Photovoltaics (PV): Build a solar carport and solar system on a flat roof - looking for a system from Kiel, Lübeck, Flensburg or Neumünster?
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Published on: July 9, 2021 / Updated on: August 4, 2021 – Author: Konrad Wolfenstein

Photovoltaic solar carports and solar panels for flat and pitched roofs – Xpert.Digital / seo byeong gon|Shutterstock.com
The growth industry of electric cars challenges the infrastructure
The motto of the moment is "demand, not promote." As of April 1, 2021, there are well over 700,000 plug-in hybrid vehicles and electric cars. This means that in April 2021 alone, a 300% increase was achieved compared to the entire previous year, 2020.
When we talk about funding, it's always linked to specific events. In the field of electromobility, however, there is an acute shortage of charging stations and charging points, making the demand for the necessary capacity to expand electromobility essential and simultaneously posing a challenge for the entire economy.
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In comparison, the number of street filling stations has decreased over the past ten years. The number fell continuously from 14,410 in 2010 to 14,089 in 2020. The number of charging points in Germany developed in the opposite direction; from 2012 to 2021 the number increased almost tenfold. With the increasing number of electric cars, the number of charging stations will continue to grow in the future.
While a charging station consists of one or more charging points, the difference to a charging point is that only one electric vehicle can be charged at a charging point at a time. A charging station can therefore consist of one or more charging points.
In addition to wallboxes, charging stations are part of the charging points. There are currently over 39,500 charging points in total (as of February 2021).
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39,500 charging points compared to 14,000 filling stations only looks very good at first glance. But the fact is that gas stations can refuel and charge more vehicles at the same time much faster. According to estimates, electric car charging stations can currently only cover 10% of the performance level compared to gas stations. What makes things even more difficult is the patchy infrastructure of charging options. If you also take into account that the proportion of electric cars in daily traffic is much lower. The problem will increase even more if the proportion of electric cars grows in the next few years, which is to be expected.
This should be counteracted with a solar requirement and the expansion of solar carports In general, the expansion of renewable energies should focus on solar parks , solar fields and open- space photovoltaic systems . The emission-free future of transport and its infrastructure will be introduced logically and consistently not with the famous electricity from the socket, but with solar carports whether a solar requirement makes sense for this purpose. But the fact is that interest in solar systems is not yet widespread among the population. Although many are environmentally conscious and interested in ecology, interest in solar systems themselves has remained relatively the same at just under 50% from 2013 to now. It is right that everyone contributes their part to an emission-free environment and does not wait for the electricity from the can to become emission-free and greener.
In order to increase the charging options and at the same time obtain the charging current from solar energy, open parking spaces now come into play.
What are open parking spaces?
This does not mean public parking spaces. Open parking spaces are usually:
- A storage area open on the side walls, not a barn or shed or similar.
- Carports, covered parking spaces
- Uncovered parking spaces
- Parking available on a property
- Outdoor parking spaces
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In Baden-Württemberg this affects all open parking spaces with a number of 75 or more parking spaces. Section 8b of the Climate Protection Act in Baden-Württemberg defines that “ a photovoltaic system must be installed above the parking space suitable for solar use There is no alternative as with the requirement for photovoltaic systems for new non-residential buildings.
Our solar parking solution is modular and scalable:
- Quick and easy assembly
- Stable strip foundation as collision protection
- Individually customizable design (color, materials, surface, size, etc.)
- Installation of charging stations and inverters is possible at any time
- Scalable & modular: Available as a single, double or arbitrarily scalable row carport
- Can even be used in the standard version for very high wind and snow loads (s k = 2.2 kN/m²)
- Extra large and wide parking spaces and very easy parking thanks to W-shaped supports
- High-quality design for sophisticated and long-lasting requirements: Hot-dip galvanized steel construction (DIN EN 10346, DIN EN 1461)
- [Click here for more]
Why solar carports?
Demand for electric vehicles is rising. The number of electric vehicles worldwide has increased more than fiftyfold since 2012. In 2007, there were a total of 8 new electric car registrations in Germany. By 2019, this number had risen to 194,163! From January to May 2021, it had already reached 115,296 new registrations. This trend is expected to continue. Solar carports are already attractive investment goods. This also translates into increased appeal for personnel and customer development, making the production and company location more attractive.
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Industrial flat roof solar systems and solar parks or outdoor photovoltaic systems are another alternative
Anyone considering investing in a solar carport should also consider installing a solar panel system on the company roof. Utilizing all available energy potential for an emission-free and autonomous power supply is also a competitive advantage and helps secure market share.
More about it here:
Charging stations and charging infrastructure
A solar carport alone isn't enough. Fundamental questions need to be answered. Should the generated energy be fed into the grid or stored in energy storage systems? What are the load profiles, the technical connection requirements, the number of charging stations, the vehicle parking time, and ultimately, the total PV output? How will the charging sessions be recorded by the company if the employee charges their company car from home? These are questions we will have to address in the future. It's different from what we're used to today.
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Hybrid cars in Germany by 2021
The number of hybrid cars is at a record level
In 2021, the number of hybrid passenger cars in Germany amounted to approximately one million units. In 2011, there were around 37,300 hybrid cars registered in Germany. Since then, the number has increased steadily every year. A hybrid vehicle is defined as a vehicle with at least two energy converters and two integrated energy storage systems to power the vehicle. Energy converters include electric, gasoline, and diesel engines, while energy storage systems include batteries, fuel tanks, and gas tanks. Hybrid vehicles that also have an electric motor are classified as plug-in hybrids.
