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What Does Fenestration Look Like in a Zero Net Energy World?

Posted By Duane Jonlin, Seattle Energy Code Advisor, Monday, October 4, 2021

Last week I saw a bumper sticker on a huge black SUV: “There’s more to life than gas mileage.” This is true. While fenestration is responsible for a great deal of energy use (solar gain in summer, heat loss in winter, air infiltration around frames), the daylight and connection to the outdoors that windows provide is essential for our health and well-being.

Another thing that’s important for our health and well-being is mitigating the accelerating effects of climate change, and super-efficient buildings are the easiest way to do that. However, some commenters worry that constructing zero net energy buildings will mean living with “… tiny little windows, little windows so you can’t see out, can’t see the light,” to quote a recent president.

To keep from being stuck with those “little tiny windows,” we all know some performance boosts like warm edge spacers, thermal breaks, and fourth-surface low-e coatings. Beyond that, talk of triple glazing always raises hackles, but alternative technologies are emerging. LBNL has developed a “thin triple,” inserting a very thin center pane in the thickness of a typical double-pane unit. Vacuum insulated glass and several varieties of dynamic glazing are emerging. While these newer options might be beyond typical project budgets today, glazing is inevitably going to get more complex, and it’s essential to have NFRC keeping track of how all these perform.

For an entire century, architects have dreamed of buildings that are all glass, wall to wall and floor to ceiling, which turns out to be good for magazine covers but not much else. Strategic sizing and placement of glazing to optimize energy as well as comfort, daylight, and views for the occupants will require breaking out of the old all-glass mentality, which itself might require a new generation of architects. To quote Mark Frankel: “That which exists must be possible,” so if you want to see what the Zero Net Energy future looks like, start by checking out the hundreds of ZNE buildings that already exist, and then make your own even better.


Information on some of the new technologies may be found in the NFRC "Emerging Trends and Technology" webinar series. Visit the NFRC store for the titles and access to the webinars

 

Tags:  architecture  building code  buildings  carbon footprint  carbon neutral  Emerging TrendsNFRC ratings  energy efficient  Fenestration  industry  Seattle  technologies  window technologies  windows 

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VELUX 2030 Sustainability Strategy Sets Lifetime Carbon Neutral Goal

Posted By Adriana Vargas, National Fenestration Rating Council, Monday, April 26, 2021

 By Helle Carlsen Nielsen

 

When the VELUX Group launched our Sustainability Strategy 2030 last fall, we set an ambitious goal of becoming Lifetime Carbon Neutral by 2041. Using science-based targets, we’re taking responsibility for our past and our future carbon emissions. 

We call the strategy “It’s Our Nature,” and it’s a roadmap for the decade of action. It will transform the way we do business, and the products and solutions we provide.

To become Lifetime Carbon Neutral, we will capture our historical carbon footprint and at the same time reduce our future emissions for our company and value chain in line with climate science. To capture our historical carbon footprint since our founding in 1941, we partnered with the World Wide Fund for Nature (WWF) to conserve and restore the forests cover of an estimated 200,000 hectares of high-biodiversity value tropical forests. The first projects are located in Uganda and Myanmar, and all five forest projects are expected to be developed to capture approximately 5.6 million tons of carbon equal to our company’s emissions since our founding in 1941 through 2041.

Calculating our historical carbon footprint

How does a skylight manufacturer in business since 1941 with a growing footprint of sales companies in 40 countries, production facilities in 10 countries and approximately 11,500 employees measure the amount of carbon it emitted since its founding? 

No standard methodology exists today for how to calculate a historical carbon footprint, because valid emission factors and energy consumption data from decades ago often do not exist. Therefore, VELUX developed a method based on the recognized Greenhouse Gas Protocol Corporate Standard and applied it to our historical data. This methodology, including the underlying assumptions, are independently verified by Carbon Trust, which helps companies set targets for carbon reduction plans, and reviewed by scientific experts at WWF. The calculation includes our direct emissions from company facilities and cars and indirect emissions from the generation of purchased electricity, steam, heating, and cooling consumed by the company, since our founding. 

Becoming a carbon neutral company; reducing value chain emissions by 2030

The other part of becoming Lifetime Carbon Neutral is to reduce our future emissions in line with climate science. We are committed to become a 100% carbon neutral company (scope 1 and 2), and we will halve the carbon emissions from our value chain (scope 3) during the decade of action starting now through 2030. VELUX is committed to reduce future CO2 emissions in line with a 1.5°C decarbonization pathway, and our targets are validated by the Science Based Targets initiative.

 

Velux Chart

 

Other targets in our Sustainability Strategy 2030 include:

 

 

 

Our 2030 Sustainability Strategy also includes actions to ensure our company is diverse  and  inclusive and a healthy place to work. To that end, we set the following targets:

 

 

 

The meaning behind the name “It’s Our Nature”

Calling our sustainability strategy “It’s Our Nature” draws on two meanings: First, it  is our nature to have sustainability at the heart of our business. And second, we want to do our part to alleviate climate change and support the nature that we – and all life on earth – rely upon. 

Under that guiding principle, we will share our experience with other companies interested in taking responsibility of past and future carbon emissions. Join us on May 4, 2021, at 11 a. m. EDT for an NFRC webinar to learn the best practices and key takeaways we’ve gleaned thus far.

 

Helle Carlsen Nielsen, Head of Sustainability, External Relationsand Sustainability for The VELUX Group

Tags:  carbon emissions  carbon footprint  carbon neutral  energy efficiency  manufacturer  sustainability 

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About Us

The National Fenestration Rating Council (NFRC) is the trusted, independent, nonprofit certification body for the energy performance of windows, doors, and skylights. With more than 35 years of expertise, NFRC is the standard-bearer in fenestration performance certification, providing the public with objective data that helps stakeholders make informed decisions about product and building performance. NFRC certification ensures that products are tested using precise, scientifically validated methods, resulting in ratings that are fair, accurate and credible. Contact us at info@nfrc.org.

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