Battery storage for industry, commerce and e-mobility
Scalable intermediate storage for large-scale photovoltaic systems
With the Faber E-Tec 836 kWh (835.99 kWh), you can increase the profitability of your green energy projects. The system is specially designed for efficient PV intermediate storage and the provision of grid-supporting power. Thanks to the robust outdoor design and the intelligent system control from Faber E-Tec GmbH, even demanding green electricity scenarios can be implemented safely. Optimise your own consumption or use the storage system for strategic electricity trading with 100 % of renewable energy.
Safety & fire extinguishing
Technical features
Even heat dissipation
Automatic fire control
Intelligent control
Weatherproof & robust
Weatherproof & robust
Weatherproof & robust
Sustainable lithium iron phosphate technology with high cycle stability and low maintenance requirements.
Tested safety and protection for industrial battery battery energy storage systems (BESS).
Increased security
Extra protection
All climate zones
Cube XL
The 836 kWh system sets benchmarks in terms of industrial safety standards for scalable storage solutions. A multi-level safety concept with IP55 certification and integrated aerosol extinguishing technology ensures reliable operation and effective heat dissipation. The system is therefore ideally equipped for demanding infrastructure projects and long-term performance.
Profitability forecast within 7 days
Individual profitability analysis for the Faber E-Tec 836 kWh - we calculate your optimisation potential within a week. Optionally, we can secure your investment through strategic marketing and algorithm-based electricity trading via Faber Energy Trading.
Specially designed for the Faber E-Tec 836 kWh, our transformer stations ensure the stable grid connection of high-performance commercial storage systems to the medium-voltage level. We cover the entire spectrum from engineering and construction through to long-term servicing of the systems. This enables us to guarantee standard-compliant commissioning and maximum availability for your commercial energy infrastructure.
BESS EPC Complete solutions from a single source
Buying a battery storage system is only part of the equation. As an EPC specialist (Engineering, Procurement, Construction), Faber E-Tec supplies the entire turnkey infrastructure for the 836 kWh Cube XL from a single source. We take care of the complete electrical engineering planning, the coordination of the components and the final implementation. In this way, we minimise interface risks and ensure that your storage project is connected to the grid smoothly, on time and within the planned budget.
Benefit from our in-depth expertise in the planning and implementation of high-performance energy storage solutions. The Faber E-Tec 836 kWh Cube XL is the result of many years of experience in the realisation of complex projects for industrial companies, energy suppliers and large-scale solar parks.
Project security & speed
We know that time is a critical factor in the energy transition. The Faber E-Tec 836 kWh Cube XL is supplied as a preconfigured complete system. It often only takes a few months from the initial planning to the finished grid connection via our in-house compact transformer stations.
Thanks to the high energy density and factory-tested system components, we enable extremely efficient project realisation. The preconfigured Cube XL 836 kWh massively reduces the installation time on site. Compared to individually planned systems, we can realise your turnkey storage solution in just 10 to 14 weeks.
Simplicity is the key to success: at Faber E-Tec, you have a dedicated contact person for your 836 kWh project throughout its entire duration. From the initial feasibility analysis and technical planning through to the grid connection - we ensure maximum transparency and smooth communication.
We guarantee on-time realisation thanks to structured project processes and the use of certified components. As your EPC partner for the BESS Cube XL, we minimise technical interface risks, as we can also supply suitable medium-voltage solutions and transformer stations directly from our own production facilities on request.
Advantages of the Cube XL
In contrast to the smaller 418 kWh model, the Cube XL doubles your capacity on almost the same footprint. This makes it the first choice for retrofit projects in existing solar parks or for expanding industrial energy infrastructures. Thanks to the integrated liquid cooling, the system remains in the optimum thermal range even at high C rates and intensive use, which guarantees a service life of over 10,000 charging cycles.
Remote monitoring
The BESS Cube XL 836 kWh is monitored around the clock in real time via the integrated, state-of-the-art energy management system (EMS). All relevant operating data, states of charge (SoC) and system messages are available to you remotely at all times, enabling predictive maintenance and optimised management of your storage system.
The Cube XL has been specially developed for demanding environmental conditions. Protection class IP54 (PCS up to IP66) and a wide temperature range of -30 to +50 °C guarantee reliable outdoor operation. Intelligent liquid cooling and a multi-stage fire protection concept protect your investment in the long term.
It's so easy to get your BESS system
Simply select the desired system and send the enquiry form.
Our engineers analyse your project and create the right configuration.
Production, delivery and commissioning, all from a single source from Faber E-Tec.
BESS system request
Maximum service life thanks to over 10,000 charging cycles - the secure basis for large-scale green energy storage projects from Faber E-Tec GmbH.
The BESS portfolio of Faber E-Tec GmbH
Discover our versatile selection of energy storage systems, ranging from the powerful Faber E-Tec 836 kWh to large-scale utility-scale solutions. We cover the entire spectrum for industry and energy parks. With the optional addition of suitable transformer stations, we guarantee a perfectly coordinated energy infrastructure that is realised directly by Faber E-Tec GmbH for your project.
In addition to our 836 kWh storage solutions, we realise customised transformer stations that are precisely matched to the performance data of this BESS class. We supply the complete energy infrastructure for your green energy storage, so that the storage container and medium-voltage connection arrive at your premises as a perfectly harmonised unit from Faber E-Tec GmbH.
FAQ: Faber E-Tec 836 kWh battery storage (Greencube XL)
What capacity and performance does the Faber E-Tec 836 kWh storage system offer?
Which battery technology does Faber E-Tec GmbH use for the 836 kWh model?
Like the entire Faber E-Tec GmbH portfolio, this system is also based on lithium iron phosphate (LFP) cells. This technology offers maximum safety (no thermal runaway), excellent cycle stability and is free from critical raw materials such as cobalt.
Is the Faber E-Tec 836 kWh storage tank suitable for outdoor installation?
Yes, the battery unit is certified to protection class IP55. The robust housing reliably protects the sensitive electronics and battery cells from dust and water jets. In combination with the integrated thermal management, the system is designed for ambient temperatures from -10 °C to +45 °C.
How does the fire protection concept work with the Faber E-Tec 836 kWh?
Safety is a core feature of Faber E-Tec GmbH. The system has integrated aerosol extinguishing technology and an explosion-proof extraction system. These active protective measures, in conjunction with the intrinsically safe LFP cell chemistry, ensure maximum protection for your infrastructure.
Can the storage system be used to optimise solar parks?
Absolute. The Faber E-Tec 835 kWh is ideal for shifting the feed-in time (arbitrage) in solar parks. It helps to temporarily store PV generation peaks and feed the electricity into the grid when exchange electricity prices are at their highest, which increases the overall return on the project.
Does the system fulfil the requirements for grid connection in Germany?
Yes, the Faber E-Tec GmbH system is prepared for compliance with the current grid standards (VDE-AR-N 4110 / 4120). It supports important smart grid functions such as the provision of reactive power and ramp rate control to ensure smooth grid integration.
What is the weight and dimensions of the 836 kWh storage system?
Despite its high capacity, the system is very compact with dimensions of approx. 1800 x 2438 x 2490 mm. The total weight is approx. 8 tonnes. Thanks to these standardised dimensions, the storage tank is easy to transport and can be installed on a foundation base with minimal space requirements.
