PJM Data Center Electricity Prices
Wholesale electricity price tracker for PJM and ERCOT — the two largest US data center power markets. Day-ahead LMP/SPP trends reveal whether AI load growth is translating into measurable grid price stress.
Last Updated: 2026-02-27
Data As Of: H1 2025 (PJM), CY2024 (ERCOT) (30-day rolling window)
Sources: PJM Data Miner, ERCOT MIS — all free, public, clickable.
PJM Western Hub
$51.75/MWh
DA LMP, 30d avg
ERCOT Houston Hub
$28/MWh
DA SPP, 30d avg
PJM YoY Change
+63%
vs same period LY
DC Premium (est.)
~12%
qualitative only
Wholesale Price Comparison — PJM vs ERCOT
| Hub / Series | Current ($/MWh) | 1Y Ago ($/MWh) | YoY Change | 5Y Avg ($/MWh) |
|---|---|---|---|---|
| PJM Western Hub DA LMP | $51.75 | $31.70 | +63.2% | $~35 |
| ERCOT Houston Hub DA SPP | $28.00 | $55.00 | −49% | $~38 |
⚠️ DC premium: qualitative only, not scored
The data center premium over base industrial rates is estimated from public PPA disclosures and industry reports. It is not independently verifiable at scale and does not feed into the AISI composite score. Only the PJM/ERCOT wholesale price YoY change drives the Price & Risk component.
Price Trend Context
Rising wholesale prices in data-center-heavy regions are an early indicator of grid stress. When demand growth outpaces generation additions, prices rise — signaling that the market is tightening before physical reliability events occur.
Key drivers of PJM price increases include: data center load growth in Northern Virginia, coal and nuclear plant retirements, and interconnection queue delays for replacement generation. ERCOT prices are influenced by similar dynamics plus Texas-specific factors (weather extremes, limited interconnection with neighboring grids).
AISI Price & Risk Formula:
score = clamp(yoyChangePct × 3, 0, 100)
Only PJM Western Hub YoY change is used. DC premium is qualitative context only.
Methodology — v0.1-beta
This page tracks wholesale electricity prices using publicly available data from PJM and ERCOT. All prices are day-ahead market prices (LMP for PJM, SPP for ERCOT), reported as 30-day rolling averages for smoothing.
Data Sources:
- PJM Data Miner — Western Hub Day-Ahead LMP
- ERCOT Market Information — Houston Hub Day-Ahead SPP
Known Limitations:
- Hub prices are zonal averages; actual nodal prices at data center substations may differ significantly.
- Day-ahead prices do not capture real-time volatility or capacity market costs.
- Data center electricity costs include transmission, distribution, and capacity charges not reflected in wholesale LMP/SPP.
- Seasonal and weather effects can dominate short-term price movements, masking structural trends.
- This is an experimental research tool (v0.1-beta). Not investment advice.
📎 Cite This Data
AhaSignals. (2026). PJM Data Center Electricity Prices. Retrieved from https://ahasignals.com/pjm-data-center-electricity-prices/
Frequently Asked Questions
Why are PJM electricity prices important for AI infrastructure? ▾
PJM covers Northern Virginia (Loudoun County), the world's largest data center market with over 70% of global internet traffic routed through it. Rising wholesale prices in PJM signal that data center demand is outpacing local generation capacity — a leading indicator of AI infrastructure stress.
What is the data center premium on electricity prices? ▾
Data centers often pay a premium over base industrial rates due to high reliability requirements, dedicated substation costs, and long-term PPA structures. This premium is estimated at ~12% based on public PPA disclosures, but is qualitative only — it is not independently verifiable at scale and is not used in AISI scoring.
Is this investment advice? ▾
No. This page is an independent research audit produced by AhaSignals for educational purposes only. It does not constitute investment advice.
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