present-in-html skill, every layout

Northwind Array

A fictional offshore wind farm, told once in each of the template’s 28 layouts.

Example deckPress S for 32 themesOctober 2026

Agenda

The site and the machine 5 min
The numbers 10 min
Building it 10 min
Running it 5 min

Part one

1

The site and the machine

Eighty turbines, 45 km out, in 38 m of water.

One turn of the rotor powers a home for three days.

Why this stretch of sea

Steady wind. 10.2 m/s average at hub height.
Shallow banks. 30 to 45 m, deep enough for monopiles.
A grid with room. Spare capacity at the coastal substation.
A port close by. 70 km to a quay that can take the blades.

Monopile or jacket

Monopile

One steel tube, 10 m wide
Fast to drive, cheap to make
Best up to about 45 m of water

Jacket

A four-legged lattice pinned with small piles. Lighter in steel, slower to install, and the choice for the deep north-east corner.

Now, next, later

Now

Seabed survey and cable route design.

Later

Turbines, first power, then a 30-year run.

A technician in an orange suit climbing on top of a turbine above the sea

The people

Work happens 150 m up

Technicians reach the nacelle by boat and ladder, and work in pairs on ropes. Weather decides every shift.

The round root end of a giant turbine blade inside a factory hall

A blade longer than a football pitch

115 m of glass and carbon fibre
Bolted on with 200 studs
Built in one piece, shipped one at a time

Installation

One blade, one lift, one calm morning

Cranes stop at 12 m/s of wind, so crews wait for the window.

Planned yearly output

4.6TWh

About the electricity used by 1.3 million homes.

Fictional figures. 1.2 GW at a 44% capacity factor.

The farm in three numbers

80Turbines of 15 MW

236mRotor diameter

44%Capacity factor

Winter does the heavy lifting

Expected output by month, in gigawatt-hours.

Month	GWh
Jan	520
Mar	440
May	300
Jul	250
Sep	350
Nov	480

Fictional yield model, alternate months shown.

Choosing the turbine

	12 MW	15 MW	18 MW
Turbines for 1.2 GW	100	80	67
Track record	Five years	Three years	Prototype
Port fit	Yes	Yes	Quay upgrade

From survey to first power

2026
Survey
Seabed, birds, wind.
2027
Consent
Permits and grid offer.
2029
Foundations
80 monopiles driven.
2030
First power
Turbines online in rows.

How a turbine goes in

Drive
Hammer the monopile into the seabed.
Connect
Bolt on the transition piece.
Lift
Tower, nacelle, then three blades.
Energise
Pull in the cable and test.

The electrical path

From rotor to the grid

Simplified. A real farm of this size needs two export cables.

Power in the wind

One turbine at 10 m/s

P = ½ρAv³C_p = 12.9 MW

ρ: Air density, 1.225 kg/m³
A: Swept area, 43,700 m²
C_p: Power coefficient, 0.48

What it is made of

Turbine T-14

A gearbox alarm on a winter night

What happened

Vibration rose over six hours in a storm. The turbine stopped itself before anyone was called.

Finding

A worn bearing, caught early. Replaced at the next calm spell.

Vibration7.8mm/s

Oil temp62°C

Wind19m/s

21:10Vibration starts to climb
02:40Turbine stops itself
07:30Remote check confirms the bearing

Why we chose a bigger turbine

The port can handle blades up to 120 m long.
Every foundation costs the same, whatever sits on top.
Fewer, larger turbines
Eighty instead of a hundred: twenty fewer foundations and cables.

Quick check

Wind speed doubles. How much more power is in the wind?

Two times
Four times
Eight times
The same

The next phase

$90MThe gap to a final decision. $150M is committed.

Surveys45%
Grid deposit35%
Permits20%

Capacity factor in four lines

    rated_mw = 1200
    hours = 8760
    produced_mwh = 4_620_000
    print(produced_mwh / (rated_mw * hours))  # 0.44

The sea decides the schedule. We just listen to it.

Site managerNorthwind Array (fictional)

The project team

Sara NilsenProject director

Omar AzizGrid and cables

Jonas MeyerMarine operations

Lucia CostaEnvironment

Questions welcome

Thank you

Northwind ArrayA fictional projectMade with the present-in-html skill: hisham-abuella.github.io/present-in-html

Appendix

Backup slides and sources.

Sources and credits

Northwind Array A fictional project. Every figure is a round, realistic number for illustration only.
Power in the wind P = ½ρAv³Cp, the standard formula for wind turbine output.
Photos and textures Generated locally with the Qwen Image model in Draw Things, October 2026.