How Solar Batteries Work to Help You Gain Energy Independence
When people hear the words solar batteries, it’s easy to conjure up an image of something similar to a car battery installed in your home. However, today’s solar system batteries are more similar to cell phone or computer batteries based on their components, not based on size. Today’s batteries are constructed of lithium-ion offering greater energy storage per square foot and weight.
What Types of Different Batteries are There?
Solar batteries are traditionally AC- coupled or DC- coupled. In the case of AC- coupled batteries, solar power gathered throughout the day is converted through a grid connect inverter from DC to AC, before the battery inverter converts the power to DC power and stores it in the batteries. When energy is needed, the inverter converts it back to AC power to supply to the load.
DC- coupled solar batteries directly channel solar power to a solar battery charger, regulating how the batteries are charged. Because solar panels produce DC power and batteries store DC power, there is no need to convert the power.
How Residential Solar Batteries Work
Throughout the day, your residential solar power system collects energy from the sun and then sends that energy to its batteries for either storage or immediate use. SunPower systems integrate with various kinds of solar batteries allowing more freedom for homeowners.
Once the batteries collect the power, intelligent software automatically manages which power source you’re connected to and drawing energy from. Your home could be connected to the power grid or it could be drawing power from the batteries in your solar system. So on a cloudy day, if your battery is not full, you may be drawing power from the grid to keep the lights on in your home or to power your water heater. When homeowners’ batteries are full, the energy necessary to power their home is drawn from batteries, not the grid. This allows them to save money by not drawing power from the grid provided by the electric company. Similarly, these batteries can help offset peak energy usage at night when people are home from work.
As homeowners’ energy needs change, they can scale up their solar power system to meet their changing energy needs. This includes adding more solar panels and batteries to meet these changing energy needs. If a homeowner suddenly makes an electric vehicle purchase and needs to charge it, their residential solar power system will be able to meet the increase in demand for energy.
With the power of solar system batteries, homeowners can become less reliant on grid power, lowering bills. Eventually, as they generate more energy and more energy is stored, they can also sell energy credits back to the electric company. The answer to energy independence and significant savings lays in the form of the clean renewable energy of solar.