Supercool

Best known as one of the industry's most efficient Bitcoin miners, TeraWulf is expanding into high-performance computing (HPC) data centers for AI. Critics slam AI and Bitcoin mining for their massive energy consumption, but TeraWulf challenges that narrative. Its operations run on 91% zero-carbon energy, mostly hydropower, proving energy-hungry computing doesn’t have to come at a climate cost. Na...

Who is paying for the clean energy revolution? Today, we’re diving into the financial side of the transition—where the trillions of dollars needed to move civilization off fossil fuels and into a low-carbon future are coming from, and how these massive deals come together. Joining Josh is Britta Von Oesen, Partner and Managing Director at CRC-IB, the nation’s leading investment bank dedicated excl...

Every day, 27 million kids ride 500,000 school buses—the largest transit system in America. And yet, this 80-year-old relic is stuck in the past: buses are late, routes are inefficient, and parents have no clue where the bus is or when it’s coming. Ritu Narayan, founder and CEO of Zum, decided to fix it. All of it. With real-time tracking, smarter routes, and electric buses, Zum has modernized stu...

Budderfly is one of the fastest growing companies in America, with an unparalleled Energy-as-a-Service offering. For many small business owners, especially franchisees of the world's most recognizable fast food brands like Taco Bell, Pizza Hut, and KFC, Al Subbloie and team offer up to 40% energy savings and no-cost upgrades of HVAC, lighting, and refrigeration equipment. Solar panels? Why not? Bu...

In 2009, Amit Gupta, a rising executive at Carrier, the global HVAC company, discovered a neglected technology inside the company called Aeroseal. It used aerosol particles to seal air leaks in building envelopes and air ducts—offering a simple yet powerful way to tackle a major problem: the 10% of global energy wasted due to leaks. Seeing its potential, Amit took a leap. In 2010, he left his corp...

In 2014, Gundersen Health, headquartered in La Crosse, Wisconsin, became the nation's first health system to eliminate fossil fuels, transitioning to 100% local renewable energy. Today, the high-growth Gundersen saves $5 million annually on energy, helping to control healthcare costs for its patient populations across 11 hospitals and 100+ clinics in Iowa, Wisconsin, Minnesota, and Michigan. Gunde...

Cities have nowhere to go but down to tap new sources of emissions-free, clean energy, harden assets against climate impacts, cut operational costs, and enhance urban life for their residents above. In this end-of-year episode, we're delving into the emergence of the underground climate economy, a Supercool trend we've identified after completing our first 20 episodes since launching in July. Whet...

Iowa generates enough wind power to meet 77% of its energy demand. That's great for combating climate change and financially beneficial for local farmers, towns, and the overall economy. Discover how Iowa rose to wind energy prominence. We're joined by Chaz Allen, former Mayor of Newton, Iowa, and current Executive Director of the Iowa Utility Association. We also speak with Kathy Law, a farmer tu...

Even the most innovative climate tech startups face marketing challenges. To gain traction or raise capital, they must generate brand awareness, educate the market, and build trust with prospective customers in a race against time before their funds run out. Companies that go bold in their climate communications stand a stronger chance of standing out in a "sea of same." That's the advice of this...

Ned Tozun co-founded d.light in 2007 with a mission to provide safe, affordable, and sustainable energy solutions for all. Seventeen years later, d.light's solar products have improved the lives of over 180 million people across 72 countries, with major operations in India, Kenya, Nigeria, Tanzania, and Uganda. The company employs 1,200 people and tens of thousands of local sales agents to bring i...

What moves people to ditch their cars and use their own feet? The key, says Jeff Speck, is that the walk must be as good as a drive. Jeff wrote the book on walkability—literally. Walkable City: How Downtown Can Save America One Step at a Time is the best-selling city-planning title of the 21st century. On today’s show, Jeff presents the playbook for creating walkable neighborhoods and cities, the...

In just two years since the Inflation Reduction Act (IRA) became U.S. law, the clean energy economy has been on a tear: $380B in new investment by companies; 900 new and expanded manufacturing facilities; and clean energy jobs growing at twice the rate of conventional jobs (4.2% vs 2%). Joining Josh to discuss these supercool accomplishments is David Turk, Deputy Secretary of the U.S. Department o...

