BESS complete solutions for solar parks
BESS complete solutions for new & existing solar parks: storage, transformer technology, medium voltage, LV distribution, cabling - incl. profitability forecast in 7 days and optional marketing via Faber Energy Trading.
Turnkey battery storage systems
Faber E Tec supplies battery storage projects as a complete system - including transformer technology, medium voltage, busbar cabinets, cabling and commissioning. Included in all four concepts: a park-accurate Profitability forecast on the basis of your data - usually. within 7 days. On request, we can also take care of marketing and storage trading via Faber Energy Trading.




Transparent data, warning messages and fast response during operation.
Lithium iron phosphate technology with high cycle stability.
Robust for continuous industrial use - safe and durable.
Why storage?
Storage makes yield controllable again! Many solar parks are currently being held back economically by negative electricity prices, curtailment and grid restrictions. A BESS shifts energy specifically into valuable time windows and creates additional revenue opportunities - it is not only the storage system that is decisive here, but also the clean grid integration and the economically optimised operating strategy.
The 3 core services
Our BESS projects are based on three core services that consistently combine technology, efficiency and operation from a single source:
USP 1
Turnkey incl. infrastructure
Storage + transformer technology + medium voltage + ancillary systems - planned, delivered and commissioned with clear interfaces and one contact person.
USP 2
Profitability forecast in 7 days
Based on your project or inventory data, we create a customised profitability forecast - usually within 7 days of receiving the complete data.
USP 3
Marketing and storage trading
Optionally, we can take over the marketing and operational optimisation of your storage system via Faber Energy Trading - so that technology becomes a predictable operation and revenue strategy.
Profitability forecast
Every location, every grid structure and every feed-in profile is different. That is why you will not receive a standard invoice from us, but a specific Forecast for exactly your solar park - based on your planning (greenfield) or your real operating data (inventory).
We have a strong forecasting database and the right technology to reliably derive scenarios.
What you get:
- Recommendation of the storage size (kW/kWh) to suit your park and target (e.g. negative hours, curtailment, marketing)
- Revenue and cost model incl. scenarios (e.g. conservative / realistic / ambitious)
- Sensitivity analysis (price assumptions, utilisation strategy, restrictions due to network/technology)
- For existing parks: baseline analysis + potential through storage integration
What we need for this:
For new construction / planning
- Standort
- Parking performance
- Feed-in point/grid level
- Desired concept
- Objective
For existing parks
- Single-line diagram
- Transformer data
- MS/NS structure
- Generation/feed-in data
- Settlement/negative hours
Forecasts are simulation- and data-based. Actual results depend on market prices, grid restrictions, regulatory requirements and operational management, among other things.
We take over the marketing
including storage trading
That's why we offer not only the technology but also the appropriate economic realisation:
On request, we can take over marketing and storage trading via Faber Energy Trading - from strategy to ongoing operation.
Your advantage
-
One concept - one responsibility:
Technology + strategy + marketing setup -
Operating strategy to match the park:
tailored to the grid, generation and target (e.g. avoidance of negative hours, optimisation of revenues) -
Plannable process:
from profitability forecast → implementation → operational optimisation
4 Storage concepts
We not only supply the storage container, but the complete system - including all ancillary systems. Included in every concept: Profitability forecast and marketing/trading on request.
New build as a complete solution
For: Investors & project developers who build new
Performance: PV (in co-operation) + storage system from Faber E Tec - turnkey implementation
- BESS system design & engineering
- Transformer station / medium-voltage integration
- Bus cabinets, cabling, cable construction (project-dependent)
- Commissioning & handover
- Profitability forecast (accurate for parking)
Optional: Marketing & storage trading via Faber Energy Trading
Complete storage package for system installers
For: EPCs / system installers who want to integrate the storage system as a complete package
Performance: Storage + complete infrastructure with clear interfaces
- Storage + grid-compliant connection/protection concept
- Transformer technology, MS/NS components depending on the project
- Ancillary systems (collective cabinets, cabling, etc.)
