Post by Unum Post by Bret Cahill Post by Chom Noamsky
Bulk wind power is cheap, it's the cost of supporting it that makes it
uncompetitive at the delivery end.
No spreadsheet = no argument
It must be hard to keep singing the same old tune when all the actual
evidence points in the opposite direction.
"Exploring the impact on cost and electricity production of high
penetration levels of intermittent electricity in OECD Europe and the
USA, results for wind energy"
"With increasing penetration levels the cost reduction of wind
electricity caused by upscaling and technological learning is
counteracted by the cost increase due to (1) the need for additional back-
up capacity, (2) the need to generate wind electricity at less favourable
sites, and (3) discarded wind electricity because of supply–demand
mismatch. This occurs after about 20% wind electricity production as
percentage of current electricity production."
"At present the solar PV capacity connected to grids world-wide is small,
maybe 0.5 or 1 GW in total. For wind turbines, this figure is over 30 GW.
Wind electricity already has significant shares in the electricity supply
in some countries, e.g., about 17% in Denmark, or in parts of
countries, e.g., 25% in Schleswig–Holstein. Such highpenetrations
require technical adaptations such as additional back-up capacity or
transmission capacity . If wind and solar PV would penetrate at the
levels simulated in some future energy scenarios, such as RIGES, FFES
 and SRES, significant adaptations to the planning and operational
strategy of the electricity system will be needed. The most important
ones include the need for spinning reserve capacity, back-up capacity
(especially load-following or storage capacity) and transmission
capacity. These influence the overall production costs of electricity
from intermittent sources. They are also important for the
estimation of the CO2 abatement costs for wind and solar PV technologies."