![]() ![]() Hence reducing energy use can save the building owner money. Energy, particularly electricity and heating fuel like natural gas or heating oil, is expensive.Integration of plug-in electric vehicles – called vehicle-to-gridĪlthough the net zero concept is applicable to a wide range of resources, water and waste, energy is usually the first resource to be targeted because:.Integration of renewable energy resources.Some advantages of these buildings are as follows: ![]() Zero-energy buildings can be part of a smart grid. These innovations have also been significantly improved by academic research, which collects precise energy performance data on traditional and experimental buildings and provides performance parameters for advanced computer models to predict the efficacy of engineering designs. These include highly insulating spray-foam insulation, high-efficiency solar panels, high-efficiency heat pumps and highly insulating, low emissivity, triple and quadruple-glazed windows. ![]() The development of modern zero-energy buildings became possible largely through the progress made in new energy and construction technologies and techniques. The zero-energy goal is becoming more practical as the costs of alternative energy technologies decrease and the costs of traditional fossil fuels increase. These buildings produce energy onsite using renewable technology like solar and wind, while reducing the overall use of energy with highly efficient lightning and heating, ventilation and air conditioning (HVAC) technologies. The buildings are called "energy-plus buildings" or in some cases "low energy houses". Most zero-energy buildings use the electrical grid for energy storage but some are independent of the grid and some include energy storage onsite. Although zero-energy buildings remain limited, even in developed countries, they are gaining importance and popularity. To combat such high energy usage, more and more buildings are starting to implement the carbon neutrality principle, which is viewed as a means to reduce carbon emissions and reduce dependence on fossil fuels. Typical code-compliant buildings consume 40% of the total fossil fuel energy in the US and European Union and are significant contributors of greenhouse gases. 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 new buildings in the region under nZEB standards by 2020. The International Energy Agency (IEA) and European Union (EU) most commonly use "Net Zero Energy", with the term "zero net" being mainly used in the USA. 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 development of zero-energy buildings is encouraged by the desire to have less of an impact on the environment, and their expansion is encouraged by tax breaks and savings on energy costs which make zero-energy buildings financially viable. 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. The goal is that these buildings contribute less overall greenhouse gas to the atmosphere during operations than similar non-ZNE buildings. A Zero-Energy Building (ZEB), also known as a Net Zero-Energy (NZE) 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. ![]()
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