Damianos Pantalos

Damien Pantalos

Energy Engineer
Passionate about sustainability, energy systems, net zero communities and green transportation.

About

I am passionate about sustainability, with a focus on energy systems, net zero communities and green transportation. I hold a Double MSc in Sustainable Energy Systems, data analytics and AI (Distinction), a certificate in Business Management from ESADE, and a Bachelor's in Energy Engineering (First Class Honours). My expertise spans energy storage optimisation, energy advisory, renewable energy integration, and data-driven energy solutions.

Experience

Energy Engineer – Freelance

07/2025 – Present
Brussels, Belgium
Research, development and validation of a multi-market optimisation model for utility-scale energy storage (BESS) across arbitrage and balancing markets. Integration of ML and deep reinforcement learning; enrichment with external data (weather and congestion indicators).

Energy Engineer

02/2025 – 06/2025
Elia Group, Brussels, Belgium
Development of a model to maximise revenue streams for utility-scale energy storage technologies (BESS) through participation in arbitrage and balancing markets using optimisation tools (Pyomo and Gurobi), and historical market data.

Energy Consultant

09/2024 – 05/2025
Six Senses Resort
Sustainable off-grid energy system for an island resort. Project aimed at 40% reduction of the resort's carbon emissions by 2030. Conducted comprehensive energy audit, expanded solar PV capacity, suggested innovative energy storage solutions, and analysed additional renewable sources.

Energy Analyst

09/2023 – 05/2024
Bristol City Leap / Vattenfall & KTH, Sweden
Co-led project aimed at decarbonising and expanding district heating networks in Bristol to promote the city's green transition. Led the modelling and environomic assessment of different technologies and options, deriving an optimal solution.

Operational & Maintenance Engineer

09/2021 – 08/2022
Synergia Technical & Investment Consultant SA, Athens, Greece
  • Operation, preventive, predictive and corrective maintenance of large-scale PV parks.
  • Monitoring of PV parks' performance, benchmarking and troubleshooting.
  • Drafting performance reports on operation and maintenance.
  • Contributed to the design of new combined solar-battery park projects.
  • Market research for battery technologies and products.

CEO & Design Engineer

12/2019 – 06/2021
IWES Project, European School of Brussels I
  • Served as CEO and Lead Designer for IWES, an AI-driven system designed to reduce food waste in school canteens by estimating wasted food mass.
  • Secured corporate sponsorship from Nvidia to support the project's technical development and AI integration.
  • Designed and prototyped the camera and the electronics infrastructure using CREO.

Projects

Multi-Market Optimisation for Energy Storage (Master Thesis)

2024 – 2025 +
UPC Barcelona & Elia Group – Master Thesis (Grade: 9/10)

Developed a multi-market optimization model for Battery Energy Storage Systems (BESS) operating in Belgium. The model enables storage operators to simultaneously access arbitrage markets (Day-Ahead and Imbalance) and ancillary service markets (FCR, aFRR).

Key methodology: Implemented in Pyomo using mixed-integer linear programming (MILP) with 15-minute resolution. The model captures operational constraints, round-trip efficiency losses, and battery degradation effects under multiple cycling scenarios. Market data from Elia (2024) was used to simulate real-world operation and validate the approach.

Key finding: Coordinated multi-market participation significantly improves BESS profitability over single-market strategies. Ancillary services provide stable baseline revenue while arbitrage exploits price volatility for additional gains.

Multi-Market BESS Optimization Framework
INPUTS 📡 Market Data Elia Prices 2024 Historical Data 📈 Arbitrage DAM, Imbalance Intraday 🎯 Ancillary FCR, aFRR Reserves 🔋 BESS Params Capacity, SoC Degradation ⚙️ MILP OPTIMIZER Pyomo + Gurobi | 15-min resolution OUTPUT 💰 Optimal Multi-Market Strategy & Revenue Allocation
All inputs (market prices, arbitrage/ancillary opportunities, BESS parameters) feed into the MILP optimizer, which computes the optimal capacity allocation across markets. The output is a coordinated multi-market bidding strategy that maximizes total revenue while respecting battery constraints and degradation limits.
MILP
Optimisation Method
Pyomo + Gurobi
Optimisation Tool
5
Markets Integrated
Python Pyomo Gurobi BESS Optimization Electricity Markets
View Abstract (PDF)

