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Welcome to 21 Degrees. A company built on the legacy of a series of trusted companies and brands we have acquired since 2020, such as Green Building Store and Go Eco Renewables, along with a further 14 acquisitions. Together we offer even greater innovation and expertise through the combined knowledge of these businesses in sustainable building and energy solutions.

At 21 Degrees, we believe the built environment should deliver optimal efficiency, health, and comfort. That’s why we empower homeowners, architects, and businesses with the knowledge and technology to harness the sustainable energy from every building and help safeguard the planet.

For over three decades, we’ve been at the forefront of sustainable, low-energy building, becoming one of the leaders in introducing Passivhaus to the UK. Today, as 21Degrees, we’re proud to lead the energy revolution, helping our customers to harness their own sustainable energy to improve efficiency, comfort and the planet.

Efficient Building Solutions was set up in 2020 to bring together complementary services and products with the combined purpose of radically improving the UK’s buildings through our thinking, leadership and actions. They did this by bringing together respected and reputable companies driven by a commitment to challenge outdated building methodologies and energy systems to champion sustainable living. Through our progressive merger and acquisition strategy we aim to set a new standard for energy performance, environmental stewardship, and human wellbeing. 

Our history

Companies Go Eco Renewables and Bright Green Renewables were acquired in 2020 and branded together as Green Building Renewables in 2021. Green Building Renewables went on to acquire Eco East Anglia, Unique, Inspired, Steve Cross Plumbing and Heating, MYelectrical, Eco Energy Power LTD, Solar Voltaics, JEM Energy, Doré Woodman, and JL Phillips in subsequent years. Sister company Green Building Store was rebranded to 21 Degrees in March 2024, and has now merged with Green Building Renewables to bring all 14 prior subsidiaries under the 21 Degrees brand.

Please explore our website to learn more about 21 Degrees and our mission to change the way you think about energy.