Solar Power · Battery Storage · Contracting or Purchase · Europe-wide
Photovoltaics and battery storage — without hardware ties, without platform lock-in.
We don’t build a provider ecosystem. We build what’s on your site—planned, constructed, and operated. Photovoltaic systems and battery storage with a capacity of 1 MW or more, available for purchase or under a Contracting arrangement, with tenders conducted on a per-site basis and open modeling based on KPMG-audited market benchmarks.
Lower electricity costs, increase self-sufficiency, cap peak loads — with a system that remains yours. Europe-wide.
Industrial companies have trusted CUBE CONCEPTS since 2020
Completed projects with industrial companies —
01 — What holds up energy decisions
What really holds up energy decisions.
In most industrial companies, an energy project does not fail because of technology. It fails because multiple pain points are on the table at the same time—and none of them can be solved individually.
Lower electricity costs, yes — but at what price? Which investment delivers reliable returns over 20 years, and which collapses at the first regulatory deadline? Assumptions that don't hold up cost more than excessively high electricity prices.
Check economic viability →Hardware from a single source, software from a single source, power market connection from a single source — convenient until the provider dictates prices or disappears from the market. An energy infrastructure spanning 20 years cannot tolerate dependence on a single supplier.
What we do differently →0 € CapEx or full investment. 100 % revenue or profit share. On-balance-sheet or off-balance-sheet. Three decisions, one consequence for 20 years—and none of them is universally correct.
Compare models →§ 19, § 118 EnWG, AgNes — three levers in grid fees, each with a deadline. Those who wait miss out.
Next deadline is being calculated ... Grid fee optimization in detail →Fire safety, structural engineering, permits, insurance, CSRD resilience, 20-year maintenance — six topics, six contacts, no big picture.
Safety & Approval →Photovoltaics is not the end game. It is the ticket — to self-sufficiency, to market participation, to storage projects that would not even exist without prior PV development.
Photovoltaics in Detail →Your load profile shows peaks. Your storage system would clip them — if the control system knew in every hour which revenue lever is currently dominating.
Multi-Use in Detail →02 — What sets us apart
We're not building a provider ecosystem. We're building what's right for you.
Closed vendor ecosystems are increasingly emerging in the industry — hardware lines, software platforms, and electricity market contracts all from a single source. We deliberately do the exact opposite. Energy infrastructure with a lifespan of 15–20 years is a strategic commitment that should not be in someone else's hands.
01 · Hardware
Tender per location. No own brand.
Component selection based on individual site-specific calculations. No proprietary hardware brand, no commitment to specific suppliers, no hidden supplier markups. The equipment you have on site consists of standard industrial components—interchangeable on the market.
02 · Software
Industry standards. No proprietary platform.
No proprietary control platform. Energy management and EMS based on common industry standards, transferable to third parties. Once you purchase it, you retain ownership of the control logic—even years later.
03 · Market Integration
We are not an energy provider.
Residual current procurement remains in your hands. Battery storage and photovoltaics will be integrated into your procurement strategy, not replaced by it.
Open-Book means: You see the component costs, you see our margin, you see the revenue assumptions. Half-hourly load profile modeling based on KPMG-audited market benchmarks, auditable at any time.
03 — What We Build
What we are building.
Two technologies, four models. Photovoltaics and battery storage as equally important pillars—depending on location, load profile, and CapEx strategy.
Photovoltaics
Solar power as an entry ticket to self-sufficiency and market participation.
Your system, built on reliable load profile data — from a single location to a Europe-wide multi-site rollout. Rooftop or ground-mounted, self-consumption or direct marketing.
[ Number of kWp installed — to be added ]
[Self-consumption rate — to be added]
Battery storage
Industrial BESS for self-consumption, multi-use, and market participation.
Selected independently of manufacturers, with at least three competitive bids, LCOS-evaluated. Substantial project pipeline currently in implementation and planning—ranging from single-site projects to multi-site rollouts.
FTM, BTM or combined · Multi-use designed for § 19, § 118, AgNes.
Battery Storage in Detail →04 — One location, three worlds
An industrial site. Three regulatory worlds.
Industrial location Saxony: 1,895 kWp PV inventory, 1 MW / 2 MWh BESS, 6,795 MWh annual consumption. What the technically identical storage system achieves — and what regulatory outcomes follow.
Source: CUBE CONCEPTS modeling based on real half-hourly load data and KPMG-audited market benchmarks (February 2026). Profit Share Contracting: CUBE 75 % / Customer 25 % of net market revenues after OPEX. The customer retains 100 % of BTM revenues in full.
Multi-Use BESS in Detail → · Initial consultation for own load profile analysis →
05 — CPFS · Grid connection as an asset
Monetize grid connection — without investment, without operational risk.
