In late May 2026, Iren reported that Turin had experienced approximately 15 power outages in just 72 hours—far fewer than the 45 blackouts that struck during a three-day heat wave in mid-June 2025, but still evidence of an aging electrical grid under stress. The northern Italian city remains gripped by vulnerability to summer power failures as temperatures soar and demand for air conditioning surges, pushing an already aging electrical system to its breaking point.
This update, provided by Iren executives in spring 2026, reviews the emergency measures deployed after the 2025 crisis and outlines what Turin residents can expect as the multi-year grid overhaul progresses.
The Italy-based utility company, which manages Turin's electrical network through its subsidiary Ireti, managed to restore power to roughly 80% of affected customers within 30 to 45 minutes even during the most severe incidents. This improved response time stems from emergency protocols and rapid-response infrastructure implemented following the devastating June 2025 blackout wave.
Emergency Response Infrastructure
Gianluca Riu, operations director at Ireti, explained in spring 2026 that the accelerated restoration times stem from preparatory measures implemented after the May-June 2025 crisis. The task force comprises 100 qualified technicians trained specifically to operate inside secondary transformer substations—identifying faults, executing repairs, and performing emergency excavations when underground cables fail.
Beyond personnel, Iren has more than doubled its technical assets on standby, now capable of deploying up to 30 portable generators simultaneously across the metropolitan area. This equipment reservoir allows the utility to bypass damaged sections of the grid and restore electricity to critical facilities and residential zones while permanent repairs proceed underground.
The recurring outages throughout 2025 disrupted daily life for thousands of Turin residents, causing traffic light failures, trapping people in elevators, forcing shops to close temporarily, and leaving entire neighborhoods without refrigeration or air conditioning during peak afternoon heat.
The Infrastructure Deficit
Gianluca Bufo, CEO and general director of Gruppo Iren, acknowledged in recent statements the fundamental challenge: Turin's electrical network is old and stretched thin. The system spans roughly 5,000 kilometers of infrastructure containing more than 6,000 aging cable joints that struggle to dissipate heat when consumption surges.
During the late-May and mid-June 2025 heat waves, the widespread use of air conditioning units created unprecedented demand precisely when underground cables and junction points were already overheating due to elevated soil temperatures. This double pressure triggered cascading failures across multiple districts, from the historic center to outlying residential zones.
Iren invested €100M in Turin's electrical grid in 2025 alone—a €30M increase over the prior year. Roughly €50M went toward network renewal, replacing obsolete components, while the remaining €50M funded capacity expansion to accommodate rising electricity consumption.
Despite this substantial outlay, Bufo cautioned that relief will not arrive quickly. He warned residents that blackout risks will persist through the coming summer seasons as the modernization work continues, underscoring the scale of the transformation challenge.
Five-Year Transformation Plan
Iren has accelerated a comprehensive overhaul of Turin's electrical infrastructure, committing more than €500M through 2030. The plan envisions approximately 900 construction sites operating across the city in 2026, focusing on three pillars: modernization, maintenance, and capacity enhancement.
Key projects already underway include the new "Stazione Nord" facility, a pivotal distribution hub designed to alleviate summer overload in northern neighborhoods. In the southern zone, work continues on the Corso Bramante substation, scheduled for completion in 2027.
The utility plans to fully replace five major cable runs, renovate 35 secondary substations, and construct ten new crossover connections. €44M in PNRR funds—Italy's portion of the European Recovery Plan—are financing a portion of these interventions, which must be completed by June 30, 2026, to comply with disbursement deadlines.
Additionally, Iren will build two new primary substations outside the PNRR framework, converting high-voltage transmission into medium-voltage distribution to strengthen the network's backbone and reduce bottlenecks during peak demand.
What This Means for Residents
For those living in Turin, the highest risk period remains June through August when temperatures exceed 35°C and air conditioning use peaks simultaneously with heat-stressed underground cables. Iren has committed to reducing outage frequency, duration, and geographic impact, but full grid stability remains years away.
Why This Matters:
• Compensation available: Under ARERA regulations (Italy's energy authority), customers affected by prolonged outages are entitled to automatic compensation, which Iren has pledged to honor.
• Faster restoration: The expanded technical team and generator fleet mean most neighborhoods now regain power within 45 minutes, limiting spoilage of perishable goods and minimizing disruption to home offices and small businesses.
• Transparency timeline: Unlike vague promises, Iren has publicly admitted blackout risks will persist through at least the end of 2026, allowing residents to plan backup power solutions or alternative cooling strategies.
• PNRR deadline pressure: The June 2026 completion target for EU-funded projects means construction activity will intensify across the city, potentially causing localized service interruptions but accelerating long-term grid reliability.
Turin's mayor, Stefano Lo Russo, has labeled the situation an emergency, while opposition parties have criticized the pace of infrastructure renewal. Iren's first-quarter 2026 financial results showed €418M in EBITDA and €128.6M in net profit, with a 3% rise in capital expenditure focused on integrated water services, electrical grids, and waste collection.
Broader Context: Italy's Grid Modernization Challenge
Turin's blackout crisis mirrors challenges across Italian cities, where aging electrical infrastructure collides with climate-driven demand spikes and the integration of intermittent renewable energy sources. E-Distribuzione, the distribution arm of Enel Group and Italy's largest grid operator, has embedded advanced automation into its smart grid systems nationwide, enabling fault isolation in seconds and minimizing customer impact.
Enel's 2026–2028 strategic plan allocates over €26B to grid investments globally, with 55% earmarked for Italy, prioritizing digitalization, renewable integration, and climate resilience.
Iren, operating in Emilia-Romagna, Liguria, and Piedmont, takes a more localized approach, participating in European research initiatives like Horizon Europe FLEXCHESS and 5GSOLUTIONS to test virtual energy storage systems and demand-response technologies. Turin serves as a pilot city for these innovations, which aim to balance renewable energy fluctuations and optimize grid flexibility.
Both utilities are converging on smart grid architecture, automated monitoring, and energy storage solutions as essential tools for managing Italy's energy transition. The difference lies in scale: Enel operates across most of the national territory with centralized digital command centers, while Iren focuses on intensive local interventions and experimental integration of cutting-edge demand-management tools in specific urban contexts.
The Road Ahead
The next 12 months will test Turin's electrical system as never before. With 900 active construction sites, the city faces a paradox: temporary disruptions caused by upgrades even as the long-term goal is uninterrupted service. The utility's expanded 100-person emergency squad and 30-generator fleet represent a tactical buffer, buying time while deeper structural work progresses.
For residents, the message from Iren is clear: endurance required, improvement underway. The €500M investment through 2030 represents the single largest grid modernization effort in Turin's recent history, but the payoff—a resilient, digitally managed network capable of handling both extreme weather and the electrification of transport and heating—remains several construction seasons away.
In the meantime, summer 2026 will serve as a critical test. If the heat wave returns with intensity comparable to June 2025, when 45 outages occurred in just three days, Turin will learn whether last year's costly lessons have translated into tangible resilience—or whether the city's grid requires even more drastic intervention to meet 21st-century demands.
