# Sider Alloys Italia S.p.A.

Group: Sider Alloys  
Country of seat: Italy  
Data as of: 2026-10-20, version 2.31  
Page: https://ai-waw.com/en/companies/sider-alloys-italia-s-p-a

## Plants

### Portovesme – primary aluminium smelter (formerly Alcoa) (Portoscuso, Italy)

- Link: smelter
- Status: idled
- Metals: aluminium
- Capacity: 150 kt/yr
- Coordinates: 39.2, 8.41 (© OpenStreetMap contributors, ODbL 1.0)
- Source [B]: Alcoa (Howmet archive), announcement “Alcoa to Close Portovesme Smelter in Italy”, 25.08.2014 – 150 kt/yr, idle since 11.2012 – https://www.howmet.com/?p=13711
- Source [C]: UIL, memorandum for the hearing before the 10th Committee of the Chamber of Deputies on the Portovesme industrial hub, 14.05.2025, p. 4 – production has not been resumed – https://documenti.camera.it/leg19/documentiAcquisiti/COM10/Audizioni/leg19.com10.Audizioni.Memoria.PUBBLICO.ideGes.64040.14-05-2025-18-12-06.615.pdf
- Source [B]: MIMIT – Verbale di incontro SiderAlloys S.p.A., 21 febbraio 2024, minutes of the meeting: revamping dependent on financing (SACE “Green” guarantee), possible start in 2024, full capacity end of 2025/start of 2026, target 418 employees in 02.2026; CIGO announced if financing is lacking – https://www.mimit.gov.it/it/impresa/imprese-in-difficolta/verbali/verbale-di-incontro-sideralloys-spa-21-febbraio-2024
- Source [B]: MIMIT – komunikat „Sider Alloys, Mimit: verificate le condizioni di realizzabilità del piano industriale”, 17.04.2025, announcement: rising revamping costs, expiry of Invitalia's participation deadline, technical mission of a large aluminium operator interested in the investment; no capacity figures – https://www.mimit.gov.it/it/notizie-stampa/sider-alloys-mimit-verificate-le-condizioni-di-realizzabilita-del-piano-industriale
- Source [C]: Austrian Federal Ministry of Finance, World Mining Data 2026, Table 6.4 (production by country, 2020–2024) – no entry for Italy in the “Aluminium” sheet, arkusz Aluminium – https://www.world-mining-data.info/wmd/downloads/XLS/6.4.%20Production_of_Mineral_Raw_Materials_of_individual_Countries_by_Minerals.xlsx
- Note: Electrolysis idle since 11.2012 – plant taken over by Sider Alloys in 02.2018; primary aluminium production has not resumed.
- Verified at source: 2026-10-08

## Scrap buyer

> A picture of the market – not a commercial recommendation.

- Portovesme – primary aluminium smelter (formerly Alcoa) (Portoscuso, Italy): smelter; Metal: aluminium; Accepted grades: grades not established in the register documents

[Scrap buyers in the Recycling tab](https://ai-waw.com/en/recycling.md)

## Metal flow analyses

- [EU-27 Aluminium Flows](https://ai-waw.com/en/metal-flows/eu-aluminium-flow-analysis.md)
- [Aluminium Flows in Italy](https://ai-waw.com/en/metal-flows/aluminium-flows-italy.md)