Venice Chemical Plant Closes: 32 Jobs Lost as Italy's Industrial Base Shrinks

The Italy Ministry of Enterprise and Made in Italy (MIMIT), which oversees the country's industrial policy, has formalized the closure of the Altuglas chemical plant in Porto Marghera, near Venice, resulting in 32 job losses. The agreement was signed on March 17, following a preliminary deal reached between the American parent company Trinseo and Italian unions on March 10.

The shuttering of the Venetian facility marks another retreat for what was once one of Europe's most powerful industrial hubs and is part of a broader reorganization that also downsizes the group's operations in Rho, near Milan.

Why This Matters

• 32 workers at the Porto Marghera site will lose their jobs, receiving a severance package averaging two months' salary, with additional support for employees close to retirement.

• The closure threatens a domino effect on interconnected firms, including 3V Sigma, which relies on Altuglas for ammonia supply, and the Consortium SPM, facing higher costs for shared services.

• Porto Marghera's transition from a historic petrochemical center to a green hydrogen hub is now shadowed by mounting industrial losses. Remediation efforts have been slow, with only 21% of land and 0.1% of groundwater successfully cleaned since the site's production operations ceased in 2021.

• Trinseo's decision reflects a continent-wide competitiveness crisis in European chemicals, driven by high energy costs, Asian competition, and weak demand.

The Deal: Severance and Redeployment

Under the terms brokered at the MIMIT, the 32 remaining employees at the Porto Marghera plant—down from 51 when the redundancy procedure began—will receive an economic incentive equivalent to approximately two months' salary. Workers within two years of pension eligibility will also be granted a supplementary payment covering the gap between their full salary and the Naspi unemployment benefit (Italy's state unemployment support system), ensuring a financial bridge to retirement.

Meanwhile, most employees at the Rho facility in Milan, excluding those nearing pension age, will be reassigned to other operations within the Trinseo group, which maintains production of polymethyl methacrylate (PMMA) and a recently inaugurated pilot plant for depolymerization at that site. This dual-track approach—closure in Venice, redeployment in Lombardy—underscores the uneven geography of industrial restructuring in Italy.

Why Altuglas Shut Down

The closure of Altuglas Porto Marghera was driven by a confluence of strategic and economic factors. Trinseo announced in 2025 that it would permanently close its acetone cyanohydrin (ACH) production at Porto Marghera and its methyl methacrylate (MMA) operations in Rho by year-end, opting instead to source MMA from third-party suppliers. The company cited sustained losses over the past three years, overcapacity in the market, and the use of incompatible technologies by potential buyers as reasons no offers materialized for plant acquisition or conversion.

An internal analysis concluded that reinvestment in the Porto Marghera site would not be financially viable. The decision is expected to improve Trinseo's annual profitability by roughly $20M and reduce capital expenditures by $10M annually, though restructuring charges are estimated between $80M and $100M for severance, asset write-downs, and decommissioning.

A Wider Crisis in Italian Chemistry

The Altuglas closure is far from an isolated incident. It is symptomatic of a structural crisis gripping Italy's chemical sector, which is forecast to see production decline for the fourth consecutive year in 2026. Key factors include:

• Energy Costs: Italy faces high energy prices that have eroded the cost competitiveness of energy-intensive chemical manufacturing compared to other European producers.

• Global Competition: Aggressive pricing from China and lower-cost production in the United States have squeezed margins for European producers.

• Geopolitical Shocks: The Russian invasion of Ukraine and ongoing tensions in the Middle East have triggered volatility in energy markets and disrupted supply chains.

• Loss of Base Chemistry: Eni's closure of cracking plants at Priolo and Brindisi, alongside the shutdown of its Porto Marghera cracking and aromatics units in March 2021, has hollowed out Italy's base chemical capacity, increasing dependency on imports and weakening downstream industries.

• Policy Vacuum: Unions and industry groups have criticized the Italian government for failing to exercise strategic oversight over state-linked enterprises, allowing multinational profit motives to override industrial policy goals.

What This Means for Porto Marghera and the Veneto Region

Porto Marghera, once a symbol of Italy's post-war industrial miracle and home to one of Europe's largest petrochemical complexes, is undergoing a painful and uneven transformation. While the area is being repositioned as a "hydrogen valley"—with Eni set to begin producing approximately 1,700 kg of green hydrogen daily by summer 2026—the pace of closures has outstripped new job creation.

Mauro Vangelista, representing the Filctem-CGIL union in Venice, described the outcome as a "defeat for everyone"—workers, the region, and the broader industrial system. He noted that the Petrolchimico di Porto Marghera was "a fundamental part of Italy's industrial history," and each closure represents "another step backward" for the country's productive fabric.

The ripple effects are tangible. 3V Sigma, which depends on Altuglas for ammonia feedstock, faces operational uncertainty. The SPM Consortium, which manages shared services across the industrial zone, will see costs rise as the cost base spreads over fewer active tenants. The closure also complicates plans for reindustrialization, as potential investors weigh contamination liabilities against uncertain returns.

Despite the challenges, seven development projects were approved for incentives in 2024, promising nearly €60M in investment and around 100 new jobs in sectors ranging from chemicals and industrial manufacturing to environmental services and shipbuilding. A former ammonia storage facility is also slated for conversion to handle LPG and refrigerated propane. Yet these gains pale beside the scale of losses.

Trinseo's European Retrenchment

Trinseo's Italian restructuring is part of a broader European pullback. The company previously closed its latex production plant in Livorno in 2016, citing declining demand in the coated paper market. More recently, it has considered shutting down polystyrene production at Schkopau, Germany, to consolidate operations in Tessenderlo, Belgium.

This strategy reflects a shift toward higher-value, specialized materials and circular economy solutions—such as the Rho depolymerization pilot, which converts PMMA waste into regenerated MMA. However, it also signals a troubling dependency: sourcing critical intermediates from third-party suppliers, often outside Europe, undermines supply chain resilience and diminishes the continent's role in base chemicals production.

What Comes Next

The closure of Altuglas Porto Marghera raises urgent questions about Italy's industrial future. Unions are calling for a strategic reconversion plan anchored in industry, manufacturing, logistics, and port services—avoiding what they describe as proposals lacking "industrial and employment sustainability."

Yet without bold government intervention—lower energy tariffs, targeted subsidies, or public investment in critical intermediates—Italy's chemical sector risks further erosion. The transition to green hydrogen and biorefineries offers promise, but the timeline is long, the investment needs immense, and the immediate human cost acute.

For the 32 workers losing their jobs at Porto Marghera, the severance package may ease the immediate transition, but it cannot restore the industrial ecosystem that once defined the region. The question of whether Italy can reinvent Porto Marghera as a sustainable industrial hub—or watch it fade as a symbol of industrial decline—remains open, with implications reaching far beyond Venice.