SION, Switzerland and SELZACH, Switzerland, April 20, 2026 /PRNewswire/ — Smartflyer announces the successful delivery of the first batch of Adagio battery modules from H55, marking not only a key milestone in the development of the Smartflyer SFX1 aircraft, but also a significant step in the industrialisation and commercial deployment of H55’s certified electric propulsion technologies.

For Smartflyer, the delivery represents a critical step forward in the SFX1 Proof of Concept Demonstrator program, enabling the transition from component-level validation to full system integration and testing. For H55, it marks the continued integration of its certification-ready battery systems into active aircraft programs, reinforcing its position as a provider of scalable, commercially deployable electric propulsion solutions.

The newly delivered Adagio battery modules will be integrated into the SFX1 Aircraft as part of the next phase of development. This includes comprehensive system-level validation covering propulsion architecture, energy management, and other critical aircraft systems, in preparation for the upcoming ground test campaign.

At the same time, this milestone reflects the maturity and readiness of H55’s product portfolio. The Adagio battery system has successfully completed all regulator-required certification tests, demonstrating its safety, reliability, and suitability for integration across a growing range of electric and hybrid-electric aircraft applications.

The SFX1 program is now entering an advanced stage of development, with integration activities intensifying across multiple workstreams. Ongoing efforts focus on coordinating installation, calibration, and test readiness to ensure a smooth transition into the next milestones. Ground testing of the SFX1 is planned for this summer, with the first flight targeted for autumn, keeping the program aligned with its development roadmap.

“Receiving the first Adagio battery modules from H55 is a major milestone for Smartflyer and a key enabler for the next phase of our development program. It also highlights the strength of our collaboration with a partner whose technology is not only innovative but ready for real-world application. Together, we are taking concrete steps toward bringing efficient and sustainable aviation solutions to market,” said Rolf Stuber, CEO of Smartflyer.

“This delivery marks an important step in bringing H55’s certified battery and propulsion solutions into operational aircraft programs. Our collaboration with Smartflyer illustrates how our technology, spanning both electric and hybrid-electric configurations, is moving from development into commercial application, enabling aircraft manufacturers to accelerate their path to flight. We are proud to support the SFX1 program and contribute to the broader adoption of electric and hybrid-electric aviation,” said Rob Solomon, Chief Executive Officer of H55.

About H55

H55 is a Swiss-based company specializing in certified electric propulsion and certification-grade energy storage systems for aviation. The company enables electric aviation to scale by transforming commercial lithium cells into aviation-safe Energy Storage Systems that regulators approve, insurers underwrite, and OEMs can deploy repeatedly as a certified propulsion platform across aircraft programs. This is achieved through independent cell characterization, rigorous incoming screening, redundant safety architectures, and regulator-aligned testing designed around worst-case failure scenarios.

Founded as the technological legacy of the Solar Impulse program, H55 builds on more than two decades of hands-on electric aviation experience. The company has designed, built, and flown multiple electric aircraft and has accumulated more than 2,000 hours of fully electric flight with zero battery-related incidents—providing the operational depth required to execute certification-grade programs, not merely comply with them.

H55 benefits from a strong and experienced leadership team that combines deep expertise in scaling technology companies with hands-on operational execution. Together, these capabilities support a reliable transition from certified design to repeatable series manufacturing. H55’s platform-based approach, in which certification evidence compounds across programs, reduces adoption risk while facilitating the capital-efficient deployment of electric and hybrid-electric aircraft.

About Smartflyer

Smartflyer is a Switzerland-based aviation company developing the SFX1, an innovative hybrid-electric aircraft designed for sustainable pilot training. By combining advanced electric propulsion with a range extender architecture, Smartflyer aims to significantly reduce emissions and operating costs while maintaining operational flexibility. The SFX1 program is currently progressing through its Proof of Concept phase, with a strong focus on certification-ready technologies and scalable solutions.

Contacts

H55 : 
Axelle Krummenacher – axelle.krummenacher@h55.ch – +41 79 464 2260

Smartflyer : 
Dominik Heiri – dominik.heiri@smartflyer.ch – +41 79 946 00 60          

H55 SA
Route de l’Aéroport 10 1950 Sion
Switzerland
www.h55.ch

Photo: https://mma.prnewswire.com/media/2960207/H55_Smartflyer.jpg
Logo: https://mma.prnewswire.com/media/2952062/5924878/H55_Logo.jpg

 

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SOURCE H55

LINCOLN, Neb., April 20, 2026 /3BL/ – Iconic science educator Bill Nye joins the Arbor Day Foundation in the fourth episode of its new podcast, “Unearthing Optimism.”

In a conversation with CEO and host Dan Lambe, Nye shares his journey to becoming the host of a beloved children’s science show, his passion for space exploration, and why the next generation gives him hope for the future.

“You can’t help but smile when you listen to Bill. He has an irresistible energy and humor that multiple generations have come to know and love. This episode is a must-listen for anyone who believes science can save the world,” said Lambe. “In a time when it’s easy to feel overcome by challenges, this podcast is a way for people to embrace hope. We’re grateful for the many listeners who are joining us on this journey.”

“Unearthing Optimism” is a new kind of climate conversation, featuring a series of influential and trusted voices shaping culture, science, and how we understand our changing world. It’s available to stream or download on all major podcasting platforms including Spotify, Apple Podcasts, and Amazon Music.

The podcast is produced in part by the Arbor Day Foundation, the world’s largest tree planting nonprofit. Since its founding in 1972, the Arbor Day Foundation has helped to plant more than 500 million trees.

About the Arbor Day Foundation

The Arbor Day Foundation is a global nonprofit inspiring people to plant, nurture, and celebrate trees. They foster a growing community of more than 1 million leaders, innovators, planters, and supporters united by their bold belief that a more hopeful future can be shaped through the power of trees. For more than 50 years, they’ve answered critical need with action, planting more than half a billion trees alongside their partners.

And this is only the beginning. 

The Arbor Day Foundation is a 501(c)(3) nonprofit pursuing a future where all life flourishes through the power of trees. Learn more at arborday.org.

###

LINCOLN, Neb., April 20, 2026 /3BL/ – Iconic science educator Bill Nye joins the Arbor Day Foundation in the fourth episode of its new podcast, “Unearthing Optimism.”

In a conversation with CEO and host Dan Lambe, Nye shares his journey to becoming the host of a beloved children’s science show, his passion for space exploration, and why the next generation gives him hope for the future.

“You can’t help but smile when you listen to Bill. He has an irresistible energy and humor that multiple generations have come to know and love. This episode is a must-listen for anyone who believes science can save the world,” said Lambe. “In a time when it’s easy to feel overcome by challenges, this podcast is a way for people to embrace hope. We’re grateful for the many listeners who are joining us on this journey.”

“Unearthing Optimism” is a new kind of climate conversation, featuring a series of influential and trusted voices shaping culture, science, and how we understand our changing world. It’s available to stream or download on all major podcasting platforms including Spotify, Apple Podcasts, and Amazon Music.

The podcast is produced in part by the Arbor Day Foundation, the world’s largest tree planting nonprofit. Since its founding in 1972, the Arbor Day Foundation has helped to plant more than 500 million trees.

About the Arbor Day Foundation

The Arbor Day Foundation is a global nonprofit inspiring people to plant, nurture, and celebrate trees. They foster a growing community of more than 1 million leaders, innovators, planters, and supporters united by their bold belief that a more hopeful future can be shaped through the power of trees. For more than 50 years, they’ve answered critical need with action, planting more than half a billion trees alongside their partners.

And this is only the beginning. 

The Arbor Day Foundation is a 501(c)(3) nonprofit pursuing a future where all life flourishes through the power of trees. Learn more at arborday.org.

###

LINCOLN, Neb., April 20, 2026 /3BL/ – Iconic science educator Bill Nye joins the Arbor Day Foundation in the fourth episode of its new podcast, “Unearthing Optimism.”

In a conversation with CEO and host Dan Lambe, Nye shares his journey to becoming the host of a beloved children’s science show, his passion for space exploration, and why the next generation gives him hope for the future.

“You can’t help but smile when you listen to Bill. He has an irresistible energy and humor that multiple generations have come to know and love. This episode is a must-listen for anyone who believes science can save the world,” said Lambe. “In a time when it’s easy to feel overcome by challenges, this podcast is a way for people to embrace hope. We’re grateful for the many listeners who are joining us on this journey.”

“Unearthing Optimism” is a new kind of climate conversation, featuring a series of influential and trusted voices shaping culture, science, and how we understand our changing world. It’s available to stream or download on all major podcasting platforms including Spotify, Apple Podcasts, and Amazon Music.

The podcast is produced in part by the Arbor Day Foundation, the world’s largest tree planting nonprofit. Since its founding in 1972, the Arbor Day Foundation has helped to plant more than 500 million trees.

About the Arbor Day Foundation

The Arbor Day Foundation is a global nonprofit inspiring people to plant, nurture, and celebrate trees. They foster a growing community of more than 1 million leaders, innovators, planters, and supporters united by their bold belief that a more hopeful future can be shaped through the power of trees. For more than 50 years, they’ve answered critical need with action, planting more than half a billion trees alongside their partners.

And this is only the beginning. 

The Arbor Day Foundation is a 501(c)(3) nonprofit pursuing a future where all life flourishes through the power of trees. Learn more at arborday.org.

###

LINCOLN, Neb., April 20, 2026 /3BL/ – Iconic science educator Bill Nye joins the Arbor Day Foundation in the fourth episode of its new podcast, “Unearthing Optimism.”

In a conversation with CEO and host Dan Lambe, Nye shares his journey to becoming the host of a beloved children’s science show, his passion for space exploration, and why the next generation gives him hope for the future.

“You can’t help but smile when you listen to Bill. He has an irresistible energy and humor that multiple generations have come to know and love. This episode is a must-listen for anyone who believes science can save the world,” said Lambe. “In a time when it’s easy to feel overcome by challenges, this podcast is a way for people to embrace hope. We’re grateful for the many listeners who are joining us on this journey.”

“Unearthing Optimism” is a new kind of climate conversation, featuring a series of influential and trusted voices shaping culture, science, and how we understand our changing world. It’s available to stream or download on all major podcasting platforms including Spotify, Apple Podcasts, and Amazon Music.

The podcast is produced in part by the Arbor Day Foundation, the world’s largest tree planting nonprofit. Since its founding in 1972, the Arbor Day Foundation has helped to plant more than 500 million trees.

About the Arbor Day Foundation

The Arbor Day Foundation is a global nonprofit inspiring people to plant, nurture, and celebrate trees. They foster a growing community of more than 1 million leaders, innovators, planters, and supporters united by their bold belief that a more hopeful future can be shaped through the power of trees. For more than 50 years, they’ve answered critical need with action, planting more than half a billion trees alongside their partners.

And this is only the beginning. 

The Arbor Day Foundation is a 501(c)(3) nonprofit pursuing a future where all life flourishes through the power of trees. Learn more at arborday.org.

###

LINCOLN, Neb., April 20, 2026 /3BL/ – Iconic science educator Bill Nye joins the Arbor Day Foundation in the fourth episode of its new podcast, “Unearthing Optimism.”

In a conversation with CEO and host Dan Lambe, Nye shares his journey to becoming the host of a beloved children’s science show, his passion for space exploration, and why the next generation gives him hope for the future.

“You can’t help but smile when you listen to Bill. He has an irresistible energy and humor that multiple generations have come to know and love. This episode is a must-listen for anyone who believes science can save the world,” said Lambe. “In a time when it’s easy to feel overcome by challenges, this podcast is a way for people to embrace hope. We’re grateful for the many listeners who are joining us on this journey.”

“Unearthing Optimism” is a new kind of climate conversation, featuring a series of influential and trusted voices shaping culture, science, and how we understand our changing world. It’s available to stream or download on all major podcasting platforms including Spotify, Apple Podcasts, and Amazon Music.

The podcast is produced in part by the Arbor Day Foundation, the world’s largest tree planting nonprofit. Since its founding in 1972, the Arbor Day Foundation has helped to plant more than 500 million trees.

About the Arbor Day Foundation

The Arbor Day Foundation is a global nonprofit inspiring people to plant, nurture, and celebrate trees. They foster a growing community of more than 1 million leaders, innovators, planters, and supporters united by their bold belief that a more hopeful future can be shaped through the power of trees. For more than 50 years, they’ve answered critical need with action, planting more than half a billion trees alongside their partners.

And this is only the beginning. 

The Arbor Day Foundation is a 501(c)(3) nonprofit pursuing a future where all life flourishes through the power of trees. Learn more at arborday.org.

###

ALPHARETTA, Ga., April 20, 2026 /PRNewswire/ — Arclin’s Firepoint® fire‑resistant sheathing has been recognized as a Sustainable Product of the Year by Green Builder Media for the second consecutive year, honoring the product’s innovation, real‑world performance, and measurable contributions to safer, more sustainable homes.

Firepoint is a proprietary sheathing that provides up to 90 minutes of fire resistance when used in wall assemblies, exceeding code by 50 percent or more to slow fire spread and give people critical time to protect lives and property.* New in 2026, Firepoint now supports larger panel sizes, including 4×9 and 4×10, making it ideal for tall-wall and multifamily construction.

Firepoint’s design simplifies assemblies, reducing the need for extra layers or fire treatments, contributing to a more sustainable and efficient building process. Suitable for construction in wildland urban interface (WUI) zones**, Firepoint advances sustainability by supporting longer-lasting builds and reducing the environmental impact of wildfire reconstruction. By reducing materials, labor, and carbon emissions, the panel helps builders create resilient homes that withstand extreme events while conserving resources.

“Our Firepoint sheathing exemplifies the kind of innovation that moves the building industry forward,” said Bradley Bolduc, Chief Executive Officer of Arclin. “This recognition reflects the role Firepoint plays in advancing resilience, safety, and sustainability, helping builders construct homes that protect lives, preserve resources, and offer design flexibility.”

Firepoint integrates intumescent technology into the panel, protecting walls from fire without compromising structural performance, strength, or design. The new 10-foot panel elevates this performance by responding directly to builder demand for faster installation, fewer seams, and greater efficiency in real-world construction.

“One of the biggest advantages of Firepoint is how seamlessly it fits into existing building practices,” said Teong Tan, Chief Research Officer at Arclin. “By aligning with standard OSB applications and expanding panel sizes, we’re making it easier for builders to adopt higher-performing materials at scale.”

For more information about Firepoint, visit https://firepoint.arclin.com/.

*Per ASTM E-119 in a third-party accredited lab.

**Meets California WUI (Chapter 7A) requirements.

About Arclin
Arclin is a leading materials science company and manufacturer of polymer technologies, engineered products, and specialized materials for construction, agriculture, transportation infrastructure, weather & fire protection, pharmaceutical, nutrition, electronics, design, aerospace, defense, personal protection, and other industries. Headquartered in Alpharetta, Georgia, Arclin has offices and manufacturing facilities across North & South America, Europe, and Asia and serves customers worldwide. For more information, visit www.arclin.com.

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SOURCE Arclin

ALPHARETTA, Ga., April 20, 2026 /PRNewswire/ — Arclin’s Firepoint® fire‑resistant sheathing has been recognized as a Sustainable Product of the Year by Green Builder Media for the second consecutive year, honoring the product’s innovation, real‑world performance, and measurable contributions to safer, more sustainable homes.

Firepoint is a proprietary sheathing that provides up to 90 minutes of fire resistance when used in wall assemblies, exceeding code by 50 percent or more to slow fire spread and give people critical time to protect lives and property.* New in 2026, Firepoint now supports larger panel sizes, including 4×9 and 4×10, making it ideal for tall-wall and multifamily construction.

Firepoint’s design simplifies assemblies, reducing the need for extra layers or fire treatments, contributing to a more sustainable and efficient building process. Suitable for construction in wildland urban interface (WUI) zones**, Firepoint advances sustainability by supporting longer-lasting builds and reducing the environmental impact of wildfire reconstruction. By reducing materials, labor, and carbon emissions, the panel helps builders create resilient homes that withstand extreme events while conserving resources.

“Our Firepoint sheathing exemplifies the kind of innovation that moves the building industry forward,” said Bradley Bolduc, Chief Executive Officer of Arclin. “This recognition reflects the role Firepoint plays in advancing resilience, safety, and sustainability, helping builders construct homes that protect lives, preserve resources, and offer design flexibility.”

Firepoint integrates intumescent technology into the panel, protecting walls from fire without compromising structural performance, strength, or design. The new 10-foot panel elevates this performance by responding directly to builder demand for faster installation, fewer seams, and greater efficiency in real-world construction.

“One of the biggest advantages of Firepoint is how seamlessly it fits into existing building practices,” said Teong Tan, Chief Research Officer at Arclin. “By aligning with standard OSB applications and expanding panel sizes, we’re making it easier for builders to adopt higher-performing materials at scale.”

For more information about Firepoint, visit https://firepoint.arclin.com/.

*Per ASTM E-119 in a third-party accredited lab.

**Meets California WUI (Chapter 7A) requirements.

About Arclin
Arclin is a leading materials science company and manufacturer of polymer technologies, engineered products, and specialized materials for construction, agriculture, transportation infrastructure, weather & fire protection, pharmaceutical, nutrition, electronics, design, aerospace, defense, personal protection, and other industries. Headquartered in Alpharetta, Georgia, Arclin has offices and manufacturing facilities across North & South America, Europe, and Asia and serves customers worldwide. For more information, visit www.arclin.com.

Cision View original content to download multimedia:https://www.prnewswire.com/news-releases/arclin-firepoint-named-a-green-builder-media-2026-sustainable-product-of-the-year-302746366.html

SOURCE Arclin

ALPHARETTA, Ga., April 20, 2026 /PRNewswire/ — Arclin’s Firepoint® fire‑resistant sheathing has been recognized as a Sustainable Product of the Year by Green Builder Media for the second consecutive year, honoring the product’s innovation, real‑world performance, and measurable contributions to safer, more sustainable homes.

Firepoint is a proprietary sheathing that provides up to 90 minutes of fire resistance when used in wall assemblies, exceeding code by 50 percent or more to slow fire spread and give people critical time to protect lives and property.* New in 2026, Firepoint now supports larger panel sizes, including 4×9 and 4×10, making it ideal for tall-wall and multifamily construction.

Firepoint’s design simplifies assemblies, reducing the need for extra layers or fire treatments, contributing to a more sustainable and efficient building process. Suitable for construction in wildland urban interface (WUI) zones**, Firepoint advances sustainability by supporting longer-lasting builds and reducing the environmental impact of wildfire reconstruction. By reducing materials, labor, and carbon emissions, the panel helps builders create resilient homes that withstand extreme events while conserving resources.

“Our Firepoint sheathing exemplifies the kind of innovation that moves the building industry forward,” said Bradley Bolduc, Chief Executive Officer of Arclin. “This recognition reflects the role Firepoint plays in advancing resilience, safety, and sustainability, helping builders construct homes that protect lives, preserve resources, and offer design flexibility.”

Firepoint integrates intumescent technology into the panel, protecting walls from fire without compromising structural performance, strength, or design. The new 10-foot panel elevates this performance by responding directly to builder demand for faster installation, fewer seams, and greater efficiency in real-world construction.

