Solar battery storage is a modern technology that helps you store energy generated by the solar panels. You can use this energy later instead of exporting it to the grid.
In a typical solar installation, the system generates excess electricity during the sunny hours. Now, this energy flows back to the utility grid. This can help you with net metering, but you will still have to buy electricity back from the grid at night (which will add up in your energy bills).
This storage system solves this problem by allowing the energy you generate to stay with you, so you can use it whenever you want.
How a Solar Energy Battery Storage Works
The working of a solar energy battery storage is really simple. A solar panel first captures sunlight. It then converts it into DC electricity. If the sunlight is strong, the energy generated may exceed the energy you consume during the day.
Now, this DC current is converted into AC electricity by a hybrid or battery inverter. This AC current ultimately powers businesses and homes.
Now, here comes the important part. When production exceeds consumption, the excess energy is stored in the battery system. Inside the battery, chemical energy is stored and can be converted back into usable electricity when needed.
Types of Solar Battery Systems
Not all systems are designed the same way or serve the same purpose. How a system is architected will determine how efficient or flexible it is.
First, we have AC-coupled solar storage that connects the battery to the inverter’s AC side. These are easy to install and expand. But they offer slightly lower efficiency because multiple steps are involved in the energy conversion process.
In DC-coupled systems, the batteries are connected directly to the solar panels (without an inverter). They have higher efficiency because only a single step is involved in energy conversion.
Lastly, the hybrid systems combine battery storage, solar generation, and grid connection. They offer the highest level of efficiency.
Types of Batteries Used in Those Systems
The storage systems also use different kinds of batteries based on your consumption patterns. Lithium-based batteries are the industry standard because they can last for several years while delivering high efficiency.
Lead-acid batteries were also common in off-grid solar systems. They have a lower upfront cost, but their lifespan is also shorter. A typical lead-acid battery can last 300-1000 cycles.
Benefits of These Systems
First of all, you’d reduce your dependence on unreliable utility grids and stay safe from power outages. You can use the stored energy during the expensive peak-rate hours at night, which will signficanlty lower your energy bills.
You’ll also get uninterrupted supply during power outages. Heavy loads, such as refrigerators and lighting systems, will continue to operate smoothly.
Final Thoughts
Installing the storage system is no doubt effective, but it’s important to choose a reliable inverter brand that can work with you through thick and thin. It’s the only way to get the most out of your storage system.