Home PV Battery Energy Storage System: Buying Tips for Beginners

Home Home PV Battery Energy Storage System: Buying Tips for Beginners

Most are shifting toward renewable sources with the growing awareness for environmental wellness and curbing electricity costs in this economically fluctuating society. One of them is solar energy panels which assure home and business owners to enjoy a smooth, flawless functioning of electricity and lower their electricity expenses to half the rate.

When it comes to utilizing and installing solar energy, most know that solar equipment consists of solar panels, generators, and a few other equipment in charge of facilitating a smooth electric flow. Still, the solar energy storage concept might be pretty new, and some might wonder if it is essential.

The decision on whether a PV battery energy storage system is necessary for buildings is entirely up to you; however, let us first explain what a solar battery storage system is and what aspects to consider when acquiring one.

What Are Home PV Battery Energy Storage Systems?

PV battery energy storage systems display
Source: Beny

A PV energy-storage system, often known as a house or solar battery, allows you to capture electricity and store it for later use. Solar battery storage units are typically used to store the electricity generated by solar panels during the day for consumption at night.

Solar battery backup power can also considerably reduce your energy bills. You can save money on your utility bill by charging the solar battery during off-peak hours and draining it during peak hours. The savings from doing so can be used to lower the cost of your battery system.

Advantages of Having a PV Battery Energy Storage System 

Giant solar panel
Source: Unsplash

Without a doubt, PV batteries are essential for residential and commercial buildings, given that they provide constant current without offering any hindrance to the building. However, that alone is not the only reason it is recommended to include storage systems and solar panels.

The following are additional advantages of having a PV battery storage system:

  • Uninterrupted Power

The power generated by solar panels is known to be limited to the daytime, so if a building were to switch to electricity at night when demand is often high, the cost of the electricity utilized at night would increase. However, facilities using solar batteries will be able to use them in the evening without relying on the utility for power because the energy collected during the day will be ideally stored in the battery system. Extra costs are thus avoided.

  • Enhanced Monitoring

Through monitoring tools, a solar-plus-storage system can assist you in more accurately and transparently tracking the energy your system produces. You can monitor the energy your home is using and producing in real time with the help of these solutions.

  • It offers a Smooth Flow of Electricity

Consistent electricity flow is made possible by short-term solar energy storage during generator outages caused by passing clouds or routine maintenance.

  • Energy Resilience

The electrical grid is susceptible to interruptions and outages brought on by everything from extreme weather to wildfires. By decentralizing our energy supply, solar energy storage offers a protective bubble amid upsetting situations.

  • Savings From Electric Bills

Even if it uses more energy, home battery storage can help you save money on utilities. Therefore, any extra solar power generated and stored throughout the day can be discharged from a battery at night or on cloudy days instead of utility usage, even if you might not get rewarded as much for excess energy transmitted to the grid.

  • Reducing Carbon Footprint 

In locations with fossil fuel-based utility power, solar battery storage can lower the carbon impact of your property by giving you more choice over how much solar energy you use. Large solar batteries can be used to power any equipment in your home and assist in recharging electric vehicles.

Factors to Consider Before Purchasing Solar Batteries

Solar panel setup on a residential area
Source: Unsplash

Like solar panels, solar batteries are a common addition to homes and commercial structures and are frequently purchased with or apart from solar panels. Although buying from a well-known manufacturer of solar batteries should be the primary objective, there are a few additional elements to consider to ensure that the batteries will be adequate for the structure and provide a steady supply of electricity.

Size of Battery

Various sizes of batteries are available, but choosing the wrong one can totally disrupt the momentum of electricity flow and instead cost you more fortune. When it comes to selecting batteries, proper discretion is essential. 

If you were to choose an undersized battery, it would not have enough capacity to meet the electricity demands of the entire household. And if you select an oversized one, the solar panel will not have sufficient power to charge the whole battery. The worst-case scenarios will get even worse in seasonal changes.

Hence, when choosing batteries, one must first consider the different features and functionalities such as solar array size, system type, power requirements, and energy consumption (kWh).

Battery Capacity and Power Rating

The battery capacity, as well as the power rating, are the following two important factors that you need to consider when it comes to purchasing the appropriate solar battery storage systems. These factors will influence the working of the home battery storage systems.

The battery capacity is measured in kWh (kilowatt-hours), the total amount of energy a battery can store. The power rating of a battery is calculated in Kilowatt (KW), which is the total amount of power that a battery can deliver at any time in a day.

