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View Climatek Partner's top competitors like Ecofys US, Inc., Ecological Building Systems, and Energy Saving Trust.

Sierra Club
At the Sierra Club, we believe in the power of togetherness. Together, we remain committed to the fight for a healthy climate built on a foundation of environmental, racial, economic, and gender justice – a future where all people benefit from a healthy, thriving planet and a direct connection to nature. As the climate crisis and deeply entrenched systemic racism all fuel inequity, we will continue to fight for a bold, transformational agenda that recognizes the interconnectedness between our planet, our humanity, and our democracy. By recognizing that our destinies are tied, we continue to name that all things are fundamentally connected, and the overlap between ecology, race, gender, and representative government will move to either advance our collective humanity or to oppress it. Sierra Club is comprised of staff across the country and a network of local chapters that support our grassroots engagement. We are also proud to be a unionized employer, with two labor unions representing more than half of our employees. Please view www.sierraclub.org/careers/ for more information.
Oakland, California, US
Non profit
$114.8M Revenue
http://www.sierraclub.org
1.4K Employees
The Carbon Trust
Our mission is to accelerate the move to a decarbonised future. Climate pioneers for more than 20 years, we partner with leading businesses, governments and financial institutions to accelerate their route to Net Zero. We are your expert guide to turn your climate ambition into impact. To date, our global network of 400 experts has helped set over 200 science-based targets and guided more than 3,000 organisations and cities across five continents on their route to Net Zero.
London, GB
Private
$60.6M Revenue
http://www.carbontrust.com
380 Employees
Energy Saving Trust
Energy Saving Trust is an independent organisation dedicated to promoting energy efficiency, low carbon transport and sustainable energy use. We aim to address the climate emergency and deliver the wider benefits of clean energy as we transition to net zero. We empower householders to make better choices, deliver transformative programmes for governments and support businesses with strategy, research and assurance - enabling everyone to play their part in building a sustainable future. Climate change knows no boundaries and is impacting people across the world. Energy Saving Trust is working to address the climate emergency for everyone, whatever their age, race, gender or background. We recognise and value the qualities that make people unique and the variety of talent and experience that diversity brings. Read our community guidelines: https://energysavingtrust.org.uk/about-us/social-media-house-rules/ Office hours: Monday to Friday 9am - 5.30pm
UK
Private
$65.9M Revenue
https://energysavingtrust.org.uk
486 Employees
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
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