# Nexenergie

> Forecast Spanish electricity prices for OMIE day-ahead and intraday markets.

- [Introduction](https://docs.nexenergie.ai/index.md): Forecast Spanish electricity prices for OMIE day-ahead and intraday markets.
- [What Is Nexenergie? OMIE Price Forecasting Platform](https://docs.nexenergie.ai/introduction.md): Nexenergie forecasts Spanish OMIE electricity prices using ML models, weather data, and ENTSO-E fundamentals — available via REST API or dashboard.
- [Get Started with Nexenergie: First API Call in 5 Minutes](https://docs.nexenergie.ai/quickstart.md): Sign up for Nexenergie, generate your API token, and retrieve your first day-ahead electricity price forecast for the Spanish OMIE market.
- [Authenticate with Nexenergie: Bearer Tokens and API Keys](https://docs.nexenergie.ai/authentication.md): Learn to obtain a Bearer token or API key for Nexenergie, handle token expiry, and correctly format credentials in every API request you send.
- [Contact Nexenergie Support by Email](https://docs.nexenergie.ai/support.md): Email support is available 24/7. We answer within one business day at support@nexenergie.ai.
- [Spanish OMIE Electricity Markets and Trading Sessions](https://docs.nexenergie.ai/concepts/markets-and-sessions.md): Understand the Spanish OMIE electricity market structure: the day-ahead market and intraday sessions 1 through 3, and how Nexenergie covers them.
- [How Nexenergie Electricity Price Forecast Models Work](https://docs.nexenergie.ai/concepts/forecasting-model.md): Learn how Nexenergie uses machine learning models trained on weather, market, and power-system data to produce hourly electricity price forecasts.
- [Weather, OMIE, and ENTSO-E Data Sources for Forecasting](https://docs.nexenergie.ai/concepts/data-sources.md): Nexenergie ingests weather forecasts, historical OMIE prices, and ENTSO-E fundamentals to feed its ML models. Learn what data drives your forecasts.
- [Forecast Accuracy Metrics: MAE, RMSE, and MAPE Explained](https://docs.nexenergie.ai/concepts/accuracy-metrics.md): Nexenergie tracks MAE, RMSE, and MAPE for every forecast session. Learn to read accuracy metrics and evaluate model performance for your trading decisions.
- [Fetching Day-Ahead Price Forecasts via the OMIE API](https://docs.nexenergie.ai/guides/fetching-forecasts.md): Step-by-step guide to calling the Nexenergie day-ahead forecast endpoint and processing the hourly EUR/MWh price array in your application.
- [Fetching Intraday Session Forecasts from Nexenergie](https://docs.nexenergie.ai/guides/intraday-sessions.md): Learn how to retrieve intraday price forecasts for OMIE sessions 1, 2, and 3 using the Nexenergie API, including session numbering and timing guidance.
- [View Forecasts and Accuracy Metrics in the Dashboard](https://docs.nexenergie.ai/guides/using-the-dashboard.md): Navigate the Nexenergie web dashboard to view forecast charts, compare predictions to actual OMIE prices, and monitor recent model accuracy.
- [Interpreting Nexenergie Forecast Results Effectively](https://docs.nexenergie.ai/guides/interpreting-results.md): Learn to read Nexenergie forecast fields, weight confidence intervals, and use accuracy metrics for better trading decisions in OMIE markets.
- [Manage Your Nexenergie Account Settings and Profile](https://docs.nexenergie.ai/account/manage-account.md): Update your email, change your password, and manage security settings from the Nexenergie dashboard. Keep your account credentials secure.
- [Create and Manage Nexenergie API Keys for Secure API Access](https://docs.nexenergie.ai/account/api-keys.md): Generate long-lived API keys from the Nexenergie dashboard to authenticate programmatic requests without re-issuing tokens every 24 hours.
- [Multi-Tenant Access Control and Organisation Management](https://docs.nexenergie.ai/account/multi-tenant.md): Nexenergie supports multiple organisations on a single platform. Learn how tenant isolation works and how to manage access within your organisation.
- [REST API Overview: Base URL, Versioning, and Rate Limits](https://docs.nexenergie.ai/api-reference/overview.md): Overview of the Nexenergie REST API: base URL, versioning, request conventions, rate limits, and pagination for electricity price forecast endpoints.
- [Nexenergie API Authentication — Tokens and API Keys](https://docs.nexenergie.ai/api-reference/authentication.md): Reference for the POST /auth/token endpoint and the Authorization header required on every Nexenergie API request. Covers token expiry and API keys.
- [API Error Codes, Response Formats, and Troubleshooting](https://docs.nexenergie.ai/api-reference/errors.md): Reference for all Nexenergie API HTTP status codes and JSON error response formats, with causes and recommended fixes for each error type.
- [GET /forecasts/day-ahead — Day-Ahead Price Forecast](https://docs.nexenergie.ai/api-reference/forecasts/day-ahead.md): Retrieve hourly day-ahead electricity price forecasts for the Spanish OMIE market. Returns 24 hourly EUR/MWh values with confidence bounds.
- [GET /forecasts/intraday/{session} — Intraday Forecast](https://docs.nexenergie.ai/api-reference/forecasts/intraday.md): Retrieve hourly intraday price forecasts for OMIE sessions 1, 2, or 3. Returns remaining-day hourly EUR/MWh forecasts with confidence bounds.
- [GET /market/prices — Historical OMIE Market Prices](https://docs.nexenergie.ai/api-reference/market/prices.md): Query historical cleared electricity prices from the Spanish OMIE day-ahead and intraday markets. Filter by session, date range, and hour.
- [GET /market/fundamentals — ENTSO-E Power System Data](https://docs.nexenergie.ai/api-reference/market/fundamentals.md): Retrieve the ENTSO-E power-system fundamentals currently used by Nexenergie models: load forecasts, generation mix, and cross-border flows.
- [GET /metrics/accuracy — Forecast Accuracy Statistics](https://docs.nexenergie.ai/api-reference/metrics/accuracy.md): Retrieve MAE, RMSE, and MAPE accuracy metrics comparing Nexenergie forecasts to actual OMIE settled prices across sessions and date ranges.
- [GET /metrics/model-performance — Version Comparison](https://docs.nexenergie.ai/api-reference/metrics/model-performance.md): Compare forecast accuracy across Nexenergie model versions to track improvements over time and validate that newer models perform better for your market.