This discount is for Chamber member homes or businesses. 

Solar installation costs are measured in "price per watt", with an average system costing around $2.65 "per watt". An average residential solar system is 12000 watts (12kW), so $0.10 per watt is equal to a $1200 discount for Chamber members.  An average commercial system is 40000 watts (40kW), so a $0.05 discount is equal to at least $2000 in savings for Chamber members.