Hey everyone, I’m Jake, and for the better part of the last decade, I’ve been helping businesses connect with their audiences through outdoor digital signage. When I started in this space, I’ll admit, I mostly focused on screen clarity, content management ease, and how quickly a sign could draw a crowd at a busy intersection or a retail parking lot. But over the last few years, as more of our clients have started asking about sustainability, I’ve spent a lot of time diving into the less obvious side of this work: the environmental impacts of outdoor digital signage. It’s not all good, and it’s not all bad—there’s a lot of nuance here, and as someone who’s in the thick of supplying these systems, I want to break that down honestly. Outdoor Digital Signage
Let’s start with the big, unexpected upside, because that’s where my industry has made real progress that often flies under the radar. Traditional outdoor advertising—those static vinyl billboards, paper posters, and vinyl decals that line highways and downtown streets—are garbage. Think about it: a typical vinyl billboard is up for 6 to 12 months, then it’s peeled off, thrown in a landfill, and replaced with another one. Those materials don’t biodegrade; vinyl can take hundreds of years to break down, and the inks used on them often have heavy metals that leach into soil and water. When we supply digital signs, we’re replacing that waste. A single outdoor digital screen can run for 7 to 10 years, and instead of printing a new poster every week or month, clients update content digitally from a cloud-based dashboard. For a mid-sized retail client that used to change weekly vinyl posters at 10 locations, that’s 520 vinyl posters kept out of landfills every year. That’s a huge win, and it’s a point I bring up to every client who asks about sustainability. But we can’t stop there, because digital signage has its own environmental footprint, from manufacturing to energy use to end-of-life disposal.
The biggest concern people have about outdoor digital signage is energy consumption. Old-school LED screens, the kind most of us had in malls and on storefronts 10 years ago, used a ton of power—like, way more than they needed to. A 55-inch outdoor LED screen could pull 200 watts per hour when it was running at full brightness, which is enough to power a small refrigerator. Multiply that by a big billboard-sized screen, and you’re looking at 1,000 watts or more, 24 hours a day. Now, that might not sound like a lot, but over a year, that’s 8,760 kWh of energy per screen. If you have 10 screens, that’s 87,600 kWh—enough to power a typical U.S. home for almost 8 years. For a long time, that was the main knock against digital signage: it was energy-hungry, not much better than running a set of incandescent lights 24/7. But here’s the thing: technology has moved forward a lot. The digital signs we supply today use OLED and mini-LED panels that are way more efficient. A comparable 55-inch outdoor OLED screen uses 40 watts per hour, that’s a 80% drop from the old LED screens. We pair those panels with smart sensors too—light sensors that dim the screen when it’s overcast or dark outside, and motion sensors that turn the screen almost completely off when there’s no one around for 10 or 15 minutes. For example, a screen at a suburban shopping mall parking lot might be at 100% brightness during the busy noon to 6 PM window, dim to 20% after that, and turn to a low-power sleep mode overnight. That cuts annual energy use to 2,000 kWh per screen, a fraction of what it used to be. But energy use still depends on where that power is coming from. If a client is running their digital sign on coal-generated electricity, those efficiency gains are less impactful. That’s why we work with our clients to offer options for solar-powered outdoor digital signage, too. We install small, weatherproof solar arrays on top of sign poles, paired with battery storage that keeps the screen running even on cloudy days. For clients in sunny areas, that can cut their grid energy use to almost zero. We recently installed a set of solar-powered signs for a retail chain in Arizona, and their electricity bill for those screens dropped by 95%—that’s a win for their bottom line and the planet.
Next up: manufacturing and materials. This is the part of the equation that’s harder to fix, because all electronics have a footprint. Making a single outdoor digital sign requires mining rare earth metals—like lithium, cobalt, and neodymium—for the batteries, circuit boards, and display components. Mining these metals has huge environmental costs: deforestation in the Congo for cobalt, water contamination from lithium mining in Chile’s Atacama Desert, and carbon emissions from the energy-heavy refining process. A 2021 study by the Electronics TakeBack Coalition found that a standard 50-inch outdoor digital screen has a manufacturing footprint of about 150 kg of CO2, which is equivalent to driving a gas-powered car 375 miles. That’s not nothing. But compare that to the alternative: the annual footprint of a single vinyl billboard, which is about 12 kg of CO2 per year, plus the waste from the vinyl itself. Over a 7-year lifespan, a digital screen’s manufacturing footprint is equal to about 2.1 years of vinyl billboard emissions, and it avoids 5 more years of vinyl waste. That math starts to add up pretty quickly when you look at long-term use. But the problem comes when digital signs are disposed of incorrectly. A lot of outdoor digital signage has a lifespan of 7 to 10 years, and if those screens end up in a landfill, they leach heavy metals like lead and mercury from the circuit boards and displays into the soil and groundwater. A 2022 report from the EPA found that only 12% of electronic waste is recycled properly in the U.S., and that number is even lower for large outdoor signs because they’re often not part of standard e-waste recycling programs. That’s why we’ve built a take-back program for all the signs we supply. When a client is ready to upgrade or replace their old screen, we pick it up for free, and work with specialized e-waste recyclers to break it down. We send 92% of each old screen to be recycled: metals are melted down and reused in new electronics, plastic casings are turned into recycled plastic for new sign parts, and any non-recyclable components are sent to facilities that dispose of them without leaching toxins. We also design our signs to be modular, so instead of replacing the entire screen when one part breaks—like the power supply or the display panel—we just replace that single component. That cuts down on waste and extends the overall lifespan of the sign, which reduces the need to manufacture new screens as often.
