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Our guide to solar panel batteries in Ireland

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On the hunt for solar panel batteries?

Look no further. At SpotDif, we understand the integral role solar panel batteries play in your property’s energy system. They're the powerhouse behind your solar panel setup, storing all that wonderful solar energy for those times when the Irish sun decides to take a break.

It might surprise you to know that Ireland can be a great spot for solar panel installation. Even on cloudy days, you can benefit from solar energy — and having a reliable solar battery system is key to maximising your solar investment. Whether it’s the long summer days or the shorter winter ones, the right battery ensures you have a consistent power supply, come rain or shine.

But which type of battery is best for you? From the highly efficient lithium-ion to the more traditional lead-acid batteries, each comes with its own set of benefits. And then there's the option of a solar panel battery bank — a setup that teams up multiple batteries for enhanced energy storage and efficiency.

Choosing the right battery might seem complex, but SpotDif makes it simple. Our comparison tool helps you effortlessly navigate the options available in Ireland. We compare different providers so you can make an informed choice and find the ideal solar panel batteries for your home or business space.

And if you need a little more information to help you choose the best solar panel batteries, read on to discover our handy guide. 

Men fitting a solar panel

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What is a solar panel battery and how does it work?

Embracing renewable energy is increasingly important across the globe, and Ireland is no different. Solar panels are a fantastic choice for anyone hoping to lower their carbon footprint — and their energy bills. However, to truly tap into solar power's potential, solar panel batteries are essential. These batteries are the unsung heroes, storing the sun's energy for when you need it most. Let's explore how they work.

On a bright summer’s day, your solar panels are busy soaking up sunlight, converting it into electrical energy. But what happens when they generate more energy than you can use right away? This is where solar panel batteries come into play. They store the extra energy, ensuring you have a supply for those less sunny moments, like during the evening or the all-too-familiar overcast days.

The magic of solar panel batteries lies in their ability to store energy efficiently. The solar panels do their bit by capturing solar energy and converting it into direct current (DC). However, in your home, you need alternating current (AC) to power your appliances. This is where an inverter comes in, seamlessly converting DC into usable AC. This process ensures the energy stored in your solar batteries is ready for use whenever you need it, day or night.

In Ireland, where the weather can be unpredictable, solar panel batteries make solar power a reliable and practical choice. They ensure that the energy you generate doesn’t go to waste but instead supports your home, reducing reliance on the grid and enhancing your green footprint.

Are solar panel batteries worth it?

Solar panels fitted onto a roof

Incorporating solar panel batteries into your Irish home’s energy system is a wise decision. These batteries maximise the benefits of the solar energy you collect, making you less dependent on the grid.

Not only can that lead to savings on your energy bills, but it’s also a significant step towards eco-friendly living. And during those unexpected power cuts? Solar batteries are your dependable ally, keeping your home bright and functioning.

Solar panels alone are great, but when paired with battery storage, the advantages multiply.


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What types of solar panel batteries are available?

Just as you have a range of solar panels to choose from — from monocrystalline to thin-film panels — there are also a couple of varieties of solar panel batteries.

Lithium-ion batteries

Lithium ion battery

First up, there’s the compact and efficient lithium-ion batteries.

At the forefront of solar technology these batteries store energy efficiently with minimal loss, thanks to the movement of lithium ions.

Their compact nature is perfect for homes where space might be at a premium. 

These batteries are low maintenance, ideal for busy households, and they usually last for around 10-15 years.

It’s worth noting that lithium-ion solar panel batteries tend to come with a higher upfront price tag but are a cost-effective choice in the long run.

Lead-acid batteries

Lead acid batteries

For those with more space and a tighter initial budget, lead-acid batteries are a classic option. Their operation relies on a chemical reaction between lead plates and sulphuric acid. They’re larger and heavier but offer a more economical entry point into solar storage with a typical lifespan of between five and seven years.

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Which battery type should you go for?

Deciding between lithium-ion and lead-acid batteries depends on your specific needs. If you’re leaning towards advanced technology, longer life, and space efficiency, lithium-ion is ideal. However, if upfront costs and straightforward technology are your focus, lead-acid batteries are worth considering.

What about a solar panel bank?

If you’re hoping to power your property completely off-grid — or if you live in an area where power can be very unreliable — you might want to consider a solar panel battery bank. While this is still formed of either lithium-ion or lead-acid batteries, a solar panel bank is a brilliant solution for storing surplus energy from your solar panels. 

A solar battery bank is essentially a cluster of batteries linked together within your solar power system.  By connecting multiple batteries, you can store a larger amount of energy, enhancing both energy security and efficiency for your home or business.

How many solar panels do I need to run my house in Ireland?

