When the solar batteries are full, there is no way to deal with the excess power solar system itself, this is because the solar system is designed with the idea of how to have the maximum power generation efficiency in mind and does not take this into account. However, in order to ensure that the benefits are maximized, we will introduce you to the solution.
Feedback to the grid: If your solar panel system is a hybrid solar system, when your solar batteries are full, your excess power will be directly input to the grid, effectively avoiding the waste of solar power. Your meter will also show reverse power, recording your contribution to the grid in your account so that you can take advantage of discounted electricity rates. However, if your solar system is off-grid, the excess power cannot be fed into the grid.
Inverter Power Reduction: If your solar system is off-grid, the solar inverter will reduce its power after the solar batteries are full, slowly utilizing the solar energy for the solar batteries to avoid wasting solar energy.
Air Compression: Air compression uses air as an energy storage medium that can be used as a driving force for excess electricity, compressing the air into a high-pressure container for storage and then converting it into electricity through a turbine generator when it is needed. The storage process is more cumbersome and requires more equipment, and the corresponding cost will also increase.
Hydrogen energy storage: solar energy through the decomposition of water to make hydrogen, realizing the solar energy into hydrogen energy, applicable to areas that can not directly use solar energy. However, this process requires the assistance of other equipment, the cost is higher, and is not suitable for widespread use.
Overcharging of solar batteries: If your solar batteries do not have a battery control system, your solar battery may continue to charge after they are full, resulting in overcharging of the solar battery and a reduction in the service life of the solar battery. But if your solar system is equipped with a battery control system, you don’t have to worry about it.
Wasted energy: If you don’t take steps to utilize the excess solar energy when the solar batteries are full, you’re wasting both the electricity and the heat from the solar energy. In this way, the economic benefits generated by your solar system will be greatly reduced.
Excess power returned to solar panels: Returning excess power to solar panels has a low conversion rate between them. If the solar battery then wants to use this part of the electricity, it is almost impossible to charge the solar battery much.
Sell solar panels: The number of solar panels has a direct impact on the amount of power generated, you can choose to sell solar panels to solve this problem. But you may think that the market of used solar panels is not so good, which is a wrong belief. This is a wrong belief. There are a lot of people who are willing to opt for used solar panels as compared to the high price of new solar panels. If your used solar panels are still performing well, you can still get a decent amount of money for them.
Use larger capacity batteries: It is not the small capacity of your solar battery that makes them always full, it is time for you to use larger capacity solar battery. This way you will be able to solve the problem of solar batteries always being full of the root cause.
Increase the load: The solar battery always gets full, it may also be because your load is low, the solar power use is low, most of it is stored in the solar battery, which leads to this situation. You can increase the load usage to use up the solar power generation and avoid this situation.
Once the solar batteries are full, you can choose other ways to store solar energy or use up the excess solar power. Of course, you can also choose to reduce the number of solar panels or increase the capacity of solar batteries.
