An autonomous building is a building designed to be operated independently from infrastructural support services such as the electric power grid, gas grid, municipal water systems, sewage treatment systems, storm drains, communication services, and in some cases, public roads.
In passive solar building design, windows, walls, and floors are made to collect, store, reflect, and distribute solar energy, in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.
Green building refers to both a structure and the application of processes that are environmentally responsible and resource-efficient throughout a building's life-cycle: from planning to design, construction, operation, maintenance, renovation, and demolition. This requires close cooperation of the contractor, the architects, the engineers, and the client at all project stages. The Green Building practice expands and complements the classical building design concerns of economy, utility, durability, and comfort. In doing so, the three dimensions of sustainability, i.e., planet, people and profit across the entire supply chain need to be considered.
A low-energy house is characterized by an energy-efficient design and technical features which enable it to provide high living standards and comfort with low energy consumption and carbon emissions. Traditional heating and active cooling systems are absent, or their use is secondary. Low-energy buildings may be viewed as examples of sustainable architecture. Low-energy houses often have active and passive solar building design and components, which reduce the house's energy consumption and minimally impact the resident's lifestyle. Throughout the world, companies and non-profit organizations provide guidelines and issue certifications to guarantee the energy performance of buildings and their processes and materials. Certifications include passive house, BBC - Bâtiment Basse Consommation - Effinergie (France), zero-carbon house (UK), and Minergie (Switzerland).
An energy-plus building produces more energy from renewable energy sources, over the course of a year, than it imports from external sources. This is achieved using a combination of microgeneration technology and low-energy building techniques, such as: passive solar building design, insulation and careful site selection and placement. A reduction of modern conveniences can also contribute to energy savings, however many energy-plus houses are almost indistinguishable from a traditional home, preferring instead to use highly energy-efficient appliances, fixtures, etc., throughout the house.
Passive house is a voluntary standard for energy efficiency in a building, which reduces the building's ecological footprint. It results in ultra-low energy buildings that require little energy for space heating or cooling. A similar standard, MINERGIE-P, is used in Switzerland. The standard is not confined to residential properties; several office buildings, schools, kindergartens and a supermarket have also been constructed to the standard. Passive design is not an attachment or supplement to architectural design, but a design process that integrates with architectural design. Although it is principally applied to new buildings, it has also been used for refurbishments.
Sustainable architecture is architecture that seeks to minimize the negative environmental impact of buildings by efficiency and moderation in the use of materials, energy, development space and the ecosystem at large. Sustainable architecture uses a conscious approach to energy and ecological conservation in the design of the built environment.
A Zero Energy Building (ZEB), also known as a Net Zero Energy (NZE) building, or a Zero Net Energy (ZNE) building, is a building with net zero energy consumption, meaning the total amount of energy used by the building on an annual basis is equal to the amount of renewable energy created on the site or in other definitions by renewable energy sources offsite, using technology such as heat pumps, high efficiency windows and insulation, and solar panels. The goal is that these buildings contribute less overall greenhouse gas to the atmosphere during operations than similar non-ZNE buildings. They do at times consume non-renewable energy and produce greenhouse gases, but at other times reduce energy consumption and greenhouse gas production elsewhere by the same amount. Zero-energy buildings are not only driven by a want to have less of an impact on the environment, but they are also driven by money. Tax breaks as well as savings on energy costs make Zero-energy buildings financially viable. A similar concept approved and implemented by the European Union and other agreeing countries is nearly Zero Energy Building (nZEB), with the goal of having all buildings in the region under nZEB standards by 2020. Terminology tends to vary between countries, agencies, cities, towns and reports, so a general knowledge of this concept and its various employments is essential for a versatile understanding of clean energy and renewables. The IEA and European Union most commonly use Net Zero Energy, with "zero net" mainly used in the USA.
The Association for Environment Conscious Building (AECB) is the leading network for sustainable building professionals in the United Kingdom. Membership of the AECB includes local authorities, housing associations, builders, architects, designers, consultants and manufacturers. The association was founded in 1989 to increase awareness within the construction industry of the need to respect, protect, preserve and enhance the environment and to develop, share and promote best practice in environmentally sustainable building.
The 2000-watt society is an environmental vision, first introduced in 1998 by the Swiss Federal Institute of Technology in Zürich, which pictures the average First World citizen reducing their overall average primary energy usage rate to no more than 2,000 watts by the year 2050, without lowering their standard of living.
Efficient energy use, sometimes simply called energy efficiency, is the goal to reduce the amount of energy required to provide products and services and can also reduce effects of air pollution. For example, insulating a building allows it to use less heating and cooling energy to achieve and maintain a thermal comfort. Installing light-emitting diode bulbs, fluorescent lighting, or natural skylight windows reduces the amount of energy required to attain the same level of illumination compared to using traditional incandescent light bulbs. Improvements in energy efficiency are generally achieved by adopting a more efficient technology or production process or by application of commonly accepted methods to reduce energy losses.
The passive solar design of buildings includes consideration of their orientation to the sun and their thermal mass, factors which have been incorporated to a greater or lesser extent in vernacular architecture for thousands of years. Ancient Greeks, Romans, and Chinese were the first to refine and develop the basic principles of passive solar design, but European technological advances were largely abandoned after the Fall of Rome. It was not until the 20th century that interest in the principles of passive solar design had a resurgence in Europe and the U.S.A., with architects such as George F. Keck and Frank Lloyd Wright. In the 21st century, worldwide endeavours to reduce power consumption have kept the interest in passive solar technology alive.
German developments that employ green building techniques include:
Richard Steven "Dick" Levine is an American environmental architect, solar energy and sustainability pioneer, and professor at the University of Kentucky. He is one of the early solar energy innovators in the U.S., a holder of U.S. patents on structural systems and solar energy applications, and the architect of a number of award winning solar buildings including his widely published Raven Run Solar House (1974). Levine is co-director of the Center for Sustainable Cities at the University of Kentucky. His contributions to sustainable urban planning are in both the theory and practice of the sustainable city-region. He has over 150 publications on solar energy and sustainability research, conducted in Italy, Austria, China and the Middle East.
Founded in 1984, Maine Coast Waldorf School serves some 295 students from early childhood through high school. The campus in Freeport, Maine, United States, provides students with beautifully designed buildings and acres of outdoor classrooms and woodland trails. Maine Coast Waldorf School fosters independent thinking, creative problem solving, and a sense of connection to equip students for future challenges, while inspiring them to create their own opportunities.
Vauban is a neighbourhood to the south of the town centre in Freiburg, Germany. It was built as "a sustainable model district" on the site of a former French military base named after Sébastien Le Prestre de Vauban, the 17th century French Marshal who built fortifications in Freiburg while the region was under French rule. Construction began in 1998, and the first two residents arrived in 2001.
Justin Bere is a British architect based in London. He is founder of his own practice bere:architects and has developed a specialism in low energy passive house (Passivhaus) buildings, resulting in the first certified passive house building in London in 2010. In 2012 he was named one of the most influential people in UK sustainability by Building Design magazine.
Zero-heating building or nearly zero-heating building (nZHB) is a building having essentially zero heating demand, defined as having heating demand, Q’NH, less than 3 kWh/(m2a). The zero-heating building is intended for use in heating-dominated areas. The purpose of the zero-heating building is to supersede net-zero energy buildings as a way to bring building-related greenhouse gas emissions to zero in the EU. Zero-heating buildings address flawed net-zero energy buildings: the requirement for seasonal energy storage, in some cases poor comfort of living and narrow design options.
