Grid-tied Solar Power System
-Without Batteries
In this setup, any excess solar energy generated during the day is returned to the grid, and you get paid for it. At night or on cloudy days, energy is drawn from the grid. This is a cost-effective option as it avoids the high cost of batteries, while also saving on maintenance expenses.
Grid-tied Solar Power System
-With Batteries
Adding batteries to the system enables energy independence, especially during power outages. Batteries allow you to store excess energy generated during the day and use it when solar power is low, such as at night or during storms. While a battery system is useful, it adds significantly to the initial cost.
Off-grid Solar Power System
In an off-grid solar power system, batteries are essential because there is no connection to the utility grid. This setup is typically used in remote areas where grid power is unavailable. These systems require enough battery storage to meet energy needs during low-sunlight periods, as well as possibly backup generators.