Journal

ObservationsEssaysNotes

A machined bracket with a single bored hole, wet with oil, lit hard from one side.

What a solar installer knows that a solar investor does not

Two identical arrays, same modules, same inverter, same orientation. A decade later one of them is producing a quarter less. The difference was decided on the roof.

Mar 19, 2026

A torn sheet of white lying across a weathered metal plate, the two surfaces meeting on one hard diagonal.

Fig.A torn sheet lying across a weathered plate. Most of what is written here is an attempt to get one straight edge onto something that did not arrive with one.

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Or readThe register