Do you know batteries can save you from the tensions of continuously increasing hikes in electricity bills? Batteries are an excellent home investment and can save money by reducing monthly electric bills.
The reduction in monthly electricity bills depends upon the number of batteries and your decision to install a solar system with a grid-tied or off-grid system. Adding battery backup for your solar system is a considerable investment, especially if you go with an off-grid system.
What is A Battery Backup?
A battery backup is a system in which you connect batteries to your solar system. These batteries store sun energy more than your daily usage, and you can use this energy when you need it, such as at night and on stormy and dense cloudy days.
Battery Backup Explanation?
A battery backup system stores excess solar energy and can use it later when needed. Batteries may be
- AC-coupled
- DC-coupled
DC-coupled batteries store energy in DC form while AC-coupled batteries store the AC current. You must call an expert to select which one is suitable for your system. For pre-installed solar systems, AC-coupled batteries are more suitable.
Types of Batteries
There are four main types of batteries.
- Lithium-ion
- Lead-acid
- Nickel-cadmium
- Flow batteries
Lithium Ion Batteries features
The basic structural chemistry of these batteries consists of nickel-manganese-cobalt, lithium polymer, and lithium iron phosphate. The advantage of using this type of battery is that it reduces the risk of catching fire. Moreover, their one charging cycle is longer than any other battery.
The degradation of the stored energy is very rare in these batteries. You can easily use 90% store energy of Lithium batteries.So they are suitable for residential use. However, these batteries are expensive and prone to degradation in extreme hot temperatures.
Lead-acid batteries Features
This type of battery’s prominent feature is that it is acid-sealed and reduces the risk of acid spillage during maintenance. They are less costly and easily available in the market. However, they can not meet the Lithium-ion batteries in energy efficiency. They are also usable for the residential projects due to low prices.
Nickel-cadmium batteries Features
Their working capacity is above all other batteries because they are made up of lead and acid. These batteries are durable, have long life cycles, and require less maintenance. They are widely used in industrial and commercial projects.
Flow Batteries
These batteries are less effective for residential use because their structure is designed to be suitable for commercial use. However, the manufacturers are also planning to make it effective for residential use.
How Does Battery Backup Work?
Batteries backup energy for your needy times such as dawn and dusk, stormy days and rainy weather. You can use battery backup energy according to your need. Moreover, at the time of local grid outage, you have a secure backup system for the power supply for your home.
Batteries allow you to go completely out of connection from the grid. But this depends upon the size of your backup system and the daily use of your home. Batteries are a primary storage option in those areas of the USA, where local utilities offer very low rates for net metering, or there is no net metering.
Why Should Add A Battery Backup to a Solar
Some people think that battery backup is unnecessary when installing a solar system and also remaining connected to the grid. Are battery backups necessary only when opting for off-grid solar installation? If yes, then you are not right. Let’s make it clear to you.
Suppose you have a grid-tied solar system and a grid outage in your area. The solar system will automatically shut down during a grid outage, and there will be no power at your home. The two disadvantages of grid-tied solar systems without battery backups are
-
- You can not send the excess energy of the solar system to the grid at grid shutdown time.
- The grid is down, so you can not use the energy that you have already sent to the grid, and there will be a complete blackout at your home
To avoid these scenarios, battery backups are the best option.
So, whether you plan to do grid-tied solar installation or without grid-tied solar installation, batteries attached to the solar system are great investments.
Increasing Demand of the Batteries
The demand for battery backups is increasing day by day. This is because utility companies are enhancing power supply prices. It is a very good decision if you are also planning to connect a battery backup with your system. There are some factors that you should consider while thinking about the battery installation such as
Factors to Consider When Adding A Battery to Your Solar System
The demand for battery backups is increasing day by day. This is because utility companies are enhancing power supply prices. It is a very The cost of batteries is very high.
Although various incentives and rebates are available for battery installation, the prices are still high. Batteries are considered a one-time investment, and you should choose them carefully. Before purchasing a solar system, you must consider the following essential factors.
Energy Needs
Daily energy needs are the prime factor to consider when buying a battery for your home. You can analyze your daily energy consumption by reading daily utility units from your meter or your monthly electricity consumption through your monthly bills. This will help determine which power (KW) battery can meet your home needs.
Grid Outage Rate in Your Area
If you live in a state where grid blackout days are standard and remain for days, you must have more batteries to become entirely energy-independent. However, if the rate of grid shutdown is rare, you can go for fewer batteries.
Lifespan of Batteries
Solar batteries usually last 3-15 years. If you buy a battery of low quality, you may spend more money on maintenance or even have to buy a new battery after a few years. So, always try to buy a high-quality battery from a reputable and trustworthy manufacturer.
Batteries Types
Batteries may be sealed or flooded. Sealed batteries have their electrolytes in a stable gel or electrolytes, while flooded ones are open with portable caps. You have to open the caps and fill the distilled water within the batteries. According to safety measures, sealed batteries are more secure, but they are a little bit expensive compared to flooded ones.
Warranty of the Batteries
Over time, the battery loses its capacity to hold a charge, and efficiency decreases. The average warranty of batteries from reputable manufacturers is ten years. Always try to purchase a battery from a manufacturer who is assured about the warranty.
Batteries Vs. Solar Systems Size
The size of the solar system is directly linked to the selection of the batteries. If you have a larger-sized solar system that produces a hefty amount of surplus energy, larger batteries are required to save the energy. For example, a typical 5KW solar system is sufficient to charge one battery after fulfilling your home needs.
Voltage of Battery and Inverter
The voltage of the battery and inverter should be the same for the proper working.
Incentives and Tax Reduction in Your Area
Incentives and batteries can reduce the initial cost of the solar system. Usually, the Federal tax credit, which is almost 30%, is applicable in all states. Various areas offer local incentives and rebates for battery purchases. Moreover, many manufacturers offer special discounts for battery purchases on specific occasions.
Therefore, research regional incentives and rebates for the batteries, check the rates for various manufacturers in your area and then purchase from the manufacturer that offers a more suitable priceood decision if you are also planning to connect a battery backup with your system. There are some factors that you should consider while thinking about the battery installation such as
Where can you install a solar battery?
The demand for battery backups is increasing day by day. This is because utility companies are enhancing power supply prices. It is a very gThe cost of batteries is very high. Although various incentives and rebates are availaThis is also a very important consideration to save your home and loved ones from any potential hazards when installing batteries at home.
According to the National Fire Protection Association (NFPA), all individuals must follow the NFPA 855 Standard for installing Stationary Energy Storage Systems. This act states that all solar systems ranging from 5 kW TO 20 KW come under residential setup, and the residents can install them in their garage, utility rooms, or any room in the house. If you plan to place the battery in the room, your walls should be protected by fire-proof sheets such as gypsum.
What to consider when choosing a battery location
- It would help if you considered some important factors when choosing a solar battery location for a residential place.
- If you live in an area with high rainfall annually, do not put the battery outdoors.
- Batteries are easily degradable by high temperatures. So, make sure that the sun does not hit the batteries.
- If you are living in an area near the sea, then never place your battery outdoors because it can generate current.
- Always select a location where the movement of the house residents is less, such as a store room or the utility room.
- Some batteries are very heavy to install. So, always call a professional engineer who will inspect your home and select the place suitable for the heavyweight batteries.
- Batteries get hot and emit glass, so there should be proper ventilation to avoid the accumulation of gasses and any loss.
- If you have more than two batteries, maintain a three-foot distance among all batteries.
- Always choose a location that is easily accessible to avoid any hurdle for maintenance.
Never place the battery with any combustible material. If your house has a woody structure then place a non-combustible floor mat on before placing the battery.ble for battery installation, the prices are still high. Batteries are considered a one-time investment, and you should choose them carefully. Before purchasing a solar system, you must consider the following essential factors.
Cost To Add a Battery to a Solar System?
The cost of the battery is 8500$ to 10,000$. This cost is without installation charges.
Besides installation, some other additional charges, such as a permit to install batteries and connect your battery to the grid system, can affect the overall cost of the solar system. Moreover, battery cost depends upon the capacity and the size of the battery.
Can We Add Battery Backup to an Existing Grid-Tied Solar System
Do you want to add battery backup for your existing grid-tied solar system? Well, this is possible but expensive. The connection of the battery with the existing grid-tied system is known as AC-coupled battery backup.
In this process, an additional inverter is attached to the solar system because your existing inverter does not produce the power for battery backup when the grid is out.
Factors to Consider When Adding a Battery to Solar System
The cost of batteries is very high. Although various incentives and rebates are available for battery installation, the prices are still high. Batteries are considered a one-time investment, and you should choose them carefully. Before purchasing a solar system, you must consider the following essential factors.
Energy Needs
Daily energy needs are the prime factor to consider when buying a battery for your home. You can analyze your daily energy consumption by reading daily utility units from your meter or your monthly electricity consumption through your monthly bills. This will help determine which power (KW) battery can meet your home needs.
Grid Outage Rate in Your Area
If you live in a state where grid blackout days are standard and remain for days, you must have more batteries to become entirely energy-independent. However, if the rate of grid shutdown is rare, you can go for fewer batteries.
Lifespan of Batteries
Solar batteries usually last 3-15 years. If you buy a battery of low quality, you may spend more money on maintenance or even have to buy a new battery after a few years. So, always try to buy a high-quality battery from a reputable and trustworthy manufacturer.
Batteries Types
Batteries may be sealed or flooded. Sealed batteries have their electrolytes in a stable gel or electrolytes, while flooded ones are open with portable caps. You have to open the caps and fill the distilled water within the batteries. According to safety measures, sealed batteries are more secure, but they are a little bit expensive compared to flooded ones.
Warranty of the Batteries
Over time, the battery loses its capacity to hold a charge, and efficiency decreases. The average warranty of batteries from reputable manufacturers is ten years. Always try to purchase a battery from a manufacturer who is assured about the warranty.
Batteries Vs. Solar Systems Size
The size of the solar system is directly linked to the selection of the batteries. If you have a larger-sized solar system that produces a hefty amount of surplus energy, larger batteries are required to save the energy. For example, a typical 5KW solar system is sufficient to charge one battery after fulfilling your home needs.
Voltage of Battery and Inverter
The voltage of the battery and inverter should be the same for the proper working.
Incentives and Tax Reduction in Your Area
Incentives and batteries can reduce the initial cost of the solar system. Usually, the Federal tax credit, which is almost 30%, is applicable in all states. Various areas offer local incentives and rebates for battery purchases.
Moreover, many manufacturers offer special discounts for battery purchases on specific occasions. Therefore, research regional incentives and rebates for the batteries, check the rates for various manufacturers in your area and then purchase from the manufacturer that offers a more suitable price.
Can I Use Solar Panels Without a Solar Battery?
Yes, you can use solar panels without a solar battery. Many homeowners need batteries to start using solar systems.
However, having battery backups is beneficial because it makes you self-sufficient for your energy needs, and you do not need to worry about the continuously changing net metering laws and prices in the country. Let’s discuss the advantages of battery backups.
Advantages of Battery Backups
Do you ever wonder why I need a battery for my solar system when I already use the sun’s renewable green energy? Well, if your solar system produces more power than your daily use, what should you do with it? Yes, you can send it to the grid for net metering.
But does this net metering benefit you on cloudy days when local grids fall for days? No, net metering will not help you in this scenario. So, it is better to have a solar system with battery backup to save your energy by yourself instead of sending it to the grid. This will make you energy-independent 24/7/365.
Having batteries with your solar system helps you in many ways. Following are the few prominent benefits of battery backups.
1.Energy Independent
The batteries store the energy for your backup needs, and you can use this energy at any time. This eliminates your dependency on the grid system for the power supply. Moreover, you can use this energy on cloudy days and at night.
2.Get Rid of Electricity Bills
Completely relying on the battery backup is a very good option because it helps you to be free from the tensions of the increased electricity prices. No supply from the grid, so there is no need to worry about the electricity bills.
3.Real Monitoring for Your Daily Use
With the battery backup and its integration with the apps, the solar system allows you to monitor your production and usage simultaneously. For example, you can monitor and use heavy-voltage appliances when there is more energy production.
Conclusion
Batteries are a great source of energy independence.They store excessive energy and you can produce sufficient energy for your usage. The average cost for the battery installation is 8500$ to 10,000$. Battery backups are very good sources of independent and self-sufficient energy.
You can also install the battery backup for your existing solar system. However, it would help if you considered a few factors, such as the suitability of the solar panels for battery integration, rewiring for battery and new inverter connections, battery location, and regulatory compliance in your area. Moreover, analyzing your daily needs and energy-sufficient requirements are other important factors before purchasing a solar battery.
Frequently Asked Questions:
If you live in an area without net metering, or the utility companies offer very low rates for net metering then batteries are a good option to save and use excess energy at night or on cloudy days.
Batteries can store energy and provide backup for cloudy days, nighttime, and stormy days. They help reduce your carbon footprint and make you a proud resident who relies on green energy. In addition, batteries prevent you from the tensions of the electricity bill prices that are increasing daily.
Batteries are costly to install in the pre-existing solar systems and the new solar system as well. However, they are worthy of installation to get the energy advantages in the long run.
Yes, you can use the solar panels and inverters without the battery. However, batteries are recommended as a safe side for energy backups.