Real-Time Grid Intelligence

See grid conditions clearly.
Act before prices spike.

WattMarkets aggregates real-time data from all 7 U.S. ISOs to surface price signals and grid stress indicators. Faster visibility. Fewer surprises.

No credit card required
ERCOTPJMCAISONYISOISONEMISOSPPHOUNSWAENCPSLCRARAYPGESCESDGEVEAAMILALEALWDINCONSDTEEAIELAIPLMECMGENIPSXCLWECWPSAECGRDAKCPLLESNPPDOG&ESWPAUCU OMPAGSEC
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Price ($/MWh)
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Market Overview

Live
Free

Price spikes, collapses, and regime shifts — when they happen.

How It Works

From Data to Signal

Public ISO data, normalized and structured into interpretable signals.

Grid Stress Index

Price percentile (60%) combined with volatility (40%). A single number indicating grid state: normal, tight, or stressed.

Material Changes

Only meaningful moves surface — spikes, collapses, regime shifts. If nothing changed, it says so explicitly.

Point Detail

Click any node for granular stats: hourly high/low, daily average, current price with historical percentile.

Free API Access

Build on WattMarkets

Email-gated, no credit card required. Real-time grid data for your applications.

Endpoints
GET/api/v1/alerts/prices/latestpublic
GET/api/v1/prices/summarypublic
GET/api/v1/grid/changespublic
GET/api/v1/settlement/{iso}/{node}/{date}limited
Settlement Layer

Verifiable Records

Timestamped, immutable price records. For prediction market settlement, auditing, and authoritative reference.

Permalinks for every ISO/node/date
Direct links to ISO source data
API endpoints for automated resolution
Explore Settlement Data
ERCOT / LZ_HOUSTON / 2025-01-15
Verified
Max Price
$247.50
/MWh at 17:45 CT
Daily Avg
$82.34
/MWh
Record IDa3f8c2d1...e9b7
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