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WHY - Climbing the causality ladder to understand and project the energy demand of the residential sector
WHY Newsletter
WHY is the next step in improving energy demand modelling to forecast the domestic sector’s energy consumption.
September 2022
WHY - Second General Assembly & Consortium Meeting

On the 13th to the 14th of July consortium members came together in Bilbao at the University of Deusto to commence the second general assembly of the project. Furthermore, we invited three energy experts to talk about the current energy crisis and possible policy actions as well as strategies how to fight high-energy prices: Maria Kannavou - E3M, Greece; Philip Heilmaier - DENA, Germany; Jorge Fernández - Orkestra, Spain. Each expert had the opportunity to present their field and country in a short presentation after which a healthy discussion did develop.

Afterwards the WHY project members presented the progress we made this far. For example the impact of a tariff system on an energy cooperative as well as an overview over the different use cases which are developed at the moment. All activities of the first event day are recorded and can be found in the full text.

[Webinar] Towards energy aware behaviours: How studies on young generations can inform better policy design

EU Sustainable Energy Week 2022, September 29, 9.30-11.00

European Commission (Charlemagne building), Brussels + online

Register here!

  • What is the potential of youth in leading the change in habits needed to deliver on the energy transition? 
  • How can the existing knowledge on energy behaviours support better policymaking at various levels, with engaging measures?

Organised by H2020 NUDGE, ENCHANT, WHY and DECIDE.


Join the WHY project on 29th of September from 9:30-11:00 a.m. as we collaborate with fellow H2020 project NUDGE in their webinar series. The webinar titled “Towards energy aware behaviours: How studies on young generations can inform better policy design, will take a look at energy usage behaviour of the youth and how to include them better in policy.

Image by WHY Consortium
Stakeholders Enrich the WHY Use Cases - Release of Deliverable 1.3 Use Case Definition

It's finally here! Deliverable 1.3 "Use Case Definition" includes the definition of the five Use Cases of the WHY project, which capture a wide diversity of contexts from the micro-grid to energy community, national, European, and global level. These Use Cases play a central role in the project, as through their application in diverse situations, the WHY Toolkit and models will be tested and validated. This deliverable aims to provide detailed definition and design for the Use Cases, which will be then operationalized and carried out in WP5 using the WHY Toolkit and Energy System Models (ESMs). In this way, the impacts of WHY modelling enhancements on energy and climate strategies at different jurisdiction levels, from the micro-grid and energy communities to the European and global levels.




Consumers’ Electricity Consumption Impact of New Time-of-Use Rates in Spain

 by Leire Astigarraga, GOIENER

In July of 2019, the CNMC (National Markets and Competition Commission) published the first proposal for a new methodology for calculating electricity transport and distribution tolls (new rates based on time-of-use) in Spain. The implementation of these rates was scheduled for 1st of January of 2020, but the process suffered numerous delays and modifications. Finally, the new rates came into force on 1st of June of 2021. This rate change has meant a series of modifications in the billing of electricity consumption.

The EU Use Case Workshop Report

On 19th of May, the WHY project held a workshop titled "Improving demand-side modelling to inform ambitious climate policy in the European Union" to engage with European energy experts. Spotlighting two different areas, Technical Aspects of Energy Modelling and Policy Interventions, stakeholders gave valuable insights for considering key aspects when modelling the residential sector. The stakeholders' input, representing both perspectives: technical and political, will help to determine and prioritise the most relevant interventions to consider in the WHY Toolkit. The report, available online on our website and linked here, provides a detailed synopsis of the event and summary of the stakeholder input.

Survey: Why Do Consumers Participate in the Energy Transition?

We are assessing the determinants (factors) that lead consumers to participate in the energy transition in order to create better policies for them. The focus is on the reasons behind investments in flexibility markets (e.g. PV panels), energy efficiency (e.g. building insulation), mobility (e.g. electric vehicles) and energy conservation (e.g. sharing economy). The objective of this survey is to build a set of archetypes (a very typical example of a certain person which is present in the collective unconscious) that characterise as much as possible the European population when investing in technologies or behaviors or products related to the energy transition.

This survey is a collaborative activities of the H2020-WHY (, H2020-PARITY ( and H2020-ATELIER ( projects.




WHY is the next step in improving energy demand modelling and predicting household energy consumption. The WHY project develops innovative methodologies and a toolkit for short- and long-term household energy consumption modelling. Use cases benchmark these models ranging from local to European sized energy grids.  To bundle findings and outcomes of projects dealing with energy efficiency and energy consumption as well as modeling energy consumptions to support policies related to energy transition we seek to publish interesting news and articles. We seek articles and news from other projects and inititiatives, as well as by researchers or policy initiatives interested in distributing their results  in an easy-to-understand language.

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This work is licensed under a Creative Commons Attribution 4.0 International License.


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WHY The project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 891943.