KOSTAL Solar Electric International

27/10/2026

Habit vs. efficiency: Why choosing the KSEM is often no longer necessary for KOSTAL systems. 💡

For many installers, the KOSTAL Smart Energy Meter (KSEM) automatically lands on the bill of materials. But with the latest generation of devices—especially the PLENTICORE G3—the inverter already handles key control tasks natively, such as managing the ENECTOR G2 wallbox.

The takeaway: For most standard projects, the KOSTAL Energy Meter (KEM) provides everything you need.

Clear advantages for installation and customers:

Cost-effective: Saves around €100 in hardware costs compared to the KSEM.

Faster commissioning: No configuration required via a separate web interface—true plug-and-play.

High performance: Measures 5 times per second and handles loads up to 100 A.

Quick planning check: Which meter fits your setup?

The KEM is sufficient for:

1× PLENTICORE G2 / G3 (with or without battery storage)

PLENTICORE G3 in a multi-inverter setup

PLENTICORE G3 combined with ENECTOR G2

The KSEM remains the right choice for:

PLENTICORE G2 with ENECTOR G2 or G1

PLENTICORE G2 in a multi-inverter setup

PIKO CI installations

Bottom line for installers:
Before placing your next order, double-check whether the KEM covers the project requirements. It simplifies planning, cuts installation time, and reduces costs for your customers.

Find full details and the complete comparison in the linked "KEM or KSEM" fact

https://www.kostal-solar-electric.com/fileadmin/downloadcenter/kse/Fact_Sheets/Factsheet_KEM_vs_KSEM/FS_KEM-vs-KSEM-en.pdf

09/10/2026

Full control over your PV system: Update for KOSTAL MDC! ⚡️🔋

More inverters, more devices, full transparency: With the feature update, KOSTAL takes Multi Device Control to the next level!

What’s new? 👇
✅ More inverters: Compatible with PIKO CI (G1/G2) and PLENTICORE BI 25 G3 – up to 4 clients per MDC host!
✅ Modbus TCP: The entire system can be controlled centrally via a single interface.
✅ Precise consumption metering: Visualise individual household consumers even more accurately – supported devices include KOSTAL KSEM, Shelly Plug / 3EM, and TQ-Systems.
✅ Even smarter monitoring: Error code notification if a device drops connection.

The core principle remains as simple as it is brilliant: A PLENTICORE G3 handles coordination – without the need for an additional external energy manager.

More info here: https://www.kostal-solar-electric.com/en/about-us/news/kostal-expands-multi-device-control-mdc/

29/09/2026

Tradition meets high-tech: Up to 94% solar self-sufficiency for a dairy farm in Germany ☀️🥛

A modern cowshed never sleeps: 85 cows, two milking robots in continuous 24/7 operation, constant milk cooling, and ventilation demand reliable power around the clock. A forward-thinking dairy farm in Hagen (Germany) faced a clear challenge: How to keep long-term operating costs stable and calculable?

The answer is a tailored commercial solar installation on the farm's roofs, planned and implemented by specialized regional installer Solar Wiebe GmbH from Gummersbach (Germany) in close coordination with KOSTAL, supported by product experts including George Hanna and Andreas Schmalenberg:

🔹 99 kWp PV Capacity: The PIKO CI 50 G2 and PIKO CI 30 G2 commercial inverters convert solar power with high efficiency.

🔹 High-Performance Storage Connection: The PLENTICORE G3 hybrid inverter and the PLENTICORE BI 25 battery inverter deliver a combined charging and discharging power of around 40 kW.

🔹 67.2 kWh Battery Capacity: The KOSTAL HELIVOR HV high-voltage storage system reliably powers milking robots and cooling systems through the night.

🔹 Central Control: Operating as the Multi Device Control (MDC) host, the PLENTICORE BI 25 manages the entire inverter network centrally via a single web interface.

📊 Measurable Results (March to September 2026):

• 76 MWh of solar electricity generated

• 53% direct on-site consumption across the barn, farm butchery, and poultry housing

• 94% self-sufficiency rate during the summer months

• Over €11,000 saved on electricity costs in under six months

• Projected total return on investment (ROI) in approximately five years

A tangible benchmark from German agriculture demonstrating how precision-engineered PV and storage systems effectively lower energy costs through high self-consumption.

The whole story can be read here: https://www.kostal-solar-electric.com/en/about-us/news/tradition-meets-high-tech-how-a-business-in-hagen-is-turning-to-solar-energy-for-its-own-power-supply/

14/09/2026

Start today, expand flexibly tomorrow: Making the energy transition a success in a single-family home! ☀️🏡

Three years after building their home, this family took decisive action – installing their solar system well ahead of upcoming adjustments to feed-in tariffs. The clear goal: sustainably reduce energy costs and power the heat pump with cost-effective solar energy.

System facts at a glance:
🔹 8.74 kWp output: 19 modules across two optimally oriented hipped roof sections (South & South-West)
🔹 High yield: Approx. 9,184 kWh/year – well above their current annual demand of 3,800 kWh
🔹 Smart self-consumption: Heat pump and household appliances run primarily when the sun is shining

The smart core: The KOSTAL PLENTICORE G3 M 8.5 ⚡
It reliably converts solar energy – and is already designed for the future. Whether retrofitting a battery storage unit, connecting an EV wallbox, or activating the backup power feature: thanks to its flexible hybrid functionality, the system expands modularly without replacing the central inverter. With the KOSTAL Solar App, the family tracks yields and consumption transparently in real time.

An inspiring project proving that energy independence doesn't have to start as an all-in-one package.

☀️ Read the full story here: ☀️
https://www.kostal-solar-electric.com/en/about-us/news/solar-power-for-the-family-make-the-most-of-it-today-expand-it-flexibly-tomorrow/

04/09/2026

Did you know? 🤔 Your battery storage system doesn't have to sit right next to your solar modules!

When setting up large-scale storage or expanding an existing solar system, flexibility is key. With the PLENTICORE BI 25 battery inverter from KOSTAL, you can place your modules, inverters, and batteries wherever they make the most sense in your building—saving installation time and cable costs. 💡

Watch the quick clip to see how it works 👇

🎬

Flexible Battery Storage Installation: KOSTAL PLENTICORE BI 25Do y...

02/09/2026

⚡️ Full energy. For every need. ⚡️

More power for commercial applications and demanding projects: We are thrilled to introduce the newest addition to our product portfolio – the PLENTICORE BI 25 G3 battery inverter! 🔋🚀

Whether retrofitting an existing system or planning a new installation, the new PLENTICORE BI 25 G3 is the flexible powerhouse for professional energy management:
🔹 Retrofit: Seamlessly upgrade existing PV systems with high-voltage storage solutions
🔹 Expand: Optimize self-consumption and enable commercial peak shaving with ease
🔹 Scale: Perfectly adaptable to growing energy demands and future-proof design
🔹 Quality: Made in Germany – Made by KOSTAL, Made for Europe 🇩🇪🇪🇺
Delivering up to 25 kW of power, the PLENTICORE BI 25 G3 sets new benchmarks in efficiency, smart grid integration, and maximum flexibility.

👉 Ready to discover more?

📰 Read our press release: https://www.kostal-solar-electric.com/en/about-us/news/kostal-launches-sales-of-the-plenticore-bi-25-battery-inverter/
🔍 Technical specifications & product details: https://www.kostal-solar-electric.com/en/products/inverter/plenticore-bi/

How are you powering your projects for the energy transition? Share your thoughts with us in the comments! 👇

27/08/2026

From the circuit board to the finished PLENTICORE! 🔍⚡️

We recently welcomed the team from to our site in Hagen! Alongside in-depth product training, they experienced an exciting Guided Factory Tour right through our production lines.

Seeing how modern solar technology comes to life firsthand – featuring cutting-edge automation, high-precision manufacturing, and genuine expert insights. 🚀

Thank you for visiting us and bringing so much great energy! 💚

💡 Want to take your solar know-how to the next level?

Discover our training courses and webinars at the KOSTAL Solar Academy:

👉 https://www.kostal-solar-electric.com/en/solar-academy/

13/08/2026

⚡ Reduce commercial electricity costs by up to 80%? KOSTAL shows how! ⚡

Rising energy costs are a heavy burden for many medium-sized businesses. With the PIKO CI and PLENTICORE G3, KOSTAL Solar Electric provides a powerful solar solution tailored specifically for commercial rooftops:

✅ High Power: Up to 100 kW per inverter (PIKO CI)

✅ Massive Storage: Modularly scalable from 6.4 kWh up to 230.4 kWh with the HELIVOR HV

✅ Safety & Savings: Faster installation thanks to the integrated Smart AC Switch & real-time monitoring transparency.

Make your company energy-independent and secure true cash flow advantages! 📉☀️

📖 Read the full article directly from the source:

👉 https://www.kostal-solar-electric.com/en/about-us/news/piko-ci-the-cost-saving-solution-for-businesses/

30/07/2026

🚀 Cut Operating Costs: Scalable Solar Solutions for Commercial Roofs by KOSTAL

Rising energy prices are putting pressure on margins. KOSTAL responds with an integrated PV system designed specifically for commercial requirements, pushing self-consumption far beyond 30 kWp! ☀️⚡

Here is how the powerful setup drives efficiency:

🔹 PIKO CI Inverter (30, 50 & 100 kW): Designed for modern, high-power solar modules, handling a maximum input current of up to 20 A per string. Features up to 8 MPP trackers—perfect for complex roof layouts with varying angles or shading.
🔹 HELIVOR Battery Storage (up to 230 kWh): Modular storage scalable from 6.4 kWh to 230.4 kWh. Paired with the PLENTICORE G3, it delivers a massive 20 kW charge/discharge rate to buffer industrial peak loads.
🔹 Up to 80% Cost Reduction: Significantly reduce grid dependency and keep electricity expenses predictable.

💰 Major Tax & Cashflow Advantages:
In markets like Germany, combining depreciations (AfA), special write-offs, and investment allowances lets businesses write off up to 70% of total investment costs in year one!

🔒 Safety & Installation First: Integrated Smart AC Switch (eliminating external grid/plant protection up to 135 kW), Type 2 surge protection, AFCI arc fault detection, and real-time monitoring via the KOSTAL Solar App.

🔗 Find out more here: https://www.kostal-solar-electric.com/en/about-us/news/piko-ci-the-cost-saving-solution-for-businesses/

💬 How is your company handling rising energy costs? Let's discuss in the comments below! 👇

23/07/2026

🚀 Wow, one month ago we headed to Munich for Intersolar Europe 2026!

We look back with great joy and recap the absolute highlights of our anniversary year (20 years of KOSTAL Solar Electric! 🎉).

Under the motto "More possibilities. Less complexity.", we were delighted to welcome over 4,400 visitors to our booth. The interest in smart, flexible, and reliable energy systems was huge! 🔥

💡 Our Product Premieres at a Glance:
⚡ HELIVOR AXIS: All-in-one solution – inverter and storage combined into one compact energy hub.

🔋 PLENTICORE BI 25: Powerful battery inverter providing maximum freedom for commercial projects.

🚗 ENECTOR G2: The 2nd generation of our wallbox – including billing options for company cars charged at home.

🛠️ Smart Features for Installers & Operators:
Multi Device Control: Smart control of multiple inverters within a single system.

Remote Access: Secure remote access for faster diagnostics and service.

Auto BackUp Switch: Automatic switchover to backup power during grid outages.

Solar 4me App: Even more intuitive monitoring and simplified commissioning.

Additionally, key future-oriented topics such as cybersecurity, bidirectional charging, and our quality promise "Made in Germany" were at the center of many exciting discussions. 🤝

📖 Read all the details here:

https://www.kostal-solar-electric.com/en/about-us/news/intersolar-europe-2026-new-products-new-applications-more-opportunities/

A huge thank you to all visitors, partners, and the entire team who made this trade fair unforgettable!

👇 Did you visit our booth? What was your personal highlight? Let us know in the comments!