Kosovo is a transit corridor, not a shortage

Read Kosovo's net cross-border position on its own and the system looks close to balanced. Across the week examined it averaged +87 MW — a rounding error against annual demand of roughly 7.4 TWh.

That reading is wrong, and the way it is wrong matters for planning.

The gross figure is eight times the net one

Across its four borders Kosovo moved an average of 705 MW in the same week. The net position is what remains after those flows cancel:

• North Macedonia → Kosovo: roughly 353 MW inbound, on average
• Kosovo → Montenegro: roughly 291 MW outbound
• Serbia → Kosovo: roughly 43 MW inbound
• Kosovo → Albania: roughly 18 MW outbound

Power arrives on one side and leaves on another. Montenegro then moves roughly 419 MW out to Italy, which is where a large part of the region's surplus physically leaves for the EU.

Every one of these links reversed direction at some point during the week. The Kosovo–North Macedonia border swung between −56 and +886 MW; Kosovo–Serbia between −329 and +269 MW. These are not steady imports with a fixed counterparty. They are a corridor responding to price and availability elsewhere.

Why the distinction changes the planning question

A system that is genuinely short has one problem: it needs more energy, from somewhere. A corridor has a different one.

Its network is sized by flows it does not own. Transmission capacity, losses and reinforcement needs are driven partly by transit between neighbours, not only by domestic demand. A planning study that scales the network to national load will under-build.

Its security of supply depends on borders it does not control. If the corridor's function is to move power between two other systems, congestion or outage elsewhere lands on Kosovo's network as an operational problem it did not create.

Its adequacy assessment is not a national exercise. Standard resource adequacy asks whether domestic generation plus imports covers domestic demand. That framing assumes imports are available when needed. In a corridor, the same interconnector that supplies you at 19:00 may be fully occupied moving somebody else's power at 03:00.

What this does not establish

These are physical flows, not commercial exchanges. Power follows impedance, not contracts, so electricity can cross a country that neither bought nor sold it. Nothing here supports a statement about who traded with whom — that requires market data, and Kosovo's day-ahead market is cleared by ALPEX rather than appearing in the transparency feed used for these flows.

The week examined is one week. Seasonality matters: hydro-led neighbours behave very differently in a wet spring than in a dry autumn, and a transit pattern observed in August should not be assumed to hold in January without checking.

The practical consequence

For a utility or a ministry, the useful question is not "are we short?" but "how much of what crosses our network is ours, and what does the remainder cost us to carry?"

Answering it requires the gross flows, not the net position — and a network model that represents the borders as the operational constraints they are, rather than as an assumed import line of convenient capacity.