Depending on your purpose and expectations, one must choose the type of battery they are looking for if you are looking forward to purchasing a battery that can run electricity in an entire building for a few hours, a battery with a high-power rating, and a low capacity. However, if you want to run a few appliances for a more extended period, you should go with a solar battery with a low power rating and high capacity.

Type of Battery

Not only in various sizes, but solar batteries are also available in different types as well. You need to look out for two kinds of flatplate and tubular batteries. Choosing the right type plays an essential role in the perfect and smooth functioning of the battery systems. 

The flat plate batteries are lead acid batteries recommended especially for households to provide power for shorter durations, mostly during power cuts and sudden downtimes. These batters comprise a fast charging rate and are also relatively inexpensive compared to other types of batteries.

The tubular batteries are yet another lead acid solar battery; however, they offer more power capacity than the previously discussed one. They are preferred for commercial buildings and buildings that experience frequent, longtime power cuts. Another convincing aspect of tubular batteries is that they are low maintenance and have longer lifespans.

Depth of Discharge (DoD)

The depth of discharge, or DoD, measures the battery’s minimum capacity at which it can still provide electricity to a building. This is a crucial consideration since you must be aware of its capacity to have an optimal flow of power free from fluctuations.

Every battery needs to retain a minimal charge to deliver optimal performance. In case a battery is discharged beyond its limit, it will not be able to deliver its promised optimal performance.

Consequently, paying attention to the DoD of batteries while buying them is essential. For instance, a 10 Ah battery with a DoD of 90% needs to be recharged after using 9 Ah of the battery’s capacity. The owner must immediately charge the batteries when the capacity falls below the Depth of Discharge.

Cost of Solar Batteries 

Solar panels on the Werkspoorfabriek in Utrecht
Source: Unsplash

The cost of solar batteries varies based on the battery type, location, building style, and labor costs. A solar-plus-storage system typically costs between $25,000 and $35,000, depending on the battery’s size and other elements. If you currently have solar panels installed and wish to add storage, the battery price will range from $12,000 to $22,000. Installing the panels and battery simultaneously is simpler and more affordable. 

How Much Do Solar Batteries Cost in 2022?

Installing a solar battery might cost anywhere from $200 to $15,000, depending on the battery’s chemistry.

The average cost of installing lithium-ion solar batteries for home solar panels ranges from $7,000 to $14,000. Small-capacity lead-acid batteries are available for as little as $200. Still, they are commonly used as emergency backup power for RVs and won’t be able to power anything in your home.

Return on Investment of Solar Batteries 

Solar panels setup in a commercial area
Source: Unsplash

In this day and age, investing in solar panels and battery storage systems is both wise and fortunate. The best course of action, given the rising costs of nearly all commodities, is to switch to green energy, which will reduce both expenses and energy use.

Solar batteries’ return on investment (ROI) cannot be determined with absolute certainty because it depends entirely on how and how much energy you will utilize. One thing is for sure, though: using battery systems will significantly lessen your reliance on the grid and substantially lift your dependence on other sources of electricity.

Also, it is worth noting that solar panels usually last for more than 25 years, which can be said for batteries. Typically a household will need like two sets of batteries throughout the lifetime of the solar panels. So, in short, electricity bills will not be a cause of headaches anymore with the inclusion of PV battery energy storage systems.

Factors Influence the Return on Investment of Solar Batteries 

Solar batteries’ ROI is influenced by various factors, including battery capacity, battery deterioration, and energy price fluctuations.

  • The owners can wind up utilizing more electricity from the grid than necessary if the battery capacity is too low because you won’t be able to store as much energy. A battery with a higher capacity should be considered for a larger property.
  • It also matters how quickly a solar battery degrades. Some batteries’ low degradation rates make it possible to use them repeatedly with little trouble. They need to change other batteries more frequently because they don’t last as long.
  • A solar battery’s return on investment (ROI) reduces when power costs are reduced since it is now more inexpensive to use electricity from the grid. The value of storing energy in solar batteries increases as grid electricity prices rise. This is a straightforward effect of changing electricity prices.


Today, solar energy is regarded as one of the economic and environmentally friendly alternatives that help homes and businesses carry out their tasks and operations without worrying about unanticipated events or high electricity bills.

From a trusted manufacturer like Beny, you can purchase the correct type of solar battery that conveniently fits with the solar systems installed in the building and offers an uninterrupted flow of electricity. If you are perhaps looking for a trusted and renowned manufacturer of PV equipment, feel free to contact us

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