BESS Associate – Battery Energy Storage Systems

Matrix Renewables; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading renewable energy company is seeking a Battery Energy Storage Systems (BESS) Associate to join their dynamic team in Greater London. The successful candidate will play a key role in BESS projects, contributing to technical, analytical, and operational activities. Responsibilities include developing battery system models, analyzing performance, and overseeing project execution. Ideal candidates will have a degree in a relevant field and 3-7 years of experience in battery storage systems. This role supports the energy transition in a hybrid work environment.

Benefits

Hybrid working environment

Inclusive work culture

Qualifications

• Minimum 3-7 years of professional experience in BESS design or commissioning.
• Proven ability to model BESS performance.
• Excellent communication skills.

Responsibilities

• Develop and maintain battery system models.
• Conduct performance simulations and techno-economic assessments.
• Oversee and coordinate system commissioning.

Skills

Battery energy storage systems

Simulation and data analytics tools

Stakeholder management

Problem-solving

Analytical mindset

Education

Degree in Electrical or Chemical Engineering, Energy Systems, Physics

Tools

Python

MATLAB

PowerFactory

PSCAD

DIgSILENT

Job description

BESS Associate Battery Energy Storage Systems

Location: United Kingdom (Hybrid / Flexible London Scotland or Spain)

About us

Matrix Renewables is a renewable energy platform that was founded by global alternative asset manager TPG through its impact investing platform in 2020. Headquartered in Madrid Matrix Renewables focuses on developing constructing and being long-term owners of renewable energy assets.

Matrix Renewables current portfolio is comprised of 15.7 GW (operational under construction ready to build under development) of renewable energy projects and storage across North America Europe and Latin America.

TPG impact-investing platform is a $27 billion impact investing platform focused on investing in and supporting the growth of world-class businesses that deliver positive and measurable social and environmental impact globally.

TPG is a leading global alternative asset investment firm with offices in Austin Beijing Boston Dallas Fort Worth Hong Kong Houston London Luxembourg Melbourne Moscow Mumbai New York San Francisco Seoul Singapore and Washington D.C. TPGs investment platforms span a wide range of asset classes including private equity growth equity impact investing infrastructure growth venture real estate secondaries and public equity.

The Role

At Matrix Renewables we are seeking an experienced Battery Energy Storage Systems (BESS) Associate to join our growing Energy Storage team. The successful candidate will play a key role in the technical analytical and operational aspects of BESS projects from early-stage feasibility and modelling to commissioning and performance optimization.

You will work closely with project developers engineers and financial analysts to evaluate and implement cutting‑edge battery storage and energy solutions supporting the energy transition to a low‑carbon energy system.

This is a great opportunity for someone looking to be involved in the full setup of a company work in an international fast‑paced environment and contribute to the renewable energy sector.

Key activities and responsibilities

Technical & Analytical

• Develop and maintain battery system models (electrical thermal and economic).
• Conduct performance simulations degradation analysis and techno‑economic assessments for utility‑scale projects.
• Evaluate different battery chemistries and configurations and advise on system design.
• Support grid connection studies dynamic modelling and integration with renewable generation assets (solar wind).
• Work with different and innovative technologies related to renewables and energy storage.

Project Execution & Commissioning

• Oversee and coordinate system commissioning and acceptance testing.
• Validate performance data and ensure systems meet functional and safety standards (G99 IEC IEEE).
• Liaise with EPC contractors OEMs and integrators to resolve technical issues during installation and start‑up.
• Support root‑cause analysis and optimization of operational BESS assets.

Commercial & Strategic

• Provide technical input into investment cases RFPs and due diligence processes.
• Work with commercial teams to optimize revenue streams across energy trading frequency response and capacity markets.
• Track technology trends and supplier developments in the global BESS sector.
• Contribute to internal knowledge sharing and best practices for BESS deployment.

Qualifications & Experience

Essential :

• Degree in Electrical or Chemical Engineering Energy Systems Physics or related field.
• 37 years of professional experience in battery energy storage systems (design modelling or commissioning).
• Proven ability to model and analyse BESS performance using simulation and data analytics tools.
• Experience with battery management systems (BMS) power conversion systems (PCS) and control strategies.
• Strong understanding of grid codes (G99 / G100) and connection processes.
• Excellent communication and stakeholder management skills.

Desirable :

• Knowledge in new technologies green hydrogen interconnections etc.
• Experience with SCADA systems EMS software or real‑time monitoring platforms.
• Knowledge of Python / MATLAB / PowerFactory / PSCAD / DIgSILENT.
• Familiarity with lifecycle cost analysis and asset performance benchmarking.

Key Competencies

• Analytical and detail‑oriented mindset.
• Strong problem‑solving and data interpretation skills.
• Proactive and collaborative working style.
• Ability to manage multiple projects and priorities.

Passion for clean energy and technological innovation.

If you are interested in applying please send a cover email and CV in English.

Matrix is committed to a fulfilling inclusive and non‑discriminatory working environment in which all individuals are treated as individuals with respect and dignity and are given opportunities to develop their careers and contribute to both the Companys and their own success. Furthermore Matrix is committed to ensuring a rigorous fair and non‑discriminatory selection and recruitment process and to treat all candidates who apply for a position in Matrix equally. We advocate for equal opportunity and do not discriminate against gender marital status religion age color race sexual orientation nationality or disability.

Employment Type: Employee

Vacancy: 1