Energy-saving solutions for hotels and resorts - without compromising the experience.

NGÀY ĐĂNG 21/04/2026

Tiên Võ

In the hospitality industry, there is a very clear paradox:

You must reduce operating costs, but you cannot compromise guest experience.

Guests may not notice how much you save on electricity. But they will immediately notice if:

• The room is not cool enough
• Hot water is unstable
• The environment feels uncomfortable

→ That is why many hotels choose to “burn money on electricity” to maintain guest experience.

But in reality, an Energy Management System (EMS) can help hotels reduce 15-30% of energy costs without guests noticing any difference.

How does EMS help hotels save energy?

Instead of reducing power based on fixed settings, EMS optimizes based on real operational data.

Optimizing air conditioning based on room occupancy (Occupancy-based control)

Most hotels today use key cards to control electricity in guest rooms. However, in reality:

• Guests can keep power on using another card
• Rooms remain empty while air conditioning is still running

→ Leading to significant energy waste that the system cannot control.

EMS solves this by:

• Identifying real occupancy status (true occupancy)
• Automatically adjusting air conditioning based on guest behavior
• Maintaining comfort while reducing energy consumption

→ See detailed case study: Why key cards are no longer effective in hotels?

Real-time HVAC load optimization

In practice, many HVAC systems still operate on fixed schedules, not reflecting actual demand. This leads to overcapacity operation and high energy consumption without proportional efficiency.

EMS addresses this by collecting and analyzing real-time operational data (cooling load, energy consumption, equipment performance...), thereby optimizing HVAC operation.

Instead of running at 100% capacity, the system will:

• Adjust chiller load based on demand
• Optimize pump & fan speed (VSD)
• Maintain operation at the highest efficiency point

→ Reduce 15-25% HVAC energy consumption while maintaining stable temperature conditions.

Reducing peak demand costs (Peak Shaving)

In many hotels, electricity costs are not only based on total consumption but are also heavily affected by peak demand.

Just a few moments of sudden load spikes (e.g., multiple systems starting simultaneously) can significantly increase electricity costs for the entire billing cycle.

EMS helps by:

• Monitoring load in real-time
• Identifying causes of peak demand
• Coordinating with BMS to adjust load intelligently (reduce HVAC load, shift operation timing, prioritize critical areas)

→ This allows significant cost reduction without affecting guest experience.

→ See detailed article: How EMS controls peak demand in practice

Detecting “hidden” energy waste

In hotels, the largest energy waste does not come from obvious faults, but from systems operating “correctly” but not according to actual demand.

Air conditioning runs in empty rooms. Technical systems maintain stable loads unnecessarily. Energy is “leaking” in ways that are invisible to the naked eye.

EMS does more than measure consumption — it identifies actual operational states and detects invisible inefficiencies that increase daily costs.

→ The issue is not the equipment, but that the system does not know when to reduce.

Optimizing public areas & back-of-house

Public areas and back-of-house (BOH) are often considered “fixed zones,” so operations are also fixed:

• Lights on by schedule
• HVAC running continuously
• Technical systems always on 24/7

But in reality, demand fluctuates constantly based on guest flow and time.

EMS changes this approach by turning overlooked areas into major energy-saving opportunities:

• Lighting based on actual occupancy
• HVAC based on crowd density
• Supporting systems operating only when needed

And often, the biggest savings come from the areas no one expected to optimize.

How to save energy without affecting guest experience?

Hotels always face a difficult challenge: reducing costs without impacting guest comfort.

Even small changes can affect experience:

• Slight delay in room cooling
• Slight dimming in corridors
• Air conditioning not performing as expected

Real operational bottlenecks:

• Empty rooms maintaining full cooling
• Corridors fully lit despite low traffic
• BOH systems running continuously despite low night demand

So how can hotels save energy without affecting guest experience?

EMS solution:

• Room HVAC: From key card → integrated with real occupancy (sensor + PMS)
• Public lighting → based on actual presence
• Technical systems → demand-based operation instead of fixed schedules

KPS - Integrated EMS solution provider for hotels

In energy optimization, deploying systems separately is no longer enough to achieve sustainable efficiency.

What businesses truly need is an integrated solution where:

• Data is fully collected
• Operations are accurately analyzed
• Control is automatically executed

→ All on a unified platform

That is also KPS’s approach: Not just saving energy, but optimizing how energy is used across the entire building.

KPS core solution approach

Instead of separating systems, KPS builds a unified architecture:

• EMS: Collect - analyze - visualize energy data in real-time
• HVAC: Becomes the optimization target based on EMS data
• BMS: Central control platform executing operational strategies

→ Transforming from fragmented monitoring to data-driven optimization

Technology platform & ecosystem

KPS implements solutions based on open platforms from leading brands:

• ABB - automation & energy management
• Legrand - electrical infrastructure & smart building
• Johnson Controls - BMS & control platforms (EasyIO)

At the same time, KPS is a distributor and integrator of multiple systems:

• Security: Bosch, i-PRO, CNB
• Access control & parking: MAG, Kumahira
• Fire protection: GST, Janus Fire System, Simplex, Bosch
• Integration platform: Genetec

→ Enabling multi-system, multi-brand integration without vendor lock-in

→ Suitable for both new projects and system upgrades

Project experience

With over 16 years of development, KPS has delivered more than 800 projects nationwide:

• 70+ high-rise buildings
• 600+ residential projects
• 140+ factories & industrial zones
• Numerous hotels, resorts & infrastructure projects

KPS does not stop at implementation, but supports throughout the lifecycle:

• Consulting & site assessment
• Solution design
• Implementation & integration
• Operation, maintenance & long-term optimization

If you are looking to reduce energy costs but don’t know where to start:

Contact KPS for a tailored solution based on your building.