The ECB raised its baseline interest rate earlier this week, doing so, it said, in response to the jump in energy prices, which has driven inflation above 3% in the eurozone. Inflation in the rest of the economy—and it’s the same in the US and in the rest of the OECD-esque economies—remains largely muted and under control except to the extent energy costs percolate through them, impacting personal and commercial transportation and shipping, food production, manufacturing, and so on. It’s energy inflation that’s at the core of inflation in today’s overall economy, not a broad excess demand or supply deficiency.

So, I wonder.

When a central bank raises its baseline interest rate, it’s using, if not a cudgel, at least a two-handed sword to address a problem. That’s appropriate, when the problem is broad. But if the problem is narrow, a dagger would seem more appropriate (to continue the metaphor, or perhaps a scalpel, to soften the imagery a little).

Today’s inflationary problem seems narrow, for all its broad effect. It’s energy that’s causing the overall inflation. If raising interest rates is the way to combat inflation, what if a central bank were to raise interest rates only on basic energy production—oil, natural gas, and coal at their input stage, and solar and wind facilities at their component manufacture stage—while leaving its otherwise baseline interest rate unchanged for the rest of the economy?

Clearly that would take some restructuring of its baseline interest control, separating out energy from the rest of an economy. That might demand legislative support. But there’s no reason a farmer should have to pay a higher interest to borrow to get his seed for next year, when it’s core energy that is impacting the cost of his money and not a shortage of seed or a flood of farmers into the market for that seed. It’s the same for folks borrowing to buy a house or car and for those building houses and factories. It’s underlying energy, not a shortage of labor or a spike in buyers, that’s inflating the cost of their money.

On the other hand, raising interest rates on basic energy production would reduce the amount of energy produced. That would lead to reductions in the supply of all the things to which energy is central in their production. The demand for energy is pretty inelastic in a modern economy—it’s going to be produced, within broad limits, regardless of price, and that price increase still is going to percolate through an economy.

So I wonder (still I wonder). It seems to me that targeting the inputs to energy production—crude oil, natural gas coming out of the well, coal leaving the mine, metals arriving at the solar panel or windmill factory while leaving rates on the rest of an economy alone would reduce inflation growth in the rest of the economy while limiting supply deficiencies more than does raising interest rates all across an economy.