Project Overview
This advanced energy‑storage solution comes with a 2.5 MW / 5 MWh configuration and is well‑suited for commercial and industrial applications. The system integrates state‑of‑the‑art liquid‑cooled battery cells supplied by CATL together with MECC's high‑performance liquid‑cooled power conversion system (PCS), fully optimised for high‑efficiency, reliable and long‑duration energy storage.
Cycle Life: Achieves up to 8,000 charge‑discharge cycles, delivering outstanding durability and low operational expenses over its service lifespan.
Certifications: The system has obtained PPDS certification for the Czech Republic and NCRFG certification for Poland, complying with stringent European safety and performance standards.
Designed for projects requiring robust and expandable energy solutions, this ESS combines solid technical reliability with full compliance with European regulatory frameworks.
Even with premium liquid‑cooled hardware and complete regional certifications, large‑scale ESS deployed across Central Europe still faces practical engineering and operational obstacles in real‑world site deployment. Two major pain points often affect actual operating performance and asset return.
Key Technical & Commercial Pain Points
Pain Point 1: Thermal consistency risks under variable European ambient temperature conditions
Central Europe sees large seasonal temperature swings: cold winters bring low‑temperature startup challenges, while hot summer periods push equipment to run under high ambient heat load. Although liquid‑cooled hardware is adopted, improper thermal‑management coordination between battery cells and PCS will still create temperature deviation across battery modules. Uneven thermal distribution leads to inconsistent ageing speed among battery clusters. Over long‑term operation, the usable capacity of the whole system gradually decreases. If the PCS and battery thermal loops work independently without linkage control, excessive temperature difference will shorten the practical cycle life, even though the cell lab specification reaches 8,000 cycles.
Pain Point 2: Complex multi‑country regulatory compliance and on‑site acceptance risks for cross‑border projects in EU
Different European countries enforce their own local grid‑connection codes and certification requirements. Simply holding general EU‑wide certificates cannot guarantee smooth grid‑parallel acceptance in individual nations. Many ESS suppliers only provide hardware products and leave customers to handle local certification and grid‑access adaptation separately. This brings heavy workload for EPC contractors, increases project uncertainty and may cause schedule delays. Minor mismatches between PCS control logic and local grid codes will result in failed site inspection, even if the equipment passes laboratory certification such as Czech PPDS and Polish NCRFG.
MECC Targeted Technical & Compliance Solutions
Solution 1: Co‑linked liquid‑cooled thermal management between CATL battery units and MECC liquid‑cooled PCS
Within this 2.5 MW / 5 MWh ESS, MECC realises joint thermal scheduling for liquid‑cooled PCS and CATL liquid‑cooled battery cells. Rather than two isolated cooling loops, the system establishes interactive data communication. According to real‑time working power, ambient temperature and module temperature data, the whole thermal system dynamically adjusts coolant flow and cooling power. It minimises temperature deviation among battery modules and keeps every cluster operating within the optimal temperature window.
This synergistic thermal design suppresses differential battery ageing. It helps the system approach its full designed 8,000‑cycle service life under real‑world fluctuating climate conditions across Central Europe, lowering long‑term replacement and maintenance costs for asset owners. High operating efficiency is maintained both in cold winter startup and continuous high‑rate discharge during hot summer.
Solution 2: Pre‑validated local grid‑code adaptation and complete regional certification support for Central‑European markets
Beyond laboratory certification, MECC completes pre‑configuration and testing for grid‑connection logic targeting Czech PPDS and Polish NCRFG requirements before factory delivery. The PCS control parameters, protection threshold and grid‑support functions are pre‑calibrated to match local grid codes. The system carries formal PPDS and NCRFG certification documentation, which directly supports on‑site grid‑connection inspection and acceptance.
MECC delivers not only hardware equipment but also regulatory‑compliant system solutions. It removes the burden for partners to carry out secondary modification and repeated certification testing. When customers plan cross‑border expansion within European regions, the proven technical platform can be further adjusted to satisfy additional national standards, greatly reducing project execution risks and shortening overall delivery cycles.
Project Functions & Industry Impact
This 2.5 MW / 5 MWh liquid‑cooled energy‑storage system provides powerful, scalable energy‑storage capacity for European commercial and industrial projects. It can perform peak‑valley arbitrage, peak load shaving, demand‑charge management, renewable‑energy smoothing and emergency backup power for large industrial facilities and business parks. Benefiting from linked liquid‑cooled thermal architecture, the system retains high efficiency and long service life under variable local climate, effectively cutting the levelised cost of energy storage assets.
With official PPDS and NCRFG certifications, the solution removes major market‑access barriers for Central‑European projects. It offers a fully‑validated reference template for medium‑large‑scale ESS deployments in Czech Republic, Poland and neighbouring EU countries. The case demonstrates MECC's capability to combine top‑tier battery hardware, self‑developed liquid‑cooled PCS and deep local regulatory understanding. It facilitates wider adoption of safe, high‑performance energy‑storage across Europe and supports regional industrial decarbonisation and renewable‑energy targets.
500KW/1MW 1MWh/2MWh Battery Energy Storage System Container
The 500kW/1MW 1MWh/2MWh Battery Energy Storage System Container is a turn‑key utility‑grade energy storage solution housed in standard 20ft or 40ft shipping containers, integrating bidirectional PCS, A‑grade LiFePO4 battery clusters, master BMS, liquid‑cooled thermal management, gas fire suppression, high‑voltage distribution and EMS energy management system with full factory pre‑assembly and pre‑commissioning. Requiring only foundation construction and high‑voltage cable connection for on‑site commissioning, it supports flexible power‑capacity configuration and multi‑container parallel expansion, delivering core capabilities of peak‑shaving and load shifting, renewable energy smoothing, frequency‑voltage grid support, islanded micro‑grid operation and large‑scale emergency backup. Featuring IP54 enclosure protection and comprehensive multi‑layer safety mechanisms, it adapts to diverse harsh outdoor environments, and is widely deployed for ground‑mounted PV power stations, industrial parks, mining operations, island microgrids and grid‑side auxiliary service projects to stabilize grid fluctuations, boost renewable energy utilization and reduce comprehensive energy costs.