Annex 61 Subtasks

Subtask A

Leaders: Dr. Ove Mørck, Cenergia (Denmark) and Dr. Alexander Zhivov, ERDC- CERL (USA)

Subtask A is focusing on the evaluation of case studies of existing deep energy retrofit (DER) projects, and on the development and analysis of financially attractive DER bundles of technologies for three categories of buildings and climate conditions of participating countries.


  • Summary and Analysis of 26 International Case Studies
  • Deep Energy Retrofit Guide

Subtask B

Leaders: Robert Slattery, Oak Ridge National Laboratory (USA) and Rüdiger Lohse, KEA (Germany)

The objective of Subtask B is to develop business models for DER/refurbishment of buildings and building groups using public or private funding or their combination.


  • Deep Energy Retrofit Guide for decision makers
  • Deep Energy Retrofit Business Guide

Subtask C

Leader: (Lead) Cyrus Nasseri, Department of Energy, FEMP (USA)

The objective of Subtask C is to demonstrate selected DER concepts using combined government/public and private funding and to prepare case studies of these projects. The goal is for each participating country to implement at least one DER project that would illustrate how the regulatory and economic environment (i.e., energy prices, construction costs, etc.) encountered in each country shaped the particular business and technical model used.


  • Lessons Learned from Deep Energy Retrofit Pilot Projects

Subtask D

Leaders: Heimo Staller, AEE (Austria) and Rüdiger Lohse, KEA (Germany)

Subtask D will integrate results of Subtasks A, B, and C and will develop a framework and models for government/public-sector decision makers and ESCOs, with a focus on the early stages of project identification and determination.


  • DER IT-Tool-kit

Annex Info & Contact

Status: Completed (2012 - 2017)

Operating Agents

Rüdiger Lohse
KEA Klimaschutz- und Energieagentur
Baden-Württemberg GmbH
Kaiserstr. 94a
76133 Karlsruhe
Tel: +49 (0)721 984 71 15

Dr Alexander Zhivov
US Army Engineer Research and Development Center Construction Engineering Research Laboratory
2902 Newmark Dr.
Champaign, IL 61826-9005
Tel: +1 217 373 4519