16
The well known 2003 blackout in U.S. and Canada seems to be the highest economical loss ever during an
outage with an estimated total cost of USD 4 bn to USD 8 bn. But even short blackouts
which occur several times
during a year in the U.S. sum up to an annual economic loss between USD 104 bn to USD 164 bn.
Such short term outages or even just dips in voltage seem to be harmless, however, they can have severe
impacts in case production and supply chain depend on accurately synchronised production processes.
Paper manufacturing is a prominent example of such a business, but also the production of semiconductors.
Apart from the reduced output
and the waste of raw materials, the inability to supply the customer is critical due
to the ever increasing interdependencies of supply chains.
Costs per customer differ significantly between residential, commercial, and industrial customers. The costs can
be described as the Value of Lost Load (VoLL), which is the estimated amount that customers would be willing to
pay to avoid a disruption in their electricity service. Highest costs accrue during the first
hour and then declining
slowly thereafter, but they additionally differ according to various elements:
•
Industry sector
•
Size of the enterprise
•
Duration and frequency of past events
•
Time of day
and by season of the year
•
Proportionate to household income
17
crobriefing on Power Blackout Risks
12
The Economic Impacts of the August 2003 blackout, prepared by the Electricity Consumers Resource Council (ELCON) – February 9, 2004
13
http://www.policyholderperspective.com/2009/06/articles/first-party-property/2003-blackout-held-to-involve-property-damage-sufficient-
to-support-claim-under-property-policy/
Dostları ilə paylaş: