Tackling 8% of Global Emissions: Making Iron Sustainable One Atom at a Time with Sandeep Nijhawan

In this special year-end episode of Hardware to Save a Planet, host Dylan Garrett explores how the rapid expansion of technology and the data centers to support it is accelerating some of the most important climate tech breakthroughs of the decade. Dylan revisits insights from eight innovators shaping the future of grid capacity, renewable power, long-duration storage, hydrogen backup systems, thermal batteries, and low-carbon construction materials. As AI’s energy demands surge, these technologies are proving essential for building resilient, sustainable infrastructure. This recap highlights the hardware, economics, and engineering advances that will define how AI and data centers can scale, without overwhelming the planet.

Recycling human waste rarely makes the sustainability spotlight, yet our current recycling system flushes away 32 billion gallons of fresh water and the nutrients that could replace a quarter of global fertiliser demand. In this episode of Hardware to Save a Planet, host Dylan Garrett speaks with Taylor Zehren, cofounder and CEO of Wasted, about how rethinking human waste can unlock a powerful circular sanitation economy. Zehren explains how urine-diversion technology turns porta-potties into nutrient-recovery hubs, reducing water waste, cutting emissions, and replacing a significant share of global fertiliser demand. She highlights why separating waste at the source outperforms traditional wastewater treatment, how Wasted’s model transforms disposal costs into revenue, and why cultural shifts, starting with educating children, are essential for scaling sustainable, nature-inspired sanitation systems across homes, venues, and communities.

Decarbonizing maritime shipping is critical for a sustainable future, but conventional engines and fuel systems have long been a bottleneck. Anders Korsgaard and his team at Blue World Technologies are on track to change that. Join Dylan Garrett on this episode of Hardware to Save a Planet, as he welcomes Anders Korsgaard, Founder and CEO of Blue World Technologies, to discuss how methanol fuel cells are transforming the industry. Drawing on decades of expertise in fuel cell systems, Anders explains how high-temperature PEM fuel cells convert liquid methanol into clean electricity with 20–25% improved efficiency over conventional engines. He shares why methanol is emerging as the preferred green fuel for shipping, how waste heat recycling boosts system performance, and the practical challenges of retrofitting versus new-build vessels. From forming strategic partnerships with industry leaders like Maersk to scaling hardware solutions for hard-to-abate sectors, Anders reveals what it takes to make sustainable maritime shipping both economically viable and technologically feasible.

Updating home electrification is key to a sustainable future, but outdated electrical infrastructure has long been a bottleneck. Arch Rao and Span are out to change that. Join Dylan Garrett on this episode of Hardware to Save a Planet, as he welcomes Arch Rao, Founder and CEO of SPAN, to discuss how his company is reinventing the humble electrical panel for a modern, electrified home. Drawing on his experience at Tesla Energy, Arch explains how SPAN’s smart panel enables homeowners to monitor, control, and optimize their energy use, without costly service upgrades. He shares how SPAN is helping accelerate the adoption of solar, EVs, and batteries through intelligent load management and design aesthetics. From forging utility partnerships to scaling hardware manufacturing, Arch reveals what it takes to build climate-impactful hardware and unlock the next era of smart home energy systems.

Wave energy has the potential to provide up to 66% of U.S. electricity needs, but offshore systems have long struggled with cost, durability, and scalability. All that is about to change. In this episode of Hardware to Save a Planet, host Dylan Garrett welcomes Inna Braverman, founder and CEO of Eco Wave Power, to explore how her company is making wave energy commercially viable through an innovative onshore approach. Inna shares her personal journey from surviving the Chernobyl disaster as an infant to becoming a pioneer in clean energy at just 24. She explains why building on existing coastal infrastructure reduces costs and risks, how wave energy’s 90% availability rate complements solar and wind, and why focusing on achievable early markets is key to scaling climate tech.

Solar panel costs have dropped 90% in the past two decades, transforming clean energy from subsidy-dependent to economically viable on its own. If we care about scaling climate tech, we need to understand the role of economics, policy, and geography in shaping which solutions thrive. In this episode of Hardware to Save a Planet, host Dylan Garrett welcomes Pavel Molchanov, Investment Strategy Analyst at Raymond James, to share insights from his 20 years of studying energy markets. Pavel explains why economic viability is more important than technical breakthroughs, how different regions demand different solutions, and why climate adaptation will be essential. He offers a clear-eyed view of what it really takes for climate tech to achieve global impact.

The fashion industry produces 97 million tons of waste each year, and is responsible for 10% of global emissions and 20% of freshwater pollution. If we care about our planet, we need to take a closer look at sustainable fashion, and that is where Ravel enters the picture. In this episode of Hardware to Save a Planet, host Dylan Garrett welcomes Ravel cofounders Zahlen Titcomb and Kristen Albrecht to discuss their breakthrough textile recycling technology. By recycling polyester and blended fabrics with 59% less energy while matching the price of virgin materials, Ravel is proving that sustainability can scale. They share insights on market-driven solutions, industry adoption, and transforming one of the world’s most polluting industries.

In this episode of Hardware to Save a Planet, host Dylan Garrett welcomes Ted McKlveen, co-founder and CEO of Verne, to discuss hydrogen’s rising role in clean power generation. They dive into Verne’s cryo-compressed hydrogen storage technology and its potential to replace diesel generators, especially in data centers and remote areas. Ted explains why hydrogen may be a practical and scalable solution for supporting the electrical grid and decarbonizing hard-to-abate sectors, like trucking, by offering both economic and environmental benefits in the race toward a cleaner energy future.

In this episode of Hardware to Save a Planet, host Dylan Garrett welcomes William Foiles, CEO of Project Canary, to discuss how advanced sensors and AI software are transforming methane emissions detection. They explore the evolution from custom hardware to integrated data platforms, the urgency of addressing methane's climate impact, and pragmatic strategies for change. William shares how precise, real-time monitoring empowers industrial operators to reduce emissions, proving that actionable data is a powerful tool in the climate tech arsenal.

In this episode of Hardware to Save a Planet, host Dylan Garrett sits down with Sandeep Nijhawan, CEO and Co-founder of Electra, to explore how his team is reinventing steel production. Their low-temperature electrowinning process converts iron ore into steel at low temperatures, utilizing renewable electricity to reduce emissions in one of the planet’s most polluting industries. From garage startup to industry disruptor, Sandeep shares Electra’s journey, its potential to reshape global manufacturing, and why industrial decarbonization is crucial for climate solutions.