Do you know what a net-zero or net-positive home is?
A zero-energy building, also known as a zero net energy (ZNE) building, net-zero energy building , or net zero building, is a building with zero net energy consumption, meaning the total amount of energy used by the building on an annual basis is roughly equal to the amount of renewable energy created on the site. These buildings consequently do not increase the amount of greenhouse gases in the atmosphere. 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.
Once you know, you're going to want one for yourself. Ah, but now what does it take to build or find a net-zero energy home for sale? Here are some tips, you're going to enjoy about one of the most energy-efficient forms of housing available.
Most zero net energy buildings get half or more of their energy from the grid, and return the same amount at other times. Buildings that produce a surplus of energy over the year may be called "energy-plus buildings" and buildings that consume slightly more energy than they produce are called "near-zero energy buildings" or "ultra-low energy houses".
How Does a Home Reach Net Zero or Net Positive?
Net-zero homes achieve their energy efficiency by working from the very start with this goal in mind. There are two sides to this equation — the home design must be as energy efficient as possible so they require less energy and then it must maximize the use of on-site energy sources such as solar, wind, and geothermal so they produce enough energy to power the home on their own, achieving a net zero in-take of grid energy.
While energy efficiency and renewable energy are the main components, working from a holistic design is principle to achieving a net zero or often called a zero energy home. This is accomplished by working with the site, the climate, and taking advantage of renewable energy sources. This is why net-zero homes are typically newly built, not retrofitted. Although building materials and systems are extremely important to achieving zero energy, beginning with a smart design can be paramount to a successful outcome.
Many homes begin with the passive design model. Passive design utilizes the climate and surroundings of a home to ensure that the energy needs are very limited. For example, a home may be designed with awnings that shade the high sun in the summer helping to reduce energy required for cooling and at the same time using solar for natural day-light heating and air flow for cooling can greatly reduce the need for systems to achieve a comfortable home climate.
All "off-grid" homes are net zero, but net zero encompasses a larger category, since zero energy homes are typically attached to the energy grid. There may be times that a net zero home pulls more energy from the grid than it is producing, although it will make the difference up during periods of lower energy use.
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How Do I Get a Net-Zero Home?
Zero-energy homes can be found in new developments such as SpringLeaf in Boulder, Colorado, and in Fontana, California, where Meritage Homes is building California's First Net-Zero Neighborhood called Sierra Crest. Zero energy homes can built on site by design and build companies such as Bright Build, Zeta
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Viva Green Homes makes it easy to find net zero homes for sale across the country. In fact with our advanced search page you can find net zero homes with a check on a single box and many other types of energy efficient and eco-friendly homes like LEED certified, Energy Star certified, solar or geothermal powered and so on.
The net zero concept is applicable to a wide range of resources due to the many options for producing and conserving resources in buildings (e.g. energy, water, waste). Energy is the first resource to be targeted because it is highly managed, expected to continually become more efficient, and the ability to distribute and allocate it will improve disaster resiliency.
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