Predicting Electricity Consumption Using Neural Networks

10/2024 – 01/2025 +
UPC Barcelona – AI in the Energy Sector

Developed a Multilayer Perceptron (MLP) neural network to forecast electricity demand in Spain's peninsular region for the upcoming 2 hours, segmented into 30-minute intervals. The model was trained on real-world consumption data from February to August 2024.

Key methodology: Implemented a sliding window approach with a 25-hour lookback period (n=50) to capture temporal patterns. Integrated exogenous variables including temperature and wind speed to enhance predictive capabilities. The network architecture featured 3 hidden layers (128→64→32 neurons) with batch normalization and dropout regularization (0.2) to prevent overfitting.

Training & Validation Loss Over Epochs
0 0.01 0.02 0.03 0.04 0 100 200 300 500 Epochs Loss (MSE)
Training Loss
Validation Loss
The chart shows the model's learning progress over 500 training epochs. The training loss (blue) decreases steadily, indicating the model is learning patterns from the data. The validation loss (red) stabilizes after initial fluctuations, confirming good generalization without overfitting.
627
RMSE (MW)
456
MAE (MW)
25h
Lookback Window
Python TensorFlow/Keras MLP Neural Network Time Series Sliding Window

Data-Driven Optimisation of Heating/Cooling System

10/2024 – 01/2025 +
UPC Barcelona – Data-Driven Challenges for Energy Engineers

Developed a comprehensive methodology to optimize heat pump sizing for UK residential buildings using load disaggregation techniques on historical energy consumption data coupled with regional weather information.

Key methodology: Implemented Non-Intrusive Load Monitoring (NILM) using NILMTK toolkit and deep learning approaches to disaggregate heating/cooling loads from total household consumption. Integrated weather data correlation to identify temperature-dependent patterns and calculate optimal heat pump capacities for both electrified and non-electrified homes.

Load Disaggregation Methodology
Smart Meter Data Total Load NILM Algorithm Deep Learning + NILMTK Disaggregated Loads 🔥 Heating ❄️ Cooling ⚡ Base Load 🍳 Appliances Heat Pump Sizing Optimal kW 🌡️ Weather Data
The pipeline shows how household energy data flows through the system: smart meter readings are processed by the NILM algorithm (enhanced with weather data), which separates the total consumption into individual loads—heating, cooling, appliances, and base load. This enables accurate heat pump sizing recommendations.
Python NILMTK Deep Learning Load Disaggregation Power BI

Moonshot Project: Underground Horizons

10/2024 – 01/2025 +
UPC Barcelona – Prototyping & Future Thinking

Designed an innovative underground vertical farming system for Mars that addresses the unique challenges of Martian agriculture: extreme radiation, temperature fluctuations, and limited water resources. The system leverages underground lava tubes for natural radiation shielding and thermal stability.

Key innovations: Integrated precision farming technology with LED grow lights optimized for plant photosynthesis, closed-loop hydroponic systems for water recycling, and CO₂ extraction from the Martian atmosphere. Surface-mounted PV arrays provide sustainable power for the entire operation.

Underground Farming System Architecture
Phobos MARS SURFACE ☀️ Solar PV 🛡️ Lava Tube Chamber (Radiation Shielded) GROW ZONE LED + Hydroponics 💧 WATER ♻️ 99% Recycled 🌬️ CO₂ ⬇️ From Atmosphere ⚡ POWER 🔋 Distribution
The diagram illustrates the self-sustaining farming system: surface-mounted solar PV panels power the underground facility housed in natural lava tubes (providing radiation shielding). Inside, vertical grow racks with LED arrays maximize crop yield, while closed-loop systems recycle water and extract CO₂ from Mars's atmosphere for plant growth.
-60°C
Avg. Mars Temp
95%
CO₂ Atmosphere
99%
Water Recycled
Vertical Farming Solar PV Hydroponics Space Agriculture Closed-Loop Systems

Modelling & Optimisation for Net Zero Communities (Bachelor Thesis)

10/2022 – 06/2023 +
De Montfort University – Final Year Project

Developed a comprehensive multi-criteria optimisation framework for designing net-zero energy communities. The model integrates real-time meteorological data via APIs, energy generation/consumption profiles, and techno-economic parameters to evaluate renewable energy configurations.

