Rooftop solar for factories & businesses

Rooftop solar with zero capex – lower power bills from month one

Viet Green Solar invests in, builds and operates the solar system on your factory roof. You pay only for the electricity you use, 20–35% below the EVN tariff. If you prefer to own the system, we act as your EPC contractor with a typical 3–4-year payback.

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Free site survey All permits handled 24/7 output monitoring

VND 0Upfront investment under the ESCO model

20–35%Discount vs. EVN electricity tariff

21,6 MWpTotal capacity of 14 factory projects completed and under construction

3–4 yearsPayback period with the EPC model

Two ways to go solar

Zero capex or full ownership? You choose – we handle everything.

In both models Viet Green Solar surveys, designs, builds and operates the system. The difference is who invests and who owns it.

ESCO – roof lease, power purchase

Viet Green Solar invests 100% in the system on your roof and sells you the electricity below the EVN tariff.

Zero capex

upfront investment

Consulting, design and installation funded by our investment fund – no capital from you
Use all the power produced at a 20–35% discount to EVN
Free maintenance, cleaning and equipment replacement for 20–25 years
We carry the performance risk – nothing added to your balance-sheet debt
At the end of the contract, the system is handed over to you free of charge

ESCO contract terms →

Highest return

EPC – turnkey contractor

You invest in and own the system. We design, supply, build, connect and hand it over turnkey.

3–4 years

typical payback period

All output is yours – maximum savings over 25+ years
System performance guaranteed above 80% for 30 years
Permits, grid connection and utility agreements handled
Battery storage can be added for evening use

Criteria	ESCO	EPC
Upfront capital	Zero capex	100% (instalments available)
System owner	Viet Green Solar, transferred at contract end	Customer
Monthly benefit	20–35% off on solar-supplied power	100% saving on solar-supplied power
Maintenance	Free for the contract term	Optional O&M package
Best for	Factories and businesses; homes with bills from VND 1.5 million/month	Self-funding companies of any size

Featured projects

Factory roofs we have built and are building

From a 300 kWp packaging plant to a 4 MWp steel mill, across Ho Chi Minh City, Long An, Dong Nai, Can Tho, Hung Yen, Yen Bai and Lam Dong.

Factory rooftop solar

Project groundbreaking ceremony

Installing solar modules

Panel cleaning (O&M)

MWp-scale system

Construction crew

Switchboards & inverters

Completed system overview

Groundbreaking with our client

Engineering team on site

Project list

Hoa Phat Long An Steel Factory

Thuan Dao Industrial Park (expansion), Long An

4.001,02kWp

≈ 5.126 MWh/year · ≈ 3.486 t CO₂ avoided/year

Eclat Textile Factory

Nhon Trach II Industrial Park, Dong Nai

4.000kWp

≈ 5.125 MWh/year · ≈ 3.485 t CO₂ avoided/year

Tam Lang Rice Mill

Co Do, Can Tho City

3.745,7kWp

≈ 4.799 MWh/year · ≈ 3.263 t CO₂ avoided/year

Viet Tri Yarn Factory

Rach Bap Industrial Zone, Ho Chi Minh City

2.147kWp

≈ 2.751 MWh/year · ≈ 1.870 t CO₂ avoided/year

A.J.PLAST Co., Ltd.

Bau Bang Industrial Park, Binh Duong

1.956,24kWp

≈ 2.506 MWh/year · ≈ 1.704 t CO₂ avoided/year

S&K Vina Factory

Minh Hung – Korea Industrial Park

1.365kWp

EPC contractor ≈ 1.749 MWh/year · ≈ 1.189 t CO₂ avoided/year

Viet Giang Garment Factory

Khoai Chau, Hung Yen

1.055,34kWp

≈ 1.352 MWh/year · ≈ 919 t CO₂ avoided/year

Phuoc Thanh Plastic Factory

Cat Lai Industrial Park, Ho Chi Minh City

800,05kWp

≈ 1.025 MWh/year · ≈ 697 t CO₂ avoided/year

Nam Thien Long Factory

Tan Tao Industrial Park, Ho Chi Minh City

722,3kWp

≈ 925 MWh/year · ≈ 629 t CO₂ avoided/year

D-Code Factory

Thinh Hung Industrial Cluster, Yen Bai

520,08kWