On 15/08/2019 14:38, Roger Hayter wrote:
Pancho wrote:

On 15/08/2019 13:15, The Natural Philosopher wrote:

Its the same as a battery. You need primary energy to charge your
hydrogen tanks.

Probably by electrolysing water using grid electricity from coaal and
gat power staions.

No comment on the viability of Hydrogen fuel cells but surely
electrolysing water is something intermittent renewable sources are
suitable for, i.e. in the UK = wind.

The problem with that is having plant and employees lying idle when
there isn't any wind.

It is the ontrinsic problem of intermittent reneables., The high peak to
mean ratio is inefficient in terms of capital resources, Build for the
peaks, get returns from te mean#

--
"The most difficult subjects can be explained to the most slow witted
man if he has not formed any idea of them already; but the simplest
thing cannot be made clear to the most intelligent man if he is firmly
persuaded that he knows already, without a shadow of doubt, what is laid
before him."

- Leo Tolstoy