Illinois homeowners are paying some of the highest electricity rates on the East Coast. Solar panels are becoming the answer to that. Bifacial solar panels in Illinois, built to capture sunlight from both the front and rear surfaces, are showing up in more installation conversations across the state.
But are Bifacial Solar Panels Worth It in Illinois? The answer depends on more than the technology itself. Roof type, mounting setup, surface reflectivity, and local incentives all factor in. Here is what Illinois homeowners need to know before making the call.
What Makes Bifacial Solar Panels Different?
Generally, Solar panels absorb sunlight from one side only. Bifacial panels happen to have photovoltaic cells on both the front and rear surfaces, with a transparent backing that allows reflected light to reach the second layer of cells. The result is a panel that works harder in the same footprint. The technology has existed since the 1960s, but gained real commercial momentum only in the early 2000s.
According to Green Fuel Journal, bifacial panels account for nearly 70% of new module production worldwide as of 2026, a number that was barely 10% just five years ago.
The Massive Generation of Power
It is quite obvious to ask how they generate so much power. The answer lies simply in rear surface captures light reflected off the ground, rooftop, concrete, or nearby surfaces. A phenomenon known as the albedo effect. As per Science Direct, with a Bifacial factor at play, it becomes easier for the panel to generate at least between 65% and 90%.
Especially if it is placed a bit higher or installed over reflective surfaces. Mind you, the word here is “can”. Performance is not fixed and shifts considerably based on what sits beneath the panel.
How Does The Illinois Climate Affect Bifacial Performance?
Illinois sits in a strong position when it comes to solar overall. The state receives an average of 4.5 peak sun hours per day, which is enough to make solar financially attractive for most households.
Four distinct seasons, however, create both opportunity and limitation for bifacial output specifically. Hot, humid summers push panel temperatures up, which can slightly reduce efficiency. Fall and winter bring mixed cloud cover and shorter days. It really helps, especially during snowfall. That advantage is more significant than most homeowners expect.
1. Snow and Reflectivity Advantage
Rear-side performance is entirely dependent on how much light bounces back up toward the panel. Fresh snow has an albedo of 0.80 to 0.90, reflecting 80 to 90% of incoming light. One of the strongest natural reflectors available, giving bifacial panels a meaningful rear-side gain during winter months.
Illinois sees regular snowfall across most of the state between December and February. During those stretches, bifacial panels on ground mounts or on elevated rooftops capture reflected energy that standard panels miss.
2. Pricing Of Bifacial Panels in Illinois
Bifacial panels carry a modest premium over standard monofacial options. The cost gap is real but narrowing as manufacturing scales and specialized mounting becomes more standardized. Homeowners, instead of focusing on upfront costs, should consider the additional production the rear side delivers for that specific property and installation type.
3. Incentives That Make Solar Panels Worth More
Illinois’s incentive stack is one of the strongest in the mid-Atlantic. Net metering credits excess solar energy at the full retail rate, directly offsetting monthly bills. The SREC program awards certificates for every megawatt-hour produced, which homeowners can sell for additional annual income. The state also provides a full sales tax exemption on solar equipment and a property tax exemption on the added home value solar brings.
Do Bifacial Panels Earn More SRECs?
Arguably, Yes. SRECs are tied directly to production volume, so a higher-output bifacial system generates more certificates annually. Pair that with full retail-rate net metering and rising electricity rates across the state, and the financial case for bifacial strengthens considerably over the system’s lifetime.
So, Which One Is Better?
The context of installation decides the factor. Bifacial panels deliver strong returns on ground-mount systems, elevated tilt mounts, and flat commercial roofs with white membrane. Standard flush rooftop installs on dark shingles are better served by quality monofacial panels at a lower cost per watt.
Are Bifacial Solar Panels Worth It in Illinois? The Bottom Line
For the right property, absolutely yes. Bifacial panels make strong financial sense for ground-mount setups, elevated rooftops, and commercial properties where rear-side gain is fully realized.
For standard residential flush-mount installs on darker roofing, the premium is harder to recover within a typical payback window. Illinois’s solar energy tax credits and incentive programs add further weight to the investment for homeowners who qualify. A property-specific assessment is the smartest first step before making any decision. Check out our website to learn more!
FAQs:
What is a bifacial solar panel? A bifacial solar panel captures sunlight from both front and rear surfaces, generating more energy than standard single-sided panels in the same footprint.
Do bifacial panels perform well in Illinois winters? Yes. Snow-covered ground reflects light onto the rear surface, giving bifacial panels a meaningful production boost during Illinois’s colder winter months.
Are bifacial panels more expensive than standard solar panels? They carry a modest upfront premium over standard panels. The right installation conditions allow that cost difference to recover over time.
What roof type works best for bifacial solar panels? Light-colored or elevated rooftops work best. Dark, flush-mounted roofs significantly limit rear-side light capture and reduce overall bifacial performance gains.
Does Smart Sky Solar install bifacial panels in Illinois? Yes. Smart Sky Solar provides site-specific assessments and installs bifacial panels suited to your Illinois home’s roof, budget, and energy goals.