Methodology: Analysed multiple scenarios combining solar PV, wind turbines, and battery storage systems. Optimization criteria included energy self-sufficiency, levelized cost of energy (LCOE), net present value (NPV), and carbon emission reductions. The tool helps communities identify the optimal balance between investment costs and environmental benefits.

Multi-Criteria Optimization Framework
Net Zero Optimizer Energy Performance Economic Viability Environmental Impact Technology Mix ☀️ Solar PV 💨 Wind 🔋 Storage 🌡️ Weather API 📊 Data
The framework shows how the optimizer balances four key criteria: Energy Performance (self-sufficiency), Economic Viability (LCOE/NPV), Environmental Impact (emissions), and Technology Mix (solar, wind, storage). Data inputs from weather APIs and consumption profiles feed into the model to find optimal renewable energy configurations.
Python Multi-Criteria Optimization Weather APIs Techno-Economic Analysis Renewable Energy

Education

MSc in Digital Energy Systems

09/2024 – 07/2025
EIT InnoEnergy & UPC, Barcelona, Spain
AI for Energy, data-driven energy systems, integration of renewable energy in the grid. Master thesis grade: 9/10.

MSc in Sustainable Energy Systems

08/2023 – 06/2024
EIT InnoEnergy & KTH, Stockholm, Sweden
Environomical Pathways for Sustainable Energy Systems. Specialised in energy markets, energy conversion, efficiency, energy resources, and renewable energy.

Entrepreneurship Integrated Programme

08/2023 – 05/2025
ESADE Business School, Barcelona, Spain
110 academic hours on entrepreneurial courses: financial analysis, project management, business model canvas, digital business, marketing strategy, investment strategy. Programme designed to inspire engineers toward sustainable energy value creation and new venture creation.

Summer School in Data Science & AI for Energy

07/2024 – 08/2024
KU Leuven, Belgium
Data science and AI for energy flexibility and demand optimisation. Python skills for data analysis, visualisation, and dashboard creation. Machine learning, time series analysis, statistical principles for forecasting, and optimising energy-flexible resources.

BEng in Energy Engineering with Industry Year

09/2019 – 05/2023
De Montfort University, Leicester, UK
First Class Honours. Specialised in Energy Economics & Policy, Energy Conversion & Storage Systems, Low Carbon Energy Technology, and Renewable Energy. Industry year at Synergia (Athens, Greece).

Photos

I've been passionate about street and travel photography since I was 16, capturing everyday moments, architecture, and natural light through a distinctive visual lens.

Photography 1
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Photography 3
Photography 4

Skills

Technical Skills

Python Polysun Velaris Pyomo Gurobi Machine Learning Data Analysis ANSYS CREO Parametric MS Office

Domain Expertise

Energy Storage (BESS) Renewable Energy Market Research Project Management Energy Transformation Entrepreneurship

Languages

French (Native), Greek (Native), English (C2 spoken, C1 written)

Awards & Achievements

1st Prize – Schneider Electric Hackathon at ENLIT

11/2024
Milan, Italy. Designed Smart Energy Strategy App to optimise energy portfolios, balance costs, and reduce emissions through data analysis and scenario simulations.

Entrepreneurship Integrated Programme Certificate

05/2025
ESADE Business School. 110 academic hours covering financial analysis, project management, business model canvas, digital business, marketing and investment strategy.

3rd Prize – European Schools Science Symposium (ESSS)

03/2015
Varese, Italy. Designed and made a small-scale model of a desalination station using only renewable energy sources to address the challenge of clean water in developing countries.