Purchase bonus for electric vehicles and plug-in hybrids
The purchase or leasing of various types of electric cars is eligible for a government subsidy in Germany called the "environmental bonus." Eligible purchases (buying or leasing) are electric vehicles that are being registered for the first time and whose net list price for the base model does not exceed €65,000. Pure battery electric vehicles receive subsidies of up to €9,000, and hybrid electric vehicles receive up to €5,625. Two-thirds of the subsidy is covered by the federal government and one-third by the car manufacturer. This increased subsidy (previously €4,000 for pure battery electric vehicles and €3,000 for hybrid electric vehicles) was introduced as part of the economic stimulus package to combat the effects of the COVID-19 pandemic.
Demand for alternative drive systems is increasing
The share of conventional powertrains in new vehicle registrations has declined significantly in recent months, while the number of electric cars in Germany continues to rise. Other alternative powertrains, however, have not shown comparable growth; plug-in hybrids and battery electric vehicles (BEVs) still dominate the list of alternative powertrains among new registrations.
Number of hybrid cars in Germany from 2011 to 2021
2011 - 37,256 hybrid cars
2012 - 47,642 hybrid cars
2013 - 64,995 hybrid cars
2014 - 85,575 hybrid cars
2015 - 107,754 hybrid cars
2016 - 130,365 hybrid cars
2017 - 165,405 hybrid cars
2018 - 236,710 hybrid cars
2019 - 341,411 hybrid cars
2020 - 539,383 hybrid cars
2021 - 1,004,089 hybrid cars
Plug-in hybrids in Germany until 2021
The number of plug-in hybrid cars is steadily increasing – as of April 1, 2021, the number of passenger cars with a plug-in hybrid drive in Germany amounted to approximately 349,300 units. Together with purely electric passenger cars (BEVs), the number of electric cars in Germany is thus approaching the one million mark.
A hybrid vehicle has at least two energy converters and two integrated energy storage systems to power the vehicle. Energy converters include, for example, electric, gasoline, and diesel engines; energy storage systems include, for example, batteries, fuel tanks, or gas tanks. At the beginning of 2021, there were approximately one million hybrid vehicles in Germany (including plug-in hybrids).
Hybrid vehicles that also have an electric motor are classified as electric cars (plug-in hybrids).
The biggest difference between an electric car and a plug-in hybrid is the drive system. An electric car is purely electric, while a plug-in hybrid always has a conventional combustion engine alongside the electric motor. Hybrid cars therefore have two drive systems. In a pure hybrid vehicle, the electric motor only assists the combustion engine when starting off, and the combustion engine takes over at higher speeds and lower RPMs. This hybrid electric motor cannot therefore be considered an independent vehicle drive system or an equivalent electric motor in a plug-in hybrid car.
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Number of plug-in hybrid cars in Germany from 2017 to 2021
- 2017 – 20,975 plug-in hybrid vehicles
- 2018 – 44,419 plug-in hybrid vehicles
- 2019 – 66,997 plug-in hybrid vehicles
- 2020 – 102,175 plug-in hybrid vehicles
- 2021 (as of April 1st) – 349,341 plug-in hybrid vehicles
Registered electric cars in Germany
How many electric cars are there in Germany?
The number of registered electric cars was approximately 365,300 on April 1, 2021. This figure represents passenger cars powered exclusively by electricity (BEVs). Depending on the definition, plug-in hybrid passenger cars are also counted as electric cars; their number on April 1, 2021, was approximately 349,300. Overall, the number of electrically powered passenger cars is thus approaching the one million mark.
Which electric cars are eligible for subsidies?
Since electric cars are still relatively expensive, the government supports their purchase with a subsidy. Eligible for funding is the acquisition (purchase or lease) of an electric vehicle that is being registered for the first time and whose net list price of the base model does not exceed €65,000. Pure battery electric vehicles are subsidized with up to €9,000 and hybrid electric vehicles with up to €5,625. The subsidy is covered two-thirds by the federal government and one-third by the car manufacturer. This increased subsidy (previously: €4,000 for pure battery electric vehicles, €3,000 for hybrid electric vehicles) was decided upon as part of the economic stimulus package to combat the effects of the coronavirus pandemic.
When were electric cars invented?
As early as the 1830s, the first vehicles were powered by batteries or electric motors. However, these vehicles were not yet referred to as cars. Today, the vehicle developed by Andreas Flocken in Coburg, Upper Franconia, in 1888 is considered the world's first electric car.
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Number of electric cars in Germany from 2011 to 2021
2011 – 2,307 electric cars;
4,541
electric cars; 2013 – 7,114 electric cars;
2014 – 12,156 electric cars;
2015 – 18,948 electric cars;
2016 – 25,502 electric cars;
34,022
– 83,175 electric cars;
2020 – 136,617 electric cars;
2021 (as of April 1st) – 365,262 electric cars
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That's why Xpert.Solar offers consulting services for solar carports , solar systems and solar systems on flat roofs for Kiel, Lübeck, Flensburg and Neumünster!
I would be happy to serve as your personal advisor.
You can contact me by filling out the contact form below or simply call me on +49 7348 4088 965 .
I'm looking forward to our joint project.
Xpert.Digital – Konrad Wolfenstein
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