building
cherry blossoms
eco
ecology
ecology image
education
educational institutions
energy
energy from sunlight
energy saving
facility
flower
gymnasium
japan
kansai
kansai region
kinki
natural energy
osaka
osaka prefecture
peak power suppression
plant
power generation
power outage
power restriction
power saving
power shortage
power supply limit
power suppression
prunus yedoensis
rolling blackouts
sakura
school
school building
schoolyard
solar power
spring
voluntary power saving
wall surface