Battery Energy Storage Systems (BESS): From Cell to Grid

Engineering, Delivery & Business Case

Course description

This training follows a battery energy storage system across its full value chain — from the electrochemical cell, through modules, racks, the Battery Management System (BMS), Power Conversion System (PCS) and Energy Management System (EMS, up to grid connection and system-level operation. Learners build a clear mental model of how a Battery Energy Storage System (BESS) works end to end, then explore the engineering decisions that matter at each stage.

The course treats a BESS as a project: site and grid-connection requirements, procurement, commissioning, and safely energising and operating a system. It also covers the business case — revenue stacking across market services alongside CAPEX and OPEX drivers. Germany is used as a case study to ground standards, grid-connection rules and real lessons learned in practice.

Simulations are used to make invisible processes tangible: electrochemical reactions inside the cell, battery behaviour under abnormal events such as thermal runaway, and PCS control loops and grid response under fault conditions.

Participants will learn:

✓ How a BESS works end to end — from the electrochemical cell through modules, racks and enclosures
✓ How to compare Li-ion, LFP and emerging chemistries for a given application
✓ How to assess lifecycle performance and degradation behaviour
✓ What the BMS, PCS and EMS each do, and how they interact
✓ How to evaluate suitability for grid services: frequency regulation, peak shaving and backup
✓ What grid connection and compliance require in practice
✓ How a BESS project runs: site requirements, procurement, commissioning and safe energisation
✓ How the business case is built — revenue stacking alongside CAPEX and OPEX drivers

Target group

  • Engineers and technical professionals
  • Project developers and EPC / engineering teams
  • Utilities and grid or network operators
  • Anyone considering EV adoption or home / behind-the-meter storage
  • Anyone passionate about the energy transition who wants a coherent end-to-end understanding of battery storage
  • The training bridges engineering, project delivery and commercial functions, so it suits both specialists and motivated newcomers.

What you need

Language: English, B1 or above
Education: Secondary school qualification
Prior knowledge: No prior experience with battery energy storage is required. A basic understanding of how electricity is generated, transported and consumed makes the course easier to follow, but is not a condition. Participants should have solid computer skills, be able to join video conferences confidently, and be willing to work with online tools and self-study material between sessions.

Estimated Workload: 30 hours / 2+ ECTS for Advanced level

Format: Online 

Time: 18:00–19:30 CET

Certificate: Certificate of participation

Preis: 0 €

Sprache: English

Current dates:
All sessions 18:00–19:30 CET

  • Mon, 16 & Thu, 19 November 2026
  • Mon, 23 & Thu, 26 November 2026
  • Mon, 30 November 2026
  • Thu, 3 December 2026 — Q&A

Career path: Career starters and career changers entering the energy sector

  • BESS engineer
  • Project / EPC engineer
  • Grid & network operations

Schedule & Learning objectives

Date: 16.11.2026 
Time:  6 – 7:30 pm

✅ Learning objectives

  • Understand the state of today’s power system and the pressures acting on it — and why we can no longer grow the grid the way we always have. 
  • Understand the generation mix behind the grid, and compare today’s mix with the mix of a future grid dominated by inverter-based renewables. 
  • Understand what grid flexibility is, where it used to come from, and the role energy storage plays in closing the flexibility gap that opens as that mix changes. 
  • Understand the different services a BESS can provide to the grid — frequency, voltage, energy shifting, oscillation damping, contingency reserve, black start — and what each one is worth. Understand the types of stationary battery systems and where each one sits — utility-scale plants at the transmission and distribution level, commercial and industrial (C&I) systems behind the meter, and residential home storage — and how scale, connection point and business case differ between them.

Date: 19.11.2026 
Time: 6 – 7:30 pm

✅ Learning objectives

  • Understand the harmony triangle — how engineering, project management and project finance have to stay in balance for a storage project to work. 
  • Understand the basics of a lithium-ion cell — how charge moves by intercalation, and why this cell became the revolution it did. 
  • Understand the different lithium-ion chemistries — NMC, LFP and their relatives — and the main features that set them apart on energy density, cost, safety and OCV shape. 
  • Understand the fundamentals of the BMS — its core functions, and the particular challenges LFP cells pose for SoC estimation and balancing. 

