
KOSTAL PIKO CI -
The smart commercial inverter
KOSTAL PIKO CI G2 - The smart commercial inverter for the highest demands
The KOSTAL PIKO CI G2 is the ideal solution for commercial PV systems in the small and medium power range. Available with 30 and 50 kW, high system voltage and integrated KOSTAL Smart AC Switch, the inverter fulfils all the requirements of a commercial inverter - economically, efficiently and future-proof.

Maximum returns. Minimum effort. Maximum reliability.
With the PIKO CI 30/50 G2, KOSTAL presents the next generation of commercial solar inverters - designed for demanding installations in small and medium-sized businesses.
The three-phase inverter combines maximum performance, sophisticated system design and simple integration into PV projects - whether in a workshop or on the flat roof of a commercial building.
What makes the KOSTAL commercial inverter so special?
The KOSTAL PIKO CI G2 impresses with its uncompromising system intelligence: the sophisticated combination of high performance, versatile communication interfaces and integrated safety functions is unique in this power class. Thanks to its excellent efficiency and the option of generous DC over-allocation, the commercial inverter guarantees maximum yield optimisation - even with demanding system layouts.
Designed to be future-proof, the PIKO CI G2 meets current grid requirements and supports flexible feed-in management as well as remote control via common protocols. Every PIKO CI incorporates KOSTAL's expertise - developed with the highest standards of performance, durability and user-friendliness in mind.
Overview of the most important features
- Two power variants: 30 kW and 50 kW for flexible project requirements
- High efficiency: up to 98.2 % (max.)
- High input current: up to 40A per MPPT and 20A per input
- High system voltage: up to 1,100 V for optimum string design
- More MPP trackers, more flexibility: 3 or 4 independent trackers with up to 8 DC inputs
- IP66 protection rating: suitable for demanding outdoor use
- Integrated KOSTAL Smart AC Switch: replaces the external coupling switch
- Strong communication: integrated data logger, 2-way LAN, RS485, WLAN & Bluetooth
Special features of the PIKO CI G2
Clever project planning for maximum economic efficiency
- Optimised generator design thanks to high system voltage of up to 1,100 V (working voltage up to 1,000 V)
- Overloading of up to 150 % on the DC side for more energy yield
- Integrated DC circuit breaker for safe generator disconnection
- Reduction in installation costs due to elimination of external string combiner boxes
- Integrated KOSTAL Smart AC Switch for cost-saving grid disconnection
Strong performance for commercial systems
- Highly efficient energy conversion with certified grid service functions
- Permanent monitoring of the individual PV strings for optimum system diagnostics
Systematic installation - made for professionals
- Robust thanks to IP66, overvoltage protection (replaceable) type 2 (AC and DC)
- Ideal for outdoor use at temperatures from -25 °C to +60 °C
- Simple cable routing and cost-effective 4-wire AC connection (neutral conductor optional)
Simple integration. Better control.
- Fast commissioning thanks to daisy-chain LAN connection (integrated switch)
- Flexible integration into monitoring systems via RS485 or standard protocols
- System information available at all times thanks to integrated data logger
Advantages for installers
Installing the KOSTAL PIKO CI G2 is particularly time-saving - integrated functions such as the Smart AC Switch and tool-free connection technology make installation considerably easier. The elimination of external components such as collective boxes and coupling switches noticeably reduces the installation effort.
At the same time, the flexible system design with several MPP trackers and numerous DC inputs enables customised adaptation to complex system layouts. Maximum safety is ensured by a robust housing with protection class IP66, integrated overvoltage protection and a DC disconnection point that can be switched on site.
- Time-saving installation: thanks to integrated functions such as the Smart AC Switch and tool-free connection technology
- Fewer components - less effort: Elimination of external collective boxes and coupling switches
- Flexible system design: More MPP trackers and DC inputs for demanding system layouts
- Safe handling: Robust housing (IP66), integrated overvoltage protection, on-site disconnection point
Advantages for operators of commercial PV systems
The KOSTAL PIKO CI G2 enables maximum yields thanks to its outstanding efficiency, flexible DC design and precise MPP tracking - ideal for maximising energy yield in commercial applications. At the same time, the inverter impresses with its durability and operational reliability: it is reliably protected against dust, water, overvoltage and other environmental influences.
Operators benefit from full transparency and control thanks to permanent system monitoring and compatibility with KOSTAL monitoring systems. Thanks to its low-maintenance technology and the option of extending the warranty to up to ten years, the PIKO CI G2 also offers a particularly economical solution for long-term operation.
- Highest yields: Thanks to high efficiency, flexible DC design and precise MPP tracking
- Durability & operational reliability: Protection against dust, water, overvoltage and environmental influences
- Transparency & control: Permanent system monitoring, compatible with KOSTAL monitoring systems
- Cost-effectiveness : Low operating costs thanks to low-maintenance technology and extendable warranty (up to 10 years)
The PIKO CI G2 from KOSTAL
A commercial inverter that combines system intelligence with robust technology. Developed for the highest demands in the small and medium-sized commercial sector - flexible, powerful and ready for the energy future.