement of the units on-site. Once the units are installed on-site, the boxes will be re-tested to verify how the in-factory air sealing held up during transportation and setting on-site.

The units were tested before and after the application of the AeroBarrier product using a blower door. The initial in-factory before and after data collected shows a reduction in envelope leakage ranging between 46.5% - 72.9%. More data will be collected after the units are placed in early 2020.

Also of note, the ICC recently announced they will be developing new standards with the help of the International Code Council Off-Site & Modular Construction Standards Committee. The main topics will include two standards focused on:

  • Planning, Design, Fabrication, and Assembly and
  • Inspection and Regulatory Compliance


NREL is also looking forward to working with the Committee to create energy standards for factories.

Subscribe to the EEBA Newsletter for more updates on this project as well as more energy and high performance news.


What Are You Thankful For?

It’s the week for giving thanks and there’s a lot to be grateful for at EEBA!
What Are You Thankful For?

2019 has been an incredibly successful year that has brought many new partners to EEBA, as well as new board members, and a bigger and better High Performance Home Summit where we had the privilege of rubbing shoulders with some of the most passionate and driven people in the industry.

We’ve seen new opportunities presented through our strengthened partnerships with RESNET, The U.S. Department of Energy Solar Decathlon, Professional Builder and Green Builder Media. We also continue our commitment to helping attract youth to the industry with our NextGen Scholarship Initiative.

We are also excited for a new national partnership program that offers both inclusivity and exclusivity - all while lowering the cost across the board and delivering more value and benefits to all of our partners. And then there’s all that anticipation surrounding the idea of having a new CEO!

EEBA staff, Nancy Bakeman and Cristen Burrell, are thankful for the incredible brain power and entertainment offered by EEBA Certified Instructors Gord Cooke, Mike Barcik, Bruce Sullivan, Justin Wilson, and Andy Oding while they teach building science at all the EEBA educational events.

And finally, we are thankful for you! We could not do what we do without your support, your knowledge, and your commitment to industry growth. We wish you a restful Thanksgiving and much time to reflect on all the things for which you have to be grateful!

Solar Breakthrough in Sweden

Researchers in Sweden create a liquid molecule with potential to release on-demand heat.
Solar Breakthrough in Sweden

A research team at Chalmers University of Technology in Sweden have identified a way to harness energy from the sun and store it (potentially for decades), releasing the energy as on-demand heat.

The molecular solar thermal liquid is made of carbon, hydrogen and nitrogen and has the ability to collect solar energy and hold it until a catalyst triggers its release as heat. The Swedish team is currently focused on the heating benefits, although one of the big, unanswered questions that remains is whether or not the system can additionally produce electricity.

Kasper Moth-Poulsen, lead researcher and a professor in the university’s department of chemistry and chemical engineering also believes the storage unit they’ve created for the technology has the “stability to outlast the 5-to 10-year life span of typical lithium-ion batteries on the market today.”

One of many research groups looking to molecular thermal solar systems to provide solutions for climate change, the technology has the potential to be used in window coatings, heating vehicles and buildings, or even clothing design. The team will be coating an entire building in the material to show what can be achieved and expect it to reduce electricity needs for heating.

If they are able to obtain $5 million of funding they believe the storage unit could be commercialized in six years and the coating in three. Others doing similar research in thermal solar systems believe their work is “crucial if we want to see the energy conversion storage approach commercialized.”

Keep following this technology as it will be interesting to see the advancements. While there are currently no cost estimates, there are no requirements for expensive rare elements and the team recognizes that it needs to be affordable.

Around the Globe

See what’s happening around the world surrounding energy efficiency.
Around the Globe

Ithaca, New York

The Solar Home Factory, based in Geneva, New York is on a mission to build zero-energy homes. The company is birthed out of the desire to find solutions for heating issues in their region and to move people towards air pumps. What they found, however, is that most homes weren’t efficient enough for them so they continued using natural gas, coal or wood pellets.

The Solar Home Factory utilizes SIPs and combines modular techniques with net-zero energy homes. In a previous development, homeowners were paying around 20 cents per day in heating costs (before solar credits).

They are currently working on 43-unit single family home project in Ithaca, New York.

Melbourne, Australia

$784,000 was recently funded to a real estate group, Mirvac, to test a “net zero energy” housing project in a Melbourne suburb.

The 49-townhome planned community will demonstrate the feasibility of achieving net-zero energy homes at scale and show homeowners how they can greatly reduce energy bills.

Philadelphia, PA

Philadelphia’s 2030 District initiative is a voluntary program where building owners and managers work to reduce their carbon footprint.

To date, around 50 buildings have joined and committed to improving their energy efficiency by 50 percent by 2030. A recent report showed the initiative is more than halfway to their target!

Tell us what is happening in your area around energy efficiency!

NAHB’s Sustainability & Green Building Scholarship

The National Association of Home Builders is offering a qualified applicant a scholarship to the International Builders’ Show next year.
NAHB’s Sustainability & Green Building Scholarship

Are you a student in a two-year or four-year university/college, vocational, apprenticeship, or other training program? Are you a recent graduate within the past 2 years? Or maybe you’re a young professional looking for a career shift? If you answered “yes” to any of these questions, you may be eligible to apply for the NAHB’s Sustainability and Green IBS Scholarship and attend the International Builders’ Show for free.

The Sustainability and Green IBS Scholarship provides an opportunity for students and recent graduates to be introduced to the world of high performance homes and helps them make the connections to jumpstart their career.

The Scholarship recipient will receive airfare (up to $600), hotel accommodations (four nights), and a full registration to the International Builders’ Show in Las Vegas on Jan. 21-23, 2020. They’ll be able to walk the show floor and take in all the latest products, and will also have access to networking events and a variety of educational sessions.

Do you care about the future of the industry and attracting new talent? Encourage a young building professional or current student interested in high performance homes and sustainable building to apply for the scholarship no later than November 15th. Share this on your social media channels and tag #eebaNextGen #IBS2020!

If you would like to contribute to the Sustainability & Green Building IBS Scholarship Fund please contact Anna Stern. Donations raised for this fund will provide the opportunity for more students to be supported to attend future International Builders’ Shows.

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