An on-grid solar system is directly connected to the public electricity grid and does not include battery storage. It allows you to use solar power during the day and draw electricity from the grid when solar production is insufficient. Excess energy generated can often be fed back into the grid, potentially earning credits or compensation through net metering programs. However, these systems do not provide power during grid outages for safety reasons; they automatically shut down to protect utility workers.
In contrast, a hybrid solar system combines solar panels with battery storage and remains connected to the grid. This setup allows you to store surplus energy produced during the day in batteries for use during nighttime or periods of high demand. Hybrid systems offer greater energy independence and can provide backup power during grid outages by isolating from the grid (a process known as “islanding”) and utilizing stored energy. However, they are generally more expensive due to the additional cost of batteries and associated equipment.
Key Differences:
- Energy Storage: On-grid systems lack battery storage, relying solely on the grid when solar production is low, whereas hybrid systems include batteries to store excess energy for later use.
- Grid Outage Functionality: On-grid systems cannot operate during power outages, while hybrid systems can continue to supply power by drawing from battery storage.
- Cost: Hybrid systems are typically more expensive upfront due to the inclusion of batteries and additional components, compared to the more affordable on-grid systems
