HB 585 Data Center Amendments
HB 585 is a grid transparency bill. It does not regulate emissions, but it creates a structured reporting pipeline that allows the Legislature and regulators to understand how large data centers are affecting electricity demand and infrastructure. From an air quality standpoint, the bill’s value lies in enabling informed future policy decisions rather than producing immediate emission reductions.
Indirect Impact
The bill is significant from an air quality and energy-planning perspective because large data centers can represent extremely high and concentrated electricity demand (10 MW+ per facility). In Utah, additional load on the grid may be met through:
- Increased generation from fossil fuel plants (natural gas or coal)
- New utility-scale generation projects
- On-site generation, which could include natural gas combustion
- Renewable energy procurement
If demand growth is met primarily with fossil generation, there could be:
- Increased NOx and SO₂ emissions (affecting winter inversions and ozone formation)
- Increased greenhouse gas emissions
- Potential localized emissions from on-site backup generators or self-generation facilities
Conversely, if growth accelerates renewable deployment or incentivizes grid modernization, the long-term air quality impact could be neutral or even positive.
The bill’s most important air quality contribution is that it creates data visibility. By requiring disclosure of self-generation fuel types and total system demand, policymakers will be able to assess:
- Whether data center growth is driving new fossil generation
- Whether self-generation includes combustion sources
- The cumulative grid impact of rapid high-load development
For a state like Utah where winter PM2.5 and summer ozone are already significant concerns, understanding large new electricity loads is essential for long-term air quality planning.
Sponsors
Rep. Dominguez
Position
Support
Status - Not Considered
2/18 Introduced
2/23 To House Public Utilities
3/4 Returned to Rules
