Building Energy Ratings


We have a number of Building Energy Rating (BER) experts in Green Energy Solutions which can help with you to identify your building's energy rating. Preliminary BER Certificates can be provided using a simplified Building Energy Model which gives a quick turnaround assessment at the pre-planning stage. For complex buildings that involve natural ventilation and complex building structures, we use an integrated environmental simulation which allows a much more advanced computer simulation of the building. In all cases, the Building Energy Rating will be accompanied by a detailed report. The report identifies building improvements and investment options for the client to improve the building's performance and reduce running costs.

As of the 1st January 2009, public bodies occupying buildings over 1,000m2 are required to exhibit a Display Energy Certificate (DEC), in a prominent place, clearly visible to the public. The DEC is intended to encourage public authorities to adopt environmentally responsible and efficient use of energy in buildings. The DEC is based on the measured energy use, where the actual energy consumed in the building is compared to a benchmark for similar buildings, and shown on the certificate A1 - G scale in terms of primary energy. There is also a CO2 indicator which shows the CO2 emissions associated with the building's energy consumption. 

Green Energy Solutions also offer LEED and BREEAM services. 

Building Energy Rating Rankings for Houses and Public Buildings

Building Energy Rating Rankings for Houses and Public Buildings


Teagasc, Johnstown Castle, Wexford

This building is 2341m2. Lighting accounts for 41% of the building's Co2 emissions. To reduce this, our engineers recommended the transfer of regular lights to LED lights and fixtures. Some spaces in the building were at high risk of overheating and therefore required immediate action. Reflective coating or shading devices should be installed to windows in order to reduce large amounts of heat entering building through windows when opened for ventilation purposes. 

This building achieved a very high BER rating and therefore could make few immediate changes to increase the energy efficiency of the building. 


Q Park, Four Courts, Dublin

The Q Park in Four Courts area of Dublin is 354.81m2. 43% of the building's energy consumption is used on lighting, 33% on equipment and 23% on heating, with the remainder split between cooling, water and auxiliary. Parts of the building were at risk of overheating. To combat this, Green Energy Solutions recommended installing reflective coating or shading devices to windows.

Recommended to combat the large lighting bill was the installation of a number of renewable technologies. These included solar water heating, pv and air & ground source heat pumps.


Mayfair, Kilkenny

The old Smithwicks Diageo building based in the heart of Kilkenny City is 1181.69m2. 39% of the building's energy was used on heating, 23% on hot water, 13% on auxiliary, 11% on lighting, 9% on equipment and the remaining 4% on cooling.

Our engineers recommended adding time controls to the heating system. This would automate turning on/off of heating. For cooling, duct work should be checked as risk of broken seals is high in a building of it's age. It was recommended that lighting and fittings be replaced with newer LED model.


Axis Business Park, Tullamore

Green Energy Solutions were hired to carry out BERs on a number of the retail/office units in the building. Due to the fact that the facilities are let out separate and occupied by a number of different businesses, all required individual BERs. James, one of our technical engineers carried out Building Energy Ratings on seven individual units. Although depending on their positioning, some had better energy ratings than others, all ranged between C1 and C3 rating. Green Energy Solutions made basic recommendations to all units such as a timed controlled heating system, considering replacing T8 lamps, installed in all units with T5, and introduce IHF florescent lighting tubes in replacement of the lighting already installed. 


Tullamore Court Hotel

Tullamore Court Hotel received a BER of C2 which places it in the middle of the road as regards energy efficiency. The building is heated primarily through gas and use large amounts of air-conditioning is areas prone to over heating. Green Energy Solutions made recommendations to Tullamore Court Hotel based on the findings and also gave a detailed presentation based on the changes needed to achieve an overall better BER, the expected results as well as the expected financial investment with finance opportunities. 


EPA H.Q, Wexford

Through the installation of a biomass boiler, automated lighting system, automated facades, heat recovery systems, rain water harvesting and photovoltaics, the client has a highly energy efficient building achieving a Building Energy Rating of A3.Through early design integration the construction costs were not significantly higher than a non green building.