Buy battery storage — 100% of the proceeds. ROI in as little as 2 years.
You have free network capacity. Most companies of your size leave it unused.
Most providers sell hardware or electricity. CUBE CONCEPTS builds the system behind it.
BESS Purchase – Which perspective applies to you?
Four areas of responsibility—each with a different perspective on the same business case.
Battery storage purchase - this is relevant for you if —
Three factors determine whether your location is economically viable. CUBE CONCEPTS checks this free of charge based on your load profile data.
FTM direct access from ≥ 1 MW free capacity. Pooling technically possible from 750 kW. Incorrectly sized = revenue potential not realized.
50Hertz, Amprion, TenneT, TransnetBW — Revenue potential differs significantly depending on the control area. CUBE CONCEPTS analyzes your location on a control area-specific basis.
GIK ~250 €/kWh. Recommended technology for C&I: LFP (Lithium Iron Phosphate, LCOS 110 €/MWh, 14-year lifespan). Alternative for long-term operation: ZnBr (Zinc-Bromine Flow, 25 years). A 1 MW system (2,000 kWh) costs approx. €500,000. CAPEX available and planned. Alternatively: Contracting without any investment on your part.
| Technology | LCOS €/MWh | Service life |
|---|---|---|
| LFP ✓ recommended for C&I | 110 | 14 years |
| ZnBr (Zinc Bromide Flow) | 104 | 25 years |
| Sodium-ion battery | 127 | 10 years |
*NIB = sodium-ion battery (Na-ion). LFP: shortest payback period, highest capital efficiency for C&I; ZnBr for long-term operation (25 years). Basis: 10 MW / 40 MWh / WACC 6 % / 2 VZ/day. Source: KPMG AG, Feb. 2026.
Buy vs. Contracting — what that means in numbers
Both models tap into the same revenue streams. The difference: who owns the revenue—and what that means for the term.
Battery Storage Purchase — This is what it looks like in practice
German industrial company, C&I segment, ~4 MW FTM battery storage. All figures from the CUBE CONCEPTS offer—anonymized.
How your battery storage generates revenue daily
The battery storage system participates fully automatically in FTM and spot markets – without impacting your production operations. The optimization decides every minute which market is currently more profitable.
FTM revenue potential: €200,000–300,000/MW/year (KPMG AG, Feb. 2026) · aFRR +40 % 2026 (ISEA RWTH Aachen, Battery Revenue Index 2025)
§118 - Deadline — What You Lose Permanently When You Are Late
§118 (6) of the German Energy Industry Act grants a 20-year exemption from grid fees for battery storage — but only if commissioned by August 4, 2029. This deadline is non-extendable and non-retroactive.
Battery Storage Purchase — Open Book Before Your Decision
Investing € 500,000 based on industry averages would be negligent. CUBE CONCEPTS calculates on a site-specific basis — and shows you the complete calculation before you commit.
What CUBE CONCEPTS reveals — before you sign
Common Objections to Buying a Battery Storage System — Direct Answers
Three questions the buying committee regularly asks before making an investment decision of this magnitude.
„What if the grid energy markets collapse in 3 years?”
aFRR will be the strongest FTM channel in 2026 — up 40% year-over-year (ISEA RWTH Aachen, Battery Revenue Index 2025). Multi-market optimization automatically diversifies across FCR, aFRR, mFRR, and spot arbitrage. If one channel drops out, the algorithm shifts capacity to the remaining ones. No single-channel risk—and the §118 exemption applies regardless of market conditions.
„We don't have an in-house operations and marketing team.”
This is not an obstacle to purchasing. CUBE CONCEPTS offers to handle operations, marketing, and monitoring for a performance-based service fee. The key difference from Contracting: all proceeds remain with you—CUBE receives a service fee, not a share of the proceeds.
„How can we internally advocate for the KPMG forecast?”
CUBE CONCEPTS creates a site-specific calculation for you based on your load profile and control zone before you make a decision – not based on market averages. CUBE BatterySizer calculates over 250 operating scenarios based on your load profile – based on KPMG-audited market benchmarks. Result: a reportable internal calculation, open book, before signing.
References — Battery Storage Systems Implemented Across Europe
Over 150 completed energy projects, multi-site rollouts across Europe. Now battery storage systems — built on the same foundation, with the same standards.
Battery storage purchase as direct climate protection counter-performance
As the owner and operator, you are the direct investor. No indirect operator agreement — the strongest proof of ISP consideration.
KUEBLL companies apply a rate of approximately 5 cents per kWh for up to 50 % of electricity consumption. In return: 50 % as a climate protection measure. As the owner, you qualify directly—clear attribution, strongest evidence. (CISAF para. 121)
ISP consideration as a direct investment vehicle + §118 exemption covering 100% of your revenues + optional §19 atypical treatment (application deadline: September 30). Three regulatory levers in a single project.
Buy a battery storage system in 4 steps — from analysis to commissioning
Last-mile data → GIK, ROI, LCOS, revenue potential. Free, 5 business days, no commitment.
Manufacturer-independent, at least 3 offers, LCOS-rated. CUBE CONCEPTS coordinates completely.
Network registration, site planning, authority coordination. CUBE CONCEPTS handles it.
6–12 months from order. System integration, grid connection, commissioning, start of operations.
Key Questions to Ask When Buying a Battery Storage System
Calculate the purchase of a battery storage system — location-specific, free
CUBE CONCEPTS calculates based on your load profile: GIK, ROI, IRR, LCOS comparison, and FTM savings potential for your control area. Manufacturer-independent. Open-book. No commitment.
Battery Storage — All Topics at a Glance
Battery storage that lowers energy costs. Leverage regulatory frameworks. Activate revenue potential at your grid connection — today.