Vacancy No. ETI 02-19

ETI 02-19 Master Thesis: Further development and Optimization for the Hybrid Off-Grid Techno-Economic Model (HOTEM)

Job description

A key element of providing an economically feasible off-grid system for electricity demand in remote areas is the techno-economic modeling of the system over its lifetime. Therefore, it is necessary for the planning phase to have a software tool for the best configuration and components sizing of the hybrid system. With such a tool different system scenarios and solutions for ending global energy poverty through off-grid hybrid renewable electricity systems (OHRES) can be evaluated.       


  • Further modelling of the hybrid system components (PV, Wind, Batteries, etc) and the identification of major indicators affecting the reliability of the system.
  • Development of the energy management system to control energy production from the hybrid system.
  • Further enhancement of the WACC economic analysis boundary conditions currently used in the model to include further dynamic financial figures as the internal rate of return (IRR), and depot service coverage ratio (DSCR).
  • Development of the storage modelling to differentiate between different battery types (lead-acid, Lithium-ion and hybrid battery storage).
  • Developing a user friendly GUI for HOTEM
  • Integrating HOTEM with OSDAP (Off-grid Systems Data Analysis Platform). 
  • Adapting the whole HOTEM from Matlab scripting to Python.
  • Include an existing LCA analysis modelling into HOTEM. 
Personal qualification
  • Master student in energy engineering, renewable energy or electrical engineering.
  • Preferably a good understating of photovoltaics, small wind turbines and electrical energy storage in the context of batteries.
  • Interest in off-grid renewable energy system applications, especially storage systems, and micro-grids.
  • Very Good knowledge of Matlab scripting and graphical user interface (GUI).
  • Knowledge of python for data analysis is an advance.
  • Preferably a basic understanding of energy economics and techno-economic analysis.
  • The capability of working independently, being self-motivated and reliable.
  • Basic management skills, especially for time management and decision-making process.
Organizational unit

Institute of Electrical Engineering (ETI)

Starting date

01.02.2020 (or based on agreement)

Contract Duration

6-months according to study regulations

Contact person in line-management

M.Sc. Mohamed Elkadragy

Phone +49 721 608-28232  (e-Mail:


Please apply online using the button below for this vacancy number ETI 02-19.
Personnel support is provided by 

Ms Schaber
phone: +49 721 608-25184,

Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

If qualified, severely disabled persons will be preferred.