The challenge
The community wanted solar for all residents and EV charging for a growing number of vehicles, but the building's supply had no headroom and residents needed individual billing.
Residential community · Valencia, Spain · 2025
84 apartments, one shared energy system
Collective self-consumption across 84 dwellings with allocated generation, communal storage and 62 EV-ready parking bays.
Engineering design
180 kWp rooftop array under Spain's collective self-consumption framework, with per-dwelling allocation coefficients. 120 kWh of communal storage for the common services, and 62 charging points on a dynamically balanced network capped at the existing supply capacity.
Installation
Fourteen weeks, executed in three phases with no interruption to residents. Existing risers reused where verified; new sub-metering installed for every bay.
“AIRVOLT handled the engineering, the regulation and eighty-four separate owners. That last part was the hard one.”
Measured results
34 %
average bill reduction per home
€0
grid connection upgrade cost
228 MWh
generated annually
71 t
CO₂ avoided per year
Production versus consumption
Monthly kWh, first full operating year.
Let's engineer your energy system.
Send us a year of electricity bills and a photo of your roof. We return a full engineering proposal with modelled production, savings and payback.