Case Study
Anantara Vacation Club Mai Khao Phuket
995K+
kWh Total Energy Saved
$94,486
Total Cost Savings (USD)
495
tonnes CO2 Avoided
28%
Avg. HVAC Energy Reduction
Anantara Vacation Club Mai Khao Phuket is a 151-key luxury resort featuring 93 two-bedroom pool villas set along the pristine shores of northern Phuket. Operating in a tropical climate with year-round air conditioning demand, the property partnered with SensorFlow to deploy SmartREM, a wireless room energy management system, across the entire resort. Since going live in September 2024, the system has delivered consistent HVAC energy savings averaging 28%, with cumulative savings approaching one million kilowatt-hours.
As a 151-key resort that includes 93 two-bedroom pool villas located in a very tropical climate, we faced high energy consumption due to constant AC usage. After implementing SensorFlow, we achieved a 28% savings (approximately 552,000 kWh or USD 54,000 annually) without impacting guest comfort. With a superior solution and excellent customer support, SensorFlow helped us support our overall sustainability goals without compromising on our high standards. We highly recommend SensorFlow for any company looking to reduce resource use while maintaining their service levels.
Jittraporn (Jang) Sukjaimit
Hotel Manager, Anantara Vacation Club Mai Khao Phuket. March 2026.
Tropical Climate, Year-Round Cooling Demand
Located on the northern coast of Phuket, Anantara Vacation Club Mai Khao Phuket operates in one of Southeast Asia's most consistently warm and humid climates. With average temperatures above 30°C for most of the year, air conditioning runs virtually around the clock, making HVAC the single largest driver of the resort's energy consumption.
The property's 151 keys include 93 spacious two-bedroom pool villas, each with multiple split-system VRV/VRF air conditioning units. The villa format, with larger floor areas and multiple cooling zones per key, compounds the energy challenge compared to a conventional hotel room. Guests expect seamless climate control at all times, leaving little room for manual energy interventions without risking guest satisfaction.
The resort's leadership sought a technology partner that could deliver meaningful energy reductions while preserving the premium guest experience that the Anantara brand is known for, with a clear and measurable return on investment.
SmartREM by SensorFlow
SensorFlow deployed its SmartREM (Smart Room Energy Management) system across all 151 keys under a fixed, predictable commercial model with a clear return on investment.
Each room and villa was fitted with SensorFlow's wireless IoT sensor suite: occupancy sensors, door and window sensors, and smart thermostat controllers that communicate with SensorFlow's cloud-based AI automation engine. The system continuously monitors room conditions and guest presence, automatically adjusting HVAC setpoints and operating modes to optimise energy use without manual intervention.
Because the property is not humidity-sensitive, SensorFlow configured all rooms to operate on SuperSave automation mode (full AC shut-off when rooms are unoccupied) from the outset, maximising energy savings potential. The resort team also developed in-house capability for self-maintenance of the sensor network.
Wireless IoT Sensors
Occupancy Detection
AI Automation Engine
Non-Invasive Install
VRV / VRF Compatible
SuperSave Mode
Anantara Vacation Club Mai Khao Phuket completed a successful integration in February 2024. A SensorFlow integration involves installing two units of each room type to calibrate system functionality and validate promised savings targets, all at SensorFlow's own cost. This process showcases confidence in the system while giving the client full visibility into expected results before committing to a property-wide rollout. Following this, a full, non-invasive, wireless installation across the property was completed in August 2024, with no disruption to resort operations or guest stays. The property then went live beginning 5 September 2024, marking the start of live energy monitoring and automated savings.
The SensorFlow dashboard provides the resort's engineering and management teams with real-time visibility into energy consumption, automation performance, and system health across every key. This transparency enabled the team to quickly identify and resolve issues independently.
Measurable Impact from Month One
Over 21 months of live operation (September 2024 to May 2026), Anantara Vacation Club Mai Khao Phuket has delivered sustained, measurable energy and cost savings. The figures below reflect actual metered data from the SensorFlow platform.
28 %
995K+ kWh
$53,992
$94,486
495 tonnes CO2
CO2 calculated using Thailand TGO 2023 grid emission factor (0.4976 kg CO2/kWh)
Monthly Energy Savings
kWh saved per month across all SmartREM-equipped rooms
Energy Reduction Rate
Percentage reduction in HVAC energy consumption
Monthly savings naturally fluctuate based on weather conditions, guest behaviour patterns, room occupancy, setpoint limitation, and the daily automation window configured for the property. When guests spend more time away from their rooms and automation runs across a wider daily window, SmartREM has greater opportunity to activate SuperSave mode, which initiates full AC shut-off in unoccupied rooms. Savings are also supported by setpoint limitation, which helps prevent excessive cooling when guests select very low temperatures by keeping the AC within the property's approved temperature range. The 28% average reflects consistent, sustained performance across varying seasonal and operational conditions.
Per-Room Efficiency
314
kWh saved per room / month
$30
Cost saved per room / month
Each of the 151 keys saves an average of 314 kWh per month, translating to approximately $30 in monthly cost savings per room. For the two-bedroom pool villas, which comprise the majority of the property, the per-key savings are particularly notable given the larger cooling footprint and multiple HVAC zones in each villa.
Beyond direct energy savings, reduced AC runtime extends the operational lifespan of the property's VRV/VRF equipment, lowering long-term maintenance and capital replacement costs.
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SensorFlow is a leading provider of guest room energy management systems for the hospitality industry. Its flagship SmartREM system uses wireless IoT sensors and AI-driven automation to reduce HVAC energy consumption by 20-30% without impacting guest comfort. Deployed across hundreds of hotels in Asia Pacific and the Maldives, SensorFlow helps properties meet sustainability targets while delivering measurable cost savings.
sensorflow.co