PROBLEM TO BE SOLVED: To provide a transparent protective sheet for a solar battery module, which includes a polyester-based resin as a base material resin, which achieves both of transparency and weather resistance at higher levels in comparison to those achieved in the past, and of which the extent of transparency is specifically, 90.0 percent or more in light transmittance of wavelengths in a range of 400 nm or longer and 1200 nm or shorter.SOLUTION: A transparent protective sheet 6 for a solar battery module comprises: a base material layer 60 including, as a base resin, a polyester-based resin having a refraction index or 1.50 or more and 1.60 or less; and a weather-resistant layer 63 laminated over one face of the base material layer 60 through a weather-resistant adhesive layer 66. In the transparent protective sheet 6, the weather-resistant layer 63 has a refraction index of 1.35 or more...

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