Overview
- The government published the 2030 transmission plan on Thursday, November 12, 2026, committing €17,143 million to expand and reinforce Spain’s high‑voltage network.
- Catalonia is allocated €1,295 million, equal to 7.5% of the total, and the plan foresees building 437 km of new lines and enlarging 640 km of existing lines in the region.
- About €2,010 million is ringfenced for international interconnections with France, Portugal, Andorra and Morocco while the remaining €15,133 million targets the national grid.
- The document names specific works such as a new Lleida–Barcelona circuit, new substations including Transbadalona (220 kV) and Isona (400 kV), and repowering of the Aragón‑Ascó‑Vandellós 400 kV double circuit.
- Most spending is concentrated late in the decade with annual allocations rising to €4.8bn in 2028 and €5.4bn in 2030, several projects including the Port of Barcelona 400 kV substation are deferred past 2030 which could create regional bottlenecks and delay connections for new homes and industries.