Factsheet: Business and Technical Concepts for Deep Energy Retrofit of Public Buildings (PDF 2.13MB) 
June 2018
Stringent targets for reductions in energy use in government / public buildings are now becoming more common in many industrialised countries. However, the funding and ‹know-how› (applied knowledge) available for owner-directed energy retrofit projects has not kept pace with new requirements to increase the number of energy retrofits and to improve the energy efficiency of existing buildings. In recent years, the Energy Savings Performance Contract (ESPC) has proven to be a very energy and cost efficient tool in some countries. This project aims to increase the acceptance of ESPCs, and to broaden the implementation of deep energy use reduction through refurbishment of existing buildings using ESPCs.

EBC Annex 61: Business and Technical Concepts for Deep Energy Retrofit of Public Buildings (PDF 2.42MB) 
Project Summary Report
2020
Editor(s): Alexander Zhivov and Rüdiger Lohse

Deep Energy Retrofit - A Guide to Achieving Significant Energy Use Reduction with Major Renovation Projects 
2020
Author(s): Alexander Zhivov, Rüdiger Lohse
This book provides detailed information on how to set up Deep Energy Retrofits (DERs) in public buildings, and shares in-depth insights into the current status of the major technologies, strategies and best practice examples of how to cost-effectively combine them. Case studies from the U.S.A. and Europe show that that Deep Energy Retrofit can be achieved with a limited core technologies bundle readily available on the market. Characteristics of some of these core technology measures depend on the technologies available on an individual nation’s market, on the minimum requirements of national standards, and on economics (as determined by a life cycle cost analysis). Also, requirements to building envelope-related technologies (e.g., insulation levels, windows, vapor and water barriers, and requirements for building airtightness) depend on specific climate conditions. This Guide provides best practice examples of how to apply these technologies in different construction situations.
Order - $149.00 USD

Deep Energy Retrofit - Business Guide for Public Buildings 
Business and Financial Models
2019
Author(s): Rüdiger Lohse, Alexander Zhivov
This book provides detailed information on how to set up Deep Energy Retrofits (DERs) in public buildings, and shares in-depth insights into the current status of the major technologies, strategies and practical best practice examples of how to cost-effectively combine them. Case studies from Europe are analyzed with respect to energy use before and after renovation, reasons for undertaking the renovation, co-benefits achieved, resulting cost-effectiveness, and the business models employed.
Order - $44.99 USD

Deep Energy Retrofit - A Guide for Decision Makers (PDF 2.36MB) 
October 2017
Author(s): Alexander Zhivov, Rüdiger Lohse
Many governments worldwide are setting more stringent targets for reductions in energy use in government/public buildings. Buildings constructed more than 10 years ago account for a major share of energy used by the building stock. However, the funding and “know-how” (applied knowledge) available for owner-directed energy retrofit projects has not kept pace with new requirements. With typical retrofit projects, reduction of energy use varies between 10 and 20%, while actual executed renovation projects show that energy use reduction can exceed 50%, and can cost-effectively achieve the Passive House standard or even approach net zero-energy status

Deep Energy Retrofit - Pilot Projects (PDF 3.16MB) 
October 2017
Author(s): Cyrus Nasseri, Ruediger Lohse, Lawrence Markel, Ove Moerck, Kinga Porst Martina Riel, Jay Tulley, Brian Clark, Targo Kalamees
The implementation of deep energy retrofits (DER) is still not common practice. The way to combine energy conservation measures (ECMs) in an efficient least-cost way, the synergies between ECMs, the quality assurance mechanisms, and the methods to finance and implement DER are still far from being common knowledge. In the context of the research work of IEA EBC Annex 61, the objective of Subtask C was to implement pilot projects on the basis of the knowledge collected in the Annex 61 working group. Subtask C specifically targeted the documentation of the use of cost-optimized applications of the core bundle of technologies defined in Subtask A; the use of different financing instruments, business models and acquisition strategies collected by the Subtask B team and summarized in the DER Business Guide; and the evaluation of the use of quality assurance methods throughout all phases of the project to better guide prospective DER project stakeholders.

