The annual Christmas illumination events return to brighten the winter nights at the various facilities and urban development centers of Mori Building Co., Ltd. In addition to the annual illumination of Keyakizaka-dori, 66 Plaza, Mohri Garden and other popular spots in Roppongi Hills, "Skydeck", which opened in April of this year as Japan's highest open-air observation deck, will debut its inaugural illumination event. ARK Hills, Omotesando Hills and VenusFort also will be adding to the festive Christmas atmosphere of their respective communities with distinctive holiday season lighting.
Approximately 900,000 LED lights will be used to provide illumination, contributing to energy saving. Moreover, illumination of Roppongi Hills (Keyakizaka-dori, 66 Plaza, Mohri Garden, Museum Cone and retail facilities) will be powered by "Green Power" for eco-friendly lighting.

Roppongi Hills Illumination at Roppongi Keyakizaka-dori

"Green Power" and LEDs power illumination for an "Eco" Christmas
The power consumption per lumen (lm) for an LED is approximately 12.3% that of an incandescent light bulb and can approach about half that for a fluorescent light source. In addition, the life of an LED is about 18 times that of incandescent bulbs and triple that of fluorescent lights. For this year's Christmas illumination, approximately 530,000 LEDS will be used at Roppongi Hills: 114,000 at ARK Hills; 22,000 at Omotesando Hills, and 220,000 at VenusFort.

Also at Roppongi Hills (Keyakizaka-dori, 66 Plaza, Mohri Garden, Museum Cone and retail facilities) the 6,000 kWh of electricity required for the illumination will be "green" power generated by wind power and biomass.
Green Power : http://www.natural-e.co.jp/english/