How PV Works

Grid Connected PV

The electricity produced by solar PV modules is used directly in the building and if the system is connected to the national grid any excess energy can be sold to your utility company and fed back into the grid. In this way the grid acts as your energy store, eliminating the requirement for battery storage.

Grid Connected PV

When the system is not producing enough electricity to meet the electrical energy demand of the building, power is drawn from the grid.

Solar electricity is particularly advantageous in situations where the power is used for applications such as cooling and air conditioning, with peak loads during the day-time when the solar electricity production is at its highest level.

When the system is in place it begins to pay for itself right away by producing electricity. Electricity is generated where it is consumed; this means transmission and distribution losses are avoided.

Using the latest technology a 1kWh system will produce between 700kWh - 800kWh of electricity per year. Such a system would typically require 8m2 of roof area. The average annual electricity consumption of a household is 4,000kWh per year.

PV panels can replace standard roof materials, effectively reducing the investment needed in the solar electricity system. We supply photovoltaic roof tiles; these tiles are installed in a similar way to conventional roof tiles and are frequently integrated into roofs on new build projects.

Pitched roofs facing south are ideal, although flat roofs can be used by installing a frame to hold the photovoltaic panels at a suitable orientation and angle. We can also incorporate photovoltaic technologies into facades, canopies and sky lights.

There are many ways of installing a photovoltaic system on a building and we would be pleased to discuss your requirements in detail.