In 2024, Feralco Italia completed the replacement and remediation of old asbestos roofing across several warehouse buildings at its Millesimo industrial site, with the primary objective of protecting the environment and ensuring workplace safety. Building on this intervention, and as part of its broader sustainability and energy-efficiency strategy, a photovoltaic (PV) system was installed at the site in 2025.

The PV system has a total installed capacity of 201.63 kWp and consists of 429 monocrystalline photovoltaic modules installed on the roofs of several industrial buildings. Energy conversion is managed by five inverters with a combined rated power of 185 kW, ensuring high operational efficiency, reliability, and continuity.  

Electricity production and consumption 

Annual electricity production from the PV system is estimated at approximately 250 MWh. Based on current estimates, around 69% of this production (approximately 172.5 MWh per year) is expected to be selfconsumed on site, with the remaining electricity exported to the grid. 

The selfconsumed electricity is expected to cover approximately 56% of the site’s daytime electricity demand. This implies an estimated daytime electricity consumption of approximately 309 MWh per year, calculated as follows: 

For context, the Millesimo site’s total annual electricity consumption in 2025 amounted to 625.3 MWh. On this basis, daytime electricity consumption represents roughly half of the site’s total annual electricity use, with the remaining consumption occurring outside daytime hours. 

Environmental benefits 

The primary environmental benefit of the PV installation is the reduction of locationbased Scope 2 emissions associated with purchased electricity at the Millesimo site. Under the GHG Protocol, the locationbased method reflects the average emissions intensity of the electricity grid where the site operates and therefore captures the actual, physical decarbonisation effect of onsite solar generation. 

In 2025, the Millesimo site consumed 625.3 MWh of electricity, corresponding to 171 tCO₂e of locationbased Scope 2 emissions. With an estimated 172.5 MWh of selfconsumed solar electricity replacing gridsupplied electricity in 2026, the PV system avoids approximately 46.9 tCO₂e of locationbased Scope 2 emissions annually. 

Expressed relative to the site’s total electricityrelated emissions, the PV installation is therefore estimated to reduce the scope 2 location bases CO₂e emissions associated with purchased electricity by approximately 25–30% per year, depending on consumption patterns and emission factors applied. 

In addition, surplus renewable electricity will be exported to the grid and contribute to avoided emissions at system level. Depending on the emission factors used, the total avoided emissions from both selfconsumption and export are estimated at approximately 54–80 tonnes of CO₂e per year, reflecting differences in national methodologies and grid assumptions. 

Overall, the PV installation represents a concrete, measurable, and transparent reduction in the Millesimo site’s operational carbon footprint and supports Feralco Italia’s broader objectives to reduce greenhouse gas emissions and strengthen resilience to energymarket volatility. 

We thank Albasolar (https://www.albasolar.it/it/), a company specialising in photovoltaic systems and integrated energy solutions for industrial and commercial applications, for their support in the design and implementation of this technology at the Feralco Millesimo plant.