What Is Battery Storage? What Are The Benefits Of An Energy Storage System?

Electric Car Charging: The Basics

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What Is A Battery Storage System (BESS)?

In Ireland, small-scale on-site residential and commercial renewable energy systems have become quite common, allowing green electricity generation and consumption on-site. Though any renewable energy system can be used for on-site generation, small-scale solar PV systems and small-scale wind turbines, are the predominant technologies deployed. For solar PV generation, we have witnessed significant growth in the use of available rooftops (residential and business) to install solar panels.

The energy generation and distribution framework in Ireland continues to evolve rapidly, in ways, that the centralised large-scale energy generation plants are becoming less important to the overall energy generation (mix) and energy consumption architecture. Put simply, many consumers (business and families) have become generators and consumers of green electricity on-site.

We can expect this small-scale distributed and on-site generation and consumption model to continue to gain popularity, as households and businesses reduce their reliance on grid supplied power (mostly fossil fuels). Though there are many reasons for this shift in generation and consumption, three key factors have led the way: improved technology, cleaner energy (lower environmental impact) and financial savings.

So far, despite the increase in the deployment of on-site renewable energy installations, a significant limitation has been the ability to store electricity generated by renewable energy systems for use at a later time. However, this is now set to change, with the rapid emergence and popularity of energy storage systems, for both, small-scale and large-scale applications. The availability of battery storage solutions continues to widen, with lower acquisition costs and improved performance.

With battery storage systems, the electricity generated can be stored and used when the sun is not shining or the wind is not blowing! This has resulted in increasing the benefits of owning and generating renewable energy on-site! Battery storage systems are also referred to as energy storage systems. We can expect home energy storage systems to become an integral part of most residential dwellings, just as, on-site renewable energy systems are fast becoming an integral part of the generation mix. The same also applies to battery storage systems for commercial buildings.

Bottom-line, energy storage systems offer a compelling environmental and financial proposition for both, residential and business consumers.

Battery Storage : The Basics
What is battery storage?	Also known as an energy storage system, it allows electricity to be stored for use at a later time, usually at a time when electricity tariff prices are higher (usually, peak times/ periods).
Can a battery storage system be used for both residential and commercial buildings?	Yes, a battery storage can be used for most buildings that consume power, whether a home, office or even a factory. The only difference would be the size (capacity kWh) of the battery storage unit. For most homes, it is usually between 5 kW to 10 kWh. For homes with electric cars, the required battery storage capacity will generally be higher, than for homes without electric cars. Commercial premises will need larger battery storage systems.
Is it mandatory for a renewable energy system to be installed on-site to leverage energy storage technology?	No. However, those with an on-site PV system or wind generation, can gain significantly more from a combined solar PV system + energy storage or wind turbine + energy storage system. The energy storage system can store the surplus renewable energy. For those premises without on-site renewable energy generation, the energy storage can be leveraged to store grid generated electricity at times of lower prices.
Can a renewable energy system be added to an energy storage system at a later date?	Yes. It is a relatively straightforward process and also gives the consumer an opportunity to increase the size of the energy storage system, if required.
How much does a battery storage system cost?	It depends on the capacity (kWh) of the energy storage system. The larger the capacity, the higher the initial investment. Prices for home energy storage systems commence from €2,000. Commercial battery storage systems are more expensive.
Does an energy storage system require a lot of maintenance?	No. In general energy-storage systems are relatively maintenance free, and such systems usually have a 10 year warranty.
Can I combine energy storage with EV charging?	Absolutely. In fact, the combination of on-site renewable energy generation, energy storage and EV charging offers significant financial and environmental benefits.
Do battery storage systems also use Lithium-ion?	Yes. As is the case for an onboard EV battery, most energy storage systems also tend to use Lithium-ion batteries. In fact, some energy storage manufacturers are using the onboard EV battery from a used electric car. As an example, the onboard EV battery from used Nissan Leaf electric cars are currently being used by energy storage manufacturers.
Which companies offer energy storage products?	Tesla, LG Energy, SUNSYNK and Moixa are examples of companies offering battery storage products for residential and business customers.

Buying EV Cables: Top 3 Tips

When it comes to electric car charging cables, an astute electric car owner will focus on quality and performance over cheapest price. We at e-zoomed have an excellent range of high quality and high performance electric car charging cables, all priced very competitively! At e-zoomed we offer charging cables from 2m to 50m for single-phase and three-phase EV charging cables as standard.

EV Cables: Top 3 Tips
Never buy cheap:	Not all EV charging cables are the same. It is simply false economy to try and save a few Euro’s on buying a cheaper cable, when in all probability the EV you own is worth over €30,000! Nor are we suggesting you buy the most expensive. There is always a balance between price and quality, and electric car charging cables are no different. The last thing you need is to have the EV charging cable stop working when you most need it. EV cables on the e-zoomed Electric Living Shop are made from TPU (Thermoplastic Polyurethane), a higher quality material that is extremely flexible, durable and smooth to touch.
The shortest length is never the best choice:	A number of customers seek the shortest length (2m EV charging cable) because it is the cheapest. However a 2m EV cable is limited in practicality and usually not a good long-term investment. Most charging destinations (home or public) require an EV charging cable that is longer than 2m. In our experience, most customers buy EV charging cables between 5m and 25m. We recommend at least a 5m charging cable. It is long enough to meet most charging needs, but compact enough to be carried and put away easily! Of course, a number of customers need even longer EV cables.
A lower technical specification EV charging cable Is never the best choice:	As above, a number of electric car owners seek to buy a 16 amp (single-phase) EV charging cable, instead of a 32 amp (single-phase) EV charging cable. The reason is simple. The 16 amp is marginally cheaper! However, a 16 amp charging cable charges at 3.6kW, a much slower rate to a 32 amp EV charging cable that charges at 7.2 kW. An ampere is the unit for measuring electricity. The accepted standard unit used for measuring how fast an electric current flows is an example of an ampere. The reason why customers in Ireland buy a single-phase EV cable, is because most homes in Ireland are powered by single-phase power supply. Also important to asses is the IP Rating for the EV cable. Not all EV cables have the same IP Rating. Of course, warranty is also important. Most EV cables are sold with a warranty of at least 2 years!

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