Portugal’s ERSE Shifts More System Costs Onto Producers
Portugal’s regulator ERSE has put a new cost-allocation directive out for consultation: producers will finance roughly 35% of the €137 million social tariff bill for 2026, at 0.283 €/(kVA.month), retailers the remaining 65%.
It’s a small line item on its own. But it’s exactly the kind of change that a Project Development Services Agreement exists to catch before it surprises a sponsor at financial close. Regulatory cost allocations move every year, in every market we work in, and a business case built on last year’s assumptions is already out of date.
Running DSAs across Portugal, Spain, the UAE and African markets has taught us that bankability isn’t a single calculation done once at Ready-to-Build. It’s a discipline of re-checking tariff structures, grid charges, and system-cost allocations at every stage, and folding them back into the model before an investor or IPP ever sees the numbers.
Producers picking up a growing share of system costs is a pattern we’re watching across several jurisdictions, not just Portugal’s. The developers who price it in early keep their financing timelines intact. The ones who don’t renegotiate late, under worse terms.
How is your market splitting system costs between producers and retailers this year — has the balance shifted?
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