PV systems - PV Cable - PV Module - Growatt - 20 - 15 - 36 - 55
The solar system as a complete set: solar panels, hybrid inverters and, in most cases, a battery storage unit, all coordinated to work together, ranging from around 7 to just over 30 kWp. Delivered by a haulage contractor; collection in Karlsruhe is possible.
Solar Panel Kits – Complete PV Systems with or without Battery Storage
A complete solar panel kit combines compatible solar panels, a three-phase hybrid inverter and, depending on the configuration, battery storage. ACTEC offers complete solar PV kits from approximately 7 to 30 kWp for homes and larger roofs. Compare output, storage, included components and price.
What size solar panel system do you need?
The right size depends on annual electricity use, available roof space, heat pumps and electric vehicles. For many homes, 9–17 kWp may be suitable; larger roofs can accommodate 21, 25.6 or 30 kWp. Individual system design is essential.
| kWp | Panels | kWh |
|---|---|---|
| ~7 kWp | 15 | 7.5/10 kWh |
| 9.3–9.4 kWp | 20 | 7.5/10/– kWh |
| 11.2–11.3 kWp | 24 | 10/15/– kWh |
| ~14 kWp | 30 | 10/15/– kWh |
| 16.7–16.9 kWp | 36 | 10/15/– kWh |
| ~21 kWp | 45 | 15 kWh |
| ~25.6 kWp | 55 | 15 kWh |
| ~30.2 kWp | 65 | 15 kWh |
Capacities are indicative. Panels measure approximately 1.76 × 1.13 m: 20 panels occupy around 40 m² and 24 panels around 48 m², excluding clearances.
JA Solar and Trina glass-glass panels
Our kits use JA Solar JAM54D40 465 W or Trina Vertex S+ 465/470 W glass-glass panels, with N-type cells and black frames depending on model. Refer to the manufacturer's datasheet for exact dimensions, weight and warranty.
Hybrid inverters and battery storage
Three-phase hybrid inverters include Solplanet, Growatt SPH 10000TL3 and Trina TRH. Compatible storage includes Solplanet Ai-HB G2 Pro, Growatt ARK and Trina systems. Typical capacities are 7.5, 10 or 15 kWh; three, four or six 2.56 kWh modules provide nominal capacities of 7.68, 10.24 or 15.36 kWh. Usable capacity can differ. Backup power depends on the model, configuration and additional electrical equipment.
With or without battery storage?
A battery lets you use daytime solar generation in the evening or at night. Battery-free kits cost less and can suit high daytime electricity demand. They already include hybrid inverters, but future storage retrofits depend on compatibility and manufacturer requirements.
What does a complete solar panel kit cost?
Indicative prices for ACTEC kits with storage range from about €3,800 to €15,000 (October 2026). Check each product page for current prices. Roof mounting, additional cables, installation and grid connection may cost extra.
Kits with battery · Kits without battery · Hybrid inverters · Roof mounting · PV cables and connectors · PV system guide
German VAT, incentives and feed-in payments in 2026
The following rules apply to installations in Germany, not automatically to the United Kingdom. Under section 12(3) of the German VAT Act, qualifying solar systems and essential components may be subject to 0% VAT; conditions apply, including simplified conditions for systems up to 30 kWp registered in the German Market Master Data Register. Eligible German feed-in payments are governed by the Renewable Energy Sources Act (EEG), with rates depending on output, commissioning and export arrangements. Under German metering legislation, systems above 7 kW are generally subject to smart metering and control requirements. Dynamic tariffs and battery charging capabilities depend on system configuration and applicable rules. For installations outside Germany, check local tax, incentive, registration, grid connection and technical requirements.
What's included in the kit?
Each kit contains panels and a matching hybrid inverter; battery-equipped kits also include battery modules and controls. Solar cables are included in some kits and ordered separately in others. Roof mounting systems must be selected for the roof and ordered separately. ACTEC supplies components but does not provide installation.
Registration and grid connection in Germany
In Germany, grid-connected systems must be registered with the network operator and the Bundesnetzagentur's Marktstammdatenregister, generally within one month of commissioning. Stationary batteries require separate registration. Qualified electricians must carry out grid connection and commissioning under applicable technical rules. Outside Germany, follow the relevant national procedures.
Frequently asked questions about solar panel kits
What is included in an ACTEC kit?
Glass-glass panels, a compatible three-phase hybrid inverter and, with storage kits, the specified batteries and controls. The product page lists exact contents.
How much is a 10 kWp system with battery?
ACTEC offers 20-panel 9.3–9.4 kWp and 24-panel 11.2–11.3 kWp systems with various batteries. Current prices appear on each product page.
When will solar panels pay for themselves?
That depends on total purchase and installation costs, generation, electricity prices, self-consumption and applicable export payments.
Which system size is right for my home?
Kits range from approximately 7 to 30 kWp; annual use, roof area, heat pumps and electric vehicles determine the right size.
How much roof space is needed?
20 panels require around 40 m² of panel area; 24 panels require around 48 m², plus clearances.
Is a battery worthwhile?
It shifts daytime solar power to evenings and nights, but costs more. Assess your consumption pattern and storage losses.
What battery size should I choose?
Available options include around 7.5, 10 and 15 kWh. Size storage to actual evening and overnight demand.
Can I add a battery later?
Potentially, because battery-free kits have hybrid inverters. Confirm inverter and battery compatibility.
Which inverters and batteries are supplied?
Depending on the kit, Solplanet Ai-HB G2 Pro, Growatt SPH/ARK or Trina systems.
Can I monitor the system using an app?
Manufacturer monitoring can show production and, where supported, battery charge and energy flows.
Does it work during a power cut?
Some systems support backup power with compatible batteries, electrical wiring and possibly switching equipment.
What warranties apply?
Manufacturer warranties apply; consult the specific product documents for terms and duration.
Are cables, mounting and installation included?
Cables vary by kit; roof mounting and installation services are separate.
Can I install it myself?
Mechanical work requires suitable expertise and roof safety. Grid connection and commissioning require qualified professionals under applicable rules.
How do I register the system?
In Germany, register with the grid operator and Marktstammdatenregister; elsewhere follow national procedures.