Voltcast
API for 15-minute European power prices and probabilistic forecasts across 47 bidding zones
| What is it | API for 15-minute European power prices and probabilistic forecasts across 47 bidding zones |
|---|---|
| Pricing | Freemium — from €9/mo |
| Free tier | Yes |
| Platform | API |
| API | Yes |
| Works with | n8n |
| Best for | scheduling EV charging during cheapest price windows, optimizing battery storage dispatch |
| Domain registered | 2020 |
Data updated Aug. 1, 2026
What does Voltcast do?
Voltcast is an API that delivers 15-minute European power prices and probabilistic forecasts for 47 bidding zones. It covers day-ahead auction results, intraday spreads, imbalance prices, wind and solar generation forecasts, and cross-border flows — all updated in real time. The platform also offers a free live map showing current prices and physical power flows, plus a trading desk demo with error bars on every tile.
What sets Voltcast apart is its in-house Volt model family — six generations of gradient-boosted quantile models trained on load forecasts, weather data, grid conditions, and calendar structure. Every forecast includes a P10–P90 distribution, not just a single point estimate. The company publishes daily accuracy scores against free baselines, and if a zone's forecast doesn't beat the baseline, that zone is free. Webhooks deliver auction results in under 60 seconds, and the API includes optimization endpoints that turn price curves into cheapest-window schedules for EV charging or battery dispatch.
Voltcast is built for energy traders, battery storage operators, renewable energy developers, and anyone navigating Europe's increasingly complex power markets. Use cases include scheduling EV charging during the cheapest 15-minute windows, optimizing home or grid-scale battery revenue, hedging price risk with probabilistic forecasts, and analyzing historical market data back to 2015. Plans start at €9 per month with a free forever zone and no credit card required.
Key features
What makes it stand outWho is Voltcast for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardFree
- Any 1 zone — your choice (prices, history & grid data)
- 48h P50 forecast — every zone, with attribution
- 7 days of history
- Load, generation & carbon
- MCP server for AI agents
Home
Everything in Free, plus:
- Everything in Free
- 1 zone, your choice
- 7-day P50 forecast
- 90 days of history
- Carbon & green score
- Daily zone briefing
- 1 webhook rule
Quant
- Full quantiles (P10/P50/P90)
- Wind & solar forecasts
- Optimization endpoints
- The Voltcast Desk
Trust & presence
Gallery
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