FLEXInet - Intelligent flexibility through integrated hybrid storage technologies

Research Themes: Energy, Software technology & Intelligent systems

A TRL is a measure to indicate the matureness of a developing technology. When an innovative idea is discovered it is often not directly suitable for application. Usually such novel idea is subjected to further experimentation, testing and prototyping before it can be implemented. The image below shows how to read TRL’s to categorise the innovative ideas.

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Summary of the project

Most of the energy we consume at our homes, comes from elsewhere and is mostly used as electrical energy and for heating or cooling. Innovative in this project is cross energy coupling (electrical energy and heat) with innovative way of electrical energy storage and heat storage. The energy neutral house can generate its own solar energy which can be stored in battery (different battery technologies are going to be combined such as salt water battery), connected electrical vehicle and heat. The researchers aim to develop an integral system for the intelligent and integrated control and implementation of hybrid energy storage technologies in the built environment. They are working on making the collective heat supply and the general energy consumption more sustainable – combining PV panels on the roof to heat water which can be stored in different devices which have various shelf lives for capturing heat for up to two weeks’ time. Energy is not only stored as heat but also in batteries in the house or even in your electric vehicle. Subsequently the researchers are developing ways to install the needed power electronics for this underground. This system of generating and storing energy will be managed through an intelligent management system that can switch between the various energy resources available at the house - combining stationary battery storage, reused batteries, electric vehicle charging, vehicle-to-grid technology, flexible heat pump and heat storage. 

What's next?

To further the innovation hydrogen storage will be added, more ancillary services for the grid have to be developed with corresponding regulations and business case.

Contribution to the Energy transition?

FLEXInet contributes to the transition as it demonstrates how existing houses can become energy neutral by having the cross coupling of energy usage, storing the needed power electronics underground and having different energy storing option including heat.

prof. dr. Pavol Bauer

dr. Laura Ramirez Elizondo

dr. Gautham Ram Chandra Mouli

Dr Ten


DC Opportunities



The Green Village

LeydenJar Technologies


Emmet Green

Faculties involved