Home Battery: Store and Use Your Own Energy
A home battery allows you to store the energy you generate, so you can use it when the sun isn’t shining. This helps you save on feed-in costs and makes your energy consumption more efficient. By combining the home battery with an energy management system (EMS), you can even start making money! Curious about how it works? We’ll explain it all here!
The Function of a Home Battery
A home battery stores surplus energy that isn’t being used at the moment. This energy can then be used later in the evening for activities such as cooking, watching television, powering your central heating boiler, or even charging your electric car—especially during times when energy prices are higher. This helps increase your household’s energy independence.
Today, home batteries can also participate in the dynamic energy market and the imbalance market. In dynamic mode, the battery recharges when energy prices are low and discharges when they are high. In the imbalance market, the battery is used to help balance the grid and receives signals to know when it needs to act.
How a Home Battery Works
Home batteries come in two types: AC-connected and DC-connected. Solar panels generate direct current (DC), which is then converted to alternating current (AC) by an inverter for use in your home. The power stored in a battery is DC power. The type of battery that best suits your needs depends on the kind of inverter you currently have or plan to use.
So, which is better? Both types of batteries offer excellent performance. However, with an AC-connected battery, there is a slight power loss due to the multiple conversions between DC and AC.
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Types of Home Batteries
Battery: AC-Coupled
- An AC-coupled home battery can often be added to your solar power system at a later stage.
- How it works: Solar panels (DC) → (micro)inverter (AC) → battery (DC) → home appliances (AC).
- This involves three conversions.
Battery: DC-Connected
- To use a DC-connected home battery, you will need a hybrid inverter.
- How it works: Solar panels (DC) → inverter OR battery (DC) → home appliances (AC).
- This involves just one conversion.
Material of a Home Battery
Most home batteries are made from lithium iron phosphate (LiFePO4), a material that has gained popularity in recent years due to its high energy density and long lifespan. Lithium-ion batteries, which are commonly used in cell phones and electric cars, also share similar characteristics. Additionally, saltwater batteries are gaining traction in the market. While lead-acid batteries have been around for decades, newer and more efficient alternatives, such as lithium iron phosphate home batteries, are now available. These are the types of batteries OptimaSolar works with.
Home Battery Solar Panels: Capacity and Power
Most home batteries are modular, meaning you can expand your system in the future if needed. The capacity of a home battery refers to the maximum amount of energy it can store. However, the actual usable energy is slightly lower than the battery’s total capacity, as the battery should never be fully drained—similar to a car’s fuel reserve. If a battery is completely discharged, it can be damaged. Thankfully, the battery management system (BMS) ensures the battery operates safely and efficiently.
The maximum capacity of a home battery also determines how quickly it can charge and discharge power. If you choose a high-capacity, low-power battery, it will provide a smaller amount of power over a longer period. On the other hand, a low-capacity, high-power battery will provide more power, but only for a shorter time. It can supply your entire home but for a few hours at most. This distinction between the two types of batteries is known as high voltage and low voltage batteries.
Home Battery Price
Purchasing a home battery is a valuable investment that requires careful consideration. Prices can vary significantly depending on factors such as the type of battery, the brand, and the storage capacity you select. Given the importance of this investment, we recommend requesting an on-site quote. This allows us to better understand your specific situation, including your current inverter, meter box setup, and any other relevant details to ensure we offer the best solution tailored to your needs. At OptimaSolar, we partner with trusted brands like Enphase, APsystems, SolarEdge, Dyness, AlphaESS, and Sessy to provide high-quality energy storage solutions.
Financial Options for Your Home Battery
It is not necessary to tap into your savings to purchase a home battery. The government aims to ensure that everyone has the opportunity to become more sustainable. To facilitate this, the National Heat Fund was established in 2013, providing financing for home sustainability projects through the Energy Savings Loan. This loan offers a fixed interest rate for the entire duration of the loan, ensuring stable monthly payments.
If the combined income of your household is below €60,000 per year, you may qualify for an interest rate as low as 0%. The maximum loan amount available for purchasing a home battery is €8,500.
Home Battery and Dynamic Energy Contract
With a dynamic energy contract, your home battery gains the ability to engage in power trading. The battery recharges with your self-generated power during periods when the electricity tariff is negative, and discharges during times of high prices or enters the imbalance market. This creates an opportunity to potentially earn income through the use of your home battery. It’s a powerful and innovative combination!
Would you like to receive a quote from OptimaSolar for a home battery? Please provide your details, and we will get back to you shortly!
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We are very happy with our solar installation from OptimaSolar. Wim took the time to meet us at our house to give us advice and estimations. The work was carried out very neat and tidy and Wim himself... [ lees meer ]
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Got quotes from 3 other solar panel vendors, found optima solar the best for the price i paid. Panels were installed ontime with the perfection.... After sales support is also excellet. Thankyou.
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