Most Efficient Rooftop Solar Panels for Homes

In simple terms, the efficiency of a solar panel can be described as the percentage of incoming sunlight that gets converted into electricity. High efficiency modules tend to be more expensive, but they also use space more efficiently, generating more watts per square foot covered. This is a major benefit when you have limited roof space for solar panels, or when you want an installation to be as compact as possible.

source: SunPower

When comparing solar panels, keep in mind that efficiency is not equivalent to product quality. You can also find lower efficiency solar panels of great quality, in case you have ample rooftop space and want to reduce your total project cost. Do keep in mind that you will get fewer kilowatt-hours per square foot with less-efficient modules.

Here we will review the top 5 most efficient solar panels available today, and the typical costs you can expect when purchasing them. We will also highlight other strong points they offer, in addition to high efficiency. The most efficient solar panels that are commercially available range from 21% to 23%, with SunPower leading the way at 22.8% conversion efficiency.

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What New Roofing System Should I Get Before Installing Solar Panels?

“Is my roof suitable for solar panels?” You have probably asked yourself this question if you’ve been considering a photovoltaic system for your home.

Luma Solar Roof
source: Luma Solar

The good news is that you can install solar panels on almost any roof, as long as they have a suitable racking system.

For example, you can use clamps if you have a standing seam metal roof, or penetrating mounts for shingle and tile roofs. Ballasted mounts are also viable if you have a flat roof, although this is less common in residential settings.

Having an asbestos roof is one of the main factors that can limit the use of solar panels. While the installation is technically possible, most solar contractors will decline this type of work due to the health risks involved.

The fibers released when drilling asbestos can be extremely hazardous if inhaled, and this is not only a health risk for installers, but also for anyone living in the home. Asbestos can stay in your body for years without symptoms, and then cause severe lung issues without warning.

Even if you have an asbestos-free roofing system, you need to consider three important things about solar panels:

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What Tax Benefits Do I Get for Going Solar?

Most homeowners and businesses who install solar panels have the goal of reducing their monthly power bills. Solar power can also reduce the environmental footprint of a property, which is a great feature in locations with clean energy mandates.

Governments are becoming more aware of the benefits of solar energy, and they may also offer tax benefits for individuals and corporations who use it. The US has a nationwide tax incentive for solar power, which is officially called the Federal Solar Investment Tax Credit (ITC).

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