Size of your roof, open space on your roof, orientation of your roof facing, shadowing of your roof

2.What type of roof do you have

Clay tiles, slate roof, flat roof

3.Does your roof need repairs

4.How much weight can your roof take

5.What size array do you want

6.Do you want battery storage

7.What size is your main fuse

8.Is there space in your consumer unit

9.Where can the invertor be mounted

10.Can scaffolding be installed at your property