Published on: July 23, 2025

SOLAR POWER ON LAKES: PROMISE VS. ECOLOGICAL CONCERNS

SOLAR POWER ON LAKES: PROMISE VS. ECOLOGICAL CONCERNS

NEWS

  • Karnataka government plans to install floating solar panels on 40 lakes in Kolar, Chickballapur, and Bengaluru.
  • Aims to generate 2,000 MW of renewable energy.
  • Jointly implemented by Minor Irrigation and Groundwater Development Dept. and Renewable Energy Dept. Ltd.

HIGHLIGHTS

  • Stated Benefits:
    • Reduced lake maintenance costs.
    • Enhanced protection against encroachment.
    • Boost to inland fisheries.
  • Expert Concerns:
    • Ecological Impact:
      • May damage lake vegetation and natural aquatic life.
      • Could accelerate degradation in already stressed lakes due to urbanisation.
    • Reduced Sunlight Penetration:
      • May affect phytoplankton and zooplankton growth, harming the food chain.
    • Increased Weed Growth:
      • Accumulation of nutrients near solar structures could trigger unwanted plant growth.
  • Recommendations & Alternatives:
    • Conduct pilot studies before full-scale implementation.
    • Target nutrient-rich zones to prevent algal blooms.
    • Use Category E lakes or barren lands instead of ecologically sensitive waterbodies.
    • Involve fishing communities and ensure catchment areas remain unaffected.