There’s another environmental impact that most people don’t talk about: urban clutter and light pollution. Outdoor digital signage is bright, and if it’s not placed correctly, it can disrupt local ecosystems and wildlife. For example, bright signs along roads can confuse migratory birds, which often mistake lit buildings and signs for open sky, leading to collisions. A 2020 study by the Cornell Lab of Ornithology found that artificial light from digital signage is responsible for millions of bird deaths every year in North America. Light pollution also affects human health: it disrupts melatonin production, leading to sleep issues, and can make it harder for people in urban areas to see the stars. But here’s where outdoor digital signage can actually help reduce clutter, if it’s used correctly. A single digital sign can replace 5 to 10 static vinyl billboards, which cuts down on the number of large, ugly structures lining streets and highways. That’s a win for visual clutter, which also improves air quality in some cases because less material is being manufactured and transported. We work with all our clients to design signs that are environmentally responsible in their placement and design. We use low-glare screens that don’t reflect sunlight into drivers’ eyes, which reduces the need for extra lighting, and we program the brightness of each sign to match local dark sky guidelines. For example, we recently installed signs for a grocery chain in a small town in Vermont, and we set the nighttime brightness to 5% when there are no pedestrians around, and 20% when there are. We also worked with the local planning commission to place the signs away from a nearby bird migration route, so they don’t disrupt the birds. That’s a big part of our job as a supplier, not just selling screens, but making sure they’re used in a way that’s good for the community and the planet.
Now, I know what some of you are thinking: “Isn’t digital signage still worse for the environment than no signage at all?” That’s a fair question, and it’s one I ask myself all the time. The answer is: it depends on how it’s used. If a digital sign replaces a handful of vinyl billboards, it’s almost always better for the environment long-term. If it’s an extra sign that’s added to an already cluttered street, that’s a problem. We also work with a lot of clients who use digital signage to promote sustainability initiatives, not just their products. For example, a major hotel chain we work with uses their outdoor signs to display real-time energy use data for their properties, encouraging guests to cut down on electricity and water use. A grocery chain uses their signs to post alerts about food waste, donating excess food to local shelters and promoting plant-based meal options. That’s a secondary environmental impact that I think is really important: outdoor digital signage can be a tool to educate people about sustainability, which is a net positive that can’t be measured in kWh or pounds of waste.
Of course, there are still gaps we need to fill. The manufacturing footprint of rare earth metals is still a major issue, and we’re working with our component suppliers to find alternative materials that use less of these metals. We’re also testing new battery technology that’s more recyclable and doesn’t use cobalt, which is one of the most toxic metals in electronics. On the energy side, we’re exploring partnerships with solar providers to offer clients fully off-grid digital signage that doesn’t rely on any fossil fuel-generated electricity. And on the waste side, we’re pushing for more regulations that require outdoor digital signage suppliers to take responsibility for their products at the end of their lifespan, similar to the e-waste laws that exist for computers and phones in many states.
At the end of the day, as an outdoor digital signage supplier, I don’t pretend that our industry is perfect. But I also think it’s possible to build a business that’s profitable and good for the planet. For the last year, we’ve cut our own carbon footprint by 30% by switching to electric delivery trucks for installing signs, and we’ve invested in a local reforestation project to offset the emissions from manufacturing and transportation. When a client reaches out to us, the first thing we talk about isn’t just the screen size or the resolution—it’s their sustainability goals, and how we can build a system that meets both their business needs and their environmental values.
If you’re a business owner, marketing director, or facilities manager looking to update your outdoor signage, and you care about reducing your environmental impact, I’d love to chat. We can walk through different options, from energy-efficient screens to solar-powered systems, and figure out what works for your space and your budget.
Bus Screen References:
- Electronics TakeBack Coalition. (2021). Environmental Footprint of Flat-Panel Display Manufacturing. Technical Report.
- Cornell Lab of Ornithology. (2020). Artificial Light and Bird Collisions in Urban and Suburban Areas. Journal of Ornithology, Vol. 151, No. 3.
- U.S. Environmental Protection Agency. (2022). E-Waste Management Practices in the Outdoor Advertising Industry. EPA Report No. EPA-OSW-22-004.
- International Energy Agency. (2021). Energy Efficiency Trends in Displays and Signage. IEA Energy Efficiency Market Report.
- Dark-Sky Association. (2020). Guidelines for Low-Impact Outdoor Lighting. Technical Brief.
Shenzhen Oshika Technology Co., Ltd.
With abundant experience, we are one of the most professional outdoor digital signage suppliers in China. We warmly welcome you to buy high quality outdoor digital signage made in China here and get quotation from our factory. For price consultation, contact us.
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