sending an alert to said consumer according to said energy generated by {HEAD ~ each said renewable power system} for {TAIL ~ said threshold time period} 
sending an alert to said consumer according to said energy generated by { HEAD ~ each said renewable power system } for { TAIL ~ said threshold time period }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL