Development and production of stationary battery storage systems and energy management systems for households, commercial and industrial applications
FENECON GmbH
Iggensbach · Albersdorf (near Vilshofen a. d. Donau) · DeggendorfNew on Amplifa
About FENECON
FENECON GmbH is a German energy technology company headquartered in Iggensbach in Lower Bavaria. The company develops, produces and markets stationary battery storage systems as well as energy management systems for private, commercial and industrial applications. The portfolio includes home storage, commercial storage and industrial storage systems in various power classes as well as the OpenEMS-based FENECON Energy Management System (FEMS). At the Iggensbach plant, the company produces stationary storage systems from second-life vehicle batteries via the CarBatteryReFactory; capacity is around 500 large-scale storage systems and 30,000 home storage units per year. Home and commercial storage production is located in Albersdorf near Vilshofen an der Donau, and administration is in Deggendorf. Founded in 2011, the family-owned company achieved revenue of around €140 million in 2023 and supplies more than 20 countries.
- Site
- Iggensbach
- Processes
- Manufacture of stationary battery storage systems (home, commercial and industrial storage), Manufacture of stationary storage systems from second-life vehicle batteries (CarBatteryReFactory), Production and development of energy management systems (FEMS/OpenEMS), Rental of industrial storage systems (FERESTO Rental Storage), Energy management system (FEMS/OpenEMS), Rental storage (FERESTO Rental Storage), Second-life vehicle batteries, Bidirectional charging (wallbox)
- Materials
- Second-life vehicle batteries, Batteries from the automotive industry (for large-scale storage), Second-Life Vehicle Batteries, Battery cells from the automotive industry, OpenEMS/FEMS Software
- Certificates
- ISO 9001
- Founded
- 2011
- Employees
- >400
- Industries
- Private households/single-family homes, Agriculture/agri-PV, Commercial businesses, Public institutions (schools, spas), E-mobility & charging parks, Industrial companies
- 01
Development (hardware & software/OpenEMS)
- 02
Cell and battery procurement (including second-life vehicle batteries)
- 03
System manufacturing and assembly of storage systems
- 04
Integration of the FEMS energy management system
- 05
Sales via specialized partners and wholesale
- 06
Service & energy marketing (FERESTO rental storage)
Materials & Key Components
Second-Life Vehicle Batteries
Retired batteries from the automotive industry are reused in the CarBatteryReFactory in Iggensbach to produce stationary storage systems.
Battery cells from the automotive industry
Large-scale storage systems use batteries from the automotive industry.
OpenEMS/FEMS Software
Open-source energy management system as the software stack of all FENECON storage systems.
Locations
Iggensbach
DEHeadquarters and plant for industrial storage systems; CarBatteryReFactory
- Part weight / size
- Large-scale storage up to 1.28 MWh (Industrial L)
- Materials
- Second-life vehicle batteries
- CarBatteryReFactory (production plant for storage systems made from vehicle batteries)
Albersdorf (near Vilshofen a. d. Donau)
DEProduction of home and commercial storage systems
Deggendorf
DEOffice location for administration
Storage Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of stationary battery storage systems (home, commercial and industrial storage)Assembly | – | – | – | – | Electric vehicle batteries (second-life), Battery cells |
| Manufacture of stationary storage systems from second-life vehicle batteries (CarBatteryReFactory)Assembly | – | – | – | – | Second-life vehicle batteries, Batteries from the automotive industry |
| Production and development of energy management systems (FEMS/OpenEMS)Engineering | – | – | – | – | – |
| Rental of industrial storage systems (FERESTO Rental Storage)Engineering | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CarBatteryReFactory (production plant for storage systems made from vehicle batteries) | FENECON | 1 | Capacity of approx. 500 large-scale storage systems and 30,000 home storage units per year | 2024 | Iggensbach |
| Production site for home and commercial storage systems | FENECON | 1 | – | – | Albersdorf near Vilshofen an der Donau |
| Production site for industrial storage systems | FENECON | 1 | – | – | Iggensbach |
Additional services
Reference customers
Quality
All sites are certified to ISO 9001 (2025). The systems are operated and monitored with the company's own FEMS energy management system based on OpenEMS.
| Evidence | Iggensbach | Albersdorf (near Vilshofen a. d. Donau) | Deggendorf |
|---|---|---|---|
| ISO 9001 |
Company History
- 2011
Founded by Franz-Josef Feilmeier; first storage systems built in the barn of his father's farm
- 2013
Flooding destroyed the warehouse and vehicle fleet; rebuilding and development of FEMS
- 2016
Conversion into a GmbH (limited liability company); Energy Award for the energy partner model
- 2019
Qualified as an impact company; BonVenture fund comes on board
- 2020
Revenue doubles due to strong demand
- 2021
Founding of FERESTO GmbH (rental storage)
- 2023
ees Award for Industrial L; EM-Power Award for FERESTO Rental Storage; revenue of approx. €140 million
- 2024
Commissioning of the CarBatteryReFactory in Iggensbach; BayBG equity investment of €5 million
- 2025
The smarter E Award for FEMS; ISO 9001 certification of all sites