The city of Bad Homburg is doing a lot with renewable energies. The town itself has had many systems built. The city helps homeowners with advice.
People use the sun here too. They use the sun for energy. This is possible with solar thermal energy or photovoltaics. This technology is good. It is also often cheap. There are two technologies: solar thermal systems (solar thermal energy) and photovoltaic systems.
Many people have solar panels on their homes. The town of Bad Homburg also has solar installations.
The Hesse solar register shows you whether your roof is suitable for a solar system. You can also calculate for yourself whether a solar installation is worthwhile.
You can find the solar register of the Hesse State Energy Agency here:
Solar cadastre of the Hesse State Energy Agency(https://www.lea-hessen.de/buergerinnen-und-buerger/sonnenenergie-nutzen/solar-kataster-hessen/)
You select your roof. You can then see how much electricity a solar system can generate. These results are an initial estimate. They are no substitute for precise planning by experts.
The city of Bad Homburg says: Go to the city's energy advisory service. Sometimes roofs are suitable for solar systems, even if the solar cadastre shows otherwise.
Energy advice Bad Homburg(https://www.bad-homburg.de/de/stadt/umwelt-und-klima/umwelt-und-klimaschutz/energieberatung)
Part of the sunlight is used. Collectors on the roof heat a liquid. The liquid heats the water in the storage tank. This means that less energy is needed from other sources. There are two types of collectors. They differ in terms of technology, efficiency and cost. There are flat-plate collectors and vacuum tube collectors.
A family of four needs hot water. Flat-plate collectors require an area of around 4 to 6 square meters. Vacuum tube collectors require a smaller area of around 3 to 4.5 square meters. The costs with installation are a lot of money. Flat-plate collectors cost around 4,500 to 6,000 euros. Tube collectors cost around 6,000 to 8,000 euros. The annual coverage rate should cover much of the energy requirement for hot water. This saves a lot of natural gas or heating oil. You can also save a lot of CO2 each year.
More and more people are using these systems for heating.
More space is needed for heating. The hot water tank has to be larger. The costs are higher. But you can also save more. You need a lot of space for flat-plate collectors. You also need a lot of space for vacuum tube collectors. The heating cylinder must hold a lot of water. You save energy for hot water. You also save heating energy. This saves a lot of natural gas or heating oil. This also saves a lot of CO2 per year. The costs are high for flat collectors. The costs are also high for vacuum tube collectors. The city of Bad Homburg and the federal government give money for the installation.
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Photovoltaic systems use solar energy. The sun shines on collectors. The collectors generate electricity. There are different modules. The modules vary in price. They also have different outputs. Modules made from monocrystalline solar cells are expensive. They have a lot of power. They are good for small roofs. Polycrystalline solar cells have less output. They are good for larger roofs. The modules must face the sun.
Thin-film modules are light. They are cheap. They have low output. Thin-film modules are good for large roofs. You can install many modules on large roofs. Thin-film modules also work in low light. They also work at high temperatures. They can be installed on less well-aligned surfaces.
Single-family houses often have polycrystalline modules. These modules have an output of little to a lot. The modules cost a lot of money. Prices are slowly falling. That was in January 2011. Monocrystalline modules cost more. Thin-film modules cost less.
The state is promoting the installation of solar systems. It does this with a feed-in tariff. You can feed the electricity into the grid. You can also use the electricity yourself. If you use a lot of solar power yourself, you get more money. The feed-in tariff gives you more money for the electricity you use yourself. This makes your system more economical. You should bear this in mind when planning. Many households with photovoltaic systems produce as much electricity as they consume. This is good for the environment.
