Existing Buildings Offer Significant Retrofit Potential
A significant proportion of UAE building stock predates modern energy-efficiency requirements and will remain operational for years to come.
A 2026 systematic review of UAE building-retrofit research published between 2010 and 2025 identified substantial technical potential, but also significant differences between interventions.
Across the studies reviewed, reported average savings were approximately 7.6% for glazing upgrades, 26.9% for cooling systems and 18% for HVAC optimisation. The review also found that operational retrofits generally demonstrated shorter payback periods than envelope interventions.
When multiple measures are combined, deeper reductions may become possible.
But this creates an investment problem: measures with different CAPEX requirements, savings potential, lifecycles and economics need to be considered together.
Technical potential alone does not determine where capital should be deployed.
Different Measures Create Different Investment Economics
Controls and operational improvements can require relatively limited capital, while cooling infrastructure, major HVAC renewal and building-envelope interventions may involve substantially longer investment horizons.
The review reports payback periods of within five years for some control-based retrofits, compared with approximately 10–20 years for envelope retrofits.
Evaluating measures purely on individual payback can therefore favour short-term opportunities while overlooking interventions that may be important to longer-term asset performance or decarbonisation.
For owners, the relevant question is not simply:
Which measure pays back fastest?
It is:
Which combination and sequence of investments best meets the owner’s objectives?
Different combinations create different Investment Pathways — with different consequences for CAPEX, OPEX, lifecycle economics, energy performance, emissions and asset renewal.
Fragmented Evidence Needs One Investment View
For many owners, the technical information may already exist.
Energy Audits, engineering studies, ESG strategies, Net Zero roadmaps, CAPEX plans and contractor or ESCO proposals can all contribute valuable evidence.
The difficulty is that these inputs may have been developed by different specialists using different assumptions, baselines, time horizons and economic criteria.
Before major capital is committed, the evidence therefore needs to be challenged and reconciled on a consistent investment basis.
This is particularly important because the 2026 review also identifies limitations in the underlying evidence. Only 36% of the studies assessed were classified as high reliability, while 60% were considered moderate reliability and 4% preliminary evidence.
Projected energy savings eventually become assumptions in an investment case. Owners therefore need to understand not only the expected outcome, but also how robust that outcome remains when key assumptions change.
The Decision Is About the Investment Pathway
The UAE does not lack retrofit technologies or technical opportunities.
The ownership challenge is determining which opportunities justify capital, which should be combined, when investments should be made and how confidently expected performance can support the investment case.
That requires technical feasibility and investment economics to be considered together.
For major asset renewal and Net Zero transformation, the objective should therefore not be to maximise the number of retrofit measures.
It should be to identify the Investment Pathway that creates the strongest long-term owner value against the owner’s defined objectives.
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PRIMARY RESEARCH SOURCE
Accelerating energy transition in the UAE: A systematic review of building retrofitting trends, barriers, and future directions.
Sustainable Energy Technologies and Assessments, Volume 93 (2026), Article 105305. Available online 11 August 2026.
DOI: 10.1016/j.seta.2026.105305
