Deye SUN-36K-G04 36 kW Three-Phase 2-MPPT String Inverter

The Deye SUN-36K-G04 is a three-phase grid-tied string inverter rated 36 kW. Its two MPP trackers each take three strings, accept up to 54 kW of PV at a 1100 V ceiling, and reach 98.6% maximum efficiency. It is aimed at commercial rooftops, warehouses, farms and schools where several mid-size inverters are preferred to one very large central unit.

A mid-size block for commercial roofs

Thirty-six kilowatts is a convenient unit: it fits a typical warehouse array, and several can share a roof to match a bigger connection. Three strings on each tracker let you group modules by roof section, which limits mismatch where parapets or plant equipment cast shade. The enclosure is 28.7 kg and fan-cooled, and the datasheet allows installation up to 4000 m.

Features on the datasheet

• Two trackers, efficiency up to 98.6%.
• Zero export and VSG applications.
• Optional string monitoring and PID prevention.
• Optional arc-fault interrupter.
• Wide grid-voltage tolerance.

Technical specification

Four ratings share the 2026 datasheet. The first table compares the 33, 35 and 36 kW columns.

Ratings compared

Remaining datasheet entries

Why the 36K rather than the 30K

All four ratings share one enclosure, so the 36K yields the most power per roof connection and per bracket. The price is current: 60 A maximum per phase needs thicker cable and a larger breaker than the 30 kW unit. If the utility caps export between two ratings, pick the lower rating and keep the PV size. Because the trackers regulate independently, put modules of the same orientation on one tracker so shade on one group does not drag the other down.

Mounting guidance from the manual

The manual asks for a wall or strong frame that can carry the unit, an almost upright position with a small allowed tilt, and a minimum gap between neighbouring inverters drawn on a diagram. An airtight room must be ventilated, the unit must stay out of children’s reach, and nothing should be stored beside it. Start with the AC breaker, then the PV breaker, then the inverter switch; stop in reverse. Never share one breaker between inverters. Cable and breaker rows are listed per rating, so use the row for 36 kW.

Commercial roofs in hot climates

Flat roofs get hot, and the inverter derates above 45 degrees C ambient. Place units on a shaded side wall or under a canopy, leave the fan path free and plan cleaning where dust is heavy. Mixed roof orientations can use the two trackers independently.

Practical notes

The ratio of 54 kW of PV to 36 kW of AC is 1.5. Each tracker handles three strings at 40 A, so match string lengths within a tracker. At 28.7 kg the cabinet is lighter than its rating suggests, and the 330 x 572 x 206 mm body is slim enough for a plant wall. The datasheet gives noise to 60 dB(A), so avoid walls shared with offices.

Selection and installation notes

A grid-tied string inverter is selected from the array size, the string voltage window and the grid connection. Check the string open-circuit voltage at the lowest site temperature against the input limit and the operating voltage at high temperature against the MPPT window, balance the strings on each tracker, fit DC isolators and surge protection and keep the clearances on the data sheet. In hot sites allow for output derating, shade the unit and have the grid settings approved by the utility before connection.

Information needed for a quotation

Send the full model code, the quantity, the delivery location in Oman or the GCC, the intended use and any accessories needed, so that the complete package can be quoted together.

Documents and supply information

The manufacturer data sheet is attached to this page and should be read together with the project specification and the site risk assessment before a purchase is confirmed. Ratings, standards and dimensions are quoted as printed on that sheet. Lead time, stock position and certificates available with the shipment are confirmed in the quotation, and we supply to Oman and the wider GCC region for industrial, utility and building services projects.

Frequently asked questions

How many strings can SUN-36K-G04 take?

Two MPP trackers with three strings each, so six strings, at 40 A operating current per tracker.

How much PV can it take?

Up to 54 kW at a maximum input voltage of 1100 V.

What efficiency does it reach?

98.6% maximum and 98.1% Euro efficiency.

What is the grid connection?

Four-wire three-phase, 380 or 400 V line-to-line, at 50 or 60 Hz.

Which document is attached?

Deye’s user manual for the 30 to 36 kW G04 line, as a PDF.

Documents and quotation

To buy the Deye SUN-36K-G04 through Seven Star LLC, send an enquiry that states the exact code and quantity. We act as an independent supplier in Muscat and reply with delivery time and terms. Deye’s manual for the 30 to 36 kW G04 line is attached as a PDF, and the 2026 datasheet is on the Deye product page. Read the maker documents first if you need to verify a figure. Related items: Solar Power.