Arca pellet boiler shown with PV panel, inverter and storage tank

Photo: Mariusz Młynarczyk / CloudAir.tech

Arca, sharing signage with Step boiler manufacturers, shows an orange pellet boiler with an auger feeder next to a photovoltaic panel, an Afore inverter, a battery module and an insulated storage tank. Boards above read "BIOVOLTAICO ARCA", "DETRAZIONI – CONTO TERMICO" and "LA CALDAIA BIOMASSA INTEGRATA AL FOTOVOLTAICO". Visitors walk the green-carpeted stand behind.