Complex sentence: As at April 2016 this is thought to be the first proposed wind farm in New Zealand to have allowed it's construction consents to lapse, other windfarms have had their consents extended, although the approval of consents extensions may not continue indefinitely.
Split into simpler sentences: As at April 2016 this appears to be the first proposed wind farm in New Zealand to have allowed it's construction consents to lapse. Other windfarms have had their consents extended, although the approval of consent extensions may not continue indefinitely.