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Sunday, March 29, 2020

Electric Motors vs. Internal Combustion Engines -- An Analysis From Great Britain

The more time 
that you spend
thinking about 
electric vehicles 
replacing all
internal combustion 
engines, the more
problems you think of.

Starting with the time to
fill up a gas tank with
 gasoline = a few minutes,
-- unlike the much longer 
time needed to recharge 
electric vehicle batteries.

Also, about 70% 
of Great Britain’s 
entire existing 
electricity-power 
capacity would be 
needed to charge 
a 100% electric UK
motor vehicle fleet.


A typical house 
in the UK draws 
2-3kW of electrical 
power, averaged 
over the year, 
with peaks up to 
5kW in winter. 

An electric vehicle
slow charger 
draws 7kW, with 
a fast-charger 
drawing 15kW. 

The electric 
power substations 
in most suburbs 
were installed 
before the need 
for recharging 
auto batteries, 
so most will need 
to be upgraded 
to handle the 
extra demand.



Charging 
Infrastructure
Needs:
About 40% of 
UK personal cars 
do not 
have a garage, 
so are parked 
on the street.

Charging 
all personal
automobiles
will become a 
serious problem, 
because many 
local authorities 
have bylaws 
preventing 
electric cables 
from crossing 
sidewalks.

Vehicles used 
by commuters 
will need many
charging points, 
either at home,
or at  the place 
of work, or both. 

During a major 
2012 winter storm, 
when the M25 
London orbital road 
was gridlocked,
electric cars 
with dead batteries 
delayed the clear-up.

Infrastructure to support
100% electric vehicles 
by 2050 is a massive, 
and maybe unachievable,
UK ambition. 

Definitely 
unachievable 
by 2030.