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O’NEILLS BAR Suffolk St , Dublin

Site Visit Date: 28th March 2011 Report Date: 8th April 2011 Auditor: P.J. Henry


Document Control Project Number: Customer Name: Address:

Version No

Draft / Approved


Name of Authorizer

1.1 1.1

Approved Approved

8th April 2011 8th April 2011

PJ Henry Cormac Mannion

Energy Services Project Manager: Report Author:

Cormac Mannion PJ Henry

Conditions relating to the issue of this report: 1. No alteration to this report is permitted 2. This report shall only be reproduced in full. Permission must be given by Energia before extracts can be taken and used. 3. The report remains the property of Energia until payment is received.



Audit Summary




Utilities Usage


Opportunities for cost savings


Electricity Supply Management


Energy Management Programme


Next Steps



AUDIT SUMMARY This report makes recommendations for improvements and savings in a number of areas; in particular it is recommended that priority be given to replacing existing light tubes/bulbs with more efficient CFL or LED tubes/bulbs and using motion sensors or day light control, reducing unnecessary day and night time usage, installation of overvoltage correction equipment, installation of a BMS (building management system) for improved heating control and insulation/draught proofing and other low cost initiatives such as timers on TV’s and coolers and improved housekeeping ie. turning off equipment when not in use. While the annual cost savings detailed below are estimates, they are conservative and are at the lower end of estimates. Therefore we would expect to see greater savings in practice.

SUMMARY OF SIGNIFICANT RECOMMENDATIONS (A) General Area Lighting: Replace exiting bulbs with more efficient CFL/LED tubes especially in running man signs, emergency exit stairways, kitchen, toilets and office areas. Also install motion detectors in unoccupied areas such as toilets etc and use day light sensors for bar areas etc. Annual Saving % of Annual electricity bill Implementation cost Payback period

= €20,000 - €35,000 = 20% - 35% = €40,000 - €70,000 = 2 yrs

(B) Heating and Cooling controls and conservation: Install a Building Management system and controls on heating, air conditioning and extraction fans. Lighting can also be connected and on/off switching controlled automatically.

Annual Saving % of Annual heating bill Implementation cost

= € 5,000 (of gas bill) = 20 % = € UNK


(C) Overvoltage regulation: Installation of overvoltage regulation equipment could save approx. 15% of total energy usage with short pay back times.

Annual Saving % of Annual electricity bill Implementation cost Payback

= €15,000 = 15% = €20,000 (est) = 1.25 yrs

(D) Day & Night time usage reduction: The bar is currently using on average 20% of its total weekday electricity usage at night time between the hours of 11.00pm – 8.00am.The industry standard would be between 10% – 15%.There is an opportunity for a 5% reduction at no extra cost which would save approx €5,000 per annum. Annual Saving % of Annual bill Implementation cost

= €5,000 = 5% = No Cost (except staff cost for carrying out audits)


Implementation Payback Cost Period





2 yrs

Heating & Cooling controls




1.5 yrs

Overvoltage correction





Reduce day & night time usage



No Cost







1.5 yrs




This report identifies opportunities for operational improvements and potential cost savings for energy usage. Before any recommendations are implemented, please ensure that all possible staff and client health & safety and hygiene issues, which may result from any technical or operational changes proposed in this report, are fully assessed and evaluated. The cost savings recommended in this report are broad estimates based on industry benchmarks and good practice. Any planned implementation of recommendations should be specifically evaluated to the bar’s financial objectives and requirements. The opportunities outlined, aim to give guidance of where the best value for money can be achieved by explaining details on a general basis. An energy survey of O’Neill’s Bar in Suffolk St, Dublin was carried out on 28 th March 2011 by an independent energy consultant (P.J. Henry) on behalf of Energia Energy Services. The audit involved a 1 day on-site visit, with a desktop audit having been initially carried out prior to the visit by analysing energy bills. Various personnel were interviewed throughout the day. Additional information required and not available on the day was collated and forwarded on.

1.1.Audit Scope The scope of the audit was to complete an initial energy usage audit, which reviewed and analysed the following elements of energy usage, in order to identify and prioritise potential opportunities for cost savings: -

Review of Energy bills


Identify significant energy & utility users


Develop an energy map


Identify inefficiencies in operation

We would expect to achieve between 10% - 20% savings as a result of this type of survey.


1.2 Energy Management Programme (EMP) O’Neill’s Bar wants to implement an energy management programme in order to improve their operational efficiency and reduce business costs. To this end the bar has appointed and energy manager who will identify and evaluate energy saving ideas. A complete and successful EMP is usually implemented in 3 phases as follows: Phase 1 : Initial energy survey to identify easy to implement no cost or low cost projects Phase 2 : Develop on-site employee awareness, set goals and develop a benchmarking system. Phase 3 : Carry out regular energy audits which identify additional cost savings

1.3 Client profile The bar dates back to the 1900’s and comprises of 4 stories which include – bar areas, celler, kitchen, dining areas, offices and an outside decking area for smoking. There is approx. 50 full and part-time employees, with the bar operating 7 days per week from 10,00am – 12.00am most days. The general area is lit by tungsten bulbs in order to compliment and enhance the atmosphere of the surrounding furnishings and décor. Because of this, replacement of existing light bulbs with more efficient lighting will not be possible in some areas and in others will have to be trialed firstly.


2.1 Electricity ( 2010) : €100,000 Current Supplier ; Energia Electricity is mainly used for lighting, air conditioning, refrigeration, pumps, extraction fans, glass washing machines, hand dryers, cookers, dishwasher and general electrical appliances and equipment. Estimated electricity usage based on industry benchmarks is as follows : User Lighting Refrigeration Air conditioning Catering equipment Electrical Equipment

: : : : :


Annual cost

50% 20% 10% 10% 10%

€50,000 €20,000 €10,000 €10,000 €10,000

2.2 Natural Gas (2010) : €25,000 per year Current Supplier : Flowgas Natural gas is used for hot water heating - (cleaning and wash hand basins) and space heating. Estimate of gas uses based on industry benchmarks : User


Hot water Space heating

(30%) (70%)

Annual Cost €7,500 €17,500

2.3 Water (2010) : €28,000 (no bills reviewed) Mains water is used for cleaning, wash-hand basins, catering, toilet flushes & glass washing. Estimated water use on industry benchmarks : User Toilet Flushes/Urinals Wash-hand basins Cleaning Catering

: : : :


Annual cost

50% 15% 15% 20%

€14,000 € 4,200 € 4,200 € 5,600


3.1 3.1.1


Lighting accounts for approx 50% of all electricity costs. Lighting improvements tend to give very quick payback times at low capital cost. There are 3 general recommendations:

1. Motion sensors should be installed in all unoccupied areas such as toilets, corridors, celler, storerooms, smoking area, some bar areas and the boilerhouse. All fiidges/coldrooms should have their door interlocked with the internal lights, as all lights were found to be on, during the audit.

2. Replace existing bulbs with more efficient CFL’s or LED’s throughout the bar, where remove ultra violet lights in toilets. 3. Install day light controls in areas where there is glazing so as to maximize use of natural daylight ie. Front bar, back chandelier stairs area.


Heating and Cooling (HVAC)

There is no heating and cooling controls for individual areas, heating is on all at once throughout the whole building. This is a very inefficient use of heating as areas not requiring heat/cooling or un- occupied are currently being heated/cooled when not required. A building management system can be installed which will controls the on/off operation of equipment in specific areas and different time requirements or temperature settings etc. There are grants available from SEAI Ireland for BMS units. The company I have recommended for the overvoltage control equipment also supply these units so you should talk to them about this item. Solar panels use the heat from the sun to heat water for domestic use, while sun is available. These panels can provide up 60% of the bar’s hot water requirements including wash hand sinks, kitchens and taps. Solar panel installations in similar bar’s have a payback of between 6 - 10 years. Grants of up to 25% are available from Sustainable Energy Ireland.



Overvoltage regulation

All electrical equipment is designed to operate most efficiently at approx. 220 V input voltage. However in Ireland input voltage can vary greatly in different parts of the country and could be as high as 235 volts. This cause’s inefficient electrical usage on equipment such as lights and chillers for example, as well as reducing the life time of equipment and increasing maintenance costs. Using an overvoltage regulation system, incoming voltage is set at 220volts,potentially saving 15% - 30% of overall electricity costs. Savings depend on what the current voltage is, but payback times are between 1 – 2 yrs on average. It is recommended that a supplier is initially contacted and an audit carried out in order to determine what potential saving may be available. These audits will be usually carried out free of charge by the supplier . Recommended supplier :They can also talk about Building Management Systems.

Kieran Lynam Operations Director Global Energy Management Ltd, Unit 1 A Joyce House, Barrack Square, Ballincollig, Co.Cork OFFICE: +353-21-4879398 FAX: +353-21-4879399 Mobile : +353-86-8349492 E-MAIL : WEB :


Day & Night Usage Reduction

Analysis of bills indicate a night usage (ie.11.00pm – 8.00 am) of 20 % of total electricity used by the hotel. This is high and should be reduced to 10% - 15%. The first step is to carry out an audit at night and weekends to see what electrical equipment is being left on. Then decisions can be made as to what is non-critical and can be turned off. This item is low cost and will give immediate results.


3.1.5Water conservation Water usage reduction and recycling could greatly reduce the bar’s water bill. There are a number of easy to implement measures which can be taken to reduce water costs. These are outlined below :

1. Install sub-meters for water to specific areas and monitor the water usage on an ongoing basis. 2. Do a water balance study to establish, water-in and water-out quantities from all users. 3. Do leak tests to see if there is any water wastage.

4. A rain water harvesting system channels the rain falling onto the roof of a building though guttering, filters it to remove leaves and debris, sterilizes it and then stores it in a tank. The water can be used for flushing toilets, general cleaning and watering gardens. This could cut the bar’s mains water needs by 50% and the system needs very little maintenance. The typical cost of such a system would be in the region of €14,000 - €20,000, depending on the configuration, giving a payback of 1 years.

5. Install tap aerators throughout the bar’s sinks. With large potential savings, any or all the recommendations listed above would be cost effective.



Office Equipment • • •


Always switch off office equipment when not in use. Discourage the use of electrical equipment in the office such as heaters, fans etc.

Main kitchen •

Install motion detector in vegetable and other kitchen store rooms and areas.

Install a motion detector for lights in the general area.

Ensure cold room doors are closed.

Interlock coldroom/fridge doors with internal lights.

Consider using strip curtains inside coolrooms/fridges to reduce air losses.


Staff changing / locker rooms/storerooms/ Toilets / Stairwells •


Buy energy saving office equipment eg. photocopiers, PC’s and laser printers that bear the energy label.

Install a motion detector to control lights.

General Dining area •

Replace 35w recessed light with 3 w super bright LED’s. Payback would be less than 1 year.

Install daylight control in back stairs in bar area to make best use of natural day light


Toilets General •

Motion detectors fitted to control lighting.

Interlock lights with extraction fans.



Smoking Area

The current heating arrangement for the smoking area is very inefficient as generally heating by air convection in open areas is not recommended. The preferred method of heating outdoor areas is by radiant heaters as shown below. These heaters use electricity to heat the area covered, as there is no loss of air, these units are 100% efficient. Couple this with on/off timed controls or motion detectors which turn them on only when required and efficiency is further increased. However if the current system must be used, controls should be put in place for on/off operation and also a timer should be installed to ensure that fans are not left on 24/7 as it is the current arrangement. Also consideration should be given to installing plastic strip curtains at the entrance to the smoking deck to prevent heat loss from the pub 2 nd floor area.

Note : Radiant Heaters produce beams of medium wave infrared energy which heat people and objects directly without warming the surrounding air. Making them ideal for difficult to heat or drafty buildings, where conventional warm air heating using fan heaters would be uneconomical.

(Visit for more info radiant heaters)


Cellar •

Install motion detectors to control lighting. Currently lights are left on all day.


Lighting should be controlled in sections as opposed to a blanket switching arrangement.


All fluorescent light tubes should be changed to LED type tubes which would give a 70% reduction in usage.


4.0 Electricity Supply Management 4.1


Current tariff is the appropriate tariff. .


Supply Capacity

Service Capacity charge at 150KVA is appropriate. However if all or some of the recommendations in this report are implement, capacity could be reduced which would result in further savings.


5.0 Energy Management Programme 5.1

Monitoring & Targeting

By installing a number of wireless electricity meters, reductions can be measured and this can help meet targets and encourage further energy conservation. These units can be purchased on the internet for small cost (i.e. Trade name: Wattson meter picture below, cost approx €150 each, Even though the devices only measure single phase,3-phase facilities’ can measure one phase and multiply by 3 to get an approx usage. Annual energy reduction targets should be set which are easily measurable and success rewarded.


Energy Management Team

A designated energy team should be put in place, which would be responsible for implementing a number of energy reduction projects. These wins should be communicated and successes rewarded. A programme of regular audits should be implemented. Refer to MAP programme.


Energy Awareness Programme

Implement an Employee awareness programme such as – “We are not wasters” type of campaign.




Implement and monitor energy saving recommendations from this energy survey.

Carry out regular energy audits in-house (weekly) by energy team members

Communicate this energy report to all employees

Provide awareness training for energy team members and employees

Carry out a 2 day energy awareness / promotional exhibition


Grants are available to companies under the Sustainable Energy Ireland’s REHEAT scheme (



energy audit