Observed Signal · Sep 27, 2024 · Analysis · Source: Horizont · Impact: 2/5 · Sentiment: Positive
How Much CO2 Does a Website Produce?
Guest author Dr. Torsten Beyer explains how websites contribute to greenhouse-gas emissions and how companies can estimate and reduce that footprint. The piece outlines four sources of website emissions — data centres, data transfer, end devices, and hardware production/maintenance/disposal — and notes that hosting typically creates Scope‑3 (indirect) emissions. The Green Web Foundation’s Sustainable Web Design Model sets a conversion factor of about 360 g CO2e per gigabyte transferred; average single-page load sizes are around 2.5 MB. Tools like the Website Carbon Calculator grade pages (A+ to F) and can provide initial estimates. Significant reductions (50%+) are often achievable by using modern image, font and video formats and by reducing unnecessary data transfers. The article also links accessibility and sustainability, noting that upcoming regulation on accessibility will further affect site design choices.
Raises practical awareness and measurement methods for website CO2 emissions relevant to web development, sustainability reporting and corporate climate strategy, but does not report a major platform policy change or regulation.
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Key Takeaways & Evidence Grounding
- Websites produce CO2 emissions from four areas: data centres, data transfer, end devices, and hardware production/maintenance/disposal.
- Hosting websites in external data centres generally places their emissions in Scope‑3 (indirect) emissions accounting.
- The Green Web Foundation’s Sustainable Web Design Model uses a conversion factor of 360 grams CO2e per gigabyte of data transfer.
- Average page weight for a single webpage view is about 2.5 megabytes; the Website Carbon Calculator classifies pages at or above this size as class F.
- Using modern image, font and video formats can typically cut website data transfer — and thus emissions — by 50% or more.
Connected Companies & Entities
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Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
Google launches unified agentic AI for Gemini
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AWNY, Jupiter Fest Spotlight Agentic Ads and Open Web
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ICANN Receives 1,615 New Top-Level Domain Applications
The Internet Corporation for Assigned Names and Numbers (ICANN) has accepted applications for new generic top-level domains (gTLDs) for the first time since 2012. A total of 1,615 applications were submitted by 481 applicants, with a strong focus on AI-related domains. Ten companies, including Meta and OpenAI, applied for .agent, seven for .agi, and six for .asi. Meta filed 21 applications, including .instagram and .threads, while OpenAI filed 15, including .chatgpt and .codex. German entities like Adidas, Biontech, and Allianz also applied for brand-specific domains. The application fee can be up to $227,000 per domain. The article also highlights the financial success of country-code TLDs like .ai, which earned Anguilla about €59 million by November 2025.
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