NOVELTY - A sheet comprises sealing sheets (11) and (12), for sealing a solar cell element (13), arranged between a light receiving surface-side protective component (14) and back surface-side protective component (15). When the sealing sheets (11) and (12) are heated and pressurized at 150 degrees C under 100 kPa for 15 minutes, further heated and depressurized at 150 degrees C under 250 Pa for 3 minutes, the volume resistivity of sealing sheet (11) is more than the volume resistivity of second sealing sheet (12), measured at 100 degrees C and applied voltage of 500 V based on JIS K6911.    USE - Sheet is used for solar cell module (claimed). Uses include but are not limited to motor vehicle, installed at roof of house, outdoor, camp and indoor.    ADVANTAGE - The sheet has excellent transparency, flexibility and adhesiveness with suppressed generation of Potential Induced Degradation and bubble. The solar cell module comprising sheet has excellent productivity, electric power generation efficiency and durability, and favorable external appearance with suppressed crack. The power generation equipment using solar cell module has excellent electric power generation efficiency.    DETAILED DESCRIPTION - A sheet comprises sealing sheets (11) and (12), for sealing a solar cell element, arranged between a light receiving surface-side protective component and back surface-side protective component. When the sealing sheets (11) and (12) are heated and pressurized at 150 degrees C under 100 kPa for 15 minutes, further heated and depressurized at 150 degrees C under 250 Pa for 3 minutes, the volume resistivity of sealing sheet (11) is more than the volume resistivity of second sealing sheet (12), measured at 100 degrees C and applied voltage of 500 V based on JIS K6911. The sealing sheet (11) is arranged between light receiving surface-side protective component and solar cell element. The sealing sheet (12) contains at least one polar group chosen from carboxyl group, ester group, hydroxyl group, amino group and acetal group. An INDEPENDENT CLAIM is included for solar cell module (10).    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the solar cell module.    Solar cell module (10)    Sealing sheets (11,12)    Solar cell element (13)    Light-receiving surface side protection component (14)    Back surface side protection component (15)