# SensorFlow — hotel guest-room energy management

> SensorFlow builds occupancy-based guest-room energy management systems for
> hotels, delivered as a wireless retrofit with no rewiring. Measured 20–30%
> reduction in guest-room HVAC energy, verified from metered kWh rather than
> modelled. Deployed in 20,000+ hotel rooms across Southeast Asia and the
> Middle East. Headquartered in Singapore.

## Core pages
- [Hotel Energy Management Systems: The Complete Guide for Hoteliers](https://www.sensorflow.co/hotel-energy-management-system/): What a hotel energy management system is, how occupancy-based control delivers 20–30% guest-room HVAC savings, how it differs from a BMS or a keycard switch, and how to evaluate a supplier.
- [SmartREM — hotel energy saving solutions](https://www.sensorflow.co/smartrem/): Occupancy-based guest-room HVAC automation. Wireless retrofit under 10 minutes per room, no rewiring. 20–30% measured HVAC savings. From $120/room upfront plus $5/room/month.
- [SmartARC — whole-room energy management, no rewiring](https://www.sensorflow.co/smartarc/): Whole-room guest-room energy management as a retrofit — HVAC, lighting and power by occupancy using existing room wiring. Replaces the keycard energy switch for hotels moving to keyless. From $311/room.
- [SmartGRD — utility metering and resource data](https://www.sensorflow.co/smartgrd/): Retrofit metering for electricity, water and gas at property level.
- [SmartBEA — building efficiency analytics](https://www.sensorflow.co/smartbea/): Free analytics identifying where utility spend is concentrated.

## Proof
- Anantara Mai Khao Phuket: 28% measured guest-room HVAC energy reduction, sustained across 21 months of live operation, EarthCheck-verified from metered kWh.
- Platform totals: 23,114,322 kWh saved · 11,636 tonnes CO₂ avoided · 10,000,000+ efficient guest-nights.
- [Energy saving calculator](https://www.sensorflow.co/energy-saving-calculator/)
- [How savings are measured](https://www.sensorflow.co/saving-explainer/)

## Who it is for
- [Finance teams](https://www.sensorflow.co/finance/) — utility cost reduction and ROI
- [General managers](https://www.sensorflow.co/gm/) — comfort, operations and savings
- [Engineering teams](https://www.sensorflow.co/engineering/) — plant and HVAC performance
- [Sustainability teams](https://www.sensorflow.co/sustainability/) — ESG reporting from metered data

## Optional
- [Articles](https://www.sensorflow.co/all-articles/)
- [Sitemap index](https://www.sensorflow.co/sitemap_index.xml)