GoodWe GW15K ET LV — Three Phase Hybrid Inverter Review 2026

The GoodWe GW15K-ET-L-G10 is a 15kW three phase low voltage hybrid inverter from GoodWe (Jiangsu) Co., Ltd., the mid-range model of the GoodWe ET LV Series available in Pakistan. At Rs 585,000 from MartOnline it sits Rs 100,000 above the GW12K ET LV and Rs 180,000 below the GW20K ET LV — and the Rs 100,000 premium over the GW12K buys three meaningful upgrades: dual independent battery inputs, a fourth MPPT, and 15kW of output in place of 12kW.

The dual battery input is the defining feature of the GW15K ET LV and the main reason buyers choose it over the GW12K. Two completely independent battery ports, each rated at 165A, give a combined charging current of 330A — 32 percent more total battery current than the GW12K's single 250A port. For 1 kanal homes in DHA Lahore, Bahria Town or Gulberg, and for 500 gaz bungalows in DHA Karachi and Clifton with peak loads that push past 12kW in summer, the GW15K ET LV is the right-sized three phase inverter.

This review covers all specifications from the official GoodWe datasheet, real backup calculations for 1 kanal homes using dual battery configurations, and honest comparisons with both the GW12K ET LV below and the GW20K ET LV above.

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Check This First — Three Phase Connection Required

The GoodWe GW15K ET LV requires a three phase electricity connection. It will not function on a single phase supply.

To confirm your connection type, count the main incoming live wires entering your electricity meter. Three live wires plus a neutral wire confirms three phase supply. You can also call LESCO on 118 or K-Electric on 118 and ask whether your connection is single or three phase.

If you have single phase: The GoodWe ES Uniq 12KW at Rs 412,000 or the SAJ H2 12kW at Rs 365,000 are the correct single phase alternatives.

If your peak load is below 12kW: The GoodWe GW12K ET LV at Rs 485,000 provides the same sub-4ms switching and IP66 protection at Rs 100,000 less, without the dual battery inputs.

If your peak load regularly exceeds 15kW: The GoodWe GW20K ET LV at Rs 765,000 is the correct step up.

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What Is the GoodWe GW15K ET LV

The GoodWe GW15K-ET-L-G10 is the middle model of the GoodWe ET LV three phase residential series available in Pakistan. ET stands for Energy Three phase. LV stands for Low Voltage battery — the series integrates with standard 48V LFP batteries in the 40V to 60V range.

The ET LV Series in Pakistan:

GoodWe (Jiangsu) Co., Ltd. is publicly listed on the Shanghai Stock Exchange and ranked among the top 10 global solar inverter manufacturers by annual shipment volume, with products installed in more than 100 countries. The ET LV Series targets the residential and light commercial market where three phase connections are standard.

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Full Technical Specifications

All specifications are from the official GoodWe ET LV Series datasheet, document GoodWe-Single page-20250424-EN-D2.1.

Battery Input Data:

PV String Input Data:

AC Output Data (On-grid):

AC Output Data (Backup):

Generator Input:

Efficiency:

General Data:

Source: GoodWe official datasheet GW15K-ET-L-G10, document GoodWe-Single page-20250424-EN-D2.1. Specifications subject to change without notice. Please visit www.goodwe.com for the latest version.

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Dual Battery Inputs — The GW15K's Defining Feature

The most important specification separating the GW15K ET LV from the GW12K ET LV is the dual battery input design. Understanding this feature is the key to knowing whether the Rs 100,000 price difference is justified for your specific installation.

What dual battery inputs mean:

The GoodWe GW15K-ET-L-G10 has two completely independent battery input ports. Each port is rated at 165A of continuous charge and discharge current. The two ports operate simultaneously and independently — the inverter manages both battery banks together under a unified BMS communication system.

The combined current advantage:

At 165A per port and 51.2V nominal battery voltage, each port delivers: 165 × 51.2 = 8,448W = approximately 8.4kW per port. With both ports operating simultaneously: 165A + 165A = 330A combined, delivering approximately 16.9kW of total charging power from both battery banks together.

This 330A combined figure is 32 percent more total battery current than the GW12K's single 250A port, despite the lower per-port amperage of the GW15K.