Deep Energy Retrofit – Case Studies (PDF 30.38MB) 
October 2017
Author(s): Mørck, Ove, Miriam Sánchez, Lohse, Rüdiger, Martina Riel, Alexander Zhivov
IEA EBC Program Annex 61 has conducted research with the goal of providing a framework, selected tools, and guidelines to significantly reduce energy use (by more than 50%) in government and public buildings. The scope of the project was limited to public buildings that were constructed before the 1980s with low internal loads (e.g., office buildings, dormitories, barracks, public housing and educational buildings), and that were undergoing major renovation. One of the Annex 61 deliverables is the book of “DER Energy Retrofit – Case Studies,” which contains 26 well documented case studies from Europe (Austria, Denmark, Estonia, Germany, Ireland, Latvia, Montenegro, The Netherlands, United Kingdom) and the United States. After these data were collected, the case studies were analyzed with respect to energy use (before and after renovation), reasons for undertaking the renovation, co-benefits achieved, resulting cost effectiveness, and the business models followed. Finally, “lessons learned” were compiled and compared.

The SEAF Project (PDF 1.14MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Maria Fields

Financing Energy Performance Upgrades: Challenges and Opportunities (PDF 0.92MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Ryan Colker

Business Models - Army Approach (PDF 0.28MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Randy Smidt

Business Models Used by GSA (PDF 0.31MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Sharon Conger

Legal Perspectives of EPC Business Models in the Public Sector (PDF 0.51MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Margaret Simmons

The Future of Energy Efficiency Financing in the U.S. Federal Sector (PDF 0.54MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Tim Unruh

Army Policies to Energy Efficiency in Existing Buildings (PDF 0.21MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Katherine Hammack

Introduction to DER Business Guidelines (PDF 1.45MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Rüdiger Lohse

The Full Value of Deep Energy Retrofits (PDF 38.55MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Cara Carmichael

DER Mechanical Quality Assurance (PDF 4.79MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Brian Clark

A Product Delivery Quality Assurance Process (PDQA) for Deep Energy Retrofit (DER) Projects (PDF 4.58MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Paul Johnson

Product Delivery Quality Assurance Process (PDQA) for Deep Energy Retrofit (DER) (PDF 2.29MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Alexander Zhivov

Water Vapor Control (PDF 3.71MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): William Rose

Air Barrier (PDF 20.68MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Peter Spafford

Air Barrier (PDF 10.24MB) 
Nick Alexander
September 2016
Author(s): Nick Alexander

Air Barrier (PDF 26.04MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Wagdy Anis

Thermal Bridges (PDF 17.42MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Mark Lawton

Windows- Technologies and Installation (PDF 29.03MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Chris Mathis

Insulation Materials and Their Installation (PDF 10.42MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Shawn Torbert, Alejandra Nieto

Insulation Materials and Their Installation (PDF 14.75MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Paul Bertram

Building Envelope Insulation Optimization – Modeling Results (PDF 1.01MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Richard Liesen

Bundles of Technologies for DER (PDF 25.06MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Alexander Zhivov

DIA Case Study (PDF 4.09MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Dusty Wheeler and Phil Smith

Barracks Building DER Case Study (PDF 24.7MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Jay Tulley

Recent Initiated DER Projects in the Federal Sector — GSA Case Studies (PDF 12.04MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Kinga Porst Hydras

Overview of 26 Accomplished DER Case Studies (PDF 2.2MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Kirsten Engelund Thomsen

Overview of DER Pilot Case Studies (PDF 1.3MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Cyrus Nasseri

Concept for Cost-Effective Deep Energy Retrofit (PDF 8.94MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Mark Zimmerman

Implementation of Major Renovation and DER in Existing Buildings (PDF 0.51MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Steve Bonneau

DER from the Perspective of FEMP- Targets and Efforts (PDF 4.17MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Tim Unruh

Introduction to IEA Annex 61 and DER Forum (PDF 8.75MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2016
Author(s): Alexander Zhivov

The Economic Challenges of Deep Energy Renovation - Differences, Similarities and Possible Solutions - Office Building in Germany (PDF 0.86MB) 
2016 REHVA World Congress - Aalborg
May 2016
Author(s): Martina Riel, Rüdiger Lohse
Within EBC Annex 61”Business and Technical Concepts for Deep Energy Retrofit of Public Buildings” are developed to increase pace and quality of DER projects in the public sector. Subtask A targets is to assess accomplished DER projects to define find optimized bundles both from energy efficiency and economical perspective in each of the participating countries. Based on the assumptions on Deep Energy Retrofit (DER) defined by the Annex 61 team as a minimum saving of 50% against the baseline, modeling studies for different types of buildings and different climate zones have been done.

