Who we are:
CUBE CONCEPTS
CUBE CONCEPTS GmbH plans and builds rooftop photovoltaic systems from 500 kWp and battery storage systems from 750 kW for industry and commerce, as a purchase or through Contracting. The company was founded in April 2020 as Eigenstrom Direkt GmbH, is headquartered in Kaarst near Düsseldorf and has further locations in Prague and Palma de Mallorca. With more than 45 employees, CUBE CONCEPTS has completed more than 150 energy projects across Europe.

Facts
CUBE CONCEPTS at a glance
| The company | Cube Concepts GmbH - Innovative energy solutions |
|---|---|
| Commercial register | Amtsgericht Neuss, HRB 21242 |
| Founding | 28 April 2020 as Eigenstrom Direkt GmbH, since 2021 CUBE CONCEPTS |
| Headquarters | An der Gümpgesbrücke 17, 41564 Kaarst |
| Other locations | Prague (CUBE CONCEPTS s.r.o.) and Palma de Mallorca (CUBE CONCEPTS S.L.). All locations |
| Employees | over 45 |
| Realized energy projects | over 150, throughout Europe |
| Countries with implemented and active projects | Germany, Austria, Great Britain, Spain, the Czech Republic, Hungary and Poland. Able to operate throughout Europe. More about international projects |
| Photovoltaics | Rooftop systems from 500 kWp, purchase or Contracting |
| Battery storage | from 750 kW, purchase or Contracting in the CPFS operating model |
Services
Photovoltaics and battery storage
Photovoltaics
Rooftop systems from 500 kWp for your own consumption, as a purchase or through Contracting. With Contracting, CUBE CONCEPTS makes the investment; you buy the solar power at a fixed price for 20 years and cut your electricity costs by up to 30 %.
Battery storage
Storage systems from 750 kW for peak shaving, balancing energy and electricity trading, in the CUBE Profit Flex Solution (CPFS) operating model. With a purchase, you receive 100 % of the net market revenues; with Contracting, CUBE CONCEPTS invests and you receive 25 %.
More about battery storageMore about the CPFS operating model
Working method
This is how we work
A contractual partner
Your partner for the entire project is CUBE CONCEPTS. CUBE CONCEPTS commissions and coordinates all the implementing partners, from the analysis phase through planning and construction to commissioning.
Planning with real data
The basis of any planning is the measured consumption data for your site in 15-minute increments.
Manufacturer-independent
Components are put out to tender for each site, with at least three competing offers for battery storage systems.
Open calculation
Each offer shows the full cost breakdown before you make your decision.
Our values: Pragmatism and implementation strength. Quality and ambition. Commitment and partnership.
Over 45 experts at three locations
We are the interdisciplinary team at CUBE CONCEPTS: Over 45 minds across three locations, driving the transition to CO₂-neutral energy supply every day. The mix of different generations, cultures, and expertise makes us a dynamic and innovative partner. Get to know the people who will lead your energy project to success.

Managing Director / CFO

Chief Executive Officer

Chief Operating Officer

Chief Investment Officer

Head of People & Culture

Strategic Development

Sales Executive Manager

Sales Manager

Project Office Manager

Project Manager

Senior Sales Manager

Project Manager

Sales Manager

Head of Strategic Controlling & IT Access Management

Business Manager

Project Manager

Marketing Manager

Head of Accounting

Project Manager

Office Manager

Senior Sales Manager

Project Manager

Project Manager

Project planning

Project Manager

HR Generalist

Digital Transformation Manager

Sales Manager

Project planning

Project Manager

Project Manager

Senior Consultant, BESS Systems

Sales Manager

Legal Assistant

Project Planning & Sizing

Apprentice

Project planning

Chief Happiness Officer
Development since 2020
From the first plant to over 150 energy projects
In June 2020, the first photovoltaic system under Contracting was connected to the grid. Today, CUBE CONCEPTS has completed more than 150 energy projects across Europe, employs more than 45 people and works from three locations.
Eigenstrom Direkt GmbH is founded on 28 April. On 5 June, the first photovoltaic system under Contracting is connected to the grid.
Eigenstrom Direkt becomes CUBE CONCEPTS. Financing partnership with SUSI Partners for Contracting systems. Own office in Spain.
The first institutional investor has entered the market. Contracts for photovoltaic projects with a capacity of 60 MW have been signed by the end of the year.
Largest individual contract to date: photovoltaic for an internationally operating plant construction company, with the start of operations at 2 locations with over 5.5 MW. Framework agreement with a globally operating automotive supplier.
Start of photovoltaic power generation at four locations of one of the world's leading automotive suppliers. Awarded the „Top Employer“ title with the highest rating. Office opened in Prague.
Start of the battery storage project in Raskovice, Czech Republic, with over 3 MWh. Start of construction of the 1 MWp photovoltaic system for Purem by Eberspächer in Rakovník, Czech Republic.
Further investors for the portfolio in Eastern Europe. Acquisition of the battery storage project in the Tušimice Energy Park in the Czech Republic with 50 MW / 100 MWh, commissioning planned in the first quarter of 2027. Expansion of sales in Palma de Mallorca.
References
References and partners
A selection from our references: two photovoltaic systems, one under Contracting and one purchased, and the battery storage system in the Tušimice energy park. The references page shows all projects with output, electricity yield and CO₂ savings.
The partner network of CUBE CONCEPTS covers financing, grant advice and experts, construction and execution, as well as maintenance and repair.

Purem by Eberspächer
Model:
Solar power system:
Square meters:
9,231 m²
Electricity generation:
CO₂ savings:
Model:
Power:
Capacity:
Commissioning planned:
Amortization:

Siegenia-Aubi KG
Model:
Solar power system:
Square meters:
12,069 m²
Electricity generation:
CO₂ savings:
Model:
Power:
Capacity:
Commissioning planned:
Amortization:

Under construction
Cube Concepts
Model:
Power:
Capacity:
Commissioning planned:
Amortization:
Partner network





































Questions and answers
Frequently asked questions about CUBE CONCEPTS
What does CUBE CONCEPTS do?
CUBE CONCEPTS plans and builds rooftop photovoltaic systems from 500 kWp and battery storage systems from 750 kW for industry and commerce, as a purchase or through Contracting.
Since when has CUBE CONCEPTS existed?
Since April 2020. The company was founded on April 28, 2020 as Eigenstrom Direkt GmbH and has been operating under the name CUBE CONCEPTS since 2021.
Where is CUBE CONCEPTS located?
The headquarters is in Kaarst near Düsseldorf. Other locations are Prague and Palma de Mallorca.
In which countries is CUBE CONCEPTS active?
There are implemented and active projects in Germany, Austria, Great Britain, Spain, the Czech Republic, Hungary and Poland. CUBE CONCEPTS is operationally active throughout Europe.
At what size does CUBE CONCEPTS implement projects?
Photovoltaics from 500 kWp, battery storage from 750 kW.
What is the difference between a purchase and Contracting?
With a purchase, you make the investment yourself and the system belongs to your company. With Contracting, CUBE CONCEPTS invests: for photovoltaics, you buy the electricity at a fixed price for 20 years; for battery storage, you receive 25 % of the net market revenues.
Is CUBE CONCEPTS tied to a manufacturer?
No. Components are put out to tender for each site, with at least three competing offers for battery storage systems.
Contact us
Are you planning an energy project?
Talk to us about your site and the right model, purchase or Contracting.