The Brundtland Building - Photovoltaic (PV) System

Technology Solar PV

General Specifications/Information

7.2kWh (39 panels)

Cost of Technology £22,680

Estimated Annual Savings tCO2

£434 + £2,259 (FiTs) - Calculated on 2011 prices. 3.2

Estimated Payback Period 8.4 years

Typical Performance Produces enough electricity to power two average sized homes

Classroom Installation ATG-Tasol Ltd installed on the roof of the College, 6 solar systems each with its control gear located in the college sustainability room. The inverter converts the direct current (DC) produced within the PV panels to alternating current (AC) which is suitable for use by appliances and for feeding back into the UK power distribution network. Each system has its own SMA SB1200 inverter and generation meter with associated system isolators. There are three 1.11 kWp systems and three 1.295kWp systems.

Tel: 0845 0944 676 Email: sales@atgsolar.co.uk

Web: www.atgsolar.co.uk

Roof Installation

Distribution Board Houses circuit breakers which

provide the primary isolation for the PV allowing all systems to be switched off at

this point.

AC Isolators The AC and DC isolators are switches which provide local isolation for each system. This is where the flow of electricity to the inverter and through the generation meter can be switched off so

that either can be changed or worked on without the risk of an electric shock.

Generation Metre Measures in kWh

(Kilowatt hours) the units of energy

produced. This is the same unit of measure that you will find on your electricity bill.

DC Isolator

The positive and negative power cables

connect each EGM 185W solar panel in series to allow the

power produced to flow back to the inverter. The solar panels are

mounted on Renusol mounting trays which

are weighted down with ballast. This system avoids the need to penetrate the roof

membrane.