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At a glance – KOSTAL
KOSTAL Solar Electric was founded in 2006 as a subsidiary of KOSTAL Industrie Elektrik and is now a company within the KOSTAL Group. Specializing in photovoltaics from the very beginning, KOSTAL Solar Electric has established itself as one of the leading suppliers of inverters for private and commercial solar installations.
Development and production take place in Germany – a symbol of the highest quality standards, reliability, and product safety. With eight additional locations in Europe, KOSTAL Solar Electric guarantees comprehensive service and support – directly on site.
Projects with KOSTAL 
News
KOSTAL HELIVOR HV: Modular high-voltage storage system for all applications
With the HELIVOR HV, KOSTAL introduces a powerful high-voltage energy storage system designed specifically for use with the KOSTAL PLENTICORE G3 and MP inverters. The system combines high performance, easy installation, flexible expandability, and advanced safety technology — making it ideal for both residential and commercial applications.
KOSTAL Wallbox ENECTOR: Getting the best out of the sun - tested and confirmed
HTW Wallbox Inspection 2025 confirms: Users who rely on a fully integrated energy system and value efficient, sustainable and convenient charging benefit from KOSTAL.
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Why KOSTAL?
Innovative power and charging electronics with production and development in Germany
Intelligent and sustainable solutions for energy generation, management, and utilization
Over 112 years of experience from the KOSTAL Group
Maximum flexibility and future-proofing thanks to inverters with expandable power and functionality (PLENTICORE)
Latest Products
PLENTICORE G3 universal inverter (three-phase)
- The world's first and only inverter with expandable power and functionality
- Covers a total of 27 application areas with 3 base devices and power classes
- Simple and reliable backup power function on all three phases with minimal installation effort
- First and compact hybrid inverter up to 20 kW made in Germany, offering strong charging and discharging capabilities
PIKO CI 100 project inverter
- Input currents up to 20 A (per string) and up to 40 A (per MPP tracker) possible
- The PIKO CI app enables simple and convenient on-site commissioning
- Protection class IP 66 and type 2 surge protection (integrated and replaceable) on the AC and DC sides ensure safe operation
- The integrated KOSTAL Smart AC Switch replaces the external coupling switch, reducing costs
ENECTOR AC 3.7/11 wallbox
- Charging capacities up to 3.7 kW (single-phase) or 11 kW (three-phase)
- Pre-wired, ready to connect, and easy to install outdoors (IP54 protection, 7.5 m cable)
- The display with 4 LEDs clearly shows important status and event information
- Additional functions can be activated via the KOSTAL Smart Energy Meter and activation code
KOSTAL Smart Energy Meter G2/G3
- By multiple-inverter connection, the intelligent control system ensures optimal power generation for all KOSTAL inverters
- Dynamic active power control ensures grid-compliant feed-in while accounting for household consumption
- Data is collected and transmitted in real time via standard interfaces – around the clock
