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200 kWp Industrial Rooftop Solar | EPC Engineering and Budget

Industrial rooftop PV 200 kWp, 200.32 kWp DC, 180 kW AC. English 77-line BOQ, indicative budget, not a firm quote.

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QUANGANHCONS | INDUSTRIAL EPC ENGINEERING

Industrial rooftop PV 200 kWp: equipment and EPC reference

A structured technical reference for factories evaluating rooftop PV, site electrical interfaces and EPC budgets.

QAC-SOL-EST-20261109-9369806C · QAC Solar 8.21.0

200.32 kWpPV DC nameplate
180 kWTotal inverter AC
313 modulesLONGi 640 Wp modules

1. Applications and self-consumption

Six 30 kW string inverters with separate AC feeder protection are the current reference approach; review roof zoning, cable length, and PCC headroom. The system is a grid-connected self-consumption PV reference, excluding battery storage; it is not evidence of a completed installation.

2. Equipment nameplate and electrical configuration

Capacity class 200 kWp
PV modules 313 × LONGi Solar LR7-72HVH-640M, 640 Wp
Installed DC power 200.32 kWp
Inverters 6 × Sungrow SG30CX-P2
Combined AC rating 180 kW
PV strings 18, subject to MPPT allocation checks
DC/AC ratio 1.11
Reference QAC-SOL-EST-20261109-9369806C · 09 Nov 2026

3. Engineering calculations

PDC = 313 × 640/1,000 = 200.32 kWp. DC/AC ratio = 200.32/180 = 1.11. PV output and clipping depend on inverter model, MPPT assignment, module temperature and irradiance.

At 400 V three phase and assumed power factor 0.99, aggregate AC current is 180 × 1,000/(√3 × 400 × 0.99) ≈ 262.43 A. This is a mathematical aggregate, not a one-feeder design. Calculate protective device ratings, cable ampacity, voltage drop and prospective fault level separately for each AC section and PCC.

4. Roof, protection and grid interface

Six 30 kW string inverters with separate AC feeder protection are the current reference approach; review roof zoning, cable length, and PCC headroom. The system is a grid-connected self-consumption PV reference, excluding battery storage; it is not evidence of a completed installation.

5. Programme and acceptance

Survey and SLD approval → material procurement → safe installation of mounting and PV DC/AC circuits → protection/earthing/insulation tests → commissioning and as-built documentation. Project duration, utility requirements and exclusions will be confirmed after survey.

Indicative WBS/Gantt (no fixed dates)

1. Demand monitoring and survey

2. Electrical/PCC and roof design

3. Purchasing and HSE

4. Rooftop installation/DC/AC wiring

5. Commissioning and handover

6. 200 kWp Solar estimate — view and download

Quote reference: QAC-SOL-EST-20261109-9369806C · QAC Solar 8.21.0 · Pre-survey reference

Before VAT: 2,403,840,000 đ · Illustrative VAT 10%: 240,384,000 đ · With VAT: 2,644,224,000 đ

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Preview matching source-locked PDF below. This is a preliminary budget; unit prices can be rounded and the actual utility/MV scope requires independent verification.

7. 12-month production and a representative 24-hour day

Example only, not surveyed production or measured load: PVGIS 5.3/ERA5 2023 HCMC (10.8231,106.6297), 10° south-facing, PVGIS loss 14% once, AC limits applied per configuration. Hypothetical factory operates Mon–Sat: 75% AC daytime load, 50% lunch, 35% evening, 18% overnight/Sundays; zero export assumed.

Monthly energy (kWh)Monthly energy (kWh) — Available PV, Direct PV self-use
Month Available PV Direct PV self-use
Month PV kWh Self-use kWh Curtailed kWh Load kWh
1 20,828 18,559 2,269 54,058
2 24,112 21,086 3,026 49,421
3 28,108 24,793 3,315 55,210
4 25,459 22,314 3,145 52,128
5 23,600 21,777 1,823 55,210
6 20,517 18,897 1,620 53,280
7 19,265 17,839 1,426 54,058
8 23,901 21,725 2,177 55,210
9 19,432 18,146 1,286 53,280
10 21,415 19,288 2,127 54,058
11 21,083 18,934 2,149 53,280
12 23,051 20,777 2,274 54,058

Representative day: 15 Mar 2023

Power over 24 hours (kW)Power over 24 hours (kW) — PV output, Assumed factory load, Direct PV self-use
Hour (UTC+7) PV output Assumed factory load Direct PV self-use
Show 24-hour loads and assumptions
Hour ICT PV kW Load kW Self-use kW
0 0 32.4 0
1 0 32.4 0
2 0 32.4 0
3 0 32.4 0
4 0 32.4 0
5 0 32.4 0
6 6.1 32.4 6.1
7 44.9 81 44.9
8 81.1 135 81.1
9 113.9 135 113.9
10 130.9 135 130.9
11 138.7 135 135
12 137.3 90 90
13 87.5 135 87.5
14 75.7 135 75.7
15 57.2 135 57.2
16 33.7 135 33.7
17 7.7 135 7.7
18 0 63 0
19 0 63 0
20 0 63 0
21 0 63 0
22 0 32.4 0
23 0 32.4 0

JRC PVGIS 5.3 ERA5 2023 · QAC-SOLAR-INDUSTRIAL-HCM-2023-R1

8. Rooftop PV installation and equipment images

Images already in the QAC content library; not photographs of this exact system.

Industrial PV reference image 1
Industrial PV reference image 2
Industrial PV reference image 3

9. Standards, checkpoints and FAQ

Review IEC 62548-1, IEC 60364-7-712 and applicable Vietnamese electrical/fire/building requirements. PV module family reference: LONGi 640 Wp datasheet; verify the exact inverter datasheet and firmware.

Confirm MPPT and cold Voc/Isc, AC/DC SPD and selectivity, earthing, roof/wind, utility interface and fire safety before construction.

Is this a final turnkey MV EPC quotation?

No. Only the priced BOQ scope is included. MV collector, new substation and PCC upgrades must be validated separately.

10. Construction video and related solutions

Watch PV installation video on YouTube

Video reference only, not project-completion evidence.

Industrial rooftop solar · Solar estimate library · Substation services

11. Estimate another solar system

QUANGANHCONS · SOLAR EPC

Choose Solar & storage for your property

From electricity needs to a preliminary system and budget. No contact details required.

Technical settings & supply scope

Preliminary defaults are selected. Adjust the roof, equipment, connection and cable routes here.

Battery energy storage (optional)

Capacity is rounded to whole modules/cabinets. Backup defaults: SOC 90% to 10%, SOH 90%, discharge efficiency 95%, power derating 10%. Adjust these assumptions through the assistant when data is available. Backup is priced separately; compatibility and transfer time remain unverified.

Scope and budget basis

Preliminary quantities and rates follow the entered configuration and require survey/design confirmation. Basic scope includes standard rails, clamps and module attachments on a suitable existing structure. Select raised frames, foundations, reinforcement, storage or a new transformer to price additions.

Roof height is measured from ground; rack clearance is separate, above the roof/ground surface. Area and row pitch are layout estimates, not approved drawings or wind, structural, waterproofing or fire assessments. VAT follows the quote configuration and requires contract/invoice confirmation.

Automatic pre-survey calculations

Enter your sizing input to see module area, access area, roof requirement, module mass, capacity and electrical configuration.

Developed and operated by QuangAnhcons. Preliminary results require site survey and written confirmation before ordering or construction.

Solar 8.21.0 · QAC-UI-QUOTE 1.1.1

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