To improve work efficiency in fitting a solar cell module to a connecting metal piece fixed to a roof tile, and to improve work environment of workers fixing the solar cell module to the roof tile.

When the solar cell module 60 is fixed to the roof tile 1 having a locking projection 10 through the intermediary of the connecting metal piece 20, an output cable 63 of the solar cell module 60 is made to be gripped by the connecting metal piece 20 preliminarily to improve work environment for the workers. For this purpose, a pinching section 52 pinching the output cable 63 of the solar cell module 60 is provided on a long side supporting wall part 50 rising from a long side part of a base plate section 30 of the connecting metal piece 20. After a structural element 61 of the solar cell module 60 is engaged with a structural element 41 of the connecting metal piece 20 on the tail side B of the roof tile 1, another structural element 62 of the solar cell module 60 is externally fitted to another structural element 42 of the connecting metal piece 20 on the head side A of the roof tile 1.

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