Celsius Energy is a leading sustainable geothermal heating and cooling solution provider for commercial buildings and campus-scale applications.  Operating across the United States, Europe, and Asia, our company offers vertical and pyramid (inclined) geothermal solutions that not only diminish installation footprint, but also enable real estate preservation, flexible construction adaptability, and deliver substantial operational cost savings and energy efficiencies, even in challenging dense urban environments where traditional geothermal systems are infeasible.

As a new energy business of SLB (formerly Schlumberger), a leading global provider of the energy technology sector for nearly a century, Celsius Energy brings unparalleled expertise in drilling, subsurface characterization, and intelligent systems to our proven geothermal technology and processes.  Our company’s groundbreaking inclined drilling technology has garnered recognition by the United Nations as one of the 50 most promising solutions for the future of climate worldwide.  Celsius Energy has earned the prestigious “Solar Impulse Efficient Solution” label - selected from among low-carbon solutions by the Sekoya and IFPEB/Carbon 4 platforms, along with the esteemed SEAL Sustainable Service Award.  In 2024, Celsius Energy was honored with the BloomberNEF Pioneers Award, acknowledging our game-changing innovation and its potential to accelerate global decarbonization and halt climate change.

Our mission is climate: connect buildings to the earth to (re)connect the company to climate challenges, making low-carbon buildings at scale.

Our solution is a highly optimized ground-source heat pump system for both new buildings and renovation projects with applicability even in dense urban areas.  The system consists of:

1. A scientifically dimensioned geothermal borehole arrangement, driven by the thermal capacity of drilled test well(s) and the energy demands of the building, ensuring the right-sizing of the geothermal system.
2. A pyramid-shaped geothermal heat exchanger equipped with closed U loops, strategically engineered to minimize surface footprint and maximize thermal exploitation of the underground. 
3. An advanced digital control and monitoring system, engineered to minimize electricity consumption and optimize the performance of geothermal resources to ensure long-term system and ground sustainability in real time. 

Today, Celsius Energy is a dedicated and multidisciplinary team of experts, deeply intertwined with a vibrant ecosystem comprising companies, private and public stakeholders, engineers, researchers, and valued partners. Our commitment lies in fostering collaborative efforts that leverage our expertise and unite trades essential for the seamless deployment of turnkey geothermal solutions aligned with our core values and aspirations.

Founded in Clamart, France in 2019 Celsius Energy expanded to the United States in 2022.  Our U.S. headquarter is based in Cambridge, Massachusetts – focused on connecting buildings to the Earth throughout New England and the Northeast region of the United States.