Depending on the amount of power they are generating, they could be hitting the limit of production at peak times. The grow houses could also be exceeding the rated capacity of residential equipment.
Around here the power companies will tell you to set your thermostat higher to reduce load on the grid during heat waves. (Or just change it themselves if you opted for a reduced rate to allow them to do so)
It’s WoL, not WLAN. WLAN is Wireless Local Area Network.