What can I use for natural energy
Renewable energies for the home - what options are there?
In contrast to fossil fuels, renewable energies for the home have a decisive advantage: The range of resources required for this is almost infinite - this is why we also speak of renewable energy. Private households can also take advantage of this advantage. We will show you what options you have to operate your home in an energy self-sufficient manner.
Solar energy - solar radiation for electricity and heat
Solar energy is the energy of solar radiation. The earth's surface receives around 240 watts / m² - this free and freely available solar energy can be used technically.
With a photovoltaic system on the roof, electrical energy can be generated from solar radiation. This means that electrical devices such as cookers, refrigerators, etc. can be operated independently of the mains. So that you have enough energy available at night, you should get a solar power storage. On a smaller scale, you can also use individual electrical equipment with an integrated solar module and battery, such as lights. The garage lighting is ideal for benefiting from solar energy.
(© hbruellmann / pixabay.com)
In addition, you can make use of the solar thermal process at home. These collectors are also installed on the roof of the house and, thanks to their black color, attract the sun's rays. The buffer store stores the heat so that even after several days without the sun, you have the option of taking a warm shower or turning on the heating.
If private households produce more electricity than they consume, the surplus energy can be fed into the public power grid for financial compensation - this applies in principle to all forms of renewable energy.
Heat pump - ambient heat from the ground, ambient air and groundwater
It is technically possible to let the ambient heat of the environment as well as geothermal energy flow into the domestic heating system up to a depth of 400 meters.
The heat pump makes it possible: it works like a refrigerator, only the other way round and much more efficiently. Judging by the increasing sales figures for heating heat pumps, this form of green energy for your own four walls is on the advance.
Wind turbine - wind as a source of energy
Another way to use renewable energies for your home is the wind. Unlike the mechanical mill in the past, thanks to ongoing process optimization, it is now even possible to convert wind energy into electricity. The principle is as follows:
the wind power or the kinetic energy lead to rotational movements of the rotor blades.
the rotor blades set the turbine rotor in motion
the system rotor transfers the rotational energy to a generator
the wind generator generates electricity
When you think of the wind power plant, one immediately thinks of the huge plants in the fields, but it can also be smaller. Micro wind systems, for example, have a width in the range of 130 cm and are ideally suited for the home.
(© Joenomias / pixabay.com)
When choosing a location, you should consider two aspects in order to fully exploit the energy potential:
choose a location with strong winds (the house roof or wind turbine with mast)
the aisle of the main wind direction should not be blocked by objects
Exotic hydropower plant - a lot of effort but continuous energy production
Small or mini hydropower plants consist of rotors that are set in motion by flowing water. Electricity can be generated from this torque.
To operate your own hydropower plant, certain requirements must be met:
The suitability of the location - your own garden must have a river or stream
- The water has to provide enough power to be economically viable
Sufficient capital to cope with the high acquisition costs
Invasion of nature - permit and environmental impact assessment required
In contrast to solar energy, the advantage of a private hydropower plant is that it is not dependent on the weather. Electricity can be produced continuously, so that the investment costs are amortized over time.
Tip: KfW Bank offers various promotional products for investments in renewable energies.
Energy from eco providers
For those who are environmentally conscious and who, for a variety of reasons, cannot or do not want to produce “their own” energy at home, purchasing energy from eco-providers is ideal.
Of course, a good eco supplier does not supply electricity from coal or nuclear power. When choosing the right provider, you should make sure that the electricity is not generated from these same energy sources.
Info:According to Statista, the share of renewable energies in net electricity generation was 40.4% in 2018. Of the renewable energy sources, wind energy forms the largest item with 20.4%.
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