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What would a solar roof cost you in 2022 and when is a photovoltaic system worthwhile for your home?

With electricity prices constantly on the rise, many homeowners are wondering what an investment in a solar roof would cost them in the current climate. Those who install a photovoltaic system reap numerous benefits, such as lower electricity bills, lower CO₂ footprint and potentially higher property value. However, these benefits typically come with significant installation and maintenance costs. At the same time, the extent of the gains can vary widely from home to home. Now, this article is designed to help homeowners perform the financial calculations necessary to determine the viability of solar energy in their homes.

How much a solar roof can cost and factors to consider with photovoltaics

environmentally friendly living as a concept for solar panels on the roof

If you want to live greener in 2022, you might consider adding solar panels to your home. While costs have come down in recent years, solar panels can be quite costly to install and maintain. In addition, solar panels are most suitable for homes that receive abundant sunlight throughout the year. Before choosing solar energy, you should understand both the social and economic factors.

installing renewable energy through solar panels

Photovoltaics have been around as a solar technology since the 1950s. However, thanks to falling prices of solar panels, this renewable energy has only been considered economically viable for widespread use since the turn of the millennium. The size of solar panels is given in terms of the theoretical electrical output potential in watts. However, the typical realized output of installed photovoltaic systems, known as the “capacity factor,” is between 15% and 30% of the theoretical output. A 3 kilowatt-hour (kWh) household system running at a 15% capacity factor would produce 3 kWh x 15% x 24 hr/day x 365 days/year = 3,942 kWh/year, or about one-third of a typical household’s electricity consumption.

How to calculate costs for a solar roof as a homeowner

how to calculate costs for a solar roof

However, the above calculation can be misleading, as there is little reason to talk about “typical” energy consumption. In fact, solar energy may make sense for a household, but this is not true for every home. This discrepancy may be due to the financial and practical considerations that must be taken into account when determining viability. Solar energy is also capital intensive, with the primary cost of owning a system being the purchase of the equipment. Thus, a solar panel is almost certainly the largest single item of total cost.

from when is a photovoltaic system with storage worthwhile 2022

Other equipment required for installation includes an inverter, which converts the direct current generated by the panel into the alternating current used by household appliances, as well as metering equipment when it is necessary to see how much power is being generated. It also includes various components, such as cables and switchgear. Some homeowners also consider a photovoltaic system with storage. In addition, if you are a homeowner of a one- or two-family home, you should also consider the cost of labor for installation. Before you buy solar panels, it’s best to get quotes from several reputable installers to calculate the cost-benefit ratio.

When you might decide to go solar

when is it worth spending for solar roof cost in germany 2022

Solar panels save money on your utility bills, and the panels can still generate some electricity on gloomy days, which is vital when the weather is often so dreary. With that said, it’s initially helpful to know how much a solar roof would cost. However, the primary factor that determines the value of solar panels , is your location. In addition, evaluation of the location goes to how much sunlight your area receives and takes into account your electricity costs, the cost of solar energy by residence, local solar energy and more.

construction technology for row house with photovoltaic install on the roof


Solar panels are usually a better investment for homeowners who meet some specific criteria. It’s important to understand that when you buy a solar system, you’re paying for 25 years of electricity up front. So think about what you would spend on future electricity bills. This will help you better assess whether solar panels are worth it for your home.

representative of a solar energy company calculates costs when installing solar roofs

So if you want to buy solar panels, you’ll have to do the math differently than you have in the past. This is because the price of electricity rather than the compensation plays the most important role. In addition, electricity is currently stored for personal consumption rather than for sale. Some homeowners are also considering battery storage. In the past, batteries were prohibitively expensive and unnecessary when the utility pays for excess electricity that is fed into the grid. You also need to consider labor costs for installation. In addition to installation costs, there are several other costs associated with operating and maintaining a solar photovoltaic system. Aside from regular cleaning of the panels, inverters and batteries (if installed) usually need to be replaced after several years of use.

