Eco-terrorists attack Washington state substations on Christmas Day?

Source: (https://bit.ly/3YR5y2A)
Increased sabotage incidents on the US power grid are very
concerning. On Christmas Day, three substation facilities were
vandalized in Pierce County, Washington, plunging thousands
of customers into total darkness, according to ABC News.
Two of the power substations were operated by Tacoma Public
Utilities and one by Puget Sound Energy. The Pierce County
Sheriff's Department said all three were attacked, but there are
no "motives or if this was a coordinated attack on the power systems." 
The sheriff's office said nothing was stolen from the substations,
while equipment was only vandalized. There was no mention
of what devices were damaged or the tool to inflict damage.
"Unfortunately, the impacts to our system from today's deliberate
damage are more severe in some places than initial testing indicated.
Some customers will be restored closer to 8 AM tomorrow," Tacoma
Public Utilities wrote in a statement on Sunday.
The Tacoma substation attacks follow "deliberate attacks" on two
power substations in North Carolina early this month. Duke Energy
personnel found bullet holes in transformers. 
We've asked the question of who is intentionally sabotaging the US
power grid. In the first eight months of the year, there were 106
attacks on the electrical grid, the highest number ever recorded
in a single year.