Platform Overview
How It Works
WattMarkets aggregates real-time electricity prices from 7 U.S. Independent System Operators and transforms raw data into actionable grid intelligence.
Core Capabilities
Real-Time Prices
Live electricity prices updated every 5 minutes from ERCOT, PJM, CAISO, NYISO, ISO-NE, MISO, and SPP.
ISO Price Averages
Average prices across settlement points for each ISO, updated every 5 minutes with highs, lows, and trends.
Material Changes
Automatic detection of price spikes, collapses, and significant percentile jumps across all ISOs.
Settlement Reference
Authoritative historical prices from official ISO sources for auditing and reference.
Price Alerts
Configurable alerts when prices cross thresholds. Get notified via email or webhook.
API Access
RESTful API and Server-Sent Events for real-time integration into your applications.
How Data Flows
Data Collection
We poll official ISO feeds every 5 minutes for real-time prices and daily for settlement data.
Normalization
Raw data is normalized to consistent units ($/MWh), timezones (UTC with local conversion), and formats.
Analysis
ISO averages and material changes are computed in real-time based on settlement point prices.
Distribution
Data is available via REST API, Server-Sent Events for real-time streaming, and the web dashboard.
ISO Coverage
ERCOT
Texas
PJM
Mid-Atlantic & Midwest
CAISO
California
NYISO
New York
ISO-NE
New England
MISO
Central U.S.
SPP
Great Plains
Each ISO includes multiple settlement points representing major load zones and trading hubs. See our data sources for complete coverage details.
Use Cases
Prediction Market Settlement
Verify grid event outcomes for Kalshi, Polymarket, and similar platforms using our authoritative settlement reference.
Energy Trading
Monitor real-time price movements and market conditions across multiple ISOs from a single dashboard.
Operational Awareness
Set up alerts to be notified when prices spike or grid conditions become elevated in your service territory.
Research & Analysis
Access historical settlement data via API for academic research, backtesting, and market analysis.