Solar Installers Modesto

Frequently Asked Questions About Solar Installers

What is the difference between grid-tied and off-grid solar systems?

Grid-tied solar systems are connected to the utility grid, allowing you to:

• Draw electricity from the grid when your solar panels aren't producing enough power (e.g., at night)
• Sell excess solar electricity back to the grid through net metering.

Off-grid solar systems are not connected to the grid and rely solely on solar panels and battery storage for electricity. They provide energy independence but require a larger upfront investment for batteries and a larger solar array.

What kind of warranty should I expect for my solar panel system?

You should expect two main types of warranties for your solar panel system:

• Solar Panel Warranty: From the panel manufacturer, typically covering defects in materials and workmanship for 10-25 years. Some manufacturers offer performance guarantees, ensuring a certain level of energy output over time.
• Solar Installation Warranty: From the solar installer, covering the quality of the installation work for 1-10 years. This warranty protects you from leaks, faulty wiring, or other issues caused by improper installation.

Always review the warranty documents carefully before signing a contract.

Will solar panels work during cloudy days or at night?

Solar panels still generate some electricity on cloudy days, although their output will be lower than on sunny days. They do not generate electricity at night. This is why battery storage can be a valuable addition to a solar energy system, as it allows you to store excess energy generated during the day for use at night or during periods of low sunlight.

How do solar panels work?

Solar panels work by converting sunlight into electricity using photovoltaic cells made of silicon. When sunlight hits a solar cell, it creates an electric current. Multiple cells are wired together to form a panel, and multiple panels can be combined to create a solar array.