CPFS in the Contracting model — CUBE finances, builds, operates, and markets. Many plants, logistics centers, and production facilities have a grid connection capacity that exceeds their actual electricity demand. This unused grid connection capacity is dead capital—and at the same time, a sought-after asset for large-scale battery storage projects. CPFS is one of the models CUBE uses to implement industrial projects—and the only one that works without any investment from the site operator. CUBE finances, builds, operates, and markets a multi-use large-scale storage facility on your property. You provide the site and the grid connection. You receive 25 % of the net market proceeds.
What you bring
An area at your location with sufficient grid connection capacity.
Nothing more. No CapEx, no OpEx, no operational risk, no marketing burden.
What CUBE brings in
Project Development, Construction, Operation, and Marketing.
Permitting process, financing, plant construction, commissioning, maintenance, monitoring. Marketing on the spot market, balancing power, and atypical grid usage. CAPEX risk, market risk, and operating risk lie with CUBE.
What you get
25 % of net market proceeds after OPEX.
Modeling of revenue paths based on KPMG-audited market benchmarks. Full transparency regarding commercialization strategy and margin structure.
A load profile analysis shows in 30 minutes whether your grid connection is suitable as a CPFS revenue asset. Three numbers are enough — grid connection capacity, annual consumption, 15-minute load profile.
06 — Visible instead of promised
Visible, not promised.
Over 150 PV and battery storage projects across Europe. Realized, under construction, planned.
Over 150 locations are on the map. Let's talk about your →
07 — The Team
Over 45 staff members across three locations.
The interdisciplinary team of CUBE CONCEPTS: over 45 energy experts, a mix of generations, cultures, and expertise.
08 — Three numbers for the initial consultation
A robust cost-benefit analysis doesn't need 50 slides.
We need your load data. With these three points, we can provide you with an initial, reliable assessment within 30 minutes.
Mains connection power
In kW. Medium or high voltage.
Annual consumption
In MWh. Rounded is enough for the initial consultation.
15-minute load shed
As Excel or CSV. Typically from the network operator.
09 — Frequently Asked Questions
Frequently asked questions about industrial battery storage and photovoltaics.
Answers to the questions that plant managers, energy managers, buyers, and managing directors ask most frequently before starting an energy project.
Industrial battery storage currently costs between €250/kWh and €200/kWh for capacities up to 2 MWh, and between €175 and €200/kWh for capacities of 5 MWh or more—depending on cell chemistry, site-specific factors, and the chosen model. In the CPFS model, the investment is eliminated entirely—CUBE provides financing, and the site receives 25% of the market proceeds. Modeling per site based on KPMG-audited market benchmarks.
CPFS is a Contracting model for monetizing unused grid connection capacity. CUBE finances, builds, operates, and markets a large-scale multi-use battery storage system on the site operator’s property. The site operator receives no revenue other than the use of the land and the connection. Revenue distribution: CUBE 75% (%), site 25% (%) of net market revenues after OPEX.
CUBE does not bring its own hardware brand, its own software platform, or its own electricity market contract. Components are selected via tender, energy management runs on industry standards, and residual power remains in the customer's hands. The energy system remains transferable throughout – no vendor lock-in to ecosystem.
Three levers work together: self-consumption optimization (using PV electricity oneself instead of feeding it into the grid), peak load capping (reducing grid fees via atypical grid usage and Section 19), and multi-use revenues (spot market, balancing energy). How much each lever contributes depends on the load profile—a 30-minute load profile analysis shows this concretely. Assumptions are modeled based on KPMG-audited market benchmarks.
CUBE realizes photovoltaic and battery storage projects with capacities starting at 1 MW. Projects typically range from single-digit to double-digit MWh, and significantly higher in the CPFS model—depending on grid connection capacity and site specifics.
Multi-Use means that a battery storage system serves multiple revenue streams simultaneously: self-consumption optimization, peak load shaving, atypical grid usage, spot market arbitrage, and grid balancing services. The control logic prioritizes which streams are used each hour based on the current load profile and market prices. This multiple usage significantly increases profitability compared to single-use applications.
§ 118 EnWG exempts battery storage systems from grid fees and other end-consumer levies – but only if commissioning occurs by August 4, 2029. Those who miss the deadline lose this economic advantage for the entire system operating life. Realistic project duration from initial consultation to commissioning: 12 to 24 months.
BESS Contracting means: CUBE finances and builds the storage system; the customer uses it for self-consumption and peak shaving — revenue and risk are borne partially or entirely by the customer, depending on the model variant. CPFS goes a step further: CUBE also handles marketing on the spot market, balancing energy, and atypical grid usage — the site provides only the space and connection, receiving 25% of the net market revenues. Both models require no investment from the customer.
Free initial consultation
Analyze load profile — get a first assessment in 30 minutes.
CUBE CONCEPTS analyzes grid connection, load profile, and price structure — manufacturer-independent, open-book, without commitment.
Request initial consultation →Telephone +49 2131 205220 Email info@cubeconcepts.de · Free · No commitment