This book describes results of research conducted 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 book is 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. The book contains description and analysis of 26 well-documented case studies from Europe (Austria, Denmark, Estonia, Germany, Ireland, Latvia, Montenegro, The Netherlands, and the UK) and the USA. 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. Deep Energy Retrofit (DER) is a major building renovation project in which site energy use intensity (including plug loads) has been reduced by at least 50% from the pre-renovation baseline with a corresponding improvement in indoor environmental quality and comfort. Lessons learned from the case studies and experiences of the team clearly indicate that DER can be achieved with the application of “bundles” of a limited number of core technologies readily available on the market. Specific characteristics of some of these core technology bundles generally 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 [LCC] analysis).

In order to meet UK Carbon reduction commitments for 2020 and 2050 building owners will be required to upgrade their buildings to meet an increasingly stringent set of energy performance requirements. In the absence of any clear advice from UK Government on how this can be achieved, the EnerPHit standard offers a very clear methodology. This is a practical guide that gives architects the tools to retrofit buildings to the highest EnerPHit standard. It equips the reader with the key information on EnerPHit (as the most effective benchmark for performance), the practical know-how and tips to ensure effective retrofit throughout all Plan of Work stages of a project to the EnerPHit standard. Backed with real-life case studies, it enables you to understand how to achieve successful outcomes tailored to suit available budgets and programmes.

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. High levels of energy use reduction using core technology bundles along with improvements in indoor climate and thermal comfort can be only achieved when a Deep Energy Retrofit adopts a quality assurance process. In addition to design, construction, commissioning, and post-occupancy phases of the quality assurance process, the Guide emphasizes the importance of clearly and concisely formulating and documenting the Owner’s goals, expectations, and requirements for the renovated building during development of the statement of work. Another important component of the quality assurance process is a procurement phase, during which bidders’ qualifications, their understanding of the scope of work and its requirements, and their previous experience are analyzed. The building sector holds the potential for tremendous improvements in terms of energy efficiency and reducing carbon emissions, and energy retrofits to the existing building stock represent a significant opportunity in the transition to a low-carbon future. Moreover, investing in highly efficient building materials and systems can replace long-term energy imports, contribute to cost cutting, and create a wealth of new jobs. Yet, while the technologies needed in order to improve energy efficiency are readily available, significant progress has not yet been made, and “best practices” for implementing building technologies and renewable energy sources are still relegated to small “niche” applications. Offering essential information on Deep Energy Retrofits, the book offers a valuable asset for architects, public authorities, project developers, and engineers alike.

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. The building sector holds the potential for tremendous improvements in terms of energy efficiency and reducing carbon emissions, and energy retrofits to the existing building stock represent a significant opportunity in the transition to a low-carbon future. Moreover, investing in highly efficient building materials and systems can replace long-term energy imports, contribute to cost cutting, and create a wealth of new jobs. Yet, while the technologies needed in order to improve energy efficiency are readily available, significant progress has not yet been made, and “best practices” for implementing building technologies and renewable energy sources are still relegated to small “niche” applications. Offering essential information on Deep Energy Retrofits, the book offers a valuable asset for architects, public authorities, project developers, and engineers alike.

Your building has the potential to change the world. Existing buildings consume approximately 40 percent of the energy and emit nearly half of the carbon dioxide in the US each year. In recognition of the significant contribution of buildings to climate change, the idea of building green has become increasingly popular. But is it enough? If an energy-efficient building is new construction, it may take 10 to 80 years to overcome the climate change impacts of the building process. New buildings are sexy, but few realize the value in existing buildings and how easy it is to get to “zero energy” or low-energy consumption through deep energy retrofits. Existing buildings can and should be retrofit to reduce environmental impacts that contribute to climate change, while improving human health and productivity for building occupants. In The Power of Existing Buildings, academic sustainability expert Robert Sroufe, and construction and building experts Craig Stevenson and Beth Eckenrode, explain how to realize the potential of existing buildings and make them perform like new. This step-by-step guide will help readers to: understand where to start a project; develop financial models and realize costs savings; assemble an expert team; and align goals with numerous sustainability programs. The Power of Existing Buildings will challenge you to rethink spaces where people work and play, while determining how existing buildings can save the world. The insights and practical experience of Sroufe, Stevenson, and Eckenrode, along with the project case study examples, provide new insights on investing in existing buildings for building owners, engineers, occupants, architects, and real estate and construction professionals. The Power of Existing Buildings helps decision-makers move beyond incremental changes to holistic, results-oriented solutions.

