Battery Energy Storage Systems (BESS)

Store tomorrow’s energy, today.

Reduce reliance on the grid, optimise renewable generation, and ensure resilient power for critical operations with battery energy storage. With over 40 behind-the-meter BESS installations across the UK and globally, Our Battery Energy Storage Systems (BESS) provide large-scale, reliable energy storage for businesses, utilities, and industrial sites.

made-in-sheffield certification logo
< 0 ms

Critical response times with integrated Uninterruptible Power Supply (UPS)

1MW - 10MW

Containerised BESS range (>1MW)

125kW/
261kWh

Modular BESS range (<1MW)

End-to-end BESS solutions

Every site has unique energy needs. Our Battery Energy Storage Systems (BESS) are engineered to integrate seamlessly with existing infrastructure, delivering solutions tailored to your specific challenges and goals.

With extensive experience across diverse sectors, we combine technical expertise with comprehensive feasibility studies to give you a clear, detailed roadmap for your project. From initial assessment to installation and commissioning, we ensure your BESS is optimised for performance, reliability, and efficiency.

Uninterruptible Power Supply

For businesses seeking extra resilience and uninterrupted power supply, we offer an optional integration of Uninterruptible Power Supply (UPS) functionality into our BESS solutions.

Product

BESS With Integrated UPS

BESS Without Integrated UPS

Power Range

50 kW - 10 MW

50 kW - 10 MW

Capacity Range

200 kWh - 20 MWh

200 kWh - 20 MWh

Solution Range

400V to 38.4KV Low Voltage

400V to 38.4KV Low Voltage

Example Applications

Critical infrastructure, data centres, hospitals, financial institutions, manufacturing plants

Industrial facilities, commercial buildings, transport electrification, universities, retail complexes

Energy Management

Provides uninterruptible power supply (UPS) for critical operations. Enhances grid management for efficiency and renewable integration

Enhances energy management for efficiency and renewable integration

Onsite Renewables

Offsets sudden EV demand to reduce network load. Boosts availability of onsite renewables

Offsets sudden EV demand to reduce network load. Boosts availability of onsite renewables

Solar Power Integration

Utilises solar power efficiently, even during grid limitations

Utilises solar power efficiently, even during grid limitations

Island Mode

Offers potential for self-sufficiency with islanded operation

N/A

Power Disruption Protection

Safeguards critical operations against power disruptions with <20s black start response

N/A

CO2 Emissions

A carbon-reducing technology supporting net-zero goals

A carbon-reducing technology supporting net-zero goals

Dynamic adaptability

Our Battery Energy Storage Systems provide a versatile range of benefits, dynamically adapting to each client's unique energy management priorities.

Guaranteed availability

We guarantee a minimum uptime of 95%, supported by availability assurances to ensure the battery is always ready and operational when needed.

Advanced simulations and modelling

Through comprehensive analysis, our team will gain a precise understanding of your energy infrastructure, ensuring the seamless operation of our BESS as expected.

Thorough verification process

Our products undergo rigorous testing, including specialised Factory Acceptance Tests (FAT) that simulate real-world scenarios in our state-of-the-art micro-grid test bay.

Ultra-fast response times

Our UPS system, in standby/offline configuration, delivers a response time of under 10 milliseconds, ensuring rapid protection during power interruptions.

Intelligent AI

Our Artificial Intelligence software optimises energy flow and adapts to evolving site conditions.

Generate cost savings

Charge during off-peak periods to take advantage of lower grid prices, or use stored electricity during peak times to avoid higher rates.

Power resilience

Ensure an area-wide uninterruptible power supply, protecting processes, equipment, and critical data during grid disruptions.

Overcome grid constraints

Resolve issues related to grid constraints, enabling the installation of high-demand technologies such as rapid EV charging.

Enhance on-site generation

Enhance the performance of on-site generation sources, such as solar PV, by storing excess energy for later use.

Support ESG and sustainability targets

By optimising energy usage and supporting renewable energy integration, BESS plays a key role in significantly reducing carbon emissions.

Quality assured

Each Powerstar Battery Energy Storage System is tested to meet the requirements of BS EN 62933-2-1:2018, ensuring reliability and performance.

BESS – From Feasibility to Installation​

customer talking
1. Project Discussion

Get in touch with our team or complete the form below to help us understand your energy requirements. We’ll then assess the potential for savings and provide an indicative ROI based on site specifics.

Digital Twin simulation for Powerstar systems
2. Initial Feasibility Study

Our expert team will conduct in-depth technical modelling, using a digital twin to replicate both the current and proposed infrastructure with the Battery Energy Storage System.

3. Final Proposal Provided

We’ll provide a comprehensive proposal detailing projected kWh and CO2 savings.

4. Installation and Commissioning

Our experienced Powerstar team manages the commissioning of the asset and conducts a Site Acceptance Test (SAT). This thorough process minimises downtime risks while carefully recording all Beginning of Life metrics.

5. Aftercare and Monitoring

Our aftercare team will provide training on our online portal and offer ongoing monitoring and support to ensure your Battery Energy Storage System delivers the projected benefits.

Parkinson Spencer Refractories achieved protection from Power Disruptions, a 5% reduction in Energy Costs and extra revenue through GridBeyond with a BESS.

Making your energy
reliable, affordable & sustainable