The room doesn't remember that she prefers the air cooler at night
Spain's hotel industry finds itself in a paradox familiar to many mature sectors: revenues rise while profits quietly erode, the gap filled by aging infrastructure that consumes energy without intelligence and fragments operations without coordination. Across nearly 5,000 properties still running on 1990s systems, the buildings themselves have become the hidden cost center. The answer emerging is not demolition but transformation — making existing systems think, communicate, and anticipate, turning passive infrastructure into a source of competitive resilience.
- Energy and labor costs are outpacing revenue growth in Spanish hotels, quietly hollowing out profits even as occupancy and room rates climb.
- HVAC systems — consuming up to 60% of a hotel's electricity — run blind to occupancy and demand, cooling empty rooms and heating unoccupied corridors around the clock.
- Fragmented technology stacks mean that when equipment fails, staff learn about it from a complaining guest rather than from the system itself, keeping operations permanently reactive.
- Smart sensors, predictive algorithms, and integrated building platforms are being deployed to cut energy use by up to 50%, slash carbon emissions, and return investments in under a year.
- Hotels that modernize in phases — without shutting down — are converting their buildings from cost burdens into measurable competitive advantages, while those that wait face steadily compressing margins.
Spain's hotel industry is caught in a quiet contradiction: room revenues are climbing, yet end-of-month profits keep shrinking. The reason is structural. Nearly 5,000 of the country's 16,700 hotels still operate on infrastructure designed in the 1990s — systems that don't communicate, can't learn, and simply run, consuming energy and money without awareness.
The largest single drain is climate control. HVAC systems account for 40 to 60 percent of a hotel's total electricity use, yet most operate without knowing whether a room is occupied or what conditions are actually needed. Guests arrive to rooms that have been cooling for hours; guests depart while air conditioning runs on. Adding occupancy sensors, predictive algorithms, and proportional controls can cut consumption by 30 percent and carbon emissions by 40 percent — not by replacing equipment wholesale, but by making what already exists intelligent.
Fragmentation compounds the problem. A mid-sized hotel might run six disconnected systems from six vendors, none capable of communicating with the others. Failures surface only when guests complain. Unifying these systems under a single open architecture changes the dynamic entirely: predictive maintenance catches failures before they occur, response times improve dramatically, and independent research suggests integrated platforms can return their investment in roughly eight months.
Guest experience suffers too. Without automation, every stay begins from scratch — temperatures, lighting, and blinds adjusted manually, preferences forgotten at checkout. Integrated room management systems can pre-condition spaces before arrival, recall individual preferences, and power everything down automatically upon departure, yielding energy savings of up to 50 percent per room.
Security and carbon accountability round out the gap. Many hotels still monitor fire and safety systems without real-time alerts or analytical capacity. Meanwhile, ESG reporting — increasingly demanded by investors, tour operators, and guests — remains trapped in spreadsheets. Hotels that have adopted high-efficiency heat pumps report energy cost reductions of up to 53 percent and carbon cuts of up to 60 percent compared to gas boilers.
The encouraging reality is that modernization need not mean shutdown. Upgrades can proceed system by system, in phases, without disrupting daily operations. Some properties are adopting Energy-as-a-Service models, paying for efficiency gains rather than bearing large upfront costs. The building itself — long treated as an overhead burden — is becoming a source of advantage. Those who move first will carry lower costs, stronger guest loyalty, and cleaner balance sheets into an increasingly competitive market.
Spain's hotel industry is caught in a peculiar bind. Room revenues are climbing, yet the money left over at the end of the month keeps shrinking. The culprit is straightforward: energy bills and payroll are rising faster than the top line can absorb. Walk through the corridors of nearly 5,000 Spanish hotels—roughly 30 percent of the country's 16,700 properties—and you'll find yourself in buildings designed for the 1990s. Their heating, cooling, and lighting systems don't talk to each other. They can't learn. They can't anticipate. They simply run, consuming power and money in the dark.
