No, an on grid solar system does not work at night. On grid solar systems are connected to the electric grid and rely on the availability of sunlight to generate electricity. They use photovoltaic (PV) panels to convert sunlight into electricity during the day. When the sun is shining, the solar panels produce direct current (DC) electricity, which is then converted into alternating current (AC) electricity using a solar inverter. This AC electricity can be used to power electrical appliances in your home or business.
However, at night or in the absence of sunlight, the solar panels do not receive any light and are unable to generate electricity. In these situations, an on grid solar system typically relies on the electric grid for power. Most on-grid solar systems are designed to be net-metered, which means that when they generate excess electricity during the day, it can be fed back into the grid for credit. This credit can then be used to offset the electricity consumed from the grid during the night or periods of low solar production.
On grid solar system is suitable for to reduce the electricity bill. If you want to have electricity during the night or when the sun is not shining, you will need to consider other solutions such as energy storage systems like batteries, or rely on electricity from the grid. Energy storage systems allow you to store excess solar energy generated during the day for use at night or during cloudy periods when solar production is low.