2.275kW System

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Case Study 2 – 2.275kW System

Background

This installation is on a 1930’s detached house.  The system is on the south westerly facing roof of an extension to the rear of the house.

Solar PV System Specification

  • 13 x BP 4175T Photovoltaic Modules (dimension 5825mmx3200mm)
  • 1 x StecaGrid 2000+ Inverter
  • 1 x OFGEM approved total generation meter
  • Schuco mounting system

Predicted System Performance

  • Output = 1869kWh/year
  • Income and Savings = £1006/year*
  • Income & Savings after 25 years £29,766**
  • Cost to install £13,195 (September 2010)
  • Payback time 12 years**
  • Average Annual ROI 9%**

*Based on 12.5p/kWh current energy price

**Assumes 2% inflation and 3% annual increase in energy costs