Achieving Deep Energy Retrofit in Latvian Public Building - Simulation Study (PDF 0.43MB) 
2016 REHVA World Congress - Aalborg
May 2016
Author(s): Galina Stankevica, Andris Kreslins, Anatolijs Borodinecs, Renars Millers
During the last few decades an increased attention has been directed towards reduction of building energy use. This paper presents results of a simulation study to achieve deep energy retrofit in a five story dormitory of about 3825 m2, located in Latvian capital Riga. Simulation was carried out within the framework of Annex 61 “Business and Technical Concepts for Deep Energy Retrofit of Public Buildings” of program “Energy Conservation in Buildings and Communities” by International Energy Agency. A software “Riuska” was used for comfort and energy simulation.

Passive House Renovation of an Old Multi-Storey Office Building – Analysis and Monitoring (PDF 0.36MB) 
2016 REHVA World Congress - Aalborg
May 2016
Author(s): Jørgen Rose, Kirsten Engelund Thomsen, Ove C. Mørck
Denmark is participating in IEA Annex 61 “Development and demonstration of concepts for deep energy retrofit in government/public buildings”. The purpose of the Annex is to improve the decision-making process to achieve deep energy retrofits of government/public buildings, starting with the determination of bundles of technologies and corresponding business models using combined public and private funding

How to Achieve a Deep Energy Retrofit (DER) with Major Building Renovation (PDF 0.63MB) 
2016 REHVA World Congress - Aalborg
May 2016
Author(s): Alexander Zhivov, Rüdiger Lohse
Numerous pilot projects conducted all over the world have demonstrated that energy use in commercial and public buildings can be reduced by more than 50% after renovation. Research conducted under the International Energy Agency’s Energy Conservation in Buildings and Community Systems (IEA ECBCS) Annex 46 has identified more than 400 energy efficiency measures that can be used when buildings are retrofitted. Implementation of some individual measures can significantly reduce building heating and cooling loads or minimize energy waste, but require significant investments with long paybacks.

A Parametric Study of Core Energy Efficiency Measures Used in Deep Energy Retrofits for Dining Facilities in U.S. Climate Zones (PDF 0.37MB) 
2016 REHVA World Congress - Aalborg
May 2016
Author(s): Michael Case, Alexander Zhivov, Richard Liesen

Best Practices of Deep Energy Retrofit Building Projects from Around the World (PDF 0.48MB) 
2016 REHVA World Congress - Aalborg
May 2016
Author(s): Ove C. Mørck, Miriam Sánchez-Mayoral Gutiérrez, Alexander M. Zhivov, Ruediger Lohse
Many governments worldwide are setting more stringent targets for reduction of energy use in government/public buildings, i.e. to take the lead and show the right direction for a sustainable future. However, the funding and “know-how” (applied knowledge/experience) available for owner-directed energy retrofit projects have not kept pace with the new requirements.

Less than the sum of its parts – Economic and Environmental Challenges in designing Deep Energy Retrofit Concepts, the Case of Sweden (PDF 0.39MB) 
2016 REHVA World Congress - Aalborg
May 2016
Author(s): Claudio Nägeli, York Ostermeyer
The International Energy Agency’s Energy in Buildings and Communities Programme Annex 61 “Business and Technical Concepts for Deep Energy Retrofit (DER) of Public Buildings” aims at developing financially and technically feasible deep energy retrofit concepts. These concepts should consist of bundles of core technologies, which when applied in major renovations of pre 1980 buildings should yield a site energy reduction by 50% or more. The individual technological solutions to achieve this depend on national conditions such as building standards, general building practices and most importantly the climatic conditions.

