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2 MWp Industrial Rooftop Solar | Engineering and PV Budget

2 MWp industrial solar: 2,000 kWp DC, 1,750 kW AC, 3,125 LONGi modules. English PV/LV reference BOQ has 78 lines; MV/EPC totals require separate verification.

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QUANGANHCONS | INDUSTRIAL EPC ENGINEERING

Industrial rooftop PV 2 MWp: equipment and EPC reference

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

QAC-SOL-EST-20261109-EE86C99C · QAC Solar 8.21.0

2,000 kWpPV DC nameplate
1,750 kWTotal inverter AC
3,125 modulesLONGi 640 Wp modules

1. Applications and self-consumption

A multi-building rooftop system with a large number of inverters needs sectionalised LV collection, transformer capacity checks, PCC export control and an explicit comparison with an MV step-up option. This is a PV self-consumption reference without battery storage, not a surveyed or previously built project.

2. Equipment nameplate and electrical configuration

Nominal capacity class 2 MWp
PV module 3,125 × LONGi Solar LR7-72HVH-640M, 640 Wp each
Installed DC 2,000 kWp
Inverters 14 × Sungrow SG125CX-P2
Combined AC 1,750 kW across 3 provisional groups
Strings 174, with MPPT allocation requiring verification
DC/AC ratio 1.14
Common VI/EN budget reference QAC-SOL-EST-20261109-EE86C99C · 09 Nov 2026

3. Engineering calculations

PDC = 3,125 × 640 / 1,000 = 2,000 kWp. DC/AC = 2,000 / 1,750 = 1.14. Check module temperature, MPPT operating window, input currents, inverter derating, clipping and lightning protection on the actual topology.

Aggregate 400 V three-phase current at assumed PF 0.99 = 1,750 × 1,000/(√3 × 400 × 0.99) ≈ 2,551.42 A. This is not a permissible single-board design. It must be divided among real inverter feeders, protected collector boards and (where required) MV step-up sections.

4. Roof, protection and grid interface

Roof strength, wind anchoring, waterproofing, walkways, cable routes, fault-level study, feeder grading, protection relays, PCC metering, anti-islanding and zero-export controls need separate checks. The step-up stations, protected medium-voltage feeder network, remote control and utility interface have NOT been established by this LV-only snapshot.

5. Programme and acceptance

Prepare WBS: site survey and conceptual single-line diagram → engineering, utility and protection coordination → equipment procurement → phased safe PV installation → LV/MV and commissioning works where within contract → protection/insulation/earthing checks → as-built records and handover. Detailed durations depend on site, supplier lead time and approvals.

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. 2 MWp Solar estimate — view and download

Quote reference: QAC-SOL-EST-20261109-EE86C99C · QAC Solar 8.21.0 · Pre-survey reference

Before VAT: 24,000,000,000 đ · Illustrative VAT 10%: 2,400,000,000 đ · With VAT: 26,400,000,000 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
1 207,947 184,532 23,415 525,560
2 240,736 209,566 31,170 480,480
3 280,636 246,082 34,553 536,760
4 254,187 221,836 32,351 506,800
5 235,622 216,587 19,034 536,760
6 204,840 188,044 16,797 518,000
7 192,337 177,459 14,878 525,560
8 238,631 216,153 22,477 536,760
9 194,011 180,667 13,344 518,000
10 213,808 191,814 21,994 525,560
11 210,494 188,310 22,184 518,000
12 230,146 206,599 23,547 525,560

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 0 315 0
1 0 315 0
2 0 315 0
3 0 315 0
4 0 315 0
5 0 315 0
6 60.9 315 60.9
7 448 787.5 448
8 809.6 1,312.5 809.6
9 1,137.5 1,312.5 1,137.5
10 1,306.6 1,312.5 1,306.6
11 1,384.7 1,312.5 1,312.5
12 1,370.4 875 875
13 873.2 1,312.5 873.2
14 755.3 1,312.5 755.3
15 570.7 1,312.5 570.7
16 336.7 1,312.5 336.7
17 76.8 1,312.5 76.8
18 0 612.5 0
19 0 612.5 0
20 0 612.5 0
21 0 612.5 0
22 0 315 0
23 0 315 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

Assess IEC 62548-1, IEC 60364-7-712 and applicable Vietnamese electrical, structural, fire, and grid-connection rules. Module datasheet: LONGi LR7-72HVH. Inverter and relay selection must follow correct manufacturer revisions.

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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