How important is a good battery in a PV solar panel system?

Last Updated on 12/04/2025 by owen_2023

How important is a good battery in a PV solar panel system?

The Solarstream in-house team brings expert skills set of knowledge to all the solar projects we get involved in. This includes full project management, technical expertise to supporting our customers grant applications right down to the highest quality products we install. Established in 2017, we have a wealth of knowledge that only experience brings. We have nationwide coverage. Please contact us for your local customer service agent. We have extensive experience in commercial solar panels and residential solar panels.

Solar energy is becoming increasingly popular, with thousands of households in Ireland taking advantage of falling solar panel costs to cut their bills and emissions and reduce their reliance on the grid. Solar panels are an increasingly popular solution for Irish homes – largely because of how much money they can save you on your energy bills.

The global shift towards renewable energy sources has gained considerable momentum in recent years, driven by concerns over climate change, fossil fuel depletion, and the pursuit of sustainable energy solutions. Among the various renewable energy options, solar power stands out as one of the most accessible and widely adopted technologies.

Suppose you’re one of the many turning to solar panels. In that case, you’ll want to know the benefits of solar batteries, too – they let you store more of the solar energy you generate rather than letting the excess electricity go to the grid.

A reliable battery is important for solar panel systems, ensuring consistent power supply, maximizing energy efficiency, and providing backup during outages, making your renewable energy investment worthwhile.

What are the advantages of installing a solar battery?

• Energy independence: solar batteries let you store excess solar energy generated during the day for use at night, or on days when there’s not much sun. This reduces your home’s reliance on the grid and enhances energy independence.
• Reduced electricity bills: by storing excess solar energy and using it during peak times, you can save on your electricity bill costs.
• Environmental benefits: solar batteries help reduce your home’s reliance on fossil fuels by enabling the use of clean, renewable solar energy; this reduces carbon emissions and helps mitigate climate change.
• Backup power: solar batteries provide backup power during grid outages, ensuring that your key appliances and systems remain live – even in a power cut.

Importance of a good battery

Battery Capacity

The capacity of a battery, measured in kilowatt-hours (kWh), determines how much energy it can store. It’s important to choose a battery with a capacity that matches your energy needs. Evaluate your daily energy consumption and select a battery that can store enough energy to meet your requirements.

Safety Features          

Safety is paramount when selecting a battery. Ensure that the battery has built-in safety features such as thermal management, overcharge protection, and short-circuit prevention. These features help in maintaining the battery’s integrity and preventing accidents.

Efficiency        

The amount of stored energy that can be used is a sign of battery efficiency. Higher efficiency means more usable energy and less waste. Aim for batteries with high round-trip efficiency, which measures the energy loss during charging and discharging.

Battery Lifespan         

One important thing to keep in mind is a battery’s longevity. Look for batteries with a longer warranty and life expectancy. Lithium-ion batteries are popular due to their long lifespan and reliability.

Temperature Tolerance       

Batteries can be sensitive to temperature changes. Choose a battery that can operate efficiently within a wide temperature range, ensuring reliability in different weather conditions.

Depth of Discharge (DoD)  

Depth of Discharge refers to the percentage of the battery’s capacity that can be used without causing damage. Greater DoD indicates greater battery usable energy. Look for batteries with a high DoD to maximize energy utilization.

If you are interested in Residential Solar Systems or Business Solar Systems then please contact our friendly customer service team on info@solarstream.ie or call 1800 929 009.