The largest single drain is climate control. HVAC systems in a typical hotel consume between 40 and 60 percent of all electricity used on the property. Yet most of these systems operate without knowing whether a room is occupied, without adjusting to actual demand, without any sense of what's coming next. A guest arrives to a room that's been cooling for hours. Another guest leaves, and the air conditioning keeps running. The waste is invisible until you see the bill. But it doesn't have to be this way. Adding sensors to detect occupancy, layering in predictive algorithms, and installing proportional controls can cut energy consumption by as much as 30 percent while reducing carbon emissions by 40 percent. The investment isn't necessarily massive—it's about making existing equipment intelligent rather than replacing everything at once.
The second problem is fragmentation. A mid-sized hotel might operate six different systems from six different vendors, none of them capable of speaking to the others. When something breaks, the hotel staff usually finds out when a guest complains. A pipe leaks. A compressor fails. A light flickers. The response is reactive, always behind the problem. Unifying these systems under a single architecture with open protocols transforms the dynamic entirely. Predictive maintenance can spot failures before they happen. Response times accelerate by 85 percent. According to independent research by Forrester Consulting, hotels investing in integrated platforms like Johnson Controls' OpenBlue system see their investment returned in roughly eight months, with cumulative benefits reaching 11 million dollars over three years.
Guest experience suffers from this fragmentation too. Without automation, each stay starts from scratch. A returning guest manually adjusts the temperature, the lighting, the blinds—again. The room doesn't remember that she prefers the air cooler at night, or that he likes the curtains drawn. Modern room management systems, integrated with building automation platforms, can pre-condition a space before arrival, recall preferences from previous visits, and shut everything down automatically at checkout. The result is energy savings of up to 50 percent in individual rooms and up to 60 percent in ventilation and lighting across the property.
Security systems in many Spanish hotels remain equally disconnected from the present. Fire alarms operate without remote monitoring. Security cameras record without analyzing what they see. Evacuation systems lack coordination. In a real emergency, the hotel is flying blind. Seventy percent of hotel operators surveyed by Forrester said that a real-time alert system optimized for their specific risks would have significantly reduced or prevented damage from the most serious incidents they've faced.
The final piece is carbon accounting. Environmental footprint has stopped being an internal metric and become a selling point. Tour operators, investors, and guests increasingly ask about it. Yet most hotels still track energy consumption in spreadsheets, with no capacity for ESG reporting or regulatory compliance. Hotels that have moved to high-efficiency heat pumps have cut energy costs by up to 53 percent and carbon emissions by up to 60 percent compared to gas boilers. The shift isn't just environmental—it's financial.
The path forward doesn't require hotels to shut down for a complete overhaul. Modernization can happen in phases, system by system, without interrupting daily operations. Some hotels are adopting an Energy-as-a-Service model, where they pay for efficiency gains rather than making large upfront capital investments. A remote operations center monitors performance continuously, optimizing in real time. What was once a cost center—the building itself—becomes a source of competitive advantage. The hotels that move first will have lower operating costs, happier guests, and cleaner balance sheets. The ones that wait will watch their margins compress further.
Notable Quotes
Digitalization of hotel operations, modernization of climate control, and active energy demand management are consolidating as levers with significant economic and environmental benefits.— David García López, Commercial Director of Controls for Iberia at Johnson Controls
Energy efficiency and decarbonization are no longer a regulatory obligation but a real competitive advantage in the hotel sector.— David García López, Johnson Controls
The Hearth Conversation Another angle on the story
Why are Spanish hotels in this particular squeeze right now? Revenues are up, so what changed?
The costs changed faster than the revenues did. Energy and labor are rising at a steeper curve. And most of the physical plant—the buildings themselves—was built in an era when nobody expected to optimize them. They're just running.
So it's not that the hotels are poorly managed. It's that the buildings are old.
Exactly. A hotel from 1995 has HVAC systems that don't know if anyone's in the room. They run on a schedule, not on reality. That's not a management failure. That's a design problem.
And the fix is to add sensors and software on top of what's already there?
Mostly, yes. You don't rip out the compressor. You give it eyes and a brain. You connect it to the other systems so they can talk. Suddenly you can see what's actually happening and predict what's about to happen.
What's the money like? How long before a hotel gets its investment back?
Eight months on average, according to the research. And then the savings keep coming for years. Some hotels are seeing 11 million dollars in benefits over three years.
That's a powerful number. Why aren't all hotels doing this already?
Inertia, partly. Capital constraints. And maybe they don't realize how much money is leaking out through the walls.