Bitcoin mining faces frequent criticism in climate circles for its voracious energy appetite. But what if that narrative is over-generalized or maybe even entirely misses the mark? Joining Josh is Matthew Schultz, the founding CEO and current Executive Chairman of CleanSpark, a publicly traded Bitcoin miner with nearly 5% market share of new Bitcoin. CleanSpark operates predominantly using nuclear...

Kathy Hannun began incubating within Google X, the startup that would become Dandelion, a home geothermal energy company that today is the largest and fastest-growing in America. With several thousand residential installations completed in the Northeast, Dandelion is scaling nationally, partnering with installers and homebuilding giants like Lennar. Carbon-free geothermal energy is about to become...

While saving the Amazon grabs headlines, the trees right outside your front door shape your life in important ways. The more trees in your city neighborhood, the less crime, the fewer prescriptions for antidepressants, and the lower rates of asthma, childhood leukemia, and other immune diseases. These leafy giants affect everything from healthier newborns to longer life expectancy to higher proper...

Garbage trucks have gone missing in cities around the world. In neighborhoods from London to Barcelona and Singapore to Seoul, their unmistakable sight, sound, and smell are notably absent. The reason? Trash has gone underground, whisked away through a hidden network of pneumatic pipes—no trucks, no noise, no stench. If this sounds like the future, it is. But this particular slice was invented in...

Marshall Gobuty didn’t set out to build green when he became a real estate developer in his 50s. After a successful career in the clothing and furnishings industries, he sought to establish credibility in Florida’s competitive housing market. LEED certification presented the perfect opportunity. But Gobuty didn’t stop at meeting the minimum. His first project, Mirabella, became the first LEED Plat...

Fresh out of grad school, Kyle Wagenschutz was hired by the mayor of Memphis, TN, and given a daunting task: prevent the city from being named the "Worst Place to Bicycle in America" by Bicycling Magazine for a third year in a row. Kyle succeeded. Five years (and over a hundred miles of bike lanes) later, Memphis was recognized as a national leader, and Kyle was honored at the White House as a Cha...

Stanford professor Mark Jacobson wasn’t just dreaming of a world powered by renewable energy back in 2009—he was doing the math and architecting the plan. Jacobson teamed up with actor-turned-eco-hero Mark Ruffalo to co-found The Solutions Project with a mission to transition the world to 100% renewables by 2035.  As Jacobson's vision took root, states and cities began making 100% renewable pledge...

At Holabird Academy and Graceland Park, two net-zero energy Baltimore public schools, the future is already in session. Solar panels line the roofs, geothermal wells lie below the ballfields, and energy-efficient features keep these buildings running entirely on renewable power. But while these schools are a win for the planet, the real story is how they’re transforming the lives of everyone who s...

Cities are in a race against time to cut carbon, and the stakes are high. Responsible for 70% of global emissions, urban centers around the world are stepping up. At the heart of this global movement are mayors. Through C40 Cities—a network of nearly 100 leading cities—mayors are sharing, learning, and spreading the most effective climate solutions worldwide. David Miller served as Mayor of Toront...

Across America, a quiet revolution is unfolding—autonomous electric mowers are gliding silently across parks, ballfields, and backyards. These zero-emission machines couldn’t have arrived at a better time. Lawn care and gardening account for 4-5% of the U.S.'s total greenhouse gas emissions—a staggering number for a single industry. Adam Sloan is the founder and CEO of Greener, which provides clim...

Geothermal energy's roots in America run deep. Before the Wright Brothers took flight and the first Ford Model-T rolled off the assembly line, residents of Boise, Idaho, were heating their homes with geothermal energy. Today, Boise’s system heats over 100 buildings and six million square feet in the downtown core and even pulls off some supercool feats—like melting snow off sidewalks in the winter...

After a determined two-year campaign, thirty Denver Public Schools (DPS) students convinced the School Board of Education to approve a climate policy to make the school district a national leader in climate action. LeeAnn Kittle, Executive Director of Sustainability for Denver Public Schools, now leads the charge, overseeing the Climate Action Plan, which already saves the district $5 million annu...

Though over a hundred solar companies fled the state when its utility, Rocky Mountain Power, cut solar incentives four years ago, Utah is one of the fastest-growing states for residential solar—but with a twist. Many new customers also purchase grid-connected batteries. While others left, ES Solar, a local solar company, went all-in on solar-plus-storage. That move paid off; the company has instal...