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.

Free Webinar:

Energy reforms from 2027:

EEG, grid package & AgNes

Days

Std.

Min.

Sec.

Industrial companies have trusted Cube Concepts since 2020

150+

realized
Energy projects
Europe-wide

45+

Employees, interdisciplinary

3

Locations in
Europe

Completed projects with industrial companies —

TI Automotive

Magna

Valeo

Voestalpine

Tenneco

ITW

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: Section 19 StromNEV application deadline — in 814 days.

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 Connection

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.

PV Purchase

PV Contracting

[ 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.

BESS Purchase

BESS Contracting

CPFS

FTM, BTM or combined · Multi-use designed for § 19, § 118, AgNes.

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.

Current Situation · StromNEV 2026

97,200 €

Total cash flow per year

Payback

5.3 years

IRR

17.2 %

Net Present Value

€328k

Agnes Netzgeführt

€226,500

Total cash flow per year

Payback

2.2 years

IRR

58.6 %

Net Present Value

€1.66 million

AgNes guided

€320,100

Total cash flow per year

Payback

1.5 years

IRR

94.0 %

Net Present Value

€2.70 million

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.

CPFS in detail → • Request initial consultation →

06 — Visible instead of promised

Visible, not promised.

Over 150 PV and battery storage projects across Europe. Realized, under construction, planned.

150+

realized energy projects across Europe

2020

since its founding on the market

3

Locations in Europe

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.

Meet the team →

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.

What does an industrial battery storage system cost in 2026?

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.

What is CPFS?

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.

What distinguishes CUBE from other BESS and PV providers?

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.

How can I reduce electricity costs in an industrial facility with battery storage and photovoltaics?

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.

What is the minimum asset size that CUBE serves?

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.

What does Multi-Use BESS mean?

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.

What is § 118 EnWG and why is August 4, 2029, important?

§ 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.

How do BESS Contracting and CPFS work—what is the difference?

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.

Full Glossary → • Ask a question

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.

Phone +49 2131 205220 Email info@cubeconcepts.de · Free · No commitment

Photovoltaics and battery storage — without hardware ties, without platform lock-in.

Energy reforms from 2027:

EEG, grid package & AgNes

150+

45+

3

What really holds up energy decisions.

We're not building a provider ecosystem. We're building what's right for you.

Tender per location. No own brand.

Industry standards. No proprietary platform.

We are not an energy provider.

What we are building.

Solar power as an entry ticket to self-sufficiency and market participation.

Industrial BESS for self-consumption, multi-use, and market participation.

An industrial site. Three regulatory worlds.

97,200 €

€226,500

€320,100

Monetize grid connection — without investment, without operational risk.

An area at your location with sufficient grid connection capacity.

Project Development, Construction, Operation, and Marketing.

25 % of net market proceeds after OPEX.

Visible, not promised.

150+

2020

3

Over 45 staff members across three locations.

A robust cost-benefit analysis doesn't need 50 slides.

Mains connection power

Annual consumption

15-minute load shed

Frequently asked questions about industrial battery storage and photovoltaics.

Analyze load profile — get a first assessment in 30 minutes.

Battery storage

Photovoltaics

COMPANY

Contact us