My building will be constructed from sustainable materials.
I have run an energy analysis on my building.
This is the energy analysis after I had changed the material of my roof to glass.
Although I have changed the roof's material from grass to glass the price of the building annually remains the same. This may be due to although glass doesn't retain as much heat, it allows more natural light to fill the building so although the cost of the heating bill may increase the cost of the electricity bill may reduce and balance the price.