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Battery Energy Storage

The increase in renewable generation, and the focus on achieving net zero carbon, is making containerised Battery Energy Storage an essential technology for all commercial and industrial organisations.

Battery energy storage, sometimes referred to as BESS, is a versatile and flexible technology. Depending on your business’s energy goals, there are a number of ways it could provide you with a competitive edge.

How can battery energy storage help you?

A battery energy storage system allows for greater control and flexibility of your electricity use. A Powerstar system is a particularly sophisticated version of the technology as it is capable of being installed “Behind-the-Meter”, that is to say on your own site, and can be used for a variety of functions in parallel, such as:

  • Power resilience through Uninterruptible Power Supply (UPS)
  • Maximising on-site generation, by storing energy for use at different times
  • Accessing grid services to sell electricity back to the National Grid and generate revenue
  • Saving money by shifting when you use energy from the grid
  • Buffering large loads, such as Electric Vehicle (EV) charging, from the grid so that they can be more easily and cheaply connected, and combining all of these to turn your site into a smart microgrid

Battery energy storage technology is most impressive where it is deployed to manage a combination of these activities simultaneously.

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How does battery energy storage work?

In simple terms, battery energy storage works by storing electricity so it can be used when required or most beneficial. When deployed with sophisticated control software, this can be automated and use artificial intelligence to learn what generation and use needs to be prioritised.

Whilst the applications of grid-scale battery energy storage are widely discussed, it can provide significant benefits when implemented commercially, Behind-the-Meter (BtM). It can be deployed for a business in this way, but still remains connected to the electricity grid. This provides an integrated energy management and microgrid solution capable of revolutionising the way your organisation uses energy. Battery energy storage can support your entire site should you experience a power disruption. For Large scale deployments, we use a Containerised Battery Energy Storage system which is manufactured in a Shipping container at our site and transported to your organisation in one piece.

A key benefit for a containerised Battery system is that access can be restricted to the container and it doesn’t take up space inside your premises.

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For more technical information about battery energy storage view our technical specifications below.

technical specs

How to implement battery energy storage

In its simplest form, a battery energy storage system can be installed on your site as a standalone technology. The most common application is to store energy generated by solar photovoltaic (PV) panels, for use at times when they are not generating.

However, when implemented with multiple technologies, battery energy storage can maximise the effectiveness of on-site generation while also bolstering EV charging capabilities, accessing grid services to generate revenue, improving energy efficiency, and helping to reduce your electricity bills. This requires a microgrid control system to manage the various power flows.

If your business is assessing its net zero carbon targets, battery energy storage with an integrated microgrid control system will sit at the heart of your technology mix to transform your site into a smart microgrid.

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How are Powerstar Battery Energy Storage Systems helping the NHS?

Critical care facilities literally have a life and death need for an Uninterrupted Power Supply (UPS). Furthermore, providers are faced with some of the strictest carbon reduction requirements of any sector, while stretched budgets mean that securing energy cost savings is also a priority

We are the only Battery Energy Storage company to achieve HTM (Health Technical Memoranda) compliance for NHS installations & the only company to install a Battery Energy Storage System and UPS system for the NHS to date.

Contact our team to see how a BESS can help you

Which sectors benefit most from battery energy storage?

Battery energy storage can make sense for any electricity user, even domestic. However, the business case becomes clearer as the site becomes larger and the electricity demand increases. Wherever there are multiple power flows it is always worth considering a storage system.

Sectors with high electricity consumption, a requirement for power resilience, with on-site generation, complex or sensitive business operations, and a need for flexibility in their energy use will benefit from this technology. For that reason, battery energy storage can be an immensely powerful tool for businesses in manufacturing, healthcare, retail distribution, defence and warehousing.

Commercial Containerised Battery Storage

What is Commercial Battery Storage?

Commercial battery storage is usually a large-scale battery aimed at businesses and organisations to make the best use of their energy usage. These batteries with can be fitted inside your premises or within a container outside can be charged from your onsite generation, such as Solar PV, or from the grid at times of low-cost energy.

This has several benefits which include:

  • Store excess generated energy from onsite wind or solar for later usage or selling back to the grid with a grid service contract.
  • Provide power resilience and UPS capabilities in the even of a blackout or brownout.
  • Generate revenue by charging with low-cost energy and sell back to the grid during peak pricing hours.
  • Lower your energy costs by using the stored energy at peak times by utilising Peak shaving and load shifting.
  • Avoid TRIAD charges by lowering your demand for grid energy at peak times.

For more information about Battery Energy Storage and how it could revolutionise your organisation’s energy use, contact us today

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Related case studies

NHS Hospital in South Yorkshire

Powerstar were engaged to replace a large hospital’s existing Uninterruptible Power Supply (UPS) system with a more efficient, intelligent Battery Energy Storage (BESS) alternative.

South Staffordshire Council

South Staffordshire Council were looking to install a battery energy storage system that provided them with site-wide UPS resilience

Stoba Prazisionstechnik UK Ltd

Stoba is a mass manufacturer and supplier of metallic parts and high quality components to the automotive industry that operates internationally.

AESSEAL® (UK)

AESSEAL needed help protecting their operations from power disruptions while driving forward net zero strategies.


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