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 (EBC Annex 61 2017a, Hermelink and Müller 2010; NBI 2014; RICS 2013; Shonder and Nasseri 2015; Miller and Higgins 2015; Emmerich et al. 2011). Building energy efficiency (EE) ranks first in approaches with resource efficiency potential with a total resource benefit of approximately $700 billion until 2030. EE is by far the cheapest way to cut CO2 emissions (McKinsey 2011, IPCC 2007). However, according to an IEA study (IEA 2014a), more than 80% of savings potential in building sector remains untapped. Thus, the share of deployed EE in the building sector is lower than in the Industry, Transport, and Energy generation sectors. Estimates for the deep renovation potentials show: €600-900bn investment potential, €1000-1300bn savings potential, 70% energy-saving potential, and 90% CO2 reduction potential.

Managing a major remodel of your home involves learning various aspects of a construction project: permitting; hiring contractors; clarifying what you really mean and want; managing a budget; overseeing quality, avoiding regrets; doing what’s right for yourself and standing up for yourself. It’s a big job. The learning curve is high and often we homeowners don’t get to apply the skills we learned again. In this book, the stories of a couple going through this learning curve is told through the lens of a novice just like a conversation with a homeowner over a cup of tea. What they thought they wanted (a brand new house in modern minimalist style with solar panels and recycled materials) is very different than what they ended up with (remodel of a 90-year-old house in the classic Arts and Crafts style to meet the stringent international building standard called Passive House). What caused this shift? How did they choose the contractor? How did they navigate out of overwhelm of green building choices? How did they manage the relationships? What would they do differently? Was it worth it? This book chronicles the journey by a couple from choosing the location through living in the house after the renovation completion. It wasn’t all about finding smart people and following expert guidance. When expert opinions diverged and they got stuck in analysis paralysis they had to trust their judgment and chose what they felt was right for them. After all, they’ll be living in the house for years after the experts are gone. Reviews for MIDORI HAUS: "Chie Kawahara is a storyteller. Her book, Midori Haus, tells a compelling story in a conversational style about a couple who wanted to remodel an older home that would use as little energy as possible—and was comfortable and healthy to live in. Anyone who has an interest in green building—doing right for oneself and the planet—will find a friend in this book." -Jim Gunshinan, Editor, Home Energy Magazine “Midori Haus serves as a journey of adapting, learning, greening, nurturing, and caring for an old house by renewing the house to address current and future environmental challenges. The narrative is delightfully educational – the design process of achieving the passive house standard will be better understood through these stories and conversations.” -Alison G. Kwok, Ph.D., AIA, CPHC, University of Oregon "The international Passive House standard has gained a deserved reputation as the fastest growing building energy efficiency standard in the world. Unsurprisingly, publications about it have mostly been by and for industry professionals. Midori Haus represents an alternative, introducing readers to Passive House through the eyes of a homeowner undertaking a remodeling project. Chie Kawahara takes readers along on her journey of discovery and remodeling triumph. She makes the process understandable and accessible and readers are given practical tools they can use on their own Passive House projects. There's nothing like a good case study told by the people involved to bring abstract concepts to life. Midori Haus doesn't disappoint." -Elrond Burrell, Architect, CPHD, blogger "In this delightful book, Chie Kawahara describes the process she and her husband went through to purchase a 1920s bungalow and turn it into a state-of- the-art, healthy, green, Passive House. This account of their experiences is highly instructional for anyone considering buying and renovating a house, and it’s a wonderful read!" -Alex Wilson, Founder, BuildingGreen, Inc.