LONDON

Outer appearance

Propellers for wind power generation

Total output of 2.56 kW with five propellers each outputting 512.04 W

Panels for solar power generation

Total output of 10.053 kW with 96 panels each outputting 104.72 W

Indicator of stored electricity

The amount of stored electricity (remaining electricity) is indicated on five levels.


Programming to light up the sign

The sign and the indicator are lit together.
The indicator is switched off when the lights for the sign are turned off and switched on when the sun rises (the indicator does not use standby electricity).

Nov. to Feb. (in winter): Lit from 30 minutes before sunset to 10:00 p.m. and from 6:00 a.m. to sunrise
Mar., Apr., Sep. and Oct. (in spring and fall): Lit from 30 minutes before sunset to midnight
May to Aug. (in summer): Lit from 30 minutes before sunset to 3:00 a.m.

Simulation of power generation

Full lighting

Annual average sunshine hours = Four hours per day Total output of 12,612 Wh lit for 6.9 hours
Month with minimum sunshine hours (Jan) =One hour per day Total output of 5,073 Whlit for 2.7 hours
Month with maximum sunshine hours (June) =Seven hours per day Total output of 20,151 Whlit for 11 hours
In case of zero sunshine hours Total output of 2,560 Whlit for 1.3 hours

Level 1 (outline lighting)

Sunshine hours=two hours (in Nov. and Feb.): Lit for seven hours
Daylight hour= one hour (in Jan. and Dec.): Lit for 4.7 hours

Simulation for Lighting Hours

Month Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
Total output (kWh)
/Month
160.5 218.3 404.0 469.5 566.3 626.6 566.3 566.3 469.5 322.8 233.9 160.5
Lighting hours/Day 2.7 4.1 6.9 8.2 9.6 11 9.6 9.6 8.2 5.5 4.1 2.7

Annual total output:4,764kWh

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