While judging that the creation
of a similar but
separate licence for storage «would add unnecessary confusion» due to the characteristics shared by storage and existing
generation, Ofgem has said it will adopt the
Electricity Storage Network's definition
of the technology in legislation.
As a
separate matter, however, coal - fired power plants in the United States are older, on average, than competing forms
of electricity generation.
According to the authors, the U.S.'s spare nighttime
electricity capacity could power a large fleet
of PHEVs; since they require about 10 hours
of nightly charging, Joe Sullivan
of the Argonne National Laboratory, one
of the authors, nighttime
electricity could allow PHEVs to replace up to 34 %
of today's light - duty fleet - and only consume 13 %
of the fuel used nationally for
electricity generation in the process.Michael Kintner - Meyer
of the Pacific Northwest National Laboratory - in a
separate study - found that 43 %
of the fleet could be replaced by PHEVs with existing nighttime capacity.