
New build
Discuss suitable envelope zones before grids, glass specifications, risers and inverter spaces are fixed. Align architecture and electrical design from the outset.
New Build & Refurbishment
Consider building-integrated generation while material choices, dimensions and technical interfaces can still be coordinated.

Project decisions

Discuss suitable envelope zones before grids, glass specifications, risers and inverter spaces are fixed. Align architecture and electrical design from the outset.

Compare replacement materials on the same performance basis. Check existing structure, access, weather protection and how work will be staged.

First assess whether intervention is justified. Roof PV or another site option may be more practical than replacing serviceable glazing.
Assessment scope
Record the reference building-material option, candidate BIPV zones, evidence needed, responsibilities and the next design decision before treating a concept as an approved solution.