Today, AT&T, Sprint, T-Mobile, US Cellular and Verizon have responded to
the FCC's inquiry about their prepardness for California wildfires and
preventative public safety electric grid shutdowns.
PSHB proceeding number 19-251
https://www.fcc.gov/ecfs/search/filings?proceedings_name=19-251&sort=date_disseminated,DESC
As typical, the carrier responses were mostly happy, happy, joy, joy
letters.
The FCC asked about backup power readiness, but last year many of the
communication outages were because of damaged fiber routes during
wildfires isolating cell towers and mobile switching stations. Carriers
minimize spending on route diversity in rural areas. COWs, COLTs, etc.
use alternative satellite and microwave backhaul, but alternative
backhaul is less common for permanent facilities.
I didn't hear about any WISPs during last year's wildfires.