Require Tier 4 emission standards, metered runtime and permit-before-operate enforcement for on-site combustion
#00222
Set a Tier 4 baseline for new generators, meter and publish runtime hours, define emergency narrowly so scheduled outages do not qualify, and enforce permits before equipment operates. Virginia adopted a 0.60 g/hp-hr baseline from July 2026.
xAI; regulated by Mississippi DEQ and, for the Memphis site, the Shelby County Health Department · since 2025 · City
The clearest documented failure of permit-before-operate enforcement for data centre on-site generation, across two adjacent jurisdictions in the same metropolitan area.
Turbines installed at the Memphis site15 permitted → 35turbines
Turbines observed operating the day before the permit issuedat least 24turbines
3 sources