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From 10 Turbines to 20% Salmon Survival Gain: Sustainable Renewable Energy Reviews Expose Hidden River Trade‑offs
Small hydropower is not automatically harmless; a recent field study showed a 20% drop in salmon hatch rates downstream of just ten low-flow turbines, proving that even modest installations can impair river life. This finding challenges the common belief that small turbines are a sustainable trade-off. sustainable renewable energy reviews