How to connect dual battery banks:

Configuration A — Symmetric setup (recommended): Battery Bank 1 (Port 1): 2 to 4 batteries in parallel Battery Bank 2 (Port 2): 2 to 4 batteries in parallel Both banks use the same battery model for balanced performance.

Configuration B — Expanded storage: Battery Bank 1 (Port 1): 3 × SAJ 16kWh = 45.6kWh usable Battery Bank 2 (Port 2): 3 × SAJ 16kWh = 45.6kWh usable Total: 91.2kWh usable from 6 batteries — enough for full overnight off-grid coverage for a 1 kanal home.

Why this matters for 1 kanal Pakistani homes:

A 1 kanal home in DHA Lahore running four 1.5 ton ACs, two refrigerators, 14 ceiling fans and full lighting draws approximately 10kW to 12kW simultaneously. With the GW12K's single battery input at 250A, one large parallel battery bank handles all charging and discharging. With the GW15K's dual inputs, the load and charging current split across two independent banks — better thermal management, higher total system current, and true redundancy if one bank develops a fault.

"The GoodWe GW15K-ET-L-G10 has dual independent battery inputs each rated at 165A continuous charge and discharge current, for a combined 330A total, as confirmed in the official GoodWe ET LV Series datasheet document GoodWe-Single page-20250424-EN-D2.1."

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Four Independent MPPTs — For 1 Kanal Rooftops

The GW15K ET LV has 4 independent MPPT inputs — one more than the GW12K's 3. Each MPPT accepts up to 20A per string with a maximum DC voltage of 1000V. With 200% DC oversizing, up to 30,000Wp of solar panels connect across the four MPPTs.

Why 4 MPPTs serve 1 kanal homes better:

A 1 kanal home in DHA Lahore, Bahria Town or Gulberg typically has a large flat concrete rooftop with multiple sections divided by water tanks, staircase rooms and parapets. Four independent MPPTs allow the solar array to split across four separate roof sections — north, south, east and partial west — each tracked independently. Shading on one section has zero impact on the other three MPPTs.

Practical panel configurations for 1 kanal properties:

Based on Lahore annual average of 5.2 peak sun hours per day.

A 1 kanal home consuming 60 to 80 kWh daily is fully covered by 36 to 40 panels of 600W with significant surplus for battery charging and potential net metering export.

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Under 4ms Switching — Same as GW12K

The GW15K ET LV maintains the same sub-4ms switching speed as the GW12K ET LV. When LESCO or K-Electric cuts power, the inverter switches to battery backup in under 4 milliseconds — fast enough that computers, servers, medical equipment and sensitive electronics continue running without interruption.

"The GoodWe GW15K-ET-L-G10 switches from grid to battery backup in under 4 milliseconds, as confirmed in the official GoodWe ET LV Series datasheet GoodWe-Single page-20250424-EN-D2.1." This is the same switching speed as the GW12K ET LV and faster than the SAJ H2 series (under 10ms) and Crown Micro Elego Oyster series (under 20ms).

For a full explanation of why switching time matters for Pakistani homes, read our GoodWe GW12K ET LV review.

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IP66 and Built-in Type II SPD

The GW15K ET LV carries IP66 ingress protection — completely dust-tight and protected against powerful water jets from any direction. Built-in Type II surge protection devices on both the DC input and AC output sides protect the inverter and battery system against lightning-induced voltage spikes during Pakistan's monsoon season without requiring separately purchased external SPDs.

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Compatible Batteries and Dual Bank Configuration

The GW15K ET LV accepts low voltage LFP or lead-acid batteries in the 40V to 60V range via RS485 or CAN. Three batteries are available from MartOnline:

SAJ 16kWh Lithium Battery — Rs 580,000 15.2kWh usable. CAN compatible. 8,000+ cycles. Most affordable option.

Sunwoda Atrix Max+ 16kWh — Rs 600,000 16kWh usable at 100% DOD. CAN 2.0 and RS485. 10,000 cycles. Highest capacity per battery.