- Profitability forecast for the planned project
Optional: Marketing & storage trading via Faber Energy Trading
Retrofit existing car park - A
For: Operators who need a new, scalable MS structure
Performance: Storage integration with new MS concept if required or economically viable
- Inventory & technical assessment
- Planning new MS ring / new connection
- Delivery & realisation incl. commissioning
- Profitability forecast - tailored to the existing park
Optional: Marketing & storage trading via Faber Energy Trading
Retrofit existing car park - B
For: Operators who want to retrofit quickly and cost-effectively
Performance: Utilisation of existing transformers/stations (if suitable) + new LV superstructures from our production
- Evaluation of the existing transformers on the LV side
- Handover to design/planning
- Production of customised low-voltage plates / LV distribution boards
- On site: Exchange old → new, quick conversion
- Profitability forecast - accurate to the car park
Optional: Marketing & storage trading via Faber Energy Trading
Let your energy work while you sleep
BESS systems store surplus energy from solar parks or charge themselves automatically from the power grid (time shifting). The stored energy is later made available exactly when it is needed - reliably, efficiently and economically.
Storage + infrastructure + production + marketing in a complete package
Many suppliers deliver battery systems, we deliver the complete integration including transformer technology, medium voltage and, if required, marketing. Our high level of vertical integration shows its strength particularly in retrofitting: With our own sheet metal and copper production and automated processes, we are very fast in the production of customised LV solutions - ideal for continuing to use existing infrastructure and reducing conversion times.





Faber E-Tec BESS product range
Optimise your energy management with Faber E-Tec: Our scalable energy management systems Battery storage (418 kWh to 5 MWh) enable intelligent self-consumption of electricity and efficient peak shaving. Rely on future-proof BESS systems that impress with their quality and guaranteed grid conformity.
How to get to the store
New build or existing building - we discuss your requirements and record the relevant data
Generally within 7 days of data receipt - parking-accurate and scenario-based
Optionally with marketing & storage trading via Faber Energy Trading
BESS EPC Enquiry
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How quickly will we receive the profitability forecast?
Usually within 7 days of receipt of complete data - customised to your park.
Do you also handle marketing and storage trading?
Yes - on request, we can take over the marketing and operational optimisation via Faber Energy Trading.
What data do you need for a parking-accurate profitability forecast (BESS)?
For new construction or planning, the location, PV output, feed-in point, grid level (LV/MS/HS), target (e.g. negative hours, curtailment, marketing) and a rough system concept are usually sufficient. For existing parks, a single-line diagram, transformer data, MV/LV structure and - if available - generation/feed-in data as well as information on curtailment and negative price hours are also helpful.
How does the grid integration of a battery storage system in a solar park work?
Grid integration is the crucial part: we plan the connection and protection concept, integrate the transformer technology and the medium voltage (depending on the car park structure, also with adaptations to MV/LV distributions, collective cabinets and cabling) and commission the system in a grid-compliant manner. The aim is a clear, clean interface to the grid operator - without any surprises during implementation.
Can a battery storage system also be retrofitted in an existing solar park (retrofit)?
What storage size makes sense for my solar park?
The appropriate storage size depends on your goal: reducing curtailment, avoiding negative price hours, optimising revenues via marketing/trading or a combination of these. That's why we don't provide generalised values, but derive the dimensioning from your data - including scenarios (conservative/realistic/ambitious) and sensitivities to price assumptions, grid restrictions and operating strategy.
What does „marketing & storage trading“ mean?
If you wish, we can take over the marketing and operational optimisation of the storage system via Faber Energy Trading - i.e. the strategic and ongoing operation that turns the storage system into a predictable revenue component. In practical terms, this means a coordinated operating strategy (park/grid/target), marketing setup and ongoing optimisation during operation - so that technology and profitability go together.