A solar power system is a simple way to generate your own electricity. A PV system consists of solar modules, an inverter, and—if you have a PV system with storage—a battery storage system. The modules capture sunlight, the inverter converts it into usable household electricity, and if a battery is installed, the energy can be stored for later use.
PV system without battery storage
Efficiency indicates what percentage of the incoming solar energy a PV module converts into electricity. So, the higher the efficiency, the more electricity is generated per m² of module area. If you have enough roof or ground space available to achieve the desired PV output, more affordable solar modules with a lower efficiency can still be a sensible alternative. In general, efficiency—just like price—is closely linked to the cell technology used in modern half-cell modules and typically ranges from 20% to 24%.
Complete PV system with battery storage
With a PV system including battery storage, you increase your energy independence by boosting self-consumption. During the day, your household loads are supported or supplied by solar power. Any surplus energy is charged into the battery, so you can use stored electricity in the evening and at night.
Balcony power system
A balcony power system is also a type of solar installation. It’s a small PV system for a balcony, terrace, garage, or garden. One or two modules, a compact inverter, and a plug are all you need. Optionally, it can also be paired with a small battery storage system.
A complete kit makes sense when you’re planning more components than just an inverter—for example, a PV system with battery storage, a wallbox, or smart home integration (home energy management). In this case, all components are matched to each other from the start. With our pre-selected complete kits, you don’t have to research every part individually and you don’t need to worry about compatibility issues.
Ideally, choose all devices from the same manufacturer. This ensures reliable and efficient communication between components. You also benefit from consistent warranty terms and a clear point of contact for support.
In our online shop, you can select exactly these types of complete solar kits and tailor them to your needs. You decide how large your solar power system should be, which battery storage solution fits your requirements, and which additional accessories are needed. Step by step, you configure your solar system and instantly see which complete kit matches your roof space, annual consumption, and budget.
Use the option to build your own complete solar kit in our shop—with battery storage and more. This way, you get a ready-to-install, verified solution instead of a complicated puzzle of individual components.
Is a PV system still worth it?
In most cases, the answer is a clear yes. A solar power system—especially a PV system with battery storage—reliably produces electricity for many years, while grid electricity prices tend to rise over the long term. The higher your self-consumption rate, the better the investment pays off. In particular, with consistently higher electricity demand, modern appliances, e-mobility, and heat pumps, investing in a solar system remains a smart decision.
How much does a 10 kWp system generate per day?
In Germany, a 10 kWp solar power system can generate around 8,000 to 10,000 kilowatt-hours of electricity per year on average. In summer, on sunny days, a 10 kWp system can easily produce 60 kilowatt-hours or more, while in winter it’s often only about 5 to 10 kilowatt-hours per day. With a battery storage system, you can shift more of that generation into the evening hours and optimize self-consumption.
How much does a 10 kWp system with battery storage cost incl. installation?
The exact price depends on the type of modules, the inverter, the battery size, and the installation effort. A 10 kWp solar system without battery storage can currently cost roughly between €9,000 and €12,000 net, depending on the equipment. A 10 kWp solar system with battery storage is typically around €13,000 to €20,000 net. These figures are for guidance only. In our shop, when you configure your complete kit, you can immediately see how the total price changes if you choose a larger or smaller battery or select different manufacturers for the battery and inverter.
If you’re still unsure which solar power system—whether a PV system, a PV system with battery storage, or a balcony power system—is right for you, a few key figures help: your annual electricity consumption, the available roof area, and your budget. Based on this, you can plan your custom complete kit in our shop and build your own solar system—from a small balcony PV setup to a large PV system with battery storage for a single-family home.
It’s not possible to give a one-size-fits-all answer. Feel free to enter your values in our calculator here and you’ll receive a recommendation for the right system size.
Note on typical self-sufficiency rates:
Without battery storage, single-family homes typically achieve around 25–40% self-sufficiency in practice (household electricity only). With smart load shifting (e.g. running the dishwasher/washing machine during the day, charging an EV when the sun is shining), up to around 50% can be possible in favorable cases.