New Buildings Institute (PDF 8.92MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
January 2016
Author(s): Cathy Higgins

The new EU strategy: Financing energy efficient retrofit (PDF 2.64MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
January 2016
Author(s): Radim Kohoutek

The new EU strategy: Financing energy efficient retrofit (PDF 4.97MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
January 2016
Author(s): Rosenthal

Energy Savings Performance Contracting for the school complex Riedlingen (PDF 12.25MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
January 2016
Author(s): Michael Pietzner

Deep Energy Retrofit and Energy Performance Contracting: The Belgian Experience (PDF 3.1MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
January 2016
Author(s): Lieven Vanstraelen

Business models for deep energy retrofit using private and public funding (PDF 0.55MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
January 2016
Author(s): Marko Nokkala

Business models for deep energy retrofits in government buildings using private and public funding (PDF 1.77MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
January 2016
Author(s): John Shonder

EU Project “School of the Future”— Refurbishment of School Buildings Toward Zero Emission with High-Performance Indoor Environment (PDF 3.04MB) 
2016 ASHRAE Winter Conference - Orlando
January 2016
Author(s): Heike Erhorn-Kluttig, Hans Erhorn, Stephan Kempe, Christoph Hofle, and Jurgen Gorres
The aim of the School of the Future project (Fraunhofer IBP 2015), which receives funding within the European
Union’s 7th Framework Program, is to design, demonstrate, evaluate, and communicate shining examples of how to reach the future high-performance building level. School buildings, their owners, and their primary users, namely students, i.e., the next generation, are the focus of the project.

The Economic Challenges of Deep Energy Renovation: Differences, Similarities and Possible Solutions in Central Europe: Austria and Germany (PDF 4.35MB) 
2016 ASHRAE Winter Conference - Orlando
January 2016
Author(s): Ruediger Loshe, Heimo Staller, and Martina Riel
Many governments worldwide are setting more stringent targets for reductions in energy use in government/public buildings. Buildings constructed more than 10 years ago account for a major share of energy used by the building stock. However, the funding and know-how (applied knowledge) available for owner-directed energy retrofit projects has not kept pace with the new requirements.

The Economic Challenges of Deep Energy Renovation—Differences, Similarities, and Possible Solutions in Northern Europe: Estonia and Denmark (PDF 2.63MB) 
2016 ASHRAE Winter Conference - Orlando
January 2016
Author(s): Jorgen Rose, Kalle Kuusk, Kirsten Engelund Thomsen, Targo Kalamees, and Ove Mørck
Denmark and Estonia are participating in IEA EBC Annex 61 “Development and demonstration of concepts for deep energy retrofit in government/public buildings.” The purpose of the Annex is to improve the decision-making process to achieve deep energy retrofits of government/public buildings, starting with the determination of working bundles of technologies and corresponding business models using combined public and private funding.

Thermal Bridge Mitigation in Army Buildings (PDF 7.75MB) 
2016 ASHRAE Winter Conference - Orlando
January 2016
Author(s): Axy Pagan-Vazquez, Mark Lawton, Dahtzen Chu, Justine Yu, John Straube, Bob Ryan, and Scott Lux
The U.S. Department of Defense (DoD) has been spending a considerable amount of resources to satisfy the energy demands of its stock of buildings. It manages more than 500 fixed installations worldwide, with almost 300,000 buildings that account for approximately 30% of the DoD’s total energy use (DoD 2014). With respect to the Army, it was required by law to reduce energy intensity by 30%, as compared to the 2005 consumption (U.S. Congress 2007).

A Parametric Study of Energy Efficiency Measures Used in Deep Energy Retrofits for Two Building Types and U.S. Climate Zones (PDF 3.28MB) 
2016 ASHRAE Winter Conference - Orlando
January 2016
Author(s): Michael P. Case, Richard Liesen, Alexander M. Zhivov, and Michael Zhivov
Research conducted under the International Energy Agency’s Energy Conservation in Buildings and Communities Program Annex 61 generated a limited number of “core technology bundles” that can be used in DER projects
(Table 1). Characteristics of some of these “core technologies” depend on technologies available on an individual
nation’s market, minimum requirements of national standards, and economics (LCC analysis).

Core Bundles of Technologies to Achieve Deep Energy Retrofit with Major Building Renovation Projects in Europe, the United States, and China (PDF 1.25MB) 
2016 ASHRAE Winter Conference - Orlando
January 2016
Author(s): Alexander M. Zhivov, Richard Liesen, Rüdiger Lohse, and Ove C. Moerck
Numerous pilot projects conducted all over the world have demonstrated that energy use in commercial and public buildings can been reduced by more than 50% after renovation. In fact, some renovated buildings have met the Passive House Institute energy efficiency standard or have even achieved a net zero energy state(Zhivov etal.2015).Research(IEA2009;ASHRAE 2015) has identified more than 400 energy efficiency measures that can be used when buildings are retrofitted.