You’ve made the decision to install solar panels and a solar panel battery — but how many panels will you need?  It's a common question with a not-so-straightforward answer. But don't worry, we're here to help you figure it out.

First off, it's all about your household's energy usage. How much power do you typically use? You can find this on your electricity bill, measured in kilowatt-hours (kWh). Once you know your usage, the next step is to consider the average sun exposure in your area. Ireland might not be the sunniest place, but it still gets enough sunlight to make solar power worthwhile.

The efficiency of the solar panels you choose also plays a big role. Higher-efficiency panels might be pricier, but they generate more power in less space. So, if your roof space is limited, these might be a great option.

A typical Irish home might need anywhere from 10 to 16 panels to cover its energy needs. However, this number can vary based on the factors we've mentioned. Once you have a clearer idea of how many solar panels you need, you can estimate how much your panels and battery will cost…

How much does a solar battery cost in Ireland?

As with many home improvements, solar panel prices can vary greatly, depending on a few key factors.

The battery cost itself

Generally, you can expect to invest anywhere from €1,000 to €5,000 for your solar panel batteries. This wide range is primarily down to the type and capacity of the battery you select.


  • At the upper end of this price bracket, you'll find lithium-ion batteries. Why are they pricier? It's because they offer a longer lifespan and boast greater efficiency in energy storage and output. 

  • These batteries are compact, require less maintenance, and provide a steady power supply, making them a top choice despite their higher upfront cost. Their advanced technology ensures that they deliver consistent performance over a longer period, potentially saving you money in the long run.


  • On the more economical side, lead-acid batteries present a viable option. They're the traditional choice in solar energy storage, known for their reliability and lower initial investment. 

  • However, as mentioned above, they tend to be bulkier and have a shorter lifespan. While they offer a lower entry cost, their overall lifetime value may be less than that of lithium-ion batteries.

In Ireland, the choice between lithium-ion and lead-acid batteries will depend on your long-term energy goals, available space, and budget. Each type has its own set of advantages and trade-offs, which you’ll need to weigh carefully against your specific energy needs and finances.

Other factors that may influence the price

Besides the solar battery type, there are several other aspects that can affect how much you’ll pay. For example, the battery's capacity — a larger capacity typically comes with a higher price tag. The brand and technology of the battery also play roles in determining the cost. 

Installation costs

It’s also important to factor installation costs in when planning your solar panels and solar batteries. This price can range from a few hundred euros to over a thousand, depending on the complexity of your setup and the expertise of the installer. 

Remember, a well-done installation can maximise the efficiency of your battery, so it's worth investing in skilled professionals.

These solar thermals directly heat water or other liquids using sunlight

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Is there a grant for solar panel batteries in Ireland?

Covering the cost of solar panels and solar batteries can seem daunting. Fortunately, there are various grants and schemes from the government designed to support homeowners and business owners across Ireland to afford solar panel and battery installation.

The Sustainable Energy Authority of Ireland (SEAI) offers grants for solar panel systems, which can include the cost of batteries. These grants are part of the government's effort to encourage sustainable energy use and reduce carbon emissions across the country.

For homeowners, the SEAI grant can cover a significant portion of the installation costs, making solar panels and batteries more accessible. This financial support is a game-changer for many, reducing the initial investment and making the switch to solar energy more feasible.

For businesses, similar incentives are available. These grants can help offset the cost of transitioning to a solar-powered system, ensuring businesses can contribute to a greener future without bearing the full financial burden.

For more information on financial support for solar panels, take a look at our grants page.

Can you sell solar power back to the grid in Ireland?

Absolutely, in Ireland, you can indeed sell solar power back to the grid! This process is known as a feed-in tariff or a microgeneration scheme. It allows homeowners who generate excess electricity from their solar panels to sell this surplus back to the national grid.

The Irish government is actively encouraging renewable energy use, and this scheme is a key part of that effort. It not only helps offset the cost of your solar panel installation but also promotes sustainable energy practices. By selling excess power, you’re not just earning some money back, but you’re also contributing to a greener, more sustainable energy system in Ireland.

Currently, the specifics of these schemes, including rates and guidelines, are being refined and updated, so it's a good idea to stay informed about the latest developments.


Find the right solar panel battery supplier for your property

Ready to embrace the power of the sun in Ireland? Solar panel batteries are your key to unlocking a sustainable and efficient energy future. Explore your options with SpotDif’s comprehensive comparison tool. We'll guide you through finding the perfect solar panel battery provider for your needs, so you can make an informed and eco-friendly choice.
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Combining in-depth research with an interest in all things home improvement, I aim to keep SpotDif readers up to date with interior design trends, renewable energy options, and more.
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