There are home versions of these heliostats too, I always thought it would be a nice home improvement. You could make a new sunny room, sunnier garden, or a warmer patio.

Just googling, $2,000 gets you 1300 watts of heat. Or 115,000 lumens. (100 watt incandescent is 1600 lumens). The mirror part is about 4 feet x 4 feet.

https://lm.solar/order/