Overview

HiReNext is a pilot service built on the Destination Earth Service Platform (DESP) that helps transmission-system operators (TSOs) and grid engineers make real-time decisions about high-voltage overhead line capacity.

It combines DestinE climate data retrieved through the DESP Polytope API with a user-managed inventory of high-voltage spans (line segments defined by GPS coordinates) to deliver:

• Weather forecasts — up to 7-day, point-level forecasts of temperature, wind, humidity, pressure and precipitation along every span.

• Dynamic Line Rating (DLR) severity maps — pan-European visualisations that show, hour by hour, how ambient conditions affect the thermal capacity of overhead lines.

Key capabilities

Feature	Description
Span management	Upload and manage high-voltage line segments as collections of lat/lon coordinates (CSV or JSON). Each span is private to the authenticated user.
Weather forecasts	On-demand per-span forecasts for up to 7 days, covering six meteorological parameters sourced from the DestinE Extremes Digital Twin.
DLR severity map	Interactive European map coloured by a 5-level severity scale derived from temperature and wind speed. Refreshed automatically as new forecast data arrives.
Admin dashboard	Usage statistics (registered users, active users, spans uploaded, data retrievals) for service administrators.

Architecture overview

HireNext consists of two components:

• Backend — FastAPI application (Python) that authenticates users via the DESP Keycloak IAM, fetches forecast data from the Polytope API, persists spans and user events in PostgreSQL, and serves a REST API.

• Frontend — Next.js single-page application that provides the user interface: span management, forecast charts, and the DLR severity map.

Both components are deployed on the DESP Runtime Platform and are accessible through the DESP Web Portal.