Solar Panels System Cost and Pros & Cons in 2021

If you are looking for ways to take your home’s energy efficiency to the next level while also increasing the value of your property, then installing PV solar panels on your home’s rooftop is likely one of the top options you are considering.

In this guide, we explore the current cost per watt, total solar system cost, available tax credits, net metering, pros and cons, and whether going solar makes sense for your home.

Cost

Solar costs are typically quoted per watt installed. The current national average cost of a solar panels system can range from $2.80 to $3.50 per watt installed (before the 26% solar investment tax credits), depending on the project size, panel type, accessibility and location. This price range captures approximately 80% of all residential solar installations in the US for a system size between 5kW and 10kW of solar-generating capacity.

What is a Typical Solar System Size?

A typical residential solar power system size averages between 5kW (5,000 watts) and 8kW (8,000 watts), depending on the size and span of the roof surface and household needs.

How Many Solar Panels Do I Need?

Assuming a typical 5kW-6kW solar system, you will need between 14 and 20 panels for a complete system.

If you are using conventional panels with 250 watts of solar-generating capacity, then you will need 20 panels.

SunPower Equinox High Efficiency Solar Panels

If you are using high-efficiency solar panels like those offered by SunPower with 370 watts of solar-generating capacity, then you will only need 14 panels for a 5kW system.

High-efficiency panels are generally a good option for rooftops with limited space.

Read more