Power with a purpose
Our mission is to build the world’s most purpose-driven renewable energy business. We partner with leading brands to provide fully funded, clean energy solutions and deliver on energy and climate goals. Owned by funds managed by Octopus Energy Generation, we’re here to help businesses harness renewable energy.
Power to leading brands
Through our fully managed and funded solutions, we’re the trusted supplier of onsite renewable energy technologies for our clients, providing clean low-cost energy for global brands like Amazon and Lego, iconic manufacturers like Bentley and Aston Martin through to loved visitor attractions like The Eden Project and Chester Zoo.

Our people make all the difference
Our team are passionate about changing clients’ worlds for the better. Since Zestec was founded in 2017, we’ve been built on expert knowledge and experience in delivering commercial renewable projects that last for the long-term.
We know how serious the work we do is but we also like to have fun while we’re doing it. We love nothing more than understanding our clients and working in partnership with them to make a difference. Taking an open, no-nonsense and collaborative approach, forging strong partnerships and constantly looking at new and better ways of reaching our shared goals.
Our values
Integrity
We believe transparency and clarity is crucial to building trust and strong relationships. We are committed to open and honest communication in all our interactions, upholding an ethical approach to business. We deliver on our promises and ensure our actions align with our words.
Partnership
By working closely together, we foster strong, collaborative relationships within our team and with our partners and clients. We understand that being easy to work with is vital to our clients and partners and we provide clear frameworks for developing projects that ensure alignment, trust and shared success.
Sustainability
We are dedicated to creating a positive environmental impact by developing innovative renewable energy solutions that support the energy transition. Our goal is to do good in the world by building a socially responsible business that is resilient in an ever-changing market landscape.