Solar energy systems are often connected to the utility grid, utilizing solar panels to generate electricity from sunlight. The most common setup is a grid-tied system, which connects directly to the utility grid and can operate with or without battery backup equipment.
According to the National Electric Code, when the utility grid goes down, a grid-tied solar system must also shut off. This means that during a power outage, even with solar panels installed, you may not have electricity unless your system includes battery storage. A battery allows stored energy to be used during outages.
A property with a grid-tied solar system is linked to the local power company’s line. This setup enables users to offset their electricity bills using solar energy while still relying on traditional services. It is an effective way to reduce electric costs.
In contrast, an off-grid solar system functions independently from the utility grid. It uses solar panels for power generation and transfers this energy into batteries via a charger controller. Kokosing Solar mentions that they do not install off-grid systems nor recommend them if there is already access to the grid due to their complex engineering and installation requirements.
Off-grid systems need careful planning of both the solar array and battery bank size to ensure sufficient support throughout different seasons. They also typically require a generator for charging batteries when sunlight is insufficient.
For those who want reliable power even during outages, pairing a grid-tied system with battery backup offers self-reliance at night or on cloudy days. Although more costly, such setups provide electricity continuity when the main grid fails.
Kokosing Solar emphasizes that while standalone solar panels won’t function during outages without batteries, combining them allows continued operation by directing generated electricity either homeward or into storage devices.
Ultimately, opting for a grid-connected solar system can lead to cost savings through reduced reliance on external power sources and lower energy bills. However, these systems depend on an operational utility grid for continuous supply unless supplemented by batteries.
For individuals seeking complete independence from the utility company’s service interruptions, an off-grid solution remains viable but requires thorough preparation and additional resources like generators.
