Hospitality Energy Upgrade Programme
Delivering Measurable Energy, Cost, and Carbon Savings Across Four Hotels
Celtic Dynamics partnered with four leading hotels to deliver a coordinated programme of energy efficiency upgrades across their facilities.
Each hotel faced distinct operational challenges, from outdated heating systems to inefficient lighting and controls, but all shared the same goal: reduce energy use, lower emissions and enhance guest comfort through modern, sustainable technology.
Upgrades focused on heating, ventilation, lighting, and control systems, supported by detailed energy audits, technical design and funding guidance in line with SEAI sustainability principles.
Results & Impact
The hospitality programme achieved significant, measurable improvements across energy, cost and carbon metrics.
5.38 milion kWh
Combined Annual Energy Savings
€688,657
Combined Annual Cost Savings
1,314 tonnes
Total Annual CO₂ Reduction
6 years
Average Project Payback
These results demonstrate the measurable financial and environmental benefits of strategic, data-driven investment in energy efficiency across the hospitality sector.
Challenges
The hotels’ existing systems were energy-intensive and lacked sufficient controls for optimised performance.
Key challenges included:
- High operating costs from ageing mechanical and lighting systems.
- Inconsistent temperature control affecting guest comfort.
- Limited monitoring capability for energy performance.
- Increasing ESG and sustainability requirements from corporate stakeholders.
Solutions
Celtic Dynamics undertook comprehensive energy audits and developed tailored upgrade strategies for each property, aligning with the client’s sustainability and operational priorities.
All works were planned and delivered in active hotel environments, ensuring minimal disruption to operations and guest experience.
To explore the full results and analysis,
download the full case study report here
Individual Project Highlights
Hotel 1
Modern 4-Star Hotel
- Replaced outdated boiler plant with a multi-pipe heat pump and upgraded AHUs.
- Installed LED lighting and dishwasher heat recovery with a 2.7-year payback.
- 6.5-year project payback delivering €365,000 annual savings.
Hotel 2
Boutique Hotel
- Focused on HVAC optimisation, LED lighting, and control upgrades.
- Delivered a 6.1-year payback with €96,275 annual savings and improved comfort.
Hotel 3
Family-Run Hotel
- Implemented LED lighting, system zoning, and window and door upgrades.
- Secured €22,000 in SEAI grants and achieved a 4.8-year payback.
Hotel 4
Full-Service Hotel
- Integrated heat-pump technology, AHU improvements, and VSDs on chillers.
- Added kitchen and pool system optimisation and BMS enhancements.
- Achieved €181,851 annual savings with a 5.7-year payback.
Celtic Dynamics Support
Celtic Dynamics managed all aspects of delivery, from energy auditing to project execution, providing:
This partnership-driven approach ensures every project achieves tangible outcomes. Lower costs, reduced emissions and enhanced performance, helping clients meet both operational and sustainability goals.
Explore more about the Boston Scientific Case Study and its impact on energy savings.
