Project Manager (Solar O&M)

Responsible Us; Kings Langley; Remote; GBP 52,000 - 76,000; Full time

Job summary

Renewable Energy Systems in Kings Langley, United Kingdom, is seeking a mid-level Project Manager to lead the Solar O&M programme within the Asset Management and Operations division. You will coordinate with the O&M and Asset Managers to develop a project plan that meets safety, budget, and performance targets.

Responsibilities include managing subcontractors, maintaining project documentation, and driving continuous improvement across the portfolio.

Qualifications

• PM qualifications desirable and experience leading solar site projects.
• Electrical qualifications desirable for project execution.
• Health and safety qualifications desirable (IOSH/SMSTS).
• Experience delivering projects safely on time and within budget.

Responsibilities

• Manage a pipeline of project work through all stages from identification to warranty.
• Forecast long-term resource demand and address imbalances.
• Line-manage a Site Manager and coach on quality standards.
• Develop relationships with quality sub-contractors and oversee their works.
• Create and maintain a consolidated Project Plan: resources, materials, costs, timeframes.
• Execute the Plan per warranty, CDM, HSQE, and industry best practices.
• Produce testing, commissioning documents and CDM file updates.
• Handover to incumbent O&M contractor with defect procedures.

Skills

Project Management

Contract Management

Strong communication

Report-writing

Problem-solving

Attention to detail

Quality mindset

Education

Project management certifications (APM/PRINCE2/PMP)

Health & safety certifications (IOSH/SMSTS)

Electrical qualifications

Job description

Renewable Energy Systems · Kings Langley, United Kingdom

Full-time Renewable Energy & Cleantech Mid-level

Contract Full-time

Experience Mid-level

Closing Date October 22, 2026

Country United Kingdom

Sector Renewable Energy & Cleantech

Job Description

Description

Do you want to work to make Power for Good?

We're the world's largest independent renewable energy company, guided by a simple yet powerful vision to create a future where everyone has access to affordable, zero carbon energy.

We know that achieving our ambitions would be impossible without our people. Because we're tackling some of the world's toughest problems, we need the very best people to help us. They're our most important asset so that's why we continually invest in them.

RES is a family with a diverse workforce, and we are dedicated to the personal and professional growth of our people, no matter what stage of their careers they're at. We can promise you rewarding work which makes a real impact, the chance to learn from inspiring colleagues from across a growing, global network and opportunities to grow personally and professionally.

Our competitive package offers a wide range of benefits and rewards.

The Position

The purpose of this role is to provide Project Management for the Solar O&M service within the Asset Management and Operations department to plan and execute a programme of upgrade, repair and remediation work on a portfolio of operational solar farms. The Project Manager will require close coordination with the O&M Operations Manager and Asset Manager for each solar plant. The project management plan will need to be developed in coordination with the relevant technical, procurement and HSQE specialists. The relevant owner approvals need to be obtained and adhered to. Reporting to the Senior O&M Project Manager you will ensure the projects achieve outstanding levels of safety and performance within the budget.

RES pride ourselves on our in-house training programme and this is provided. Employees who demonstrate an aptitude for career progression will be encouraged to broaden their experience to advanced levels.

Key Accountabilities

• Manage a pipeline of Project work through all stages including identification, quotation, approval, scheduling, planning, execution, technical completion, de-snagging, invoicing and warranty claims.
• Identify sources of new work from end of warranty inspections, maintenance inspection reports, serial defects and upgrade opportunities.
• Forecast the team’s long-term resource demand and supply. Action any imbalances.
• Line managing a Site Manager(s) providing coaching, motivation and continuous improvement of quality standards.
• Developing relationships with a selection of quality sub-contractors, managing their site works and providing timely feedback.
• Draw up a consolidated ongoing Project Plan to identify the resources, materials, plant, procedures, costs and timeframes.
• Execute the Project Plan in accordance with manufacturers and warranty requirements, contract terms, RES quality systems, HSQE standards (including CDM) and best industry practice.
• React to major plant component failures and execute the contingency plans developed by the O&M Planner.
• Accountability for the safety, profitability, quality and warranty claims in relation to the Project Plan.
• Delivery of the approved Project Plan
• Produce detailed specification and scope documents for tendering.
• Lead procurement activities.
• Award sub-contracts.
• Finalise programme of works.
• Organise the necessary enabling activities such as welfare, temporary tracks, power supplies and make the relevant CDM F10 notifications.
• Project manage sub-contracted works in accordance with the timescales and budget in the approved Project Plan.
• Regular status updates to Asset Manager and owner, and forecasting time and cost to completion.
• Ensure appropriate testing, commissioning and documentation is produced, including updating of CDM Health & Safety file.
• Organise handover to incumbent O&M contractor, including sub-contractor defect procedures.
• Coordinate with and provide relevant support to Wind and Battery Storage Project work.
• Identify opportunities to offer services to RES Construction.
• Identify resources within RES that can be deployed on the Project Plan (e.g. LAPs, SAPs).
• Support the development/improvement of the RES Quoting and Invoicing systems.
• Work with the Procurement/Contracts team to get sub-contract frameworks to reduce ad-hoc contracts.

Knowledge

• Knowledge of CDM.
• Lifting Procedures.
• Knowledge of the construction activities for solar farms.
• Knowledge of typical labour and materials costs in the solar industry.
• Knowledge of key HSE legislation and guidance pertaining to project activities.

Skills

• Attention to detail.
• A commitment to high quality.
• Positive, can-do attitude.
• Problem-solving.
• Report-writing.
• Project Management.
• Contract Management.
• Strong communication.

Experience

• Managing a programme of electrical and civil project work.
• Working on solar sites.
• Producing project plans and programmes.
• Managing sub-contractors.
• Delivering projects safely, on time and on budget.

Qualifications

• Project Management qualifications (APM, PRINCE2, PMP) desirable.
• Electrical qualifications desirable.
• Relevant Health and Safety qualifications such as IOSH or SMSTS.

At RES, we celebrate differences as we know it makes our company a great place to work. Encouraging applicants with different backgrounds, ideas and points of view, we create teams who work together to solve complex problems and design practical solutions for our clients. Our multiple perspectives come from many sources including the diverse ethnicity, culture, gender, nationality, age, sex, sexual orientation, gender identity and expression, disability, marital status, parental status, education, social background and life experience of our people.