Energy information appears directly on Zillow property pages
Free browser extension that displays comprehensive energy information for properties on Zillow, including utility providers, Time-of-Use electricity rates, and EV charging costs
⬇️ Download for Chrome
Energy information appears directly on Zillow property pages
Automatically identifies the electric utility serving each property using OpenEI's comprehensive database
Displays detailed TOU rate structures with peak/off-peak pricing for major California utilities, with automatic seasonal adjustments
Calculates the cost to fully charge popular electric vehicles like Tesla Model Y (75 kWh) and Ford Mustang Mach-E (88 kWh)
Shows both summer and winter rates based on current date, ensuring accurate cost estimates year-round
Notes when Community Choice Aggregators may serve the property, helping you understand your energy options
Identifies the balancing authority region with WattTime integration for grid emissions data
Utility & Rate Data
Grid Emissions Data
Geocoding Services
Official Rate Schedules
Download the extension
Download from GitHub or install from Chrome Web Store (coming soon)
Load in Chrome
Open chrome://extensions/, enable Developer mode, and click "Load unpacked"
Browse Zillow properties
Navigate to any property on Zillow and energy information will appear automatically
Optional: Set up WattTime
Click the extension icon and register for WattTime to enable grid emissions data
This extension is for informational and educational purposes only. The energy rate data, utility information, and cost calculations provided should not be relied upon for making financial, real estate, or other important decisions. Rate information may be outdated or inaccurate. Utility rates change frequently and vary by location. Always verify current rates and programs directly with your utility provider before making decisions.
Your privacy is important. This extension operates entirely on your device.