Factors that will help you save costs for a solar roof

from how much kwh is worthwhile a photovoltaic system

  • Your home receives a lot of sunlight. If your residence is exposed to a lot of sunlight throughout the year, you will probably get more out of your solar panels. However, if your home is shaded by trees or other homes, the solar panels probably won’t be worth the investment.
  • Have plenty of space on your roof. A good solar system usually requires a lot of space on your roof that can be left unobstructed by skylights, chimneys, or other fixtures. With a smaller roof, you may still be able to install a system. However, you will need to find the most efficient solar panels in this case, which are correspondingly more expensive, to maximize your limited space. On roofs with steeper slopes, it’s also even more difficult for technicians to install the panels, which could also result in higher labor costs.

installer of solar panels works on a sloping roof with ladder

  • Your roof faces south or west. Homes with south, southwest or west-facing roofs receive more direct sunlight, which results in more energy generated by a panel. Most solar companies evaluate the angle of your roof using satellite imagery. So experts review the insolation maps to calculate how effective a solar system would be for your home.
  • You have high utility bills. The amount of money you save when you switch to solar energy is directly proportional to the amount you spend each month on electricity costs . So if your electricity price is quite high, you can get bigger savings if you switch to solar energy.
  • The government encourages solar energy and offers rebates or tax exemptions. This factor can be a sneaky determinant of the value of solar panels. Net metering, in particular, can have a big impact on the value you receive for your solar energy. If your utility offers high rates or a low buyback rate for solar energy, it may be best to wait until renewable energy policies become more standardized before installing.

What current rates look like and what a solar roof would cost

home with solar roof as an alternative to electricity providers

Even though the price of solar has dropped much faster than expected, such a residential energy system is still a significant investment. You can expect a positive return on solar panels in the future, as with any other investment. However, if you choose a photovoltaic system, prices can vary greatly. Depending on the size, costs are different for a solar roof. Where you live can determine if the system will pay itself back over time. This is because you are not spending as much money to buy electricity from your utility. Depending on where you live and the size of your system, it can take an average of 10 to 20 years to be profitable.

cost calculations for photovoltaic system installation

The average gross price ranges from EUR 9,500 for small roofs to about EUR 19,000 for large roof areas. However, this also includes all ancillary costs, including commissioning. For example, 6 sqm of solar panel on your roof can generate about 1 kilowatt hour. In this way, between 950 and 1,200 kilowatt hours of electricity can be generated. A normal photovoltaic system generates between 4 and 10 kilowatt-hours in homes. So if you have properly evaluated, planned and executed the installation, solar energy is a sound investment to make. Solar panels are worthwhile for the majority of customers in Germany, but there are certainly some exclusions, as described above. Given the current prices for solar energy and an expiring tax credit for solar energy, you can assume that 2022 could be a good year for such a switch. However, if you’re waiting for prices to continue to fall, you may be disappointed.

Pros and cons of solar panels for your home

row houses with photovoltaic systems as alternative solar energy for households

Like most investments, solar energy has its pros and cons. At the same time, some economic costs can be covered by the social benefits to the environment and the reduction in your CO₂ footprint, which goes beyond a purely monetary assessment. In practice, for example, it is often not possible to power a home with solar energy alone, because solar only works when the sun is shining.

engineer with electricity meter analyzes solar panel

This means that it will not allow you to generate optimal power at night, or when the sky is cloudy. There are some battery solutions to provide power during such times, but they are still usually quite expensive. Therefore, most homes with solar panels still rely on the grid from time to time. Despite supply chain issues, the cost of solar power is near historic lows, which could be true through the end of 2022 because of events in Ukraine.

dwelling house with solar roof yield financing by state promotion

However, there are some exceptions, such as too much shade on the roof, too little space on the roof, or electricity bills that are already too low to justify the purchase. Solar panels are not a perfect energy source for everyone. Disadvantages include lower efficiency if you face any direction other than south or west. In addition, there are potential complications with a solar lease or loan when selling a home and upfront costs that may exceed certain demographics.

sustainable and economical renewable energy strategy through solar panels

To find out if solar panels are beneficial to you, it is recommended that you contact a provider directly. Even if it turns out that the cost of solar power is slightly more expensive than power purchased from a utility, homeowners could potentially install solar power to avoid future potential fluctuations in energy costs. Otherwise, you are only looking beyond your personal financial motivations and use of solar energy for the purpose of “green living.”