Guidelines on Business Models for DER (PDF 0.54MB) 
Deep Energy Retrofit of Buildings Forum 2016 - Washington DC
September 2015
Author(s): Rudiger Lohse

How to achieve Deep Energy Retrofit in a cost effective way? (PDF 4.84MB) 
Annex 61 Technical Day Workshop - St. Nikolai, Austria
September 2015
Author(s): Alexander Zhivov, Rüdiger Lohse

Social urban retrofit – the future of our energy bills (PDF 4.47MB) 
Annex 61 Technical Day Workshop - St. Nikolai, Austria
September 2015
Author(s): Reimar von Meding

Deep renovation with Passive House Windows of the newest generation - useful across the globe? (PDF 3.76MB) 
Annex 61 Technical Day Workshop - St. Nikolai, Austria
September 2015
Author(s): Franz Freundorfer

Different quality assurance concepts for Deep Energy Renovation, The Role of EPC (PDF 0.28MB) 
Annex 61 Technical Day Workshop - St. Nikolai, Austria
September 2015
Author(s): Klemens Leutgöb

Energy Demand of Office Buildings, Calculated and Measured Energy Performance (PDF 7.91MB) 
Annex 61 Technical Day Workshop - St. Nikolai, Austria
September 2015
Author(s): Gerhard Bayer

Energy Contracting Wiener Neustadt (PDF 11.45MB) 
Annex 61 Technical Day Workshop - St. Nikolai, Austria
September 2015
Author(s): Werner Kerschbaumer

Cost-efficient Building Energy Retrofit: The Case of Karlsruhe-Rintheim (PDF 30.13MB) 
Annex 61 Technical Day Workshop - St. Nikolai, Austria
September 2015
Author(s): R. Jank

Extending the Reach of Campus Renovation through Combined Financing (PDF 5.65MB) 
Energy Efficiency Exchange 2015 - Phoenix, Arizona
August 2015
Author(s): Phillip Smith, Dusty Wheeler

Deep Energy Retrofit Projects - Challenges /Legal Issues (PDF 0.57MB) 
Energy Efficiency Exchange 2015 - Phoenix, Arizona
August 2015
Author(s): Margaret Simmons

How to achieve Deep Energy Retrofit in a cost effective way? (PDF 7.14MB) 
Energy Efficiency Exchange 2015 - Phoenix, Arizona
August 2015
Author(s): Alexander Zhivov

Thermal Bridges and Deep Energy Retrofit (PDF 13.43MB) 
Energy Efficiency Exchange 2015 - Phoenix, Arizona
August 2015
Author(s): Axy Pagan-Vazquez

How to achieve Deep Energy Retrofit in a cost effective way? (PDF 7.76MB) 
Energy Efficiency Exchange 2015 - Phoenix, Arizona
August 2015
Author(s): Alexander Zhivov

IEA ECB Annex 61 Subtask C (PDF 0.59MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Cyrus Nasseri

Analysis of International Experiences from Case Studies with Deep Energy Retrofit (PDF 0.93MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Ove Mørck

Long-Term Performance of Super-Insulating Materials in Building Components & Systems (PDF 3.4MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Bijan A. Zarrabi

Thermal Renovation of Building Fabric using Modern Insulation Materials (PDF 5.63MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Chris Hall

EPSRC Retrofit 2050: Critical Factors for Successful Transition (PDF 2.37MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Tim Dixon

What can we learn from six years of deep retrofit innovation projects in the UK? (PDF 1.82MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Rick Holland

Accelerating the UK’s energy efficiency finance market - the role of the Investor Confidence Project (PDF 2.84MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Dave Worthington

Business and Technical Concepts of Deep Energy Retrofit of Public Buildings (PDF 3.39MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Alexander Zhivov, Rüdiger Lohse

Techno-Economic assessment of Potential for Energy savings (TEPE) (PDF 2.65MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Bahram Moshfegh, Linn Liu, Stig-Inge Gustafsson

