Progressive energy reduction at Bewley’s
Bewley's have been working progressively to reduce energy consumption. This project focused on their tea and coffee manufacturing facility in Dublin.
710kkWh of annual energy savings
€22,800Annual cost savings
Energy management to achieve targets
Energy management software developed in-house was installed across the site with visible, real-time monitors. Transparent reporting should ensure that energy performance targets are achieved.
|Annual energy (kWh)||Annual costs (€)||Annual CO2 (kg)|
|Savings achieved||710,000 (5.4% saving)||22,800 (7.8% saving)||109,000 (6% saving)|
Bewley's Ltd. produced approximately 2,500 tonnes of coffee and 700 tonnes of tea in 2011. The site, where 151 staff are employed, also includes warehousing, an equipment workshop and administration offices.
For a number of years, Bewley’s has been working to progressively reduce energy consumption through both capital expenditure and behavioural measures. In January 2011, it became the first company in Ireland to have its carbon footprint calculation accredited to ISO 14064.
Lighting efficiency was addressed by replacing high-bay, metal halide fittings and twin five-foot fluorescents with low-wattage, high-frequency induction fittings. Unlike the old metal halide fittings, the new induction fittings lend themselves to sensor control.
Measures to reduce thermal energy use included addressing efficiency issues within the AHU by rebalancing the system and applying insulation to the AHU duct. In addition, the project addressed inadequate insulation on one of the roasters. Finally, gas in-line meters were installed in the plant room to monitor gas consumption of the hot water boilers and the central heating system.
“Our new lighting has contributed significantly to energy savings.” Eamonn Diver, Engineering Manager “Energy efficiency is integral to our environmental policy, as almost 50% of our carbon emissions are generated by energy consumption.”
Finance and funding
Financial support: €18,835 (35% grant from SEAI)
Project cost: €53,815
Payback time: 2.4 years (or 1.6 years with grant)
The project was initiated by Kathryn Costello, the Operations Director at Bewley’s, who leads the company’s Sustainability Team. Meanwhile, the project activities were managed by Eamonn Diver, the Engineering Manager, who leads the Bewley’s Green Team. They are a cross-functional unit responsible for environmental initiatives and carbon footprint reduction across the entire site.