City Hall Technical Summary
The total installed
capacity is 67kWp
from an active cell area of 417m2.
The PV system is expected to generate about 50,000 kWh per year, that is about 1.5% of City Hall's electricity needs, and save over 28,000kg of CO2 emissions
per year. The two distinctive elements of the project are:
The domed roof
comprises 617 high efficiency bespoke photovoltaic
modules (9 different sizes/shapes); 51 of the modules over the existing
skylights are translucent. Each of the 617 modules contain 36 mono-crystalline
E-Ton cells (22,212 in total), and is clamped to a lightweight aluminium support
structure which is fixed to the corrugated roof sheet under the insulation and
waterproof roof membrane. The installed capacity on the domed roof is
52.4kWp.
The eyelash shading
comprises 46 bespoke glass-glass laminated panels with a total of
5,872 mono-crystalline E-Ton cells. This replaces the former mesh shading system
and provides solar shading for the 9th floor - London’s Living Room. The
installed capacity of the eyelash is
14.6kWp.
The E-Ton cells
were encapsulated into modules by Romag.
