European Technology and Innovation Platform

HWG 100% RE Districts


Proposed Chair of HWG

Ralf-Roman Schmidt


Proposed Vice-chair

Open for discussion

Members of the HWG (ideally at least one from each Technology Panel and other ETIP RHC members!

Ongoing call for experts


Name of the HWG

100% RE Districts

Proposed duration

18 months (e.g. from 12/2018 to 05/2020)

Objectives / goals

Heating & cooling and hot water preparation account for over half of the energy demand in buildings. Paired with an increasing urbanization rate, this demand defines one of the key challenges of the energy transition in Europe (and beyond): How to decarbonize heating & cooling in urban districts?


This overarching challenge is actually a cluster of challenges, e.g.:

·         Refurbishment rates of buildings and replacement rates of fossil fuel heaters are low

·         Fossil fuel prices are low

·         Space for harvesting and storing locally available energy is sometimes scarce

·         Ownership structures are often highly diverse and responsibilities unclear

At the same time urban districts come with a number of opportunities:

·         Dense population allows for the use of community schemes such as DHC

·         DHC allows for harvesting of locally available otherwise unused sources

·         Where DHC is not possible other technologies can fill the gap, hybrid solutions are possible, too

·         Cities and municipal companies as well as large building owners can take the necessary steps

·         The HWG is tasked with the development of a roadmap supporting the decarbonization of urban districts across Europe. On top a vision for 2050 is prepared and all results communicated towards policy-makers in the form of a briefing.

Actions / description of methodology

The group works in close collaboration with the other HWGs. Internally the HWG will work in sub-groups on various matters that are key to this challenge. These topics could be:

       New district heating systems

       Refurbishment of existing district heating systems

       Urban sources for heating & cooling

       Individual heating solutions for urban use

       District cooling and individual cooling solutions for urban use

       Measures on the secondary side to support the roll-out of RES H&C solutions

       Toolboxes and stakeholder support

       Policy developments

       Economics and markets of and for RES DHC

Work package structure 

WP1: Creation of work structure and groups

WP2: Preparation of topic specific roadmaps

WP3: Preparation of joint roadmap and vision

WP4: Advocacy and preparation of briefing

WP5: Regular public workshops (months 4, 8, 12, 16)

WP6: Final dissemination event and report

Timeline / Milestones 

M1: Basic working structure and needed forms for groups (4)

M2: First public workshop (4)

M3: Finalisation of topic specific papers (8)

M4: Second public workshop (8)

M5: Finalisation of joint roadmap (12)

M6: Third public workshop (12)

M7: Finalisation of vision and briefing (16)

M8: Fourth public workshop (16)

M9: Finalisation of dissemination report (18)

M9: Final dissemination workshop (18)



D1: Topic specific roadmaps (4)

D2: Joint roadmap (8)

D3: Vision (12)

D4: Briefing (16)

D6: Report (18)