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Most solar panels last 25–30+ years, but degradation rates vary. Top-tier panels (SunPower, REC, Panasonic) lose only 0.3–0.5% efficiency per year, while cheaper options may degrade 0.8% or more.
Most solar panels last 25–30+ years, but degradation rates vary. Top-tier panels (SunPower, REC, Panasonic) lose only 0.3–0.5% efficiency per year, while cheaper options may degrade 0.8% or more.
