Installing an on-grid solar panel system is one of the simplest and most affordable ways for homeowners to reduce electricity bills and move toward clean energy. This complete cost guide explains how on-grid solar systems work, what equipment is included, and how pricing is calculated based on system size, roof type, and electricity usage. You’ll learn about key cost components such as panels, inverters, mounting structures, wiring, approvals, and installation labor, along with the hidden costs that some quotations may not show.