We’re back with another data-center-deep-dive - this time with Jason Espeseth, Principal Electrical Engineer at Geronimo Power. Together with hosts Charlie Jelen and Dan Gentry, Jason breaks down the rise of “bring your own power” data centers and explains how pairing wind, batteries, and firming gas near-site can dramatically reduce interconnection timelines and avoid passing grid costs to ratepayers. We also talk gen-ties, utility feeds for stability, and how some data centers could be powered by up to 70% renewable energy.We also have:<ul><li>HVAC Headlines: <a href="https://electrek.co/2025/09/25/us-first-grid-scale-sodium-ion-battery-is-now-online/">The first U.S. sodium-ion grid battery and what it means</a> - could this reshape energy storage?</li><li>Hot or Not: Producer Elena asks Charlie and Dan: are microgrids the future of data centers? And are data centers the new monuments of our time?</li><li>Stat of the Day: <a href="https://www.voronoiapp.com/energy/Energy-Consumption-Per-Capita-by-Country-6427">Which country uses the most energy</a>? (Spoiler: not who you think.)</li></ul>We want your hot takes and questions! Email coolair.hottakes@trane.com, drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too!Cool Air, Hot Takes is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment.Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.

We’re back with another data-center-deep-dive - this time with Jason Espeseth, Principal Electrical Engineer at Geronimo Power. Together with hosts Charlie Jelen and Dan Gentry, Jason breaks down the rise of “bring your own power” data centers and explains how pairing wind, batteries, and firming gas near-site can dramatically reduce interconnection timelines and avoid passing grid costs to ratepayers. We also talk gen-ties, utility feeds for stability, and how some data centers could be powered by up to 70% renewable energy. We also have:HVAC Headlines: The first U.S. sodium-ion grid battery and what it means - could this reshape energy storage?Hot or Not: Producer Elena asks Charlie and Dan: are microgrids the future of data centers? And are data centers the new monuments of our time?Stat of the Day: Which country uses the most energy? (Spoiler: not who you think.)We want your hot takes and questions! Email coolair.hottakes@trane.com, drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too! Cool Air, Hot Takes is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment. Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.

We’re back with another data-center-deep-dive - this time with Jason Espeseth, Principal Electrical Engineer at Geronimo Power. Together with hosts Charlie Jelen and Dan Gentry, Jason breaks down the rise of “bring your own power” data centers and explains how pairing wind, batteries, and firming gas near-site can dramatically reduce interconnection timelines and avoid passing grid costs to ratepayers. We also talk gen-ties, utility feeds for stability, and how some data centers could be powered by up to 70% renewable energy.We also have:<ul><li>HVAC Headlines: <a href="https://electrek.co/2025/09/25/us-first-grid-scale-sodium-ion-battery-is-now-online/" rel="noopener noreferrer">The first U.S. sodium-ion grid battery and what it means</a> - could this reshape energy storage?</li><li>Hot or Not: Producer Elena asks Charlie and Dan: are microgrids the future of data centers? And are data centers the new monuments of our time?</li><li>Stat of the Day: <a href="https://www.voronoiapp.com/energy/Energy-Consumption-Per-Capita-by-Country-6427" rel="noopener noreferrer">Which country uses the most energy</a>? (Spoiler: not who you think.)</li></ul>We want your hot takes and questions! Email coolair.hottakes@trane.com, drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too!Cool Air, Hot Takes is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment.Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.

Bring Your Own Power: Fuelling Data Centers

Welcome to Cool Air, Hot Takes, the podcast that’s as smart as your building’s thermostat and twice as fun. Hosted by Charlie Jelen and Dan Gentry, two HVAC pros with over 30 years of combined experience and a lifetime of friendship, this show is your go-to for the latest in heating, ventilation, and air conditioning, industry news, and cutting-edge HVAC trends.

