How to verify grid extension progress between official censuses

A results framework built around a national census or a Demographic and Health Survey has a structural problem: the indicator updates every five to ten years, but your disbursement schedule, your implementation status reports, and your mid-term review all run on a much shorter clock. By the time the next household survey confirms electrification rates in your programme districts, you've already approved two more tranches based on something other than that number.

This is the gap most electrification-component economists eventually hit. The project document cites census-based coverage as the outcome indicator. Fine for appraisal, fine for the final evaluation. Useless for the eighteen months in between when someone on the task team has to write "on track" or "off track" in a progress report.

What the official rounds actually give you, and when

A population census typically asks one or two questions about electricity access, and it asks them once a decade. A DHS or MICS round is more frequent in some countries, often every three to five years, but it samples households rather than counting connections, and fieldwork-to-publication lag alone can run twelve to eighteen months. Utility connection data, where it exists and where it's shared with the bank, tends to track new service agreements rather than actual energized lines, which is a different thing in places where meters go in after the wire does.

None of these are wrong. They're just slow, and slowness is the whole issue. A task team needs something that moves on the same timeline as the loan.

What to actually check between rounds

Strip the question down to what a disbursement decision needs: is new electrical infrastructure reaching the settlements the project was supposed to reach, and is that reach changing month to month in the direction the contractor's schedule says it should? That's a narrower question than "what is the electrification rate," and it's one you can answer with less data.

The proxies people reach for are grid extension maps from the contractor (useful but self-reported), utility billing extracts (useful but lagged and often withheld until commissioning), and site visits (accurate but expensive to scale across a programme area with forty or sixty settlements). Each works. None of them covers the full portfolio on a monthly cadence without a field team you probably don't have budget for.

Where a night-light read fits in

This is the gap Electrification Map was built to sit in. It's a monthly panchromatic satellite read of night-light intensity over the settlements in a programme area, built specifically to sit between census rounds rather than replace them. If a settlement goes from dark to lit over three or four monthly passes, that's grid extension and energization happening in a place where it wasn't happening before. If a cluster of villages on the rollout schedule stays dark past the date the civil works report says they should be connected, that's a flag worth raising before the next site mission, not after it.

It isn't a substitute for the census-based outcome indicator in your logframe. It won't give you a household count or a connection rate, and it doesn't claim to. What it gives you is a read on direction and timing between the moments when the official numbers land, which is exactly the information an implementation status report needs and exactly the information a five-year survey cycle can't supply on demand.

For a portfolio that spans a dozen financed electrification components across different countries and different utilities, that monthly cadence is also the only way to compare rollout pace across projects without waiting for each country's survey calendar to line up. A project in year two in one country and year four in another can be checked against the same light-intensity baseline on the same month, which a mixed bag of national statistics offices never quite lets you do.

If your next progress report needs something firmer than a contractor's word between survey rounds, that's the gap Electrification Map is built to fill.