“One of the biggest advantages of Firepoint is how seamlessly it fits into existing building practices,” said Teong Tan, Chief Research Officer at Arclin. “By aligning with standard OSB applications and expanding panel sizes, we’re making it easier for builders to adopt higher-performing materials at scale.”

For more information about Firepoint, visit https://firepoint.arclin.com/.

*Per ASTM E-119 in a third-party accredited lab.

**Meets California WUI (Chapter 7A) requirements.

About Arclin
Arclin is a leading materials science company and manufacturer of polymer technologies, engineered products, and specialized materials for construction, agriculture, transportation infrastructure, weather & fire protection, pharmaceutical, nutrition, electronics, design, aerospace, defense, personal protection, and other industries. Headquartered in Alpharetta, Georgia, Arclin has offices and manufacturing facilities across North & South America, Europe, and Asia and serves customers worldwide. For more information, visit www.arclin.com.

Cision View original content to download multimedia:https://www.prnewswire.com/news-releases/arclin-firepoint-named-a-green-builder-media-2026-sustainable-product-of-the-year-302746366.html

SOURCE Arclin

ALPHARETTA, Ga., April 20, 2026 /PRNewswire/ — Arclin’s Firepoint® fire‑resistant sheathing has been recognized as a Sustainable Product of the Year by Green Builder Media for the second consecutive year, honoring the product’s innovation, real‑world performance, and measurable contributions to safer, more sustainable homes.

Firepoint is a proprietary sheathing that provides up to 90 minutes of fire resistance when used in wall assemblies, exceeding code by 50 percent or more to slow fire spread and give people critical time to protect lives and property.* New in 2026, Firepoint now supports larger panel sizes, including 4×9 and 4×10, making it ideal for tall-wall and multifamily construction.

Firepoint’s design simplifies assemblies, reducing the need for extra layers or fire treatments, contributing to a more sustainable and efficient building process. Suitable for construction in wildland urban interface (WUI) zones**, Firepoint advances sustainability by supporting longer-lasting builds and reducing the environmental impact of wildfire reconstruction. By reducing materials, labor, and carbon emissions, the panel helps builders create resilient homes that withstand extreme events while conserving resources.

“Our Firepoint sheathing exemplifies the kind of innovation that moves the building industry forward,” said Bradley Bolduc, Chief Executive Officer of Arclin. “This recognition reflects the role Firepoint plays in advancing resilience, safety, and sustainability, helping builders construct homes that protect lives, preserve resources, and offer design flexibility.”

Firepoint integrates intumescent technology into the panel, protecting walls from fire without compromising structural performance, strength, or design. The new 10-foot panel elevates this performance by responding directly to builder demand for faster installation, fewer seams, and greater efficiency in real-world construction.

“One of the biggest advantages of Firepoint is how seamlessly it fits into existing building practices,” said Teong Tan, Chief Research Officer at Arclin. “By aligning with standard OSB applications and expanding panel sizes, we’re making it easier for builders to adopt higher-performing materials at scale.”

For more information about Firepoint, visit https://firepoint.arclin.com/.

*Per ASTM E-119 in a third-party accredited lab.

**Meets California WUI (Chapter 7A) requirements.

About Arclin
Arclin is a leading materials science company and manufacturer of polymer technologies, engineered products, and specialized materials for construction, agriculture, transportation infrastructure, weather & fire protection, pharmaceutical, nutrition, electronics, design, aerospace, defense, personal protection, and other industries. Headquartered in Alpharetta, Georgia, Arclin has offices and manufacturing facilities across North & South America, Europe, and Asia and serves customers worldwide. For more information, visit www.arclin.com.

Cision View original content to download multimedia:https://www.prnewswire.com/news-releases/arclin-firepoint-named-a-green-builder-media-2026-sustainable-product-of-the-year-302746366.html

SOURCE Arclin