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—Toward Eco-Friendly Stations—
Solar Power System on the Tokaido Line Platform at Tokyo Station to Begin Operation

East Japan Railway Company

February 25, 2011

Pursuant to the "JR East 2020 Vision –idomu-", the JR East Group is engaging in measures to prevent global warming. As part of these measures, construction that began in January 2010 to install a solar power system on the Tokaido Line platform (tracks 9 and 10) at Tokyo Station was recently completed, and the decision was made to begin utilization of the system on February 25, 2011.

Solar power systems had already been introduced to JR East stations on the Shinkansen Line platform at Tokyo Station and at Takasaki Station. The recently introduced system, however, is our largest on the scale of power generation with a projected capacity of 453 kW, annual generated output of approximately 340 MWh, and a CO2 reduction effect of approximately 101 t. This corresponds to approximately 0.3% of the total electric power used by Tokyo Station as a whole.

The generated electricity will be used to power Tokyo Station lighting, air conditioning, and so on. JR East will continue to pursue the adoption of energy-saving measures and will implement further CO2 reductions.

Tokyo Station Tokaido Line Platform (No. 9 & 10) Solar Power System (Full view)
Tokyo Station Tokaido Line Platform (No. 9 & 10) Solar Power System (Full view)

1. Overview of Solar Power System

(1)  Installed location and power output
Installed location Year and month installed Panel area Power output Type of installation
Tokaido Line platform (tracks 9 and 10)
February 2011
Approx.
3,846 m2
453 kW
Integrated with roofing (light transmitting)
[Reference: Already installed Solar Power Systems]
Installed location Year and month installed Panel area Power output Type of installation
Tokyo Station Shinkansen Line platform (tracks 22 and 23)
March 1993
Approx.
433 m2
30 kW
Rooftop emplacement type
Takasaki Station Shinkansen Line northbound platform
March 2001
Approx.
750 m2
100 kW
Integrated with roofing
Takasaki Station Shinkansen Line Tokyo-bound platform
February 2004
Approx.
800 m2
100 kW
Integrated with roofing
(2)  Annual power generated and CO2 reduction effect (projected)
Item Effect of panel introduction All of Tokyo Station
(percentage contributed)
Annual power generated
Approx.
340 MWh/year
Approx.
98,000 MWh/year
(approx. 0.3%)
CO2 reduction effect
Approx.
101 t/year
Approx.
25,700 t/year
(approx. 0.3%)
When converted, this CO2 reduction effect is equivalent to the planting of approximately 7,214 cedar (sugi) trees.
(3)  Date activated
  February 25, 2011 (Friday)
   

2. Miscellaneous

(1)  The status of power generation by these solar panels can be viewed in real time on power generation output display monitors installed at four locations within Tokyo Station.
The power generation output display monitors show only the status of power generation on the Tokaido Line platform (tracks 9 and 10) at Tokyo Station.
(2)  This solar power system was introduced as a joint project with Chiyoda Ward.
(3)  The project has received a Grant in Aid for Promoting Regional New Energy and Related Technology Adoption from the New Energy Promotion Council.

For details, please refer to the following attachment.

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