With battery storage, typical self-sufficiency rates—depending on PV size, battery size, and consumption (household, plus potentially EV charging/heat pump)—are usually in the range of 50–70%, and in some cases up to around 80%. Values close to 100% self-sufficiency are technically only achievable with a very large PV system and a very large battery, and are rarely economical.
| Calculate PV system size | |
|---|---|
| Household electricity (without wallbox/heat pump) [kWh/year] | |
| Specific yield [kWh/kWp·year] | |
| Additional consumers | |
| Wallbox available? | Yes |
| Wallbox consumption [kWh/year] | |
| Heat pump available? | Yes |
| Heat pump consumption [kWh/year] | |
| Battery storage & energy independence | |
| Battery storage planned? | No battery With battery |
| Planned battery capacity [kWh] | |
| Desired energy independence [%] | |
| Result | |
|---|---|
| Total consumption | – |
| Energy independence used for calculation | – |
| Assumed self-consumption rate | – |
| Recommended PV capacity | – |
| Estimated annual PV generation | – |
| Approx. number of modules (430 W each) | – |
| Recommended battery size (guideline) | – |
| Your entered battery size | – |
In our tables, you can see what values result from different system sizes—for example, with an annual electricity consumption of 4,000 kWh.
Complete kit without battery storage
| PV size | Annual yield | SCR* | Self-consumption | SSR** |
|---|---|---|---|---|
| 4 kWp | approx. 3,800 kWh | approx. 35% | approx. 1,330 kWh/year | approx. 33% |
| 6 kWp | approx. 5,700 kWh | approx. 30% | approx. 1,710 kWh/year | approx. 43% |
| 8 kWp | approx. 7,600 kWh | approx. 25% | approx. 1,900 kWh/year | approx. 48% |
| 10 kWp | approx. 9,500 kWh | approx. 22% | approx. 2,090 kWh/year | approx. 52% |
* Self-consumption rate
** Self-sufficiency rate
Complete kit with 10 kWh battery storage
| PV size | Annual yield | SCR* | Self-consumption | SSR** |
|---|---|---|---|---|
| 4 kWp | approx. 3,800 kWh | approx. 68% | approx. 2,600 kWh/year | approx. 65% |
| 6 kWp | approx. 5,700 kWh | approx. 53% | approx. 3,000 kWh/year | approx. 75% |
| 8 kWp | approx. 7,600 kWh | approx. 45% | approx. 3,400 kWh/year | approx. 85% |
| 10 kWp | approx. 9,500 kWh | approx. 38% | approx. 3,600 kWh/year | approx. 90% |
* Self-consumption rate
** Self-sufficiency rate
Complete kit with 10 kWh battery storage and heat pump
According to technical literature and experts, around 30–40% of a heat pump’s annual electricity consumption can be covered by PV power. So if it needs around 3,000 kWh/year, roughly 900–1,200 kWh can be supplied by solar power.
| PV size | Annual yield | SCR* | Self-consumption | SSR** |
| 4 kWp | approx. 3,800 kWh | approx. 96% | 3,650 kWh/year | approx. 52% |
| 6 kWp | approx. 5,700 kWh | approx. 71% | 4,050 kWh/year | approx. 58% |
| 8 kWp | approx. 7,600 kWh | approx. 59% | 4,450 kWh/year | approx. 64% |
| 10 kWp | approx. 9,500 kWh | approx. 49% | 4,650 kWh/year | approx. 66% |
* Self-consumption rate
Complete kit with 10 kWh battery storage, heat pump and EV charger
| PV size | Annual yield | SCR* | Self-consumption | SSR** |
| 4 kWp | approx. 3,800 kWh | approx. 100% | 3,800 kWh/year | approx. 43% |
| 6 kWp | approx. 5,700 kWh | approx. 95% | 5,400 kWh/year | approx. 61% |
| 8 kWp | approx. 7,600 kWh | approx. 76% | 5,800 kWh/year | approx. 66% |
| 10 kWp | approx. 9,500 kWh | approx. 63% | 6,000 kWh/year | approx. 68% |
* Self-consumption rate
** Self-sufficiency rate.
Since a photovoltaic system is a long-term investment, it’s worth choosing the individual components carefully to get the maximum benefit from it. We’ll be happy to advise you or provide a complete quote with current components. Simply fill out our quote request or contact us with your questions.
