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Luxembourg's Ministry of the Economy and the Ministry of the Environment announced a new pre-financing mechanism, 'Klimabonus Wunnen,' for residential photovoltaic installations, effective January 4, 2026. This subsidy will directly reduce upfront costs for homeowners, offering up to €10,000 for 15 kWp systems and €2,250 for 9 kWh batteries, with a transitional phase allowing applicants to select between the new and previous support schemes until March 4, 2026.