Solar dominates the decentralised generation fleet
Luxembourg's solar fleet has just passed 800 megawatts: +36% in fifteen months. This dashboard answers the question raised by the Open Data portal — what is the share of solar power by municipality? — using the decentralised generation data published by Leneda.
Data as of 27 July 2026Source Leneda · data.public.luLicence CC0100 municipalities · 6 technologies
Installed solar PV
—
capacity connected to the grid
PV growth
—
since Q1 2025
PV installations
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connected to the grid · +45% in 15 months
Share of decentralised fleet
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of — MW across all technologies
National trajectory: PV pulls ahead
MW installed · Q1 2025 → today
Cumulative installed capacity by technology across the six published readings. Solar PV accounts for most of the — MW added to the fleet; wind is rising, cogeneration is receding, hydropower and biomass are stable.
Technology mix
reading of 27 July 2026
Three signals in the data
24 municipalities
draw — to the nearest rounding — all of their decentralised capacity from solar PV. The median PV share per municipality reaches 93.4%.
10.6 MW
The country's largest PV plant, in Rosport-Mompach — the municipality that also posts the strongest growth in volume: +11,635 kW in 15 months.
4 × ≈5 MW
Four plants top out just below 5 MW (Junglinster, Differdange, Käerjeng, Sanem) — likely the mark of a tender threshold.
Top 15 — PV capacity
kW installed
Top 10 — PV growth
kW added since Q1 2025
The residential paradox
36,787 PV installations counted one by one
96% of installations are under 30 kW — mostly residential rooftops — yet they account for only 54% of capacity. At the other end, 128 plants above 0.5 MW alone concentrate 181 MW.