Junior Asset Manager

We believe the ability to generate and store clean energy is essential to the creation of a sustainable energy system.

Location: London Area, United Kingdom (On-site)
Reports to: European Asset Management Director
Contract: Full-time

About Harmony Energy

Harmony Energy Limited is one of the UK and Europe’s leading developers and operators of utility‑scale battery energy storage projects, as well as being active in solar and onshore wind.

We see ourselves as a fundamental part of the transition to net zero across the UK and Europe, supporting the delivery of more secure, sustainable energy systems while bringing economic benefits at both local and national levels.

Rapid growth across the business means we are expanding our team – and now is your chance to join a multi‑award‑winning team helping to power a sustainable future. Having already built, developed, energised and operated over 800MW of projects to date across the UK and France, the company is now growing a multi‑gigawatt portfolio across Europe, which it plans to bring into construction and operations.

Harmony’s headquarters are in Knaresborough, North Yorkshire, with a further UK office in central London. We also have offices in France, Poland and Germany, and are active in Italy. This position will be based at our London office, with the flexibility to work remotely up to two days per week.

About the role

The Junior Asset Manager will support Harmony Energy’s European Asset Management Director, contributing to the performance management and governance of Harmony’s operational battery energy storage portfolio, from late‑stage construction handover into operations. You will develop a broader role within the operational team and work closely with our Head of Data and Intelligence and the Head of Sustainability to help develop and use Harmony’s asset monitoring and reporting platform, Harmonise, and to support portfolio‑level performance, data analytics and sustainability reporting.

This will include contributing to the development of dashboards, performance insights and ESG‑related metrics to improve how Harmony monitors, reports and optimises its assets. You will be working closely with companies such as Tesla, BP and Envision for both battery operations and maintenance (O&M) and optimisation. The list of equipment manufacturers and optimise rs will continue to grow in 2026/27. We are a growing business with big ambitions so the role can be tuned to meet the experience and ambition of the individual candidate.

The role would be of interest to those that want the challenge and responsibility of contributing towards the successes of a rapidly growing and ambitious company, with the support of an experienced professional team to develop existing skills and grow knowledge of asset management in the energy sector.

A genuine interest in renewable energy and sustainability is essential.

Key responsibilities – Asset Management

This is a broad and varied role with the opportunity to learn about the energy storage market and help maintain one of the UK’s largest battery portfolios. Key responsibilities include supporting the Asset Management team with the following:

• Monitoring Battery Availability/Warranty compliance and Revenue Performance identifying trends, underperformance and potential contractual or warranty risks.
• Acting as a coordination point between asset management, O&M, H&S, data and commercial stakeholders, ensuring issues are logged, tracked and escalated appropriately.
• Site visits for asset management inspections.
• Managing contractor O&M teams with performance monitoring of O&M contractors, including maintenance delivery, outage analysis, reporting quality and spares readiness.
• Working with the wider team to develop data strategies, dashboards and performance tracking tools using Harmonise and associated platforms.
• Assist with preparation of asset performance reports, O&M reports and internal dashboards.
• Keep abreast of UK and European market activity and regulatory policy.
• Supporting asset management budgeting activities, including commercial invoice reconciliation and tracking of O&M costs and performance against budget.
• Ensuring H&S Policy is…