07 Jul 6 keys to choosing the right battery for your solar installation
Do you already have a solar installation or are you thinking about taking the plunge? Then you’re probably wondering if you need a storage system—a battery—to get the most out of your investment. At Soma Genpower , experts in customized renewable solutions, we explain what factors you should consider when choosing the right battery for your home’s solar installation.
What is an energy storage system?
Without a battery, the energy you don’t use is immediately transferred to the grid, and even if it’s offset on your bill, the offset prices are usually low. With a battery, you use more of your own energy.
Keys to choosing the right battery for your solar installation
What is your daily electricity consumption?
Depending on the amount of energy you consume, you’ll need one type of installation and battery or another. Households typically consume 3-5 kWh per day, so you’d need a 5-7 kWh battery. However, some homes have more appliances or electric cars, and they’d need a 10-15 kWh battery.
Review your electricity bill or request a personalized analysis. At Soma Genpower, we can help you size your system so you don’t pay for capacity you don’t need.
We’ll consider the battery’s capacity (how much energy it can store), its power (how many devices you can power simultaneously), and the depth of discharge (the percentage of the battery’s total capacity that you can use without damaging it).
Battery Type
The most common batteries today are lithium-ion, due to their efficiency, durability, and compact size. Other options such as lead-gel or lithium-iron phosphate (LiFePO4) are also gaining popularity.
- Lithium-ion: More expensive, but more efficient and long-lasting. Longer lifespan (up to 6,000 cycles), high efficiency, deep discharge capability (up to 90%), maintenance-free, and less space-consuming, although their initial price is higher.
- Lead gel: a cheaper option, but bulkier and shorter lasting.
Not all batteries are compatible with all inverters. If you already have an installed system, when choosing the right battery for your solar installation, make sure the storage system is compatible with your hybrid or conventional inverter.
In our turnkey projects, we ensure that all components are 100% compatible.
Space available
Batteries can be placed indoors or outdoors, but they require a ventilated and secure space. Consider whether you have a utility room, garage, or protected area where you can install them.
Cost and maintenance
Evaluate the initial price, installation costs, and required maintenance. Lithium batteries, although more expensive upfront, typically require less maintenance and offer a longer lifespan.
The price of a home battery can range from €3,500 to €10,000, depending on the capacity and brand. However, there are grants and subsidies, such as the Self-Consumption Incentive Program with Storage, which can cover up to 60% of the cost.
Our team can help you manage the grants available in your autonomous community.
Do you have or are you going to have an electric car?
If you’re thinking about getting an electric vehicle, a home battery can help you charge it with your own solar energy, especially if you use smart chargers.
In addition, in the future many brands will allow the car battery to be used as home storage (V2H).
In short, choosing the right battery for your solar installation depends on your energy consumption, budget, space, and durability and maintenance expectations. Lithium batteries are typically the best option for most residential installations due to their efficiency, lifespan, and low maintenance, although the initial cost is higher.
At Soma Genpower, we help you study your specific situation, help you choose the right battery for your solar installation, and offer you the best storage solution, no strings attached.
Would you like a personalized analysis? Contact us and we’ll provide you with information without obligation. Together, we’ll make your energy cleaner, more efficient, and 100% yours.
We also invite you to visit our online store for components and batteries .
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