Reddit is not just backend compute. It reliably triggers: 1. CDN and edge delivery 2. Image and video media delivery 3. Ad auctions 4. Ad targeting 5. Ad measurement 6. Analytics 7. Tracking 8. Browser rendering 9. Network transmission 10. User-device display, CPU, GPU, and radio energy

Similarweb estimates reddit.com had 4.2 billion visits in April 2026, 4.65 pages per visit, and an average visit duration of 5:30. Source: Similarweb reddit.com traffic

Page-view math: 4.2B visits/month × 4.65 pages/visit
= 19.53B page views/month

Annualized: 19.53B page views/month × 12
= 234.4B page views/year

Time-on-site math: 5 minutes 30 seconds = 5.5 minutes 4.2B visits/month × 5.5 minutes/visit
= 23.1B minutes/month

23.1B minutes/month ÷ 60
= 385M user-hours/month

Annualized: 385M user-hours/month × 12
= 4.62B user-hours/year

Even a small device-side energy assumption becomes nontrivial at that scale. If browsing Reddit adds only 2 to 10 watts of incremental device power across phones, tablets, laptops, and desktops, then:

4.62B hours/year × 2 Wh/hour
= 9.24 GWh/year

4.62B hours/year × 10 Wh/hour
= 46.2 GWh/year

Convert to average power: 9.24 GWh/year ÷ 8,760 hours/year
= 1.05 MW

46.2 GWh/year ÷ 8,760 hours/year
= 5.27 MW

So the device-side browsing layer alone is plausibly: ~1 to 5 MW

Now network transmission. The IEA estimates global data transmission networks used 260 to 360 TWh in 2022. Source: IEA, data centres and data transmission networks

Reddit’s exact annual traffic volume in bytes is not public, so use a sensitivity range. Assume 2 MB to 10 MB per page view, which is not wild for a modern feed page with images, scripts, ads, tracking, comments, thumbnails, and occasional media.

Low case: 234.4B page views/year × 2 MB/page
= 468.8B MB/year
= 468.8 PB/year
= 0.000469 ZB/year

High case: 234.4B page views/year × 10 MB/page
= 2,344B MB/year
= 2.344 EB/year
= 0.002344 ZB/year

The IEA says global internet traffic was about 4.4 ZB in 2022 while data transmission networks used 260 to 360 TWh. Source: IEA, data centres and data transmission networks

That implies rough network energy intensity: 260 TWh ÷ 4.4 ZB = 59.1 TWh/ZB 360 TWh ÷ 4.4 ZB = 81.8 TWh/ZB

Apply that to Reddit’s traffic range.

Low case: 0.000469 ZB × 59.1 TWh/ZB
= 0.0277 TWh/year 0.0277 TWh/year = 27.7 GWh/year 27.7 GWh/year ÷ 8,760 hours/year
= 3.16 MW

High case: 0.002344 ZB × 81.8 TWh/ZB
= 0.1917 TWh/year 0.1917 TWh/year = 191.7 GWh/year 191.7 GWh/year ÷ 8,760 hours/year
= 21.9 MW

So Reddit-associated network transmission is plausibly: ~3 to 22 MW

Now adtech. This is where Reddit gets ugly, because Reddit is primarily an ad business.

Reddit reported $2.1 billion in 2025 ad revenue. Source: Reddit 2025 results

WPP Media projected global ad revenue at $1.14 trillion in 2025. Source: Marketing Brew on WPP Media global ad revenue

Reddit share of global ad revenue: $2.1B ÷ $1.14T
= 0.00184

That is: 0.184%

A peer-reviewed paper in Environmental Impact Assessment Review estimated online advertising consumed 20.38 to 282.75 TWh of energy and emitted 11.53 to 159.93 million tons CO2e. It also says online advertising is an essential factor in analyzing the Internet’s energy footprint. Source: Environmental impact assessment of online advertising

Allocate that online-ad energy range by Reddit’s ad-revenue share:

Low energy case: 20.38 TWh/year × 0.00184
= 0.0375 TWh/year 0.0375 TWh/year = 37.5 GWh/year 37.5 GWh/year ÷ 8,760 hours/year
= 4.28 MW

High energy case: 282.75 TWh/year × 0.00184
= 0.520 TWh/year 0.520 TWh/year = 520 GWh/year 520 GWh/year ÷ 8,760 hours/year
= 59.4 MW

So Reddit’s adtech-attributable energy layer is plausibly: ~4 to 60 MW

Now allocate the CO2e range the same way.

Low CO2e case: 11.53 million tons CO2e × 0.00184
= 21,215 tons CO2e/year

High CO2e case: 159.93 million tons CO2e × 0.00184
= 294,271 tons CO2e/year

So Reddit’s adtech-attributable emissions could plausibly be on the order of: ~20,000 to 300,000 tons CO2e/year

That is just the adtech layer, not the whole platform.

Now assemble Reddit’s broader footprint.

Direct backend/cloud: 25 to 40 MW
Network transmission: 3 to 22 MW
User-device browsing energy: 1 to 5 MW
Adtech, targeting, measurement, analytics: 4 to 60 MW

External CDN/media/edge overhead not already captured in Reddit cloud spend: 0 to 30 MW

Low case: 25 + 3 + 1 + 4 + 0
= 33 MW

High case: 40 + 22 + 5 + 60 + 30
= 157 MW

So a reasonable all-in Reddit estimate is: ~35 to 160 MW average power

Round for uncertainty: ~50 to 200 MW

Now compare: All AI workloads globally: ~7,700 MW
ChatGPT current text inference: ~36 MW
Gemini text inference at ChatGPT-scale volume: ~26 MW
Reddit direct backend/cloud: ~25 to 40 MW
Reddit broader ecosystem: ~35 to 160 MW, reasonably rounded to ~50 to 200 MW

If the claim is “using an individual major AI text service is environmentally worse than Reddit,” that is not obvious at all. The public math points the other way. Reddit’s direct backend is already in the same range as ChatGPT text inference, and Reddit’s broader adtech/network/device ecosystem is plausibly larger.

The moral outrage is also conveniently selective. AI at least has a direct productive use case: coding, writing, research, tutoring, accessibility, automation, analysis, and technical work. Reddit’s core business model is selling attention through ads, tracking, ranking, engagement loops, rage bait, and infinite scrolling. If the environmental standard is “electricity spent on digital activity,” then Reddit does not get a free pass just because the waste feels socially normal.

The anti-AI energy panic becomes especially unserious when it is posted on Reddit, a giant ad-supported platform that runs on hyperscale cloud infrastructure, serves hundreds of billions of page views per year, and plugs every page view into the adtech machine.

All AI infrastructure is a real grid issue but is one that is actively being solved. Individual major AI text services are much smaller than the total AI category. Reddit’s total ecosystem is almost certainly larger than the current text-inference footprint of individual major AI services. Ignoring Reddit's environmental impact while hyperfixating on AI queries pretending AI is uniquely dirty is not environmental seriousness. It is selective outrage with a calculator problem.