Solar Power System for a Family Home

Solar systems allow homeowners to do good for the environment and also become independent from rising electricity costs. Since the feed-in rate has been cut several times, more and more people are focusing on their consumption. In the long term, those who produce their solar power can reduce their electricity bills by using a battery with a solar supply. Modern solar storage systems combined with intelligent management are able to cover 80 percent of the self-consumption.

How does electricity get into the socket?

Solar modules are the central component of a single-family home solar system. The solar modules convert the sun’s energy into electricity. The modules in single-family houses are constantly exposed to the weather and other environmental factors, making regular cleaning and maintenance essential. When it comes to performance and lifespan, the quality of solar modules is what counts. Please read our article about solar system testing.

The power converter is a very important component. The power inverter converts the direct current generated into alternating current. The electricity can then be used directly, stored, or fed into the grid. A system of energy management allows production and consumption to be individually managed. When the solar storage is full, the excess energy is fed back into the grid. Grid operators can provide more power if needed. Find out more in the article “How a solar system works.”

The Correct Size Of Solar Modules

When planning, it is important to consider the following factors: Planning is based on the following factors:

• Roof area
• Wanted yield
• Size and number of solar panels

Calculate the roofable area. The construction plan is the fastest way to do this. You can measure the area by yourself if this plan is not available. For this purpose, you are recommended to borrow laser measuring devices from DIY stores. A company that specializes in installation can also be hired to do the measurements. The number of solar panels that can be installed is easily calculated once the roof space has been determined. This can be used to calculate the maximum output in kilowatts (kW).

The average annual consumption of a family of four is 4,000 kWh. Per kWp, in this country, you can produce between 800 and 950kWh. For one kWp, a roof area between 8 and 10 m2 will be required. Five solar modules, each with a one kW output, would be needed to meet the energy requirement of 4,000 kWh. An area of 50 m2 would be required for five solar modules.

Cost of a solar system for a single-family house

The cost of a solar system is composed of many factors. The material costs of solar modules, inverters, and mounting systems, as well as the other components, make up around 85 percent. Installation costs make up the remaining 15%.

The cost of buying a single-family home can vary from 5,000 to 15,000. Self-consumption becomes more attractive due to the declining feed-in rates. A solar system that produces five kWp is typically enough to cover all the electricity needs of a single-family home. There are many options for homeowners in several states to invest in renewable energies. For example, in Florida, there are Solar Loans, PACE, and PPAs. The options for solar financing available in South Florida were designed to help more people invest in renewable energy.

Cost of solar panels for the house

Solar modules are the most expensive part of materials. The modules are combined to form solar Generators that generate electricity using solar radiation. The different types of modules include thin-film, monocrystalline, and polycrystalline, each with its special characteristics. Prices vary from 1 Euro to 1.45 Euros per peak watt, depending on supplier and model. This means that for a home with a five kW power output, between 5,000 and 7,250 euro are due to purchase the modules.

Inverter Costs

An inverter must be used to make the electricity usable. The inverter converts direct current generated into alternating current. The electricity generated can be used for household appliances, and any excess can be fed back into the grid. Solar inverters cost between 400 and 2000 euros, or about 10% of the total purchase price.

Costs for the installation of a solar system in a single-family house

Installation costs are between 120 and 180 euros for each kWp installed. It is slightly more expensive for flat roofs at around 250 euros per unit of kWp. A professional company must do the installation. The modules will be secured in a stormproof way, and the connections will be wired correctly. The installation costs of a solar system for a single-family house with five kWp are between 600 and 900 euros.

Costs for an Optional Electricity Storage System

Many homeowners also choose to install an energy storage system. This will increase self-consumption, which in turn results in a reduced electricity bill. The electricity bill will be lower because less energy is needed to purchase at high prices. The cost of an electricity storage unit is still currently between 6,000 to 15,000 euros. KfW offers a subsidy that can lower the cost of 5 kW systems by approximately 3,000 euros.

The Running Costs of the Solar System in a Single-Family House

During planning, it is important to include ongoing costs as well. Maintenance, insurance, and metering are included in these costs.

It is important to maintain the solar system regularly in order to achieve optimum performance. During maintenance, dirt and damage are removed, repairs are made, and the mounting is checked. Costs are around 100 euros per annum.

It is also recommended that solar plants be insured. It is a good idea to insure against risks as well as liability. It protects you from the costs of hail damage or other storm damage. Installing a suitable meter will allow you to calculate the feed-in rate. Renting this meter costs around 40 euros per annum.

How long does it take to pay back a solar system in the home?

Installing a solar system comes with certain costs. It is, therefore, important to homeowners to know how long these costs are amortized. The calculation is simple if you have the exact numbers for your expenses and income.

To Take Into Account: The Expenditure Aspect

Purchase and installation costs

Costs for ongoing maintenance, meters, and insurance

Interest costs are incurred in the case of financing

Compare the Income:

Feed-in Tariff based on the expected electricity yield

Electricity price reductions

States and municipalities may offer subsidies

The following timeframes can be estimated, depending on your choice of financing, for the installation of a solar system of 5 kW with an initial purchase price of 9400 euros:

Self-financing for nine years

Debt financing at 50 percent: 10 years

100% external funding: 11 years

The calculation did not take into account electricity storage. The period can be extended up to 10 years if a storage tank has been installed.