The demand of zero-energy smart homes is increasing because it generates as much energy as the home consumes in a year with renewable sources. 

FREMONT, CA: A zero-energy home's purpose is to develop as much energy as the home consumes in a year through renewable sources. It leaves net-zero utility bills for the occupants. Homes with zero energy are not super-modern or odd-looking. They can walk right through a home with zero energy and never know it. It requires careful preparation, some advanced building techniques, and installing suitable energy-efficient equipment and appliances in the house to make them super energy efficient.

A grid-based solar photovoltaic system for producing electricity with a utility provider promoting net metering is one of the primary ingredients in a zero-energy home. It does not matter if the home utilizes stand-alone solar panels (ground-mounted or roof-mounted) or the latest solar panel designs that appear more like traditional shingles.

Net metering is essential because it is possible to sell excess energy generated during the day by the solar system back to the utility provider. It can even be utilized in winter when the days are shorter and the sun is lower in the sky because, during such times, the production of electricity is less.

The best-known solar shingle solution is Tesla's Solar Roof, but it's not the only one. CertainTeed, Luma Solar Roof, and SunTegra are some of the other producers. The selection between solar panels and solar shingles can be based on the expense and home aesthetics. There is also the option of building a home that is zero-energy-ready. In this scenario, a zero-energy house is constructed except for installing a solar-generating device. It will save a lot of money during the initial stage of making the building. The homeowner can install the solar-generating system when the financial condition permits.

Although any homeowner can make investments in their home to reduce the energy used, converting an existing home into a zero-energy home will be very difficult. Zero-energy homes are built from scratch to achieve the target of a net-zero energy bill. It starts by choosing a home-site that enables solar and passive solar heating for the uninterrupted sun.

But a site that offers passive solar heating with plenty of sunlight in the winter will also need higher energy consumption in the summer to keep the home cool. Therefore, the design requires features like awnings and deciduous trees to block direct sunlight during the summer. Compared with evergreens, deciduous trees (oak, maple, etc.) lose their leaves in the winter, enabling the sun to penetrate a home's passive solar heating components. The leaves of the trees block the sun during summer. Awnings for a zero-energy home are explicitly built during the summer to block the sun when it is higher in the sky and enable the sun to enter the house during the winter when it is lower in the sky.

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