Energy demand of office buildings (PDF 7.91MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Gerhard Bayer

Key Policy and Analysis to Drive Deep Energy Renovation (PDF 1.32MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Marc LaFrance

Building Renovation in EU to Achieve Energy and CO2 Reduction Targets (PDF 1.32MB) 
Annex 61 Technical Day Workshop - Reading, UK
April 2015
Author(s): Paul Ruyssevelt

Historic Net Zero Building Renovation: Wayne N. Aspinall Federal Building and US Courthouse (PDF 0.39MB) 
2015 ASHRAE Winter Conference - Chicago
January 2015
Author(s): Kinga Porst, Jason Sielcken, Ravi Maniktala, and Roger Chang
The $15 million high performing green modernization of the Wayne N. Aspinall Federal Building and the U.S. Courthouse in Grand Junction, CO, preserves the 41,562 square foot building's historic character, while transforming the landmark structure into one of the most energy efficient, sustainable historic buildings in the country.

Deep Energy Savings in Existing Buildings (PDF 3.4MB) 
2015 ASHRAE Winter Conference - Chicago
January 2015
Author(s): Alexi Miller, Cathy Higgins
Buildings use 40% of total energy consumed in the United States (EIA 2014). As Building energy codes have become stricter, new buildings and major retrofits have become significantly more efficient. However, a cutting-edge efficient building from a few decades ago is probably now a mile of the rod performer, and in another few decades will be inefficient compared with contemporary building stock.

Achieving Deeper Energy Savings in Federal Energy Performance Contracts (PDF 0.3MB) 
2015 ASHRAE Winter Conference - Chicago
January 2015
Author(s): John Shonder and Cyrus Nasseri
The Energy Independence and Security Act (EISA) of 2007 required each agency of the U.S. Federal Government to meet an annual schedule of targets for reduction in the aggregate site energy use intensity (EUI ) of its buildings with respect to it's 2003 baseline.

Extending the Reach of Campus Renovation Through Combined Financing (PDF 2.63MB) 
2015 ASHRAE Winter Conference - Chicago
January 2015
Author(s): Mark “Dusty” Wheeler, Phillip L. Smith, Eric James, and Luis Ayala
Federal government agencies are faced with significant budgetary challenges when trying to meet requirement for infrastructure renewal and mandates for increased energy efficiency. Much of the building stock owned and operated by the federal government is of the age where major renovation will be required to continue to meet the mission requirements.

First Experience in Extending the Reach of an Energy Concept through an Advanced ESPC Model (PDF 4.07MB) 
2015 ASHRAE Winter Conference - Chicago
January 2015
Author(s): Rudiger Lohse
Building age, increasing energy requirements, and scarcity of public funding are common conditions that motivate public authorities to search for new ways to maintain and refurbish their building stock.

Business and Technical Concepts for Deep Energy Retrofit of Public Buildings (PDF 3.34MB) 
2015 ASHRAE Winter Conference - Chicago
January 2015
Author(s): Alexander Zhivov, PhD Ruediger, Lohse John Shonder, Cyrus Nasseri, Heimo Staller, Ove Moerck, Marko Nokkala
Though the deep energy retrofit (DER) concept is currently used all over the world, there is no established global definition of this term. Since the worldwide energy crisis of the 1970s, energy requirements pertaining to new construction and building renovation have significantly improved. Since the 1980s, building energy-use requirements in the United States have improved by more than 50%. Table 1 and Table 2 list standards and requirements used to design and construct buildings pre-1980s and today. However, buildings and building systems degrade over time. They develop cracks in the building envelope and dirty and leaky ducts, and HVAC systems are not regularly commissioned, among other problems. This results in a reduction of energy performance of at least 10%. Therefore, it is technically feasible to reduce building energy use by more than 50%, using technologies readily available on the market, by simply adapting current minimum requirements for new buildings to refurbishment of building stock.

Investing in Energy Efficiency in Buildings: Why and How (PDF 4.86MB) 
2014 First Investor’s Day Conference - Brussels
November 2014
Author(s): Rüdiger Lohse
This report summarizes the presentations and the discussions held at the meeting. It is hoped that the information will be the starting point for deeper discussions between ESCOs, financiers, technical specialists, and building owners both within the government and in the private sector, on methods and processes to achieve a significant scale up of number and quality of DER projects.

