BESS solutions from 10 MWh to 500 MWh.
We are a technology supplier and EPC partner specializing in renewable energy and grid-scale Battery Energy Storage Systems (BESS), with project capacities ranging from 10 MWh to 500 MWh. We deliver turnkey BESS solutions that maximize revenue, stabilize grids, and unlock renewable potential.
Grid-scale, built to last.
- 10–500 MWh per project
- 20Y @ 70% SOH
- 12 000 Cycles
A European-grade engineering and service partner.
Our team brings extensive expertise in energy storage engineering, system integration, grid compliance, and long-term asset support across Europe.
From engineering to long-term operation.
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Turnkey EPC for BESS
Full engineering, procurement and construction. Civil works, electrical installation, HV connection. Grid integration, SCADA, commissioning and performance testing. Delivery of ready-to-operate assets.
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System Technology & Equipment Supply
Battery containers (CATL based on latest technology), PCS / inverters, transformers and MV/HV equipment, EMS, PMS and battery control software developed by YES-EU in Europe, fire suppression and safety systems.
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Project Development Support
Early-stage layout & sizing, grid studies and compliance assessments (including Dynamic FFR readiness), CAPEX/OPEX modelling and project finance support, permitting and regulatory advisory based on location/country.
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Long-Term Services (O&M)
24/7 monitoring and remote diagnostics, preventive and corrective maintenance, warranty coordination (we offer always 10 years battery warranty) and performance guarantee structures.
How our specs compare to the 2025/26 industry average.
| Metric | Industry Average (2025/26) | YES-EU Specs | Advantage for you |
| Cell Capacity | 314 Ah | 530 Ah | Much higher density / smaller footprint |
| BESS Cycle Life | 6,000 – 8,000 | 12,000 | Nearly double the operational life |
| BESS Longevity | 10 to 15-year warranties, often ending at 60% or 70% SOH. | 20Y @ 70% SOH (State of Health) | After 20 years of use, the battery will still retain at least 70% of its original charging capacity. |
| Degradation | 5% – 7% (Year 1) | < 4% (Year 1) | More predictable performance |
Built on a new generation 530 Ah LFP cell.
- 530 Ah New generation cell
- 20Y @ 70% SOH
- < 4% Cell first-year degradation
- 12 000 Long service life cycles
A modular system, ready for any deployment.
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Rapid deployment
With strong flexibility, the container can be easily transported and quickly deployed and is suitable for temporary or emergency needs.
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Plug and play
Reduces installation and debugging time and placed quickly into operation.
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Relieve the grid power pressure
It can reduce the load pressure on the power grid and achieve peak shaving.
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Renewable Energy Access
It can be combined with renewable energy sources such as solar and wind power to form an independent microgrid, achieving a green and environmentally friendly power supply.
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Remote monitoring and management
Through remote monitoring, real-time data monitoring can be achieved to improve operational efficiency.
Our BESS technology supports
Sized for merchant or capacity-market projects.
- 10–20 MW Small · 20–40 MWh
- 30–100 MW Medium · 60–300 MWh
Built for where power is needed.
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Public Charging Stations
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Green farm applications
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Commercial and Industrial Parks
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Remote or Off-Grid Areas
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Uninterruptible Power Supply
Proven on European BESS projects.
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Proven experience
Proven experience with Middle-scale European BESS projects.
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Tier-1 suppliers
Tier-1 battery and PCS suppliers using CATL batteries based on latest technology.
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Safety, quality, compliance
Strong focus on safety, quality, and compliance.
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European teams
Dedicated engineering and service teams in Europe — we are one of the major battery service providers to CATL in Europe.
One container. Everything integrated.
The Mobile Storage and EV Charging Container System integrates lithium batteries, Battery Management System, bidirectional Converters, Thermal Management System, Fire Protection System, Electric Vehicle Chargers, and Energy Management System into a container to provide mobile and easily deployed EV charging and energy storage services.
See Mobile Storage specs
Certified to international standards.
IEC 62619, IEC 62477-1 
UL 1973 
UL 9540A Talk with an expert near you.
From a single cabinet to a 500 MWh utility-scale rollout — talk to a YES-EU specialist about your energy storage project.
Contact our team