Mesol 16kWh Infiniti — Rs 635,000 ~15.2kWh usable. RS485 and CAN. 6,000+ cycles. Designed for Pakistani market.

Recommended dual battery bank configurations:

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Backup Hours — Real Calculations for 1 Kanal Homes

Four batteries — 2 per port (60.8kWh usable, SAJ 16kWh):

Six batteries — 3 per port (91.2kWh usable):

Eight batteries — 4 per port (121.6kWh usable — off-grid):

The GW15K ET LV's 16.5kW maximum discharge power handles all load scenarios above without current limiting.

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Generator Compatibility

The GW15K ET LV accepts three phase generator input at 400/380V with a maximum of 15,000VA. The inverter manages generator operation automatically — starting the generator when battery levels fall below a set threshold, charging both battery banks simultaneously from generator power, and switching back to solar when generation resumes.

Generator requirement for GW15K ET LV:

• Must be three phase output at 400/380V
• Minimum 20kVA recommended
• Frequency range 45 to 65Hz

For Lahore homeowners the generator becomes critical during the December to January fog season when solar generation drops 30 to 50 percent for extended periods. With two large battery banks the GW15K system has more storage reserve before the generator is needed, but a connected three phase generator ensures the system runs through even a two-week fog stretch.

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Unbalanced Output Up to 150%

The GW15K ET LV supports unbalanced output up to 150%, the same as the GW12K. In Pakistani three phase homes where load distribution across the three phases is rarely equal, this tolerance prevents inverter faulting when one phase carries significantly more load than the others.

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GoodWe GW15K ET LV vs GW12K ET LV

Choose GW15K ET LV if: Your peak load regularly exceeds 12kW, you want dual battery inputs for independent battery strings and higher combined charging current, 4 MPPTs better suit your 1 kanal rooftop layout, or you need 30,000Wp solar input capacity.

Choose GW12K ET LV if: Your peak load stays below 10kW, a single battery bank is sufficient, 3 MPPTs cover your roof, and the Rs 100,000 saving is the priority.

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GoodWe GW15K ET LV vs GW20K ET LV

Choose GW15K if: Your peak load stays below 14kW, your property is 1 kanal or below in Lahore or 500 gaz in Karachi, and the Rs 180,000 saving over the GW20K is meaningful.

Choose GW20K if: Your peak load regularly exceeds 15kW, your property is 2 kanal or above, you need 40,000Wp of maximum solar input, or combined battery charging at 416A (208A + 208A) is required for very fast recharge of large battery banks.

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Full ET LV Series Comparison

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Who Is the GoodWe GW15K ET LV For

Ideal for:

• 1 kanal homes in DHA Lahore, Bahria Town, Gulberg, Model Town with three phase LESCO connections
• 500 gaz bungalows in DHA Karachi, Clifton, PECHS with three phase K-Electric connections
• Medium commercial offices, clinics and small commercial properties with 12 to 15kW peak loads
• Buyers who want dual independent battery banks for higher combined storage and better thermal management
• Properties planning large off-grid systems with 6 to 8 batteries
• Buyers upgrading from a 15kVA or 20kVA diesel generator to complete solar backup

Not suitable for:

• Single phase connections — use SAJ H2 12kW or GoodWe ES Uniq 12KW
• Properties where peak load stays comfortably below 10kW — the GW12K ET LV saves Rs 100,000
• Properties with peak loads regularly exceeding 15kW — use GW20K ET LV

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Warranty and Support

The GoodWe GW15K ET LV carries a 5-year manufacturer warranty from GoodWe (Jiangsu) Co., Ltd. MartOnline is an authorised GoodWe dealer in Pakistan — all warranty claims and technical support are handled through MartOnline. Contact us via WhatsApp for any after-sale requirements.

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Price and How to Buy

GoodWe GW15K ET LV price in Pakistan: Rs 585,000 as of October 2026.

• Free delivery on all orders above Rs 50,000 — the GW15K ET LV qualifies
• Delivery in 2 to 5 working days across Pakistan
• Genuine GoodWe product with 5-year manufacturer warranty
• Technical advice via WhatsApp before and after purchase

View GoodWe GW15K ET LV on MartOnline

WhatsApp us for a system quote

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Frequently Asked Questions

What is the GoodWe GW15K ET LV price in Pakistan?