Charlie is a  building-systems expert passionate about solving complex problems, and Dan, an Applications Engineer with a knack for energy-efficient design and HVAC troubleshooting, bring their expertise (and plenty of hot takes) to every episode. Together, they dive into topics like the latest trends and systems redefining buildings and Industrial systems , and the future of AI in the industry, from smart thermostats to data centers. They’ll look at what’s up with all these tech companies buying nuclear power plants, and what does it mean for the future of climate control?

Expect in-depth interviews with industry-leading experts, practical tips for engineers and contractors, and funny stories from that job that went sideways. Whether you’re designing ductwork, conducting energy audits, or upgrading to sustainable HVAC systems, this podcast is built to keep you informed and entertained.

We want to hear from you! Email us CoolAir.HotTakes@trane.com with your questions, HVAC hacks, or the funniest thing that’s ever happened on a job, and we might feature it in an episode.

Follow Cool Air, Hot Takes from Trane wherever you get your podcasts, and join us as we tackle the big questions and the finer points of thermodynamics—one hot take at a time.

About Trane Commercial
Trane Commercial, part of Trane Technologies, is a leading provider of innovative climate control solutions and energy services tailored for commercial environments. The company focuses on optimizing indoor climates through advanced HVAC systems, building automation, and sustainability initiatives. With a commitment to decarbonization, Trane aims to reduce the carbon footprint of buildings while enhancing comfort and efficiency.
Learn more at: https://www.trane.com/commercial/north-america/

Meet the Hosts
Charlie Jelen has been working with HVAC systems for over 15 years, specializing in sustainable solutions. At Trane Commercial North America, he focuses on advancing cutting edge building and industrial systems. With a background in consulting and system engineering, Charlie is committed to delivering solutions for the hardest challenges facing clients today. 

Dan Gentry is an Applications Engineer. With expertise in chiller plants, heat recovery, and heat pump systems, he focuses on reliable and efficient system design.

Technology

Education

Welcome to Cool Air, Hot Takes, the podcast that’s as smart as your building’s thermostat and twice as fun. Hosted by Charlie Jelen and Dan Gentry, two HVAC pros with over 30 years of combined experience and a lifetime of friendship, this show is your go-to for the latest in heating, ventilation, and air conditioning, industry news, and cutting-edge HVAC trends. Charlie is a building-systems expert passionate about solving complex problems, and Dan, an Applications Engineer with a knack for energy-efficient design and HVAC troubleshooting, bring their expertise (and plenty of hot takes) to every episode. Together, they dive into topics like the latest trends and systems redefining buildings and Industrial systems , and the future of AI in the industry, from smart thermostats to data centers. They’ll look at what’s up with all these tech companies buying nuclear power plants, and what does it mean for the future of climate control? Expect in-depth interviews with industry-leading experts, practical tips for engineers and contractors, and funny stories from that job that went sideways. Whether you’re designing ductwork, conducting energy audits, or upgrading to sustainable HVAC systems, this podcast is built to keep you informed and entertained. We want to hear from you! Email us CoolAir.HotTakes@trane.com with your questions, HVAC hacks, or the funniest thing that’s ever happened on a job, and we might feature it in an episode. Follow Cool Air, Hot Takes from Trane wherever you get your podcasts, and join us as we tackle the big questions and the finer points of thermodynamics—one hot take at a time. About Trane Commercial Trane Commercial, part of Trane Technologies, is a leading provider of innovative climate control solutions and energy services tailored for commercial environments. The company focuses on optimizing indoor climates through advanced HVAC systems, building automation, and sustainability initiatives. With a commitment to decarbonization, Trane aims to reduce the carbon footprint of buildings while enhancing comfort and efficiency. Learn more at: https://www.trane.com/commercial/north-america/ Meet the Hosts Charlie Jelen has been working with HVAC systems for over 15 years, specializing in sustainable solutions. At Trane Commercial North America, he focuses on advancing cutting edge building and industrial systems. With a background in consulting and system engineering, Charlie is committed to delivering solutions for the hardest challenges facing clients today. Dan Gentry is an Applications Engineer. With expertise in chiller plants, heat recovery, and heat pump systems, he focuses on reliable and efficient system design.

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