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Electrical Engineering Renewable Energy Energy Engineer

Lead, On-Site Battery & Solar Projects

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Octoenergy
Full Time position
Listed on 2026-07-19
Job specializations:
  • Energy/Power Generation
    Electrical Engineering, Renewable Energy, Energy Engineer
  • Engineering
    Electrical Engineering, Energy Engineer
Salary/Wage Range or Industry Benchmark: 75000 - 110000 GBP Yearly GBP 75000.00 110000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

Octopus Energy for Business (OEB) is a rapidly scaling energy supplier with more than 130k business customers. We’ve pioneered PPA-backed supply for mid-market businesses through Electric Match, led the way for SME smart tariffs with Shape Shifters and are the established market leader for enabling EV public charging through energy supply and services.

We are committed to helping business customers meet their energy needs through technology, renewables and flexibility. To do this to the fullest extent, we are now expanding our capabilities beyond energy supply and smart tariffs. To help businesses solve for escalating energy bills and long grid connection queues, we will also install and optimise low carbon tech - primarily batteries - at their sites.

While there is potential to scale this activity both up and down to larger and smaller customers, projects developed by this role will initially focus on businesses in the mid-market segment (100kW - 1MW).

We will integrate batteries with solar where appropriate, but the anchoring technology is the battery itself - with the potential to create significant bill savings through flexibility. This role will lead project development for battery projects at business customer sites.

This role is London based and requires regular travel to customer project sites.

  • Develop on-site battery projects (co-located with solar if helpful to project and customer economics) at business sites to save customers money and reduce grid capacity constraints.
  • Conduct customer site visits for project development, technical evaluation and health & safety assurance.
  • Lead techno-economic modelling for on-site battery and solar projects.
  • Lead engagements with selected OEMs, EPCs and installers to specify optimally sized and priced battery and solar systems, as well as associated services for business customers.
  • Support commercial proposals and presentations to customers for behind-the-meter projects.
  • Support vendor management of preferred suppliers across OEMs, EPCs and installers for battery and solar systems, prioritising cost, quality, reliability and safety.
  • Work with commercial and legal teams to own and evolve contract templates for delivering on-site energy solutions, both for our contracts with customers and with suppliers.
  • The capacity to deal with ambiguity and to operate in an unstructured and fast-paced environment - this is not a corporate style job.
  • Hunger for professional accountability and a willingness to get your hands dirty to make things happen.
  • A passion for supporting businesses with energy solutions to save them money.
  • Professional experience and track record in distributed energy, especially battery technology at the >100kW scale.
  • Broad technical expertise across on-site project development, techno-economic modelling, electrical health and safety, technical site evaluations, equipment specifications and vendor management.
  • A strong technical grounding in low carbon technology, in particular battery systems, with solar expertise also being helpful.
  • Some familiarity and knowledge of flexibility markets and how optimised batteries can create customer value.

    • 💚 Why else you'll love it here 💚

    • 💰 Wondering what the salary for this role is?Just ask us! On a call with one of our recruiters it's something we always cover as we genuinely want to match your experience with the correct salary. The reason why we don't advertise is because we honestly have a degree of flexibility and would never want salary to be a reason why someone doesn't apply to Octopus - what's more important to us is finding the right octofit!

    • 🎉Octopus Energy Group is a
    unique culture
    . An organisation where people learn, decide, and build quicker. Where people work with autonomy, alongside a wide range of amazing co-owners, on projects that break new ground. We want your hard work to be rewarded with perks you actually care about! We were recently named the UK's top company to work for, and we ranked in the top ten in the Sunday Times Best Places to Work 2024.

    Our Group CEO, Greg has recordeda podcast about our culture and how we empower our people. We’ve also been placed in thetop 10 companies for senior…

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