Three-phase solar system prices, by size.
Thirty configurations from 5 kW to 500 kW, across a 380 V and a 220 V three-phase family, itemised so you can see what the money buys. Prices are shown as ranges because component costs move.
What does a three-phase solar system cost?
Across the thirty published three-phase configurations on this page, equipment runs from about $5,100–$5,640 for a 5 kW array with 19 kWh of storage to about $308,470–$340,940 for a 500 kW array with 1,125 kWh. In unit terms that is roughly $0.54 to $1.13 per watt of array, and the battery accounts for 37–50% of the total.
Every figure is equipment, FOB. Freight, customs duty, local installation, permits and grid connection fees sit outside them — see what is not included.
The 380 V family, 5 kW to 500 kW.
The standard three-phase family. Storage shown is nominal pack capacity, and “config A/B” marks two published builds at the same array rating with different inverter or storage counts.
| System | Daily energy | PV array | Storage | Equipment price | Per watt |
|---|---|---|---|---|---|
| 5 kW | 30 kWh | 5.0 kW | 19 kWh | $5,100–$5,640 | $1.02–$1.13 |
| 6 kW | 45.36 kWh | 7.6 kW | 21 kWh | $5,710–$6,310 | $0.75–$0.83 |
| 8 kW | 60.48 kWh | 10.1 kW | — | $6,430–$7,110 | $0.64–$0.70 |
| 10 kW | 75.6 kWh | 12.6 kW | 30 kWh | $7,820–$8,640 | $0.62–$0.69 |
| 12 kW | 75.6 kWh | 12.6 kW | 30 kWh | $8,150–$9,010 | $0.65–$0.71 |
| 15 kW | 113.4 kWh | 18.9 kW | 38 kWh | $11,420–$12,620 | $0.60–$0.67 |
| 20 kW | 151 kWh | 25.2 kW | 51 kWh | $14,360–$15,880 | $0.57–$0.63 |
| 25 kW | 151.2 kWh | 25.2 kW | 51 kWh | $15,000–$16,580 | $0.60–$0.66 |
| 30 kW | 211.6 kWh | 35.3 kW | 72 kWh | $19,840–$21,930 | $0.56–$0.62 |
| 35 kW | 264.6 kWh | 44.1 kW | 112 kWh | $25,570–$28,260 | $0.58–$0.64 |
| 40 kW | 264.6 kWh | 44.1 kW | 112 kWh | $25,850–$28,570 | $0.59–$0.65 |
| 50 kW | 283.5 kWh | 47.2 kW | 113 kWh | $28,840–$31,870 | $0.61–$0.68 |
| 60 kW | 340 kWh | 56.7 kW | 120 kWh | $30,680–$33,910 | $0.54–$0.60 |
| 80 kW | 453.6 kWh | 75.6 kW | 144 kWh | $45,350–$50,130 | $0.60–$0.66 |
| 100 kW | 567 kWh | 94.5 kW | 241 kWh | $63,480–$70,170 | $0.67–$0.74 |
| 120 kW | 737 kWh | 122.8 kW | 241 kWh | $73,340–$81,060 | $0.60–$0.66 |
| 150 kW | 907 kWh | 151.2 kW | 338 kWh | $90,280–$99,790 | $0.60–$0.66 |
| 200 kW | 1190.7 kWh | 198.4 kW | 450 kWh | $117,000–$129,320 | $0.59–$0.65 |
| 300 kW (config A) | 1814.4 kWh | 302.4 kW | 640 kWh | $164,790–$182,140 | $0.54–$0.60 |
| 300 kW (config B) | 1814.4 kWh | 302.4 kW | 640 kWh | $189,820–$209,800 | $0.63–$0.69 |
| 350 kW | 2097 kWh | 349.6 kW | 724 kWh | $220,230–$243,410 | $0.63–$0.70 |
| 400 kW | 2381 kWh | 396.9 kW | — | $246,130–$272,030 | $0.62–$0.69 |
| 500 kW | 3024 kWh | 504.0 kW | 1125 kWh | $308,470–$340,940 | $0.61–$0.68 |
Daily energy is the load the configuration is published against, not a limit. Prices are shown as ±5% ranges: module costs move with the cell market and the rest follows.
The 220 V family, 100 kW to 500 kW.
For markets that run 220 V three phase. At the same array rating this family sits higher per watt than the 380 V one, mainly because the inverter and the distribution equipment are specified differently.
| System | Daily energy | PV array | Storage | Equipment price | Per watt |
|---|---|---|---|---|---|
| 100 kW | 567 kWh | 94.5 kW | 241 kWh | $66,460–$73,450 | $0.70–$0.78 |
| 150 kW | 936 kWh | 151.2 kW | 338 kWh | $98,550–$108,930 | $0.65–$0.72 |
| 200 kW | 1190 kWh | 198.4 kW | 450 kWh | $128,530–$142,060 | $0.65–$0.72 |
| 300 kW | 1814 kWh | 302.4 kW | 640 kWh | $170,320–$188,250 | $0.56–$0.62 |
| 500 kW | 3024 kWh | 504.0 kW | 1125 kWh | $328,640–$363,240 | $0.65–$0.72 |
Compare the 500 kW row in each table: the 220 V build carries a premium per watt over the 380 V build at the same array size.
Three things the table tells you.
| Observation | Why it happens | What to do about it |
|---|---|---|
| Cost per watt falls about 47% between the smallest and the mid-range systems | Inverters, distribution equipment, mounting and cabling spread across more modules | Do not buy the smallest system that technically fits — but do not buy the largest either |
| Storage moves the price more than array size does | A lithium pack is the largest single line in every configuration on this page | Decide backup hours deliberately, against the loads that actually have to stay on |
| The module price does not move with volume | Modules are quoted per piece across the whole range | Do not expect a per-module discount to appear at scale; the saving is in the balance of system |
Turn a row into a proposal.
Send the load list, the site conditions and the destination port. We will confirm the configuration and return an itemised bill of materials on the same structure as these tables.
Request a proposal- What is inside the price — the itemised version
- How to calculate load and backup hours
- What to send for a quote
Frequently asked questions
Are these prices current?
They are the published figures for these configurations, shown as ±5% ranges because component costs move. Ask for the current sheet before you commit a budget.
Why are prices shown as ranges rather than exact numbers?
Because module, battery and inverter costs move between quote and order, and because the balance of system is priced against the site. A single number would imply a precision the quotation does not have.
What is the difference between the 380 V and 220 V families?
Output voltage, and with it the inverter and distribution specification. At the same array rating the 220 V family carries a premium per watt. Which one you need follows your grid, not your preference.
Does the price include installation?
No. We engineer and supply; installation and after-sales are carried out by your local EPC contractor or installer, with our engineering support behind them.
Can I buy a configuration between two rows?
Yes. The published rows are standard builds; most projects end up somewhere between them once the load profile is known. Send the load list and we will price the actual configuration.
What does “daily energy” mean in the table?
The daily consumption the configuration is published against. It is a sizing reference, not a limit — your own load curve decides the array and the storage.
Send the load, get the number.
A row in this table is a starting point. Send your bills, generator hours and critical loads and we will come back with the configuration that fits.
Request a proposal