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