About the Inverter Space & Clearance

Inverter space planning determines the floor area, wall space, or outdoor pad area required to install solar inverters — ensuring adequate room for the inverter body, cable entry/exit, ventilation airflow, maintenance access, and required electrical clearances.

How to calculate it

1. 1Obtain inverter dimensions (W × H × D) and weight from the datasheet.
2. 2Add clearances: per manufacturer recommendation — typically 300–500 mm sides, 300 mm top (for heat exhaust), 600 mm front (service access).
3. 3For wall-mounted string inverters: ensure the wall can carry the weight (most inverters 15–40 kg); use proper anchor bolts into masonry.
4. 4For floor-standing central inverters: concrete pad of ≥ 150 mm thickness rated for the equipment weight. Add anti-vibration mounts if near occupied spaces.
5. 5Inverter room ventilation: room must remove heat equal to inverter losses. Inverter losses ≈ rated power × (1 − efficiency) ≈ 1–2% of rated power. For 100 kW: ~1–2 kW of heat to exhaust.
6. 6Total room area rule of thumb: 0.5–1.5 m² per 100 kW of inverter capacity (for central inverters with walking clearance).

Worked example

Two 50 kW central inverters for a 100 kWp plant. Each inverter: 800 mm × 1,800 mm × 600 mm. Required floor footprint per unit with clearances: (800 + 600) mm wide × (600 + 600) mm deep = 1.4 m × 1.2 m = 1.68 m². Two inverters side-by-side plus aisle: room of 3.2 m × 2.5 m = 8 m² minimum. Ventilation: 2 kW heat load → one 600 × 600 mm exhaust fan + louvre inlet.

What you can calculate

• Front/side clearance
• Room length
• CEA 2010
• Thermal check

Frequently asked questions