An energy retrofit investment case should explain the property problem, the evidence behind the proposed intervention and the full operating effect of doing the work. A projected saving is not enough if the baseline, scope or disruption is unclear. Owners and operators can use a disciplined case to compare options within hotel operations, asset optimisation and the Feathers Hospitality approach. For the wider hotel context, see asset optimisation e hotel owners e Feathers Hospitality approach.
These practices work best when information, ownership and verification are part of the routine rather than dependent on one person’s memory. {“A abordagem da Feathers Hospitality” if loc==”pt” else “The Feathers Hospitality approach”} liga orientação e execução.
Key points
- Define the baseline boundary and data quality.
- Include project scope, lifecycle cost and disruption.
- Set out how post-project results will be measured.
What is the baseline and how reliable is it?
Bring together utility bills, meter data, operating hours, occupancy, weather and known equipment changes. State the period covered and any gaps. If the building has several uses or meters, explain how the figures were allocated. A modelled estimate should be labelled as an estimate rather than presented as measured consumption.
Use a consistent boundary before and after the project. If room inventory, kitchen service or heating schedules change, those differences can distort a simple comparison. The DGEG overview of building energy performance describes Portugal’s energy-certification context; it does not validate a specific project forecast.
Which intervention is being proposed?
Describe the affected system, design maturity, equipment, controls, commissioning and interfaces with other building services. Separate a defined scope from optional measures and provisional sums. Identify what information remains missing and who must provide it before the owner can approve a fixed commitment.
Compare a like-for-like repair, control adjustment, replacement and deeper retrofit where each is technically relevant. The revised Energy Performance of Buildings Directive provides European policy context, while Portuguese requirements and professional assessment must be confirmed for the property.
What savings are measured and what are assumed?
Show the calculation method, operating schedule, energy price assumptions, expected performance range and any maintenance effect. Separate energy reduction from bill reduction: tariffs and fixed charges can change independently of consumption. Identify whether savings are gross or net of project costs and additional service needs.
Use a sensitivity range for occupancy, weather, energy prices and equipment performance. Avoid a single payback number that hides uncertainty. If the intervention changes guest comfort or available rooms, describe how that will be measured alongside kilowatt-hours.
What will the work disrupt?
List rooms and services affected, shutdown windows, noise, access, contractor presence and the expected commissioning period. Include the cost of taking rooms or facilities out of service if applicable. A low-season date does not guarantee low impact; check bookings, local events and staffing before fixing the programme.
Set out alternatives if equipment delivery or testing is delayed. Agree who can authorise changes and how guest-facing teams will receive updates. The operating case should show how the hotel continues to provide the promised service while the work is under way.
How should investment options be compared?
Put options on a common basis: initial cost range, lifecycle maintenance, replacement timing, expected energy effect, operational risk and evidence confidence. Include design, enabling works, commissioning, disposal and contingency where relevant. Record assumptions that would make one option preferable to another.
A grant, tax treatment or regulatory deadline should only appear when confirmed for the location, applicant and date. Do not assume a general incentive applies to a particular hotel. Have qualified technical and financial advisers review consequential decisions.
How will delivery and results be verified?
Name the project owner, technical adviser, operator and approval points. Require commissioning records, updated asset data and a measurement plan before work starts. Agree the reporting period and what counts as a material variance from forecast.
Review actual use against a weather- and occupancy-aware baseline where the data supports that comparison. Record defects and corrective work. A well-structured case helps owners decide and learn; it cannot guarantee savings or replace a competent energy audit.
Frequently asked questions
Are projected savings guaranteed?
No. They depend on use, weather, tariffs, equipment performance and delivery. Show a range and explain the assumptions that have the greatest effect.
Will rooms need to close during the work?
That depends on scope, access and safety. The plan should identify affected areas, phases and alternatives, with operational and technical review.