| parameter,value_low,value_central,value_high,unit,role,source,source_date,basis |
| dc_energy_total,,485,,TWh/yr,naive_pool,"IEA, Key Questions on Energy and AI",2026-04-16,2025 outturn; +17% on 2024 |
| global_electricity,,28200,,TWh/yr,scale_denominator,"IEA, Electricity 2026",2026-07-22,2025 consumption (not generation) |
| energy_pool,150,235,320,TWh/yr,parameter_1,"IEA, derived carve",2026-07-22,request-serving DC slice + server-side fixed network |
| bot_fraction_wholehttp,,0.328,,share,parameter_2,Cloudflare Radar API (first-party pull),2026-06-01,whole-network HTTP; trailing 28d |
| bot_fraction_webapp,,0.53,,share,parameter_2,"Imperva (Thales), Bad Bot Report 2026",2026-04-29,web-application frame; 2025 data; up from 0.51 |
| bot_fraction_html,,0.575,,share,not_used,Cloudflare Radar dashboard,2026-06-03,HTML-content frame only; documented, outside the bound |
| idle_fraction_f,0.3,,0.5,share,parameter_3,"LBNL, US Data Center Energy Usage Report: 2025 Update",2026-06-18,conventional servers; 30% floor; expert ceiling 50% |
| utilisation_u,0.1,,0.5,share,parameter_3,real-world server utilisation,2026-07-22,carried from v1; not re-verified at primary |
| allocation_marginal,0.1,0.2,0.4,ratio,parameter_3,"derived: (1-f)u/[f+(1-f)u]",2026-07-22,marginal over average; 0.4-0.5 treated as upper tail |
| allocation_average,,1.0,,ratio,parameter_3,by definition,2026-07-22,the attributional reading |
| cf_requests_per_sec,,81000000,,req/s,bottom_up,Cloudflare Radar,2026-06,carried from v1; NOT re-verified at primary in v1.2 |
| cf_web_share,0.20,,0.241,share,bottom_up,W3Techs,2026-07-22,"24.1% of all websites; frame caveat: sites, not requests" |
| joules_per_request,0.5,,5.0,J/req,bottom_up,engineering order-of-magnitude estimate,2026-07-22,uncited and unsegmented; the weakest input |
| electricity_price,,70,,USD/MWh,economic_check,working assumption,2026-07-22,sniff-test only |
| bot_mitigation_tam,0.8,,1.3,USD bn/yr,economic_check,vendor market sizing,2026-07-22,motive-flagged; defensive floor |
| bot_intensity_weight,0.8,1.0,1.9,ratio,parked_v2,"Wikimedia: bots ~65% of resource-intensive traffic vs ~35% of pageviews",2025-2026,NOT in the bound; single media-heavy corpus; unverified at primary |
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