3.99kW On-Roof Domestic System

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Solar PV Installation – Retro Fit – On Roof, Sheffield, UK
Type of Property / Building Detached building
Technology Solution Solar PV
Type of System 3.99kW on roof solar PV system

The Requirement

The requirement was for a large solar PV array to be installed on the existing domestic property. It was important that the size of the system did not exceed 4kWp so as to maximise the feed in tariff yield, yet still meet the requirements of the building.

System Configuration

System configuration – Solar PV Installation – Retro Fit – On Roof, Sheffield, UK
Number of PV panels 21 Panels
Output of each PV Panel 190 Watts
Weight of each PV Panel 15kg
Area of Panels 27.3 Square Meters
Peak Output 3.99kW Peak
Type of roof kit On roof, portrait orientation
Type of System Grid connected

Performance Benefits / Savings

Performance Benefits / Savings – Solar PV Installation – Retro Fit – On Roof, Sheffield, UK
Energy generated per annum (estimated) 3,500 kW Hours
Annual Saving in CO2 Emissions 1,550 kg
Feed in Tariff income per annum £1,800
  • Provides 80% of annual electricity requirements
  • House has an electricity bill net gain
  • Reduced grid electricity consumption
  • Reduced carbon emissions
  • Increased property value