passive solar lighting

Passive Solar Lighting refers to the use of optics and often building orientation to channel natural sunlight into indoor spaces for interior lighting (Many industry organizations separate out system designs that utilize sun trackers or any other moving parts, but here we include such systems in the passive lighting category)

Historical investment trends and number of deals for passive solar lighting

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Company	Country	Status	Amount ↓
Company: Origin Energy	Country: Australia	Status: Acquired	Amount: $12,290,000,000
Company: Stegra	Country: Sweden	Status: Private	Amount: $1,606,733,000
Company: Yingfa Group	Country: China	Status: Private	Amount: $1,450,000,000
Company: Enel Group	Country: Italy	Status: Public	Amount: $1,200,000,000
Company: Adani Green Energy	Country: India	Status: Public	Amount: $1,120,000,000
Company: IM Motors	Country: China	Status: Private	Amount: $1,100,000,000
Company: EDP Renovaveis	Country: Portugal	Status: Public	Amount: $1,000,000,000
Company: Invenergy	Country: United States	Status: Private	Amount: $1,000,000,000
Company: Redwood Materials	Country: United States	Status: Private	Amount: $1,000,000,000
Company: Rox Motor	Country: China	Status: Private	Amount: $1,000,000,000