Up to 80% of total energy consumption in the EU is attributed to urban areas, mostly with historical urban centres. At the same time, low carbon energy supplies in the style of energy storages, especially in historical urban centres, is a rarity in central Europe. This is mainly because of strict architectural protection constraints, higher implementation costs and often also conflicts with town planning policies.

The STORE4HUC project aims to improve territorially based low-carbon energy planning strategies. It will enrich policies that support climate change mitigation in historical city centres by focusing on improved urban and spatial planning for integrating energy storage systems to enhance the public institutional and utility capabilities. 

The partners will develop policy recommendations and identify suitable integrated technological solutions to overcome low carbon development barriers in historic centres. They will also facilitate the development of open energy and load management systems for energy efficiency and use of renewables. With its concepts and pilot systems, STORE4HUC will provide smart city test beds, where technicalities will be reconciled with historical and architectural values. 



Transnational evaluation by fellow specialists of research

We conducted qualitative interviews with a group of experts are about the lessons learned during the planning phase of the pilots. These are based on inquiries designed in close cooperation with the partners of the four Store4HUC pilots including particular background information for the interviewees. What we learned is now summarised in a full report: Read the full article by clicking here!


The autarky rate tool is here!

Happy New Years everyone!

Together with new year greetings we would like to present you the Autarky Rate tool. It is now finalized and ready for every house owner or possible stakeholder to use and we invite everyone to do so.

This online tool can evaluate the technical, economical and ecological effects of the chosen renewable energy storage system configuration.

Read the full article here.


New electricity storage evaluation tool  in the pipeline

The premiere of our Autarky Rate Tool is almost here! This online tool is soon available to evaluate the technical, economical and ecological effects of the chosen renewable energy storage system configuration.

Read more about the Autarky Rate Tool here.

Autarky Rate Tool


Latent Heat Storage explained

Thermic energy can be stored in various ways. Latent heat storage is not only an environmentally conscious but also a very energy efficient solution.
The pilot of Lendava by our project STORE4HUC will introduce a paraffin-based latent heat storage in the local library building. 

How do latent thermal storages work? What is the paraffin-based solution and what are the challenges at historic sites?

Read more about the advantages and challenges of paraffin-based latent heat storages here.

1st NewsLETTER 
Project Activities

First Store4huc Newsletter

The first Newsletter of our Project is out now!

Subscribe to our newslist to receive all future newsletters and stay up-to-date in green energy solutions for a sustainable urban future. We highlight news with special relevance on innovative energy solutions in historic city centers and green energy solutions for a climate-friendly urban life.  

Read the Newsletter by clicking here.


Presentazione del Progetto

Il progetto, a cui partecipano enti e istituzioni di 5 Paesi europei, si pone come obiettivo principale lo sviluppo di sistemi di approvvigionamento energetico sostenibili nei centri storici cittadini, capaci di abbattere le emissioni grazie all’utilizzo di sistemi di produzione di energie rinnovabili collegati a sistemi di stoccaggio energetico. 

Clicca qui per maggiori informazioni...


Pilot in LendaVA, Slovenia

Public Library in Lendava
The pilot of a paraffin-based latent storage attached to a geothermal heating system is a highly innovative investment in Slovenia. Lendava’s library, a neo-baroque villa (1906) will be connected to the district heating network and a paraffin cell buffer-based energy storage system will be implemented. 



Outlook: Thermos Flask Serves as Example for Sustainable Energy Storage

In a fascinating new project, the citizens of Heidelberg receive a new sustainable energy storage tower with award-winning look. This energy storage tower will be completed in 2020 and is more than a sustainable energy storage cylinder: a knowledge center, tourist attraction and hopefully a city icon.


21. 10. 2019

Pilot in Bračak, Croatia

We do solve the problem of equipping cultural heritage listed buildings with green energy! Here's how we plan to invest in installing a properly sized photovoltaic system and battery storage in a protected cultural and heritage monument in Croatia.


