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Hello again.

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In the next video,
we're going to talk about

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and the wind farm itself
now behind me is a wind turbine.

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That is what actually sits inside
the nacelle on the top of the pylon.

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Now we have the rotating head
to a gear box,

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with the braking system on it
through a shaft to a generator.

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Now offshore, we don't just have the wind

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farms and wind turbines,
we have offshore substations.

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So so we've got 200 of these connected
together.

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The power goes to a substation where it is
stepped up.

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It is stepped up to transmit
it back to shore.

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It is transmitted to stations ashore
where the substations

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that again convert it, step it up
or step it down to whatever is needed.

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Not only

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are there substations ashore,

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there is a massive network of transmission
cabling.

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It takes it to places where it's needed.

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It doesn't come straight from there
to your home.

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It is transmitted all over the country,
and they tend to use

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a lot of the power of wind farms
to offset higher usage in other places.

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They are not

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massive producers of electricity,
but when you string many together,

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they then produce enough
to make it worth doing.

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It is quite a new technology.

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They've had to produce new forms of

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transmission networks for the power

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that comes from a wind turbine again,

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to put it into context.

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The Hornsea one
and two offshore Orsted projects,

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they produce
a great deal of electrical energy.

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Now it's free nearly.

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Once you've got everything in place,
you're talking maintenance.

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I do believe
wind turbines have got a life of 20 years.

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Now, if these are maintained

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properly,
I'm sure that will be extended. So

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to actually see one of these
being put in place is quite

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phenomenal.

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They can nearly do it in a day.

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They sink the foundations
into the bed of the sea.

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They then send the ship out.

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It jacks itself up on stilts.

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It drops the pylon onto the foundations.

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Nacelle blades afterwards, and it's done.

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I've actually sat on the ship and watched
it, and it is absolutely amazing to see.

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Again, we are producing new forms
of technology to be able to do this.

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So not only is the technology used

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for gathering electricity from the wind,

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it is also used for other things
many, many other things.

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There are smart
materials used in the production

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of wind turbines,
the blades that are actually being used.

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They are using new technologies

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and new materials for those
so they can actually be recycled.

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They had a bit of trouble
with them for a start,

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they couldn't recycle old blades
that has been looked at.

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It's been approached Orsted again,
one of the leaders in the field.

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I'm not blowing Orsetd's trumpet,
but they are good at what they do.

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If they weren't, they wouldn't

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be doing it because at the end of the day,
everybody's got to earn a profit .

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Now, once electricity hits the shore,

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it goes to a further

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secondary substation
where the voltage is dropped.

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I mean, voltage moved around the country
22 K.V.

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44 k.v.

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we're talking high voltages
once that was arrived on your doorstep.

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It will then go to a secondary substation
where it is stepped down,

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and then it will go
to a smaller substation where it is

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dropped down even further to 240 volt
single phase, which you use in your home.

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So every time you plug your kettle in
and switch it

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on, you're connecting yourself, probably
about 80% of the time to a wind farm.

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Not only is clean energy
being produced by wind farms,

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Drax all the way has changed to biomass

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now, which I'm sure we will come to
in another video to talk about biomass.

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But it is starting to offset

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conventional energy production systems
of burning coal, oil and gas.

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We are now going towards wind farms
and actually converting power stations

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to burn, as we call it
now, renewable low carbon footprint fuels.

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As I say, we will come back
to that in a later video.