PV Monocrystalline (8m 2 /kWp) (7m 2 /kWp) Polycrystalline Hybrid (6m 2 /kWp ) Amorphous (15-20m 2 /kWp) Cloudy conditions V.large surface areas Small surface areas Good yield Large surface areas Good yield Small surface areas V.good yield
Monocrystalline (7m 2 /kWp) Small surface areas Good yield
Hybrid (6m 2 /kWp ) Small surface areas V.good yield
Amorphous (15-20m 2 /kWp) V.large surface areas
(8m 2 /kWp) Polycrystalline Large surface areas Good yield
Skylights and vents Comes with skylights and/or roof vents
Gutters Gutter brackets fixed to angle-section at 40cm centres. Angle-section fixed to underside of MSR.
MP sheets MP Sheet provides protection to the junction box and cabling at the rear of PV module from chemical environments (gases, vapours etc.) or physical protection from activities within the building
… and yield potential expressed as Performance Ratio
The effectiveness of the PV system (i.e. how well it is designed and installed) is the ratio between the AC kWh energy delivered compared to the DC kWh potential.
PV SYSTEM Modules Inverters Stringing PERFORMANCE RATIO THE measure of PV system effectiveness Available radiation at array: SHADING ORIENTATION INCLINATION YEAR to YEAR variation AC kWh SITE & WEATHER CONSTRAINED