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Buy a 10 kWp Solar System Complete Set with Storage – Your Path to Energy Independence

Rising electricity prices, unstable grids, and the desire for more sustainability are leading more and more households to install their own solar system with storage. A 10 kWp solar system complete set with battery storage is the most efficient solution to become independent from energy suppliers, reduce costs in the long term, and actively contribute to the energy transition. This complete package offers all the components for a powerful photovoltaic system: high-quality solar modules, hybrid inverter, intelligent power storage, mounting system, and all connection materials – all in one package, ready for installation.

The 10 kWp PV system with storage is ideal for single-family homes with an annual electricity consumption of about 4,500 to 8,500 kilowatt-hours – e.g., households with heat pumps, air conditioning, electric cars, or home offices. You get a powerful system that operates economically through self-consumption and can generate additional income through grid feed-in.

What is included in the 10 kWp Solar System Complete Set?

Highly Efficient Solar Modules

The set typically includes 24 solar modules at 440 watts each (e.g., JA Solar JAM54D41), based on N-Type mono cells. These modules achieve efficiencies of up to 22% and are bifacial – meaning they utilize light on both the front and back. The modules feature a double-glass design, extending their lifespan to over 30 years. They are resistant to PID (Potential Induced Degradation) and achieve high yields even in low light conditions.

Inverter with Hybrid Function

The included WIT 10K-X-HU hybrid inverter converts the direct current produced by the modules into household alternating current. The inverter is equipped with an intelligent energy management system (EMS) that automatically optimizes the self-consumption rate. Additionally, it has an emergency power function that supplies your consumers with energy from the storage during a power outage.

Battery Storage: Growatt AXE 10.0L

The storage offers 10 kWh usable storage capacity and is based on cobalt-free LiFePO4 technology, known for high cycle stability, thermal safety, and longevity. The storage consists of two stackable modules of 5 kWh each and can be expanded up to 50 kWh. Thanks to its modular design, the storage is ideal for future performance adjustments.

Mounting System & Accessories

Coordinated mounting systems for pitched or flat roofs are included in the complete set. The aluminum substructure ensures corrosion-free and stable module attachment. All necessary connection cables, plugs, DC fuses, as well as the documentation for commissioning and registration are also included in the delivery.

Who is a 10 kWp PV Complete Set with Storage Suitable For?

• Single-family homes with 120–180 m² roof area
• Households with heat pumps or wall boxes
• Professionals working from home who consume electricity during the day
• Families looking to reduce electricity costs in the long term
• Builders wanting to invest directly in sustainable technology

How Does a Photovoltaic System with Storage Work?

The solar modules convert sunlight into direct current. This is converted into alternating current by the inverter and consumed directly in the household. Excess electricity is automatically stored in the storage. Only when the storage and current consumption are covered is electricity fed into the public grid.

After sunset or during cloudy weather, the battery storage continues to supply the house with self-generated electricity. This can increase self-consumption from 30% to up to 75%. The need for grid electricity drops drastically – saving money and protecting against price spikes.

Economic Viability of a 10 kWp Photovoltaic System with Storage

Reduce Electricity Costs Long-Term

The biggest advantage of having your own solar system is the massive reduction in electricity costs. A household with a 10 kWp PV system and storage can consume up to 8,000 kWh itself, saving around 2,800 to 3,200 euros annually on electricity costs – depending on the electricity price. Assuming a lifespan of over 25 years for the system, the savings add up to over 60,000 euros.

Amortization and Return

The amortization period of a 10 kWp solar system with storage typically ranges between 8 and 12 years – depending on the self-consumption rate, subsidies, and financing. After reaching the break-even point, the system produces free electricity for many years. The internal rate of return can be between 6–9%, making it one of the safest investments in the private sector.

Example Calculation

Comparison of Storage Technologies

LiFePO4 vs. Traditional Lithium-Ion

Modern photovoltaic storage like the Growatt AXE 10.0L is based on LiFePO4 cells (lithium iron phosphate). This technology offers the following advantages over conventional lithium-ion batteries:

• Longer lifespan (over 6,000 charge cycles)
• Higher safety (thermally stable)
• Cobalt-free – more environmentally friendly and sustainable
• High charge/discharge performance

Lead-Gel and Saltwater Batteries – Outdated or Impractical

Lead-gel batteries are inexpensive but large, heavy, and not cycle-resistant. Saltwater batteries are ecologically interesting but (still) inefficient and expensive. For a 10 kWp PV system, a modern lithium storage with at least 10 kWh capacity is the only sensible choice.

Installation, Commissioning, and Grid Connection

Installation by Professional or DIY?

The modules and mounting system can be installed by skilled craftsmen, especially on pitched roofs with easy access. However, the electrical connection of the system – especially the inverter, storage, and grid connection – must only be carried out by a registered electrical company.

Commissioning and Test Protocol

Before operation, the electrical system must be professionally tested. This includes insulation testing, grounding control, polarity testing, measurement of open-circuit voltages, and short-circuit currents. Only after passing the test is the system commissioned with documentation of all values.

Registration with the Grid Operator

Before feed-in, the PV system must be registered with the responsible grid operator. You will need:

• Technical data sheets of the components
• Commissioning protocol
• Installer's certificate
• Registration in the Market Master Data Register (MaStR)

Market Master Data Register – Mandatory for All Systems

Registration in the MaStR of the Federal Network Agency is legally required. Without this registration, there is no feed-in tariff. Registration must be completed before commissioning. This applies to both grid-connected and self-consumption-only systems.

Subsidies and Tax Advantages

Nationwide Programs (e.g., KfW 270)

The Kreditanstalt für Wiederaufbau (KfW) promotes investments in renewable energies with the Program 270. Eligible for funding are both solar systems and battery storage. The KfW offers low-interest loans with grace periods. Applications are made through your bank.

Regional Storage Subsidies

In some federal states, there are additional direct grants for power storage. These can be flat-rate (e.g., 500–1000 €) or tiered per kWh of storage capacity. Programs change frequently – it is worth checking the current status before purchasing.

0% VAT (from 2023)

Since January 2023, there is no VAT for solar systems up to 30 kWp – neither on purchase nor installation. This applies to both complete sets and individual components. This tax exemption also applies to battery storage when purchased in conjunction with a PV system.

Depreciation and Feed-in Tariff

Those acting as entrepreneurs (e.g., with feed-in to the public grid) can depreciate the system over 20 years for tax purposes. The feed-in tariff is currently about 8.11 ct/kWh for systems up to 10 kWp and is guaranteed for 20 years (as of 2025).

Comparison: 10 kWp Solar System with and without Storage

While storage increases the initial investment, it significantly enhances economic viability through much higher self-consumption. It is particularly useful for evening electricity needs (e.g., working professionals) or when using energy-intensive devices like heat pumps or electric vehicles.

Which is Better: PV Complete Set or Balcony Power Plant?

Balcony power plants are mini-PV systems with up to 800 W output. They are suitable for reducing base consumption in apartments or when space is limited. The major drawback: no storage, low output, no scalable solution. A 10 kWp solar system complete set, on the other hand, is the right choice for homeowners who want to seriously switch their energy supply and become autonomous in the long term.

Frequently Asked Questions about the 10 kWp Photovoltaic System with Storage

How Much Roof Space Do I Need for 10 kWp?

About 45–50 m² – depending on the efficiency of the modules and their orientation. With 24 modules at 440 W each, the area is approximately 1.8 m² per module.

How Long Does a Battery Storage Last?

Modern LiFePO4 storage like the Growatt AXE 10.0L lasts over 15 years or 6,000–8,000 charge cycles. The guaranteed service life is usually 10 years.

Do I Have to Feed Electricity into the Grid?

No. You can also operate the system exclusively for self-consumption. However, this reduces economic viability as unused surplus is lost without compensation.

What Does the Connection to the Power Grid Cost?

Grid connection costs vary depending on the grid operator. Typically, they range from 300–900 €, depending on the effort, meter installation, and regional regulations.

Can I Expand My System Later?

Yes. Both PV modules and storage can be expanded modularly – provided the inverter has sufficient capacity. Ideally, this should be considered during planning.

Which App Do I Need for Monitoring?

The WIT 10K-X-HU hybrid inverter features an integrated online monitoring system accessible via web portal or app. This allows real-time tracking of yield, consumption, charge level, and feed-in.

Conclusion: 10 kWp PV Complete Set with Storage – Invest Wisely Now

A 10 kWp solar system complete set with storage is an economically and ecologically sensible investment in your independence. With a high self-consumption rate, stable energy supply, and long-term cost savings, this solution offers numerous advantages over conventional grid supply.

Thanks to modern technology, well-thought-out complete systems, and government subsidies, entering your own power production is easier than ever today. Whether as a direct purchase or with financing – with such a complete set, you are well-prepared for the next 25 years.

✔ Your Benefits at a Glance

• ✔ Generate around 10,000 kWh of electricity annually yourself
• ✔ Up to 75% self-consumption with storage
• ✔ Full control over energy flows via app
• ✔ Tax-free purchase thanks to 0% VAT (up to 30 kWp)
• ✔ Increase the value of your property
• ✔ Active participation in the energy transition

Buy a 10 kWp Solar System Complete Set Now

Take advantage of the opportunity for more independence now – with a pre-configured, efficient photovoltaic complete set with storage. Produce your own electricity, protect yourself against rising energy prices, and invest in technology with a future. Our set is immediately available, certified, tested, and ready for installation.

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