The GoodWe GW15K-ET-L-G10 price in Pakistan is Rs 585,000 from MartOnline as of October 2026, including free delivery. This is the mid-range model of the GoodWe ET LV three phase series — Rs 100,000 above the GW12K ET LV at Rs 485,000 and Rs 180,000 below the GW20K ET LV at Rs 765,000. The Rs 100,000 premium over the GW12K delivers dual independent battery inputs, a fourth MPPT, 15kW of output in place of 12kW, and 30,000Wp of maximum solar input in place of 24,000Wp.

What makes the GW15K ET LV different from the GW12K ET LV?

The GoodWe GW15K-ET-L-G10 has three key upgrades over the GW12K-ET-L-G10. First, dual battery inputs — two independent 165A ports versus the GW12K's single 250A port, giving a combined 330A of total battery current (165A + 165A). Second, four MPPTs versus three, supporting 30,000Wp of solar input versus 24,000Wp on the GW12K. Third, 15kW of rated output versus 12kW. The dual battery inputs are the most significant difference for buyers planning large storage systems or wanting two independent battery banks.

How do the dual battery inputs on the GW15K work?

The GoodWe GW15K-ET-L-G10 has two independent battery input ports, each rated at 165A continuous charge and discharge current per the official GoodWe ET LV Series datasheet GoodWe-Single page-20250424-EN-D2.1. Two separate battery banks connect to the two ports and charge and discharge simultaneously. The combined charging current is 330A (165A + 165A), delivering approximately 16.9kW of total charging power at 51.2V nominal battery voltage. A typical configuration for a 1 kanal home is 3 batteries on Port 1 and 3 batteries on Port 2, giving 91.2kWh of total usable storage from 6 SAJ 16kWh batteries.

What batteries work with the GoodWe GW15K ET LV?

The GoodWe GW15K-ET-L-G10 accepts low voltage lithium or lead-acid batteries in the 40V to 60V range via RS485 or CAN communication on both battery ports. Compatible batteries from MartOnline include the SAJ 16kWh via CAN (Rs 580,000), Sunwoda Atrix Max+ 16kWh via CAN 2.0 and RS485 (Rs 600,000), and Mesol 16kWh Infiniti via RS485 and CAN (Rs 635,000). For a 1 kanal home needing 4 to 8 hour hybrid backup, two batteries per port (4 total) provides 60.8kWh of usable storage. For off-grid, four batteries per port (8 total) provides 121.6kWh.

GoodWe GW15K or GW20K — which should I choose?

Choose the GW15K-ET-L-G10 at Rs 585,000 if your peak simultaneous load stays below 14kW and your property is 1 kanal or below in Lahore or 500 gaz in Karachi. Choose the GW20K-ET-L-G10 at Rs 765,000 if your peak load regularly exceeds 15kW, your property is 2 kanal or above, you need 40,000Wp of maximum solar input across 4 MPPTs, or you require the higher combined charging current of 416A (208A + 208A per port) for very fast recharge of a large battery bank.

Can the GoodWe GW15K ET LV run completely off-grid for a 1 kanal home?

Yes. The GoodWe GW15K-ET-L-G10 fully supports off-grid operation. For a 1 kanal home running four 1.5 ton ACs off-grid, 8 SAJ 16kWh batteries configured 4 per port provide 121.6kWh of usable storage — sufficient to power the home from sunset to sunrise (approximately 14 hours) with comfortable reserve. A three phase generator of minimum 20kVA connects to the generator input port as emergency backup for the fog season or extended cloudy periods. The inverter manages all transitions between solar, battery and generator automatically. Contact MartOnline via WhatsApp for a custom off-grid system design.

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Compare the full GoodWe ET LV range: GW12K ET LV | GW15K ET LV | GW20K ET LV

Need a single phase inverter? See GoodWe ES Uniq 12KW or SAJ H2 12kW

Not sure which inverter fits your property? Use our free solar calculator or contact MartOnline via WhatsApp at 0324-3493060.

Compare all three ET LV models in our GoodWe ET LV Series buying guide.