Annex 61 Subtask C (PDF 0.55MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Cyrus Nasseri

Annex 61 Subtask B (PDF 0.27MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): John Shonder

Existing Case Studies (PDF 0.52MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014

Modeling Results from Estonia - ?Business and Technical Concepts of Deep Energy Retrofit of Public Buildings (PDF 0.39MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Kalle Kuusk, Targo Kalamees

Modeling Results from Canada - Energy Consumptions of Office Buildings (PDF 0.41MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Samir E. Chidiac

Core technologies bundle for deep energy retrofit and their characteristics optimization through modeling (PDF 0.41MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Heimo Staller

Optimization of Bundles of Core Energy Conservation Technologies for Deep Energy Retrofit (PDF 1.05MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Alexander Zhivov

Deep Energy Retrofit Guide (PDF 1.75MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Alexander Zhivov

EuroPHit Retrofitting for the energy revolution, one step at a time (PDF 1.06MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Oliver Ottinger, Berthold Kaufmann

Buildings in Estonian ENMAK 2030+ energy strategy – cost optimal energy savings (PDF 1.19MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Jarek Kurnitski

US DOE Perspective on Deep Energy Retrofits (PDF 1.15MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Cyrus Nasseri

Deep retrofitting via EPC (PDF 0.74MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Johan Coolen

Economic Feasibility of Deep Retrofit - A Financial Approach to Project Assessment and Development. Economic Model and Case Study (PDF 1.03MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Jan W. Bleyl

Approaches to Deep Energy Retrofits in the US Federal Government (PDF 0.79MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): John Shonder

Business and Technical Concepts of Deep Energy Retrofit of Public Buildings (PDF 3.19MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Alexander Zhivov, Rüdiger Lohse

Estonian long-term energy strategy (PDF 0.44MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Peep Siitam

Energy Efficient Building Envelopes Deep Energy Renovation Policy (PDF 1.33MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Marc LaFrance

Estonian Energy Targets for Building Renovation (PDF 0.29MB) 
Annex 61 Technical Day Workshop - Tallinn Estonia
September 2014
Author(s): Madis Laaniste

EPC- Project Experience From the Municipality of Halsnæs (PDF 2.17MB) 
Annex 61 Technical Day Workshop - Copenhagen, Denmark
March 2014
Author(s): Jens N. Jørgensen

New Business Model EPC Netherlands (PDF 3.29MB) 
Annex 61 Technical Day Workshop - Copenhagen, Denmark
March 2014
Author(s): Ger Kempen

Barriers and Solutions for Achieving Deep Energy Retrofits in Government Buildings (PDF 1.74MB) 
Annex 61 Technical Day Workshop - Copenhagen, Denmark
March 2014
Author(s): John Shonder, Marko Nokkala

IEA EBC Annex 61 Subtask B (PDF 1.53MB) 
Annex 61 Technical Day Workshop - Copenhagen, Denmark
March 2014
Author(s): John Shonder, Marko Nokkala

Market Survey of the ESCO Market in Germany (PDF 1.06MB) 
Annex 61 Technical Day Workshop - Copenhagen, Denmark
March 2014
Author(s): Friedrich Seefeldt

Legal Aspects of ESCO Business Models for Deep Energy Retrofit in Buildings and Communities (PDF 2.49MB) 
Annex 61 Technical Day Workshop - Copenhagen, Denmark
March 2014
Author(s): Andreas Christensten

Combining new buildings and deep retrofit at Stadtwerk Lehen (PDF 3.86MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
September 2013
Author(s): Helmut Strasser

Use of Low Exergy Systems for Building Renovations (PDF 8.29MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
September 2013
Author(s): Dietrich Schmidt

Development and Demonstration of Financial and Technical Concepts for Deep Energy Retrofits for Government/Public Buildings and Building Clusters (PDF 10.95MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
September 2013
Author(s): Berthold Kaufmann

Energy Audit and Retrofit Analysis at the EEB Hub (PDF 2.16MB) 
Annex 61 Technical Day Workshop - Darmstadt, Germany
September 2013
Author(s): Russell D. Taylor, Robert M. Leicht, Stella M. Oggianu