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Reports

6 result(s) found

Towards Nearly Zero Energy Buildings in Europe: A Focus on Retrofit in Non-Residential Buildings

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English
Authors:
Delia D’Agostino,
Paolo Zangheri,
Luca Castellazzi

Buildings are the focus of European (EU) policies aimed at a sustainable and competitive low-carbon economy by 2020. Reducing energy consumption of existing buildings and achieving nearly zero energy buildings (NZEBs) are the core of the Energy Efficiency Directive (EED) and the recast of the Energy Performance of Building Directive (EPBD). To comply with these requirements, Member States have to adopt actions to exploit energy savings from the building sector.

Policy strategies for achieving large long-term savings from retrofitting existing buildings

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English
Authors:
Carine Sebi,
Steven Nadel,
Barbara Schlomann,
Jan Steinbach

In order to achieve long-term targets for energy savings and emission reductions, substantial savings will be needed from existing buildings. For example, a recent analysis for the USA examines aggressive strategies to cut carbon emissions in half by 2040 and finds that in order to achieve this emission reduction target, more than half of existing buildings will need comprehensive energy efficiency retrofits. Germany is targeting an overall primary energy consumption reduction of 50% in 2050 including increasing building renovation rate to 2% per year.

The Macroeconomic and Other Benefits of Energy Efficiency

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English
Authors:
Eva Alexandri,
Piet Boonekamp,
Unnada Chewpreecha,
Antonio De Rose,
Roel Drost,
Laurent Estourgie,
Cyrus Farhangi,
Daniël Funcke,
Sanna Markkanen,
Guido Moret,
Hector Pollitt,
Caroline Rodenburg,
Felix Suerkemper,
Sacha Tensen,
Perrine Theillard,
Johannes Thema,
Paul Vethman,
Florin Vondung,
Monique Voogt

This report sets out the positive and negative impacts of improvements in energy efficiency in buildings that could come about through a recast of the Energy Performance Buildings Directive (EPBD). Successive studies have shown that energy efficiency offers many of the most cost-effective options for meeting global emission targets. In many cases, energy efficiency measures have been shown to be ‘negative cost’, meaning that it would be economically advantageous to implement them.

How to reduce household carbon emissions: A review of experience and policy design considerations

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English
Authors:
Xiaoling Zhang,
Yue Wang

Global warming and environment problems caused by the excessive emission of greenhouse gases (GHGs), along with rapid economic development has attracted the attention of many countries and regions of the world. Reducing GHG emissions is essential to mitigate the threat of global warming. Household carbon (dioxide) emissions have been recognized as one of the most important contributors to climate change, with a significant impact on both the local and global environment, and various policy instruments have been implemented by governments to bring about the reduction.

Cost effectiveness assessment and beyond: A study on energy efficiency interventions in Greek residential building stock

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English
Authors:
Platon Pallis,
Nikolaos Gkonis,
Efstratios Varvagiannis,
Konstantinos Braimakis,
Sotirios Karellas,
Miltiadis Katsaros,
Panagiotis Vourliotis

Nearly zero energy buildings (NZEBs) constitute one of the main pillars of the energy policy of European Union (EU). Greece has recently established a clear definition for NZEB, however the interdependence between cost-optimality and the energy performance of NZEB has not been adequately studied. The present work includes a cost effectiveness analysis among different energy efficiency interventions for the existing residential Greek building stock.

A review of net zero energy buildings in hot and humid climates: Experience learned from 34 case study buildings

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English
Authors:
Wei Feng,
Qianning Zhang,
Hui Jia,
Ran Wang,
Nan Zhou,
Qing Ye,
Bin Hao,
Yutong Li,
Duo Luo,
Stephen Siu Yu Lau

Sustainable development in the building sector requires the integration of energy efficiency and renewable energy utilization in buildings. In recent years, the concept of net zero energy buildings (NZEBs) has become a potential plausible solution to improve efficiency and reduce energy consumption in buildings. To achieve an NZEB goal, building systems and design strategies must be integrated and optimized based on local climatic conditions. This paper provides a comprehensive review of NZEBs and their current development in hot and humid regions.

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