Week 04 — How Big Is the Weather?

The size of a weather system set against the size of the grid underneath it.

Week 04 · spatial-extent · 17 August 2026

Geographic diversification helps only when the grid is larger than the weather pattern shutting it down.

Property

spatial-extent

Stance

Complicates it

How

A high-pressure system drawn over a transmission map.

Studio activity

One farm, then several nearby, then widely separated, then interconnected regions.

Spreading generation out is the standard answer to correlation, and it is a good answer with a precise limit: it works when the system is bigger than the weather, and stops working when it is not.

How this complicates the thesis#

Week 3 made correlation the enemy and diversification the obvious remedy. Week 4 takes the remedy back apart. A weather pattern that covers the whole interconnected area is not diversified away by moving turbines around inside it — and the transmission needed to reach genuinely uncorrelated weather is itself a design cost, not a free assumption.

In the session#

We draw one anticyclone over a transmission map and grow the portfolio underneath it in four steps: one farm, several nearby, widely separated, then interconnected regions. You watch the correlation fall, and watch where it stops falling.

Its relationship to the canonical event#

The event is defined for one synchronous area, modelled as a single node. That is a deliberate simplification, and this is the week that shows you what it costs.

What next week needs#

Diversification changes where output comes from. It does not change what happens inside a turbine when the wind is merely weak — week 5.