15. 10. 2019


Project Launch in Croatia 

Old and modern in symbiosis? Why not! It is a practice that has been nurtured in Western European countries for years, now Croatia catches up with its numerous prestigious cultural sites. With the goal of extending the life of these buildings and enhancing the sustainability of cultural objects, our Croatian partners held the project launch event in Bračak Energy Center on 16th of September.




First deployment Desk Meeting in croatia

Obnovljivi izvori energije i objekti pod kulturnom zaštitom?! Naravno, zašto ne?! Još jedan novi #EU projekt #Store4HUC koji za cilj ima i postavljanje fotonaponskog sustava na Energetski centar Bračak, baterije za skladištenje energije te unapređenja postojećeg sustava upravljanja zgradom. #regea #energytransition




Within the Store4HUC project an electrical storage for an already existing slope elevator in combination with a PV-system is planned.




pilot City Weiz, Austria

Within the project Store4HUC a thermal storage will be implemented in the parish church of Weizberg which is connected to the public heating grid. The parish church is located on a hill in the historic area of Weiz.




Novi projekt: store4huc

Glavni cilj projekta Store4HUC je unaprijediti i obogatiti strategije energetskog i prostornog planiranja koje su usmjerene na povijesne gradske jezgre usredotočujući se na integraciju sustava za pohranu energije u njih. U projektu ukupne vrijednosti 1.726.608,70 eura FER će razviti programske alate za planiranje optimalnog rada sustava pohrane energije u okruženju povijesnih gradskih jezgri pri čemu se poštuju specifična ograničenja takvih zaštićenih sredina.




Store4huc projektbeginn

Das neue europäische Projekt Store4HUC entwickelt Lösungen für erneuerbare Energien und ihre Speicherung in denkmalgeschützten Gebäuden. 

„Denkmalgeschützte Häuser mit erneuerbaren Energien zu versorgen und diese zu speichern ist oft schwierig: Sichtbare Veränderungen am Gebäude sind nicht möglich und Einbauten oft schwierig. Dafür sind fantasievolle Lösungen gefragt“, so Dr. Wolfgang Hofstetter vom  Klima-Bündnis.

Lesen Sie mehr...

Autarky Rate Tool

Measuring the degree of self-sufficiency with just a few clicks and evaluating the technical, economic and ecological effects of the chosen system configuration – this is now provided by the so-called Autarky Rate Tool. The tool is suitable for all those who are interested in installing electric storage systems in combination with renewable energy sources. The aim is to motivate users to take a closer look at the topic and subsequently contribute to an increased and intelligent use of electric storage solutions. Another important aspect of the tool is the checklist, which summarises the results in a pdf document. This document also contains an analysis of the calculation results as well as specific information on the use of storage in historic old towns.

You can test and use the Autarky Rate Tool by clicking here. It is available in English and German.

Autarky Rate Tool infographic

Optimal Sizing Calculator

To maximize the contributions while minimizing the price of the installations, the Optimal Sizing Calculator computes the optimal sizes of a Photovoltaic (PV) and a battery energy storage system (BESS) for a site. Those sizes are peak power of the PV system, energy capacity of the BESS, and power converter rated power of the BESS. The calculator uses typical yearly consumption profiles of a variety of consumers, but if you have your own consumption profile recorded you can use it to calculate your optimal parameters more accurately.

Please follow the instructions in the README text document and the User Manual in the zip folder carefully before working with the calculator.

You can download the calculator by clicking here! (100 MB)

If you have problems with the tool, feel free to contact us:

filip.rukavina@fer.hr or mario.vasak@fer.hr


target groups


local public


Regional public


sectoral agency


infrastructure and
public service


Interest groups/


higher education
and research


Business support


Project Activities

Project Duration

Start Date

April 2019

End Date

March 2022

Documents and publications

As the STORE4HUC proceeds, you will find valuable resources in the section in various format.