Volcast - Solar Forecast

Maximize your solar investment with Volcast – the ultimate PV production forecast tool.
 
Stop guessing when the sun will power your home. Volcast provides an accurate, hour-by-hour solar production forecast for your PV system, covering today and the next 7 days. Designed by solar owners for solar owners, Volcast helps you align your energy-heavy tasks with peak production windows to maximize self-consumption.
 
SMART HOME & HOME ASSISTANT INTEGRATION
Volcast features a professional REST API for Home Assistant users. Export your forecast data directly to your HA dashboards to automate your smart home based on solar availability.
 
ADVANCED PHYSICS-BASED ENGINE
We combine real-time satellite irradiance data with a high-fidelity physics engine. We account for:
 
Multi-String Support: Perfect for complex east-west or multi-roof systems.
 
Bifacial Panels: Specialized modeling for modern modules.
 
AI Auto-Calibration: Our algorithms learn your system's performance over time.
 
Horizon Profiling: Accounts for shading from terrain and obstacles.
 
KEY FEATURES:
 
7-Day Precise Forecast: Hour-by-hour power prediction.
 
Hourly View Toggle: Switch each hour between forecast, actual production, and the difference at a tap.
 
Multi-Device Sync: Production history and calibration stay in sync across every device you sign in on.
 
Notification Center: Evening forecasts, snow warnings, and peak window alerts.
 
Privacy First: Secure processing, no ads, no third-party tracking.
 
PLANS & PRICING:
 
Free: 48-hour high-accuracy forecast.
 
Premium (monthly or yearly): Full 7-day forecast, AI calibration, and Home Assistant API access. Start with a 7-day free trial.

Terms of Use: https://volcast.app/terms
Privacy Policy: https://volcast.app/privacy

Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. You can manage subscriptions in your App Store account settings.