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Edificio Bronce
Case overview
Built in 1990, Madrid’s 22-floor Edificio Bronce – also known locally as Torre Bronce (Bronze Building) – was one of the first locations in the city designed exclusively for office use. After three decades of heavy use, its elevators were struggling to meet occupant needs. At peak times passengers waited up to six minutes, while high energy consumption raised machine-room temperatures and contributed to frequent breakdowns.
| Project name | Edificio Bronce |
| Location | Downtown Madrid, Spain |
| Modernization completed | Phase 1: 2014; Phase 2: 2018 |
| Floors | 22 |
| Building population | 1,000 per day |
| Architect | Abarrategui Design |
| Building owner, developer & contractor | Palma 29 S.L. |
Requirements of the modernization
- Future-proof the aging office building with smart, energy-efficient solutions
- Reduce elevator waiting times and improve equipment reliability
- Complete the modernization while keeping the building fully occupied
Future-proofing for the next generation
The transformation began in 2014 with the modernization of four elevators and the introduction of destination control and equipment monitoring solutions. These technologies improved traffic flow, reduced intermediate stops, and provided better visibility into elevator performance. Together, the initial solutions helped reduce rush-hour waiting times by more than 60%, creating a smoother experience for the building’s occupants.
“The main hall of the building doesn’t get crowded anymore. Maintaining a high quality of life for our occupants on the move is of the highest priority.”
Ricardo García
Maintenance Manager, Edificio Bronce
A phased transformation
Following the success of the initial modernization, further upgrades were implemented as part of a multi-phase transformation. Integrated access control solutions and people flow technologies were introduced to enhance security, efficiency, and occupant movement throughout the building.
As part of the modernization, the main entrance doors were replaced with an automatic revolving door. The upgrade improves energy efficiency by reducing heating and cooling losses, helps regulate the flow of people to avoid congestion, and enhances comfort by allowing continuous access without the need to push doors. It also contributes to a more modern and professional image for the building.
Today, the building benefits from connected predictive maintenance services that use equipment data to identify potential issues before they result in disruptions.
“After seeing the value of the KONE solutions, we decided to install KONE 24/7 Connected Services because of the reliability and the comfort of predictive maintenance.”
Ricardo García
Maintenance Manager, Edificio Bronce
Results of the collaboration
Faster and smoother journeys
Rush-hour waiting times were reduced by more than 60%, easing lobby congestion and improving the daily occupant experience.
Improved energy efficiency
Smart and energy-efficient solutions help reduce the property’s energy consumption by minimizing the loss of conditioned air and heat.
Minimal disruption
Carefully planned phases allowed the building to remain fully occupied throughout the modernization.
Increased equipment reliability
Modernized equipment and predictive maintenance help increase reliability and reduce breakdowns.
Technology highlights
- 4 KONE ReGenerate™ 800 elevators
- 4 KONE Turnstile 100
- KONE Access™
- KONE Polaris™ Hybrid elevator destination control system
- KONE E-Link™ equipment monitoring solution
- KONE 24/7 Connected Services predictive maintenance system
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