Osram lends St. Peter's Square in Rome a new sense of radiance. Following refur-bishment, modern and energy-efficient outdoor LED luminaires provide a unique lighting experience and also save energy of approximately 70 percent. The project concept by Direzione dei Servizi Tecnici del Governatorato dello Stato della Città del Vaticano was realised with support from Osram, the reference partner for global lighting expertise. Cooperation with Servizi Tecnici del Governatorato was also fundamental for the success of the important Sistine Chapel project, carried out in 2014. The new lighting system for the Sistine Chapel featured higher lumen-output and artwork-conserving LED lighting to protect and enhance Michelan-gelo's renowned frescoes. It also served as a benchmark with regard to artistic, historical and preservative aspects.
"We have gained recognition worldwide since October 2014 for our state-of-the-art LED lighting of the Sistine Chapel, and we're exceedingly pleased once again to have demonstrated in Rome our strengths as a provider of complex lighting solutions with the illumination of St. Peter's Square," said Olaf Berlien, CEO of OSRAM Licht AG. As with the Sistine Chapel project, the lighting solution for St Peter's Square was planned and put into operation in close cooperation between Osram and the Direzione dei Servizi Tecnici del Governatorato SCV. "In addition to perfect lighting results the task also in-cluded visual aspects such as the discreet integration of luminaires into the architectural setting and incorporating a simple, unobtrusive electrical installation. Saving energy and ecological sustainability was also important," stated Eladia Pulido, CEO of the Osram Lighting Solutions (LS) business unit.
The Vatican specified an illuminance level of up to 120 lux at night to provide safety for visitors and to even enable reading on the square during events and celebrations. 132 LED floodlights were installed, providing sufficient brightness and homogeneous il-lumination for the square. The new lighting lends the existing architecture and materials a visual upgrade – the light underlines the impressive columnar architecture and empha-sises the innate colour of the marble. Ecological sustainability is simultaneously ad-dressed, and for this reason the lighting concept focused on cutting power consumption and avoiding unwanted light immission. "Thanks to modern LED technology in combina-tion with a DALI light management system we achieve energy savings of around 70%," added Carlo Bogani, Executive Project Director at Osram Italy.
The 132 LED luminaires installed are a customer-specific version of the Floodlight 20 LED with through-wiring and special plug connections that enable simple installation and easy interwiring of the luminaires. The luminaires are equipped with a DALI Professional control system and feature a 4000K light colour (neutral white). St Peter's Square ('Piazza San Pietro' in Italian), located directly in front of St Peter's Basil-ica in Rome, consists of a trapezoid section and the actual elliptical forecourt with a total area of 48,000 m2, and up to 400,000 people gather on the extensive square for celebra-tions and special occasions, for example the election of a new Pope or at Easter time. Ex-tensive renovation work of St Peter's Square began in 2011, and at the beginning of the current year Osram together with Direzione dei Servizi Tecnici del Governatorato SCV cre-ated a new lighting concept based on modern LED technology that was installed and inau-gurated in the evening on October 20, 2016.