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SunWell Energy

22kW 64kWh Large Commercial Parallel Solar System

22kW 64kWh Large Commercial Parallel Solar System

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The 64.30kWh Large Commercial Parallel Solar System uses the same 22 kW parallel inverter pair and 19.84 kWp array as the Medium Commercial system, but with a 64.30 kWh shared LiFePO4 bank for about 57% more storage. It fits large commercial sites, cold storage and workshops with longer autonomy or high overnight draw.

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Key Specifications

ParameterValue
System type Commercial hybrid, single-phase parallel 230 V
PV array 19.84 kWp (32 x 620 W)
Inverter 22 kW total (2 x M11000T-48PL in parallel)
Battery 64.30 kWh LiFePO4 (2 x 51.2 V 628 Ah)
Daily output 99.2 kWh/day (at 5 peak sun hours)
Annual output 36,208 kWh/year
Best for Large supermarkets, restaurant chains, hotellobbies

Main Advantages

  • 22 kW from two standard units, so spares and service stay common across your sites.
  • Parallel platform scales to six units, meaning further growth needs no equipment change.
  • Two independent dual-MPPT inverters give four MPPT inputs across the roof.
  • 64.30 kWh of storage covers long outages for refrigeration and air conditioning.
  • RS485 BMS communication keeps charging inside battery limits across the shared bank.
  • LCD program 02 set to PAL makes single-phase parallel commissioning straightforward.

Applications

  • Supermarkets and hypermarkets of 400 to 600 square metres
  • Restaurant chains with 40 to 80 covers
  • Hotel lobbies and common areas
  • Fitness centres and sports clubs
  • Cold rooms and aggregated refrigeration sites

System Configuration

CategoryProduct modelQtySubtotal
Solar panel 620 W monocrystalline 32 pcs 19.84 kWp
Hybrid inverter M11000T-48PL 2 pcs 22.0 kW, 48 V (parallel)
Parallel communication kit Original RJ45 kit 1 set Supplied with parallel kit
Lithium battery S-51.2/628-A 2 pcs 64.30 kWh (shared bank)

SystemTopology

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Load Capacity

LoadPowerDaily running timekWh/day
Commercial fridge (200 W x 8) 1,600 W 24 h x 0.5 duty 19.20 kWh
Chest freezer (350 W x 2) 700 W 24 h x 0.5 duty 8.40 kWh
2 HP air conditioners 1,800 W x 3 5,400 W 10 h 54.00 kWh
LED commercial lighting (25 W x 30) 750 W 12 h 9.00 kWh
Bakery oven (3,000 W) 3,000 W 4 h 12.00 kWh
POS / network / monitoring 50 W 12 h 0.60 kWh
Total 102.6 kWh/day; larger battery extends autonomyby ~57%

Annual Savings and Payback

MetricValue
Annual generation 36,208 kWh/year
Tariff applied USD 0.25/kWh (representative off-grid tariff,illustrative)
Annual electricity bill offset USD 9,052 per year

Maximumsystem investment for each payback target

Target paybackMaximum system investment
2 years USD 18,104
3 years USD 27,156
4 years USD 36,208
6 years USD 54,312
8 years USD 72,416

Figures assume the full annual generation is consumed or exported at the tariff shown, with no system losses applied, and exclude financing, insurance, maintenance and tariff changes over time.

Installation and Maintenance

Install panels on a roof or ground frame with the correct tilt and orientation. Mount inverters on a non-combustible wall with clearance for airflow. For parallel systems, all units must share one battery bank and all battery cables must be identical in length. Place batteries in a dry, ventilated room. Connect battery first, then PV, then AC, then commission each unit in turn.

  • Keep panels clean, especially in dusty or dry-season conditions.
  • Check terminal torque periodically and keep the battery room dry and ventilated.
  • Contact us for warranty terms applicable to your market and order quantity.

We provide a 10-year product warranty on the solar panels (30-year linear power performance), a 5-year warranty on the LiFePO4 battery, and a 2-year warranty on the hybrid inverter. If you experience any quality issues within the applicable warranty period, please contact us and we will arrange a replacement or repair promptly.

Frequently Asked Questions

How much does the 64.30kWh parallel system produce perday?

About 99.2 kWh per day (19.84 kWp x 5 peak sun hours).

How is it different from the 40.96kWh parallel system?

Same 22 kW inverter pair; the battery is 64.30 kWh instead of 40.96 kWh, giving ~57% more storage.

How long is the backup time?

57.87 kWh usable supports typical commercial loads for about 13.5 hours.

Is this suitable for a small business, clinic orworkshop?

Yes. The 22 kW output and 57.87 kWh usable cover clinics, small factories, shops and workshops with fridges, machines and lighting through long outages.

Can it be expanded further?

Yes. Add more S-51.2/628-A battery modules or additional parallel inverter units as demand grows.