A typical 2.9kW solar system with 8.7kWh battery storage in Belgium costs approximately $2,726–$3,016 (equipment only, FOB China), generating an estimated 3,070 kWh/year and saving around $1,065/year at $0.409/kWh electricity rates. Estimated payback period: 2.6–2.8 years.
✓ Default usage (217 kWh) and rate ($0.409/kWh) are based on real data for Belgium. Source: ACER (Agency for the Cooperation of Energy Regulators), EU household average annual electricity consumption 2024, based on National Regulatory Authority data / 12; GlobalPetrolPrices (December 2025) · Verified: 2026-08-07
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