Date: 23.11.2026 
Time: 6 – 7:30 pm

✅ Learning objectives

  • Understand what makes a low-inertia system different — where inertia used to come from, what changes when it disappears, and why grid-following and grid-forming behave differently during a frequency event. 
  • Understand the basics of the inverter — how switching writes an AC sine wave from the DC bus to the grid terminal, and how this differs fundamentally from a thermal power plant. 
  • Understand the main characteristics of inverters and their types — four-quadrant operation, reactive power capability, de-rating curves, response time, fault behaviour and efficiency. 
  • Understand the basics of the EMS — where it sits in the control hierarchy and what role it plays in operating the plant. 
  • Understand the main ideas of revenue stacking — how markets are combined, and how the revenue stack, Vermarkter and fallback behaviour interact in the German market. 

Date: 26.11.2026 
Time: 6 – 7:30 pm

✅ Learning objectives

  • Understand degradation as a chemical phenomenon — what actually changes inside the cell through SEI growth, lithium plating and particle cracking, and how calendar and cycle ageing differ. 
  • Understand how to engineer against degradation — managing temperature, SoC window, C-rate and depth of discharge, and reading a knee point off an ageing curve.
  • Understand how degradation shapes the whole BESS project — sizing and augmentation strategy, warranty terms and the business case behind them. 
  • Understand the fundamentals of thermal runaway in lithium-ion cells — how it initiates and propagates from cell to module to container. 
  • Understand the fundamentals of fire suppression systems (FSS) for BESS — detection, suppression and deflagration venting, and how a permitting concept is built on them, informed by McMicken, Victorian Big Battery and Moss Landing. 
  • Understand how to recognise a faulty or unsafe installation before it fails — the warning signs of cell and module defects, wiring and connection faults such as loose terminals, undersized cabling and poor grounding, and BMS faults including sensor drift, communication loss and failed balancing.

Date: 30.11.2026 
Time: 6 – 7:30 pm

✅ Learning objectives

  • Understand the whole BESS system in one overview — how cell, container, BMS, PCS, EMS, grid connection and safety concept fit together as a single plant. 
  • Revisit project management and project finance — how a BESS project is developed, delivered and funded, and where the two disciplines meet the engineering.
  • Understand the main challenges of BESS contracts — EPC, O&M, warranty and offtake — and where risk, liability and performance guarantees are allocated. 
  • Understand the idea of economical operation and degradation-aware dispatch — trading revenue today against cell life tomorrow. 
  • Understand the revenue stack of a BESS project in depth — which markets it can serve, how they combine, and what determines whether the project actually makes money. 

Date: 03.12.2026 
Time: 6 – 7:30 pm

  • Review the lecture series and additional fundamental knowledge from the Learning Management System. 
  • Have the opportunity to ask any open questions.
  • Gain access to the end of course quiz, which allows you to acquire your certificate of completion.

Your trainer

 

Dr.-Ing. Ahmed Elbaz

FOUNDER, BESS 2030 CONSULTANCY 

Dr.-Ing. Ahmed Elbaz has been teaching energy storage at HfT Stuttgart while delivering it in practice: 17 years in infrastructure projects and more than 8 GWh of BESS commissioned. As Founder of BESS 2030 Consultancy, he advises developers, investors and contractors across the full life of a storage project, bringing a combination that is rarely found in one person — engineering, project management and project finance connected into one triangle, where technical decisions, contracts and financial models are thought through together rather than side by side. 

Ex- SMA and previously Head of BESS Execution at Enpal; doctorate (Dr.-Ing.) from the University of Kassel. 

Funded by the European Union under Grant Agreement No. 101186624. Views and opinions expressed are those of the author(s) only and do not necessarily reflect those of the European Union or the EACEA.

 

Curious?

Register now, free of charge — our team looks forward to meeting you and answering your questions. Write to Olga if anything is unclear.