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3 MWp Industrial Rooftop Solar | Engineering and PV Budget

Industrial 3 MWp rooftop PV, 3,000.32 kWp DC, 2,625 kW AC, 21 inverters and 78 English-priced BOQ lines. Indicative PV/LV only; MV network and PCC design pending.

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QUANGANHCONS | INDUSTRIAL EPC ENGINEERING

Industrial rooftop PV 3 MWp: equipment and EPC reference

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

QAC-SOL-EST-20261109-1A3E9D63 · QAC Solar 8.21.0

3,000.32 kWpPV DC nameplate
2,625 kWTotal inverter AC
4,688 modulesLONGi 640 Wp modules

1. Applications and self-consumption

This preliminary self-consumption PV system is intended for a multi-building industrial campus requiring a sectionalised electrical architecture. The final installed capacity must reflect roof area, measured hourly load, shutdown periods, PCC restrictions and site electrical infrastructure; the title capacity is not a guarantee of design output.

2. Equipment nameplate and electrical configuration

DC 3,000.32 kWp
AC 2,625 kW
LONGi 4,688 × 640 Wp

3. Engineering calculations

Assuming a reference 640 Wp module for mathematical illustration only: Nmodules = ceil(3000 × 1,000 / 640) = 4688 modules; installed DC capacity = 4688 × 640 / 1,000 = 3000.32 kWp DC. Module and inverter models, MPPT limits, string counts and the DC/AC ratio require dedicated engineering verification.

4. Roof, protection and grid interface

This preliminary self-consumption PV system is intended for a multi-building industrial campus requiring a sectionalised electrical architecture. The final installed capacity must reflect roof area, measured hourly load, shutdown periods, PCC restrictions and site electrical infrastructure; the title capacity is not a guarantee of design output.

5. Programme and acceptance

Build a work breakdown structure for site survey, electrical and structural design, approvals, procurement, roof works, DC/AC installation, relay/protection testing, commissioning and handover. Review IEC 62548-1, IEC 60364-7-712 or the applicable Vietnamese standards, current electrical and fire regulations, utility requirements, and manufacturer instructions for each actual project.

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. 3 MWp Solar estimate — view and download

Quote reference: QAC-SOL-EST-20261109-1A3E9D63 · QAC Solar 8.21.0 · Pre-survey reference

Before VAT: 36,003,840,000 đ · Illustrative VAT 10%: 3,600,384,000 đ · With VAT: 39,604,224,000 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
1 311,954 276,823 35,131 788,340
2 361,142 314,376 46,766 720,720
3 420,998 369,154 51,845 805,140
4 381,321 332,784 48,537 760,200
5 353,470 324,910 28,560 805,140
6 307,293 282,092 25,201 777,000
7 288,537 266,213 22,324 788,340
8 357,984 324,260 33,724 805,140
9 291,047 271,027 20,020 777,000
10 320,746 287,746 33,000 788,340
11 315,775 282,491 33,285 777,000
12 345,256 309,927 35,329 788,340

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 0 472.5 0
1 0 472.5 0
2 0 472.5 0
3 0 472.5 0
4 0 472.5 0
5 0 472.5 0
6 91.3 472.5 91.3
7 672.1 1,181.3 672.1
8 1,214.5 1,968.8 1,214.5
9 1,706.4 1,968.8 1,706.4
10 1,960.1 1,968.8 1,960.1
11 2,077.2 1,968.8 1,968.8
12 2,055.8 1,312.5 1,312.5
13 1,309.9 1,968.8 1,309.9
14 1,133.1 1,968.8 1,133.1
15 856.1 1,968.8 856.1
16 505.2 1,968.8 505.2
17 115.2 1,968.8 115.2
18 0 918.7 0
19 0 918.7 0
20 0 918.7 0
21 0 918.7 0
22 0 472.5 0
23 0 472.5 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

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

© 2026 QUANG ANH CONSTRUCTION ELECTRICITY COMPANY LIMITED. Quotation prepared by QuangAnhcons. Please retain the issuer name and reference when saving or sharing. Third-party names and materials belong to their respective owners.