Interactive hexagonal overlay of 10,136 utility-scale solar PV plants (49 GW) across six Central European countries, built for the Windy.com weather platform.
Paste this URL into Windy Developer Mode:
https://windy-plugins.com/16844715/windy-plugin-eu-solar/2.1.1/plugin.min.js
- H3 Hexagonal Grid — 3,630 hex cells (res-4 + res-5) with plasma colormap showing capacity density
- 6 Country Toggles — CZ · DE · PL · AT · SK · HU
- Zoom-Adaptive Resolution — switches from res-4 (country view) to res-5 (regional detail) at zoom level 8
- Capacity Labels — MW values displayed on each hex cell
- Click for Details — popup with per-country breakdown and top plants per hex
- Coverage Gauge — mapped vs official installed capacity
| Country | Plants | Mapped | Official | Coverage |
|---|---|---|---|---|
| 🇨🇿 CZ | 598 | 2.9 GW | 5.3 GW | 55% |
| 🇩🇪 DE | 6,245 | 31.3 GW | 87.0 GW | 36% |
| 🇵🇱 PL | 2,386 | 9.3 GW | 17.8 GW | 52% |
| 🇦🇹 AT | 168 | 0.9 GW | 8.3 GW | 11% |
| 🇸🇰 SK | 176 | 0.9 GW | 1.7 GW | 53% |
| 🇭🇺 HU | 563 | 4.1 GW | 6.5 GW | 62% |
Coverage gaps are primarily distributed rooftop & small C&I solar (<1 MW) not tracked in utility-scale plant databases.
| Source | License | What |
|---|---|---|
| PyPSA powerplantmatching | CC-BY-4.0 | Plant-level data (GEM · GPD · ENTSO-E · BeyondCoal) |
| Energy-Charts (Fraunhofer ISE) | Open | Official installed capacity |
| H3 (Uber) | Apache 2.0 | Hexagonal grid system |
- Svelte + TypeScript — plugin UI
- Leaflet — map rendering (via Windy)
- H3 — hexagonal spatial indexing (pre-computed in Python, no runtime dependency)
- Rollup — bundling
npm install
npm run build # production build → dist/
npm start # dev server with watch → https://localhost:9999The hex aggregation script lives one level up in the parent workspace:
# Requires Python with h3 + pandas
pip install h3 pandas
./.venv/bin/python scripts/build_hex_data.pyThis reads powerplants.csv, filters solar ≥1 MW for the 6 target countries, assigns each plant to H3 cells at res-4 and res-5, and outputs src/data/solarHexData.ts.
src/
├── plugin.svelte # Main UI — country toggles, gauge, top plants
├── pluginConfig.ts # Plugin metadata (name, version, description)
├── hexOverlay.ts # H3 hex polygon rendering + plasma colormap
├── constants.ts # Geographic bounds, zoom thresholds
└── data/
├── solarHexData.ts # Pre-computed H3 hex cells (auto-generated)
├── countries.ts # Country metadata (flags, colors)
└── czechSolar.ts # CZ plant-level data (598 plants)
Data: CC-BY-4.0 (PyPSA powerplantmatching) Code: MIT