Outdoor Medium Voltage Substation
Outdoor medium-voltage photovoltaic substations are necessary in cases where a consumer’s power requirements (mainly in urban areas) exceed 100 kVA. In such a scenario, the investor must construct their own substation for connection to the electricity distribution operator (DEDDIE) at medium voltage level.
NanoDomi can supply you with prefabricated substations (MV/LV substations) for any capacity (400 kVA – 2500 kVA), as well as the low-voltage (LV) panel according to your specific requirements.
Electrical equipment for an outdoor Medium Voltage kiosk/substation:
- Low-voltage switchgear panel.
- Medium Voltage Switchboard (includes PPC incoming/outgoing feeder, metering compartment, and transformer protection (interconnection) compartment)
- Oil-immersed Transformer
For more and detailed information regarding the equipment, please click HERE.
General description of an outdoor Medium Voltage kiosk/substation:
- Specially designed structure for housing electrical equipment, including a transformer, a medium-voltage switchgear, and low-voltage switchgear panels.
- The roof construction ensures the complete waterproofing of the kiosk/substation building.
- Installation on an existing concrete base using anchors (dowels).
- The kiosk features a steel frame that is properly dimensioned to safely withstand all loads during transportation.
- Perimeter cladding with polyurethane panel walls and a roof made of trapezoidal polyurethane panels, for maximum thermal insulation.
- Transport of the outdoor kiosk/substation by suspension from fixed lifting points, which carry all loads.
- The substation is suitable for outdoor installation on a reinforced concrete base with appropriate infrastructure for cable entry and exit.
- Special electrostatic coating with baked epoxy powder paint.
- The construction will be delivered complete and ready to receive the incoming and outgoing power cables.
Dimensions of the outdoor Medium Voltage kiosk/substation:
The kiosk has overall dimensions of 5.00 x 2.5 x 2.6 (L x W x H) and includes three independent equipment rooms.
- A low-voltage (LV) room.
- A medium-voltage (MV) room.
- A transformer (T/R) room.
Why choose our proposal?
At NanoDomi, thanks to our extensive experience and knowledge of the specific requirements of photovoltaic plant construction, we include in our standard substation solution:
- Complete standalone Click2Save 3 kVA inverter with integrated photovoltaic controller and external AC generator input, instead of a 1 kVA UPS (used by competitors).
- Sunlight 115Ah batteries for increased load autonomy in case of a power outage, for the monitoring and security system of the photovoltaic park.
- Additionally, at low cost, we include and pre-install photovoltaic panels on the industrial roof of the substation so that from the FIRST day and BEFORE connection to the electricity distribution operator (DEDDIE), the photovoltaic park can operate cameras and alarms.

