Photovoltaic

Photovoltaic (PV) modules

Reliability & system availability

Using photovoltaic (PV) modules for electricity generation is now well established and is considered to be a very robust technology requiring negligible maintenance. The lack of moving parts means that PV systems typically show very high levels of reliability and system availability.

Office block with solar panels on roof

The economic profile of PV projects was transformed by the introduction of the feed-in-tariff (FIT) in April 2010. Lifecycle costs for PV have historically been considered high. However, technology advances and consolidation in the industry have meant that PV installation costs have continued to fall. This has helped to substantially reduce project risk and financing costs.



The reduction of CO2 emissions using PV modules is most cost effective where there are constant daytime electrical loads and the generation can easily be used on-site. Due to the high carbon emission factor of grid electricity, PV modules can achieve significant reductions in site carbon dioxide (CO2) emissions.

Redcotec approach

Installing solar panels

For most locations there are a number of specific factors that need to work together to squeeze the maximum carbon savings from each pound spent. Redcotec will consider all the relevant constraints and opportunities particular to your site to reach the ideal solution in terms of CO2 savings and financial performance.

We can prepare a system design that exactly matches your needs and carbon performance targets.

Through our contacts with installers and suppliers we can usually achieve significant savings on your behalf on equipment purchase and installation.

More information

Training courses

High opportunity sites

  • Office blocks
  • Retail stores
  • Fully air conditioned sites
  • Sites with many computers
  • Buildings with comfort cooled zones

Fuel emission factors

Fuel kg CO2/kWh
Electricity 0.54†
Gas 0.19
† It is particularly beneficial to offset electricity consumption since the emission factor for grid electricity is so high

Key considerations

  • CO2 saving target
  • Maximum installed capacity
  • Predicted output
  • Roof loadings
  • Rigid modules/membrane system
  • Roof pitch, area and orientation
  • High/low efficiency modules

Training courses

Member of the Association of Energy Engineers Member of the Chartered Institute of Building Services Engineers Member of the Institute of Chemical Engineers Member of the Association of Energy Engineers Member of the Energy Institute