Technology is both a major driver of climate change and one of the most powerful tools for fighting it. The information and communications technology sector alone accounts for an estimated 2.1% to 3.9% of global greenhouse gas emissions when full supply chains are counted, roughly on par with the aviation industry. At the same time, technology has made clean energy the cheapest form of new electricity generation on Earth and enabled efficiency gains across agriculture, transportation, and power grids that would have been unimaginable a few decades ago.
Technology’s Own Carbon Footprint
Every search query, video stream, and cloud backup runs through a data center. Globally, data centers consume about 415 terawatt-hours of electricity per year, roughly 1.5% of the world’s total. That figure is climbing fast as artificial intelligence workloads explode. Training a single large AI model can consume as much electricity as dozens of homes use in a year, and the infrastructure needed to support millions of simultaneous AI queries is pushing tech companies to build new power plants.
Cryptocurrency mining adds another significant layer. Bitcoin mining alone used an estimated 120 to 170 terawatt-hours in 2023 and 2024, with the United States hosting about 38% of that activity. To put that in perspective, Bitcoin’s electricity demand rivals the annual consumption of entire countries like Argentina or Norway, and this estimate doesn’t include other proof-of-work cryptocurrencies.
Beyond energy use, about 70% of the tech sector’s emissions come from actually powering devices and infrastructure, while the remaining 30% is embedded in manufacturing. Mining rare earth metals, assembling chips in energy-intensive factories, and shipping devices worldwide all generate emissions before a product is ever turned on.
The E-Waste Problem
The world generated an estimated 62 million tonnes of electronic waste in 2022. Only 22.3% of that was formally collected and recycled. The rest ended up in landfills, was incinerated, or was informally processed in ways that release toxic chemicals and greenhouse gases. Short product lifecycles, planned obsolescence, and the sheer volume of consumer electronics mean this number keeps growing. Each discarded phone or laptop represents not just waste but all the carbon that went into extracting, refining, and assembling its materials, emissions that are effectively thrown away when products aren’t recovered.
How Technology Made Clean Energy Cheaper Than Fossil Fuels
Perhaps the single most important way technology has positively impacted climate change is by making renewable energy the cheapest option for new power generation. Onshore wind now costs an average of $0.034 per kilowatt-hour globally, and solar photovoltaic comes in at $0.043 per kilowatt-hour. Both consistently undercut new natural gas and coal plants in most markets. These prices would have seemed absurd 15 years ago, when solar was roughly ten times more expensive. The decline is almost entirely the result of technological improvements: better cell efficiency, thinner materials, automated manufacturing, and smarter installation processes.
Battery storage has followed a similar curve. Lithium-ion battery packs averaged around $100 to $120 per kilowatt-hour in 2025, down from over $1,100 per kilowatt-hour in 2010. That cost drop is what makes electric vehicles competitive with gasoline cars and allows grid operators to store solar power generated at noon for use after sunset. Stationary storage packs for the grid are falling even faster, with many procurement deals landing below $100 per kilowatt-hour. Cheap batteries solve renewable energy’s biggest weakness: intermittency.
Smarter Grids, Less Waste
Traditional power grids lose a surprising amount of electricity between the power plant and your outlet, mostly as heat in transmission lines and inefficiencies in distribution. Smart grid technology, which uses sensors, automated controls, and real-time data analysis, can cut distribution losses by up to 30% through better system balancing and power factor optimization. That’s energy that was already generated but simply wasted. Across an entire national grid, a 10% to 15% improvement in overall electricity productivity translates to millions of tonnes of avoided emissions without building a single new power plant.
Smart thermostats, LED lighting controlled by occupancy sensors, and building management systems that learn usage patterns all chip away at energy waste on the demand side. These aren’t headline-grabbing technologies, but collectively they represent one of the most cost-effective ways to reduce emissions.
Precision Agriculture and Farming Emissions
Agriculture is responsible for roughly a quarter of global greenhouse gas emissions, with fertilizer use being a major contributor. When nitrogen fertilizer breaks down in soil, it releases nitrous oxide, a greenhouse gas nearly 300 times more potent than carbon dioxide. Precision agriculture technologies, including GPS-guided tractors, soil sensors, drone imaging, and variable-rate application systems, deliver exactly the amount of fertilizer each section of a field needs rather than blanketing the whole area uniformly.
Studies show precision techniques can reduce fertilizer use by about 15% and crop protection chemicals by about 20% without hurting yields. The World Economic Forum has estimated that if 15% to 25% of farms adopted precision agriculture by 2030, the sector could cut greenhouse gas emissions by 5% to 10%. Current adoption in Europe has already trimmed agricultural emissions by an estimated 1.5% to 2%. Those percentages sound modest, but applied to one of the largest sources of global emissions, they represent substantial reductions.
Carbon Capture and Removal Technology
Some of the most ambitious climate technologies aim to pull carbon dioxide directly out of the atmosphere. Direct air capture (DAC) plants use chemical processes to extract CO2 from ambient air, which can then be stored underground permanently or used in industrial applications. The cost has been the main barrier. Early estimates placed it at $600 or more per ton of CO2 removed, but recent engineering advances have brought costs down to between $94 and $232 per ton, with projections suggesting sub-$100 capture is achievable at scale.
Even at $100 per ton, DAC remains far more expensive than simply not emitting in the first place. But for emissions that are extremely difficult to eliminate, like those from cement production, long-haul aviation, and certain agricultural processes, removal technology may be the only viable path to net zero. Several large-scale DAC facilities are now under construction or in early operation, backed by both government funding and corporate carbon credit purchases.
The Net Effect
Technology’s relationship with climate change isn’t a simple good-or-bad story. The same semiconductor industry that enables solar panels and smart grids also powers data centers with growing energy appetites. The lithium batteries making electric vehicles possible require mining operations with their own environmental costs. And the global shipping network that delivers efficiency-boosting devices to farms and factories runs largely on fossil fuels.
What the data shows, though, is that the balance is shifting. The emissions generated by the tech sector (2% to 4% of the global total) are increasingly offset by the far larger reductions technology enables across energy, transportation, agriculture, and building efficiency. The cost curves for clean energy and storage continue to fall. Precision tools are reducing waste in every sector they touch. The critical variable now is speed: whether clean technologies can scale fast enough to outpace the growing energy demands of AI, data infrastructure, and a digitally connected global population.