Greece Reprices Cyprus Cable Returns

Greece's energy regulator has opened a consultation on how much revenue the Great Sea Interconnector should be allowed to collect from electricity bills. On paper, this is a change to a financing formula. In practice, it is about who carries the risk for a 1,208 km undersea cable linking Cyprus to Greece, and how much of that risk eventually lands on consumers.

The project matters beyond Athens and Nicosia. It would end Cyprus's status as the EU's last electrically isolated member state, a position Malta understands well: island energy policy is never just about generation, but about dependence, security and the price households pay when infrastructure choices narrow.

What gearing changes and why it matters for bills

The consultation, opened on 21 August by RAAEY, Greece's energy and water regulator, covers the revenue formula for the Greek share of the cable (iEnergeia). Responses are due by 11 September. The cable is planned as a 1,208 km, 1,000 MW undersea electricity link between Cyprus and Greece (European Commission).

The key variable is gearing: the assumed share of debt in the project's financing. Regulators use it to calculate the weighted average cost of capital, or WACC, which is the blended financing cost used to set the annual revenue ceiling the operator can recover through grid charges on electricity bills.

ADMIE, Greece's grid operator, wants gearing set at 50-60% during construction and 40-50% in the years after completion, when the asset's cost is gradually written down. The existing formula reportedly assumed 60-80%, above the 45-60% used for ADMIE's ordinary grid business (Sigmalive).

Lower assumed debt means a higher assumed equity share. Equity is more expensive than debt because investors take more risk. That raises the allowed return, and with it the amount the project may collect each year.

That annual revenue stream is what banks look at before signing loan agreements. For ADMIE and Meridiam, the French investor that acquired a 66% stake in August, a friendlier formula makes financial close easier to reach (Politis, iEnergeia). For Greek and Cypriot electricity users, it means the part not covered by the EU grant of roughly €657m is recovered through grid charges (CINEA).

Cyprus disputes the bill

Greece can adjust its own formula, but the cable's economics depend on both sides accepting the cost base. Under the current split, Cyprus carries 63% of the residual costs on the Greece-Cyprus section, despite having a much smaller consumer base (Cyprus Mail).

The disagreement is not marginal. Cyprus's regulator, CERA, has reportedly recognised only about €82m of the roughly €251m ADMIE says it has spent so far, around 32% (Proto Thema).

The Cypriot government has also withheld the first of five promised €25m annual advance payments. It says it will pay only once a NAVTEX, a maritime notice authorising seabed surveys, is issued and physical work resumes (Philenews). No such notice has been publicly confirmed (Cyprus Mail).

Who gains, who is exposed

If the cable is built on time, Cyprus gains most. A link to a larger grid would improve supply security and give it access to cheaper power. ADMIE and Meridiam would gain a long-life regulated asset. Greece would strengthen its role as an energy bridge in the eastern Mediterranean.

If delays build up and approved costs rise, consumers become the backstop. Former CERA chairman Andreas Poullikkas has argued that grants and market revenues should be deducted before anyone talks about higher bills (Cyprus Mail). That is right as accounting. But the European Court of Auditors has warned that cross-border electricity projects repeatedly suffer delays, pushing back revenue, increasing financing costs and reopening the question of who pays (European Court of Auditors).

Greece can improve the bank model. It cannot make Cyprus accept costs it does not recognise. Until both regulators agree on what has been spent and what can be collected, the cable is more bankable in a spreadsheet than in cash.