We supported our client, a European owner and operator of 32 aparthotels, to complete a carbon and energy evaluation.
This enabled the creation of a reduction roadmap, which when implemented would deliver a Carbon and Energy reduction of 23%.
Our client’s requirements
Our client wanted to understand fiscal and energy consumption profiles across their 32 sites, split by building stock type, technologies deployed, and the operating conditions within each building.
Additional support was required to identify “no cost” and “low cost” solutions, that could be deployed to ensure current and future sites meet their revised operating requirements. This would be achieved by providing a proposed baseline of integration, operations, and energy consumption – each being included within the performance specifications.
How did we support them?
We conducted a desktop study, reviewing the estate’s building stock age and installed services compared to energy ratings. Additional reviews were undertaken against energy consumption and spend per site for the past three years. This provided a view of best vs worst consumers per m2, newest vs oldest construction in the portfolio, and the mean performance across all sites.
Additional site surveys were completed, where we:
- Compared current operational descriptions to onsite reality
- Conducted workshops to assess manual interventions for managing energy consumption
- Reviewed renewable provisions based on carbon offset from the current deployed technologies
All data gathered during desktop review and site surveys were collated into visual dashboards, for trend analysis to be completed. The analysis completed enabled us to identify a number of carbon, energy, and fiscal reduction routes, to implement in the post analysis “proof of concept” stage, that were no/low-cost impact.
What results did this deliver?
Opportunities were identified to improve site operability, lower operational costs, and significantly reduce group engineering time. However, these would require capital investment.
With alignment to client needs, the study highlighted three areas as no/low cost, and were implemented and benchmarked within live visualisations for for weeks as a proof of concept. The predicted savings we’re exceeded by 2%, and when implemented would deliver a carbon and energy reduction of 23%.
The three areas of improvement are:
- Changing the Domestic Hot Water Set Point by 8oC would reduce gas usage by 8%
- Improving the Domestic Hot Water Set Air Source Heat Pump Control would reduce gas usage by 9%, once the DHWS Primary set point was reduced
- Changing the mode of operation of rentable rooms when “unoccupied” or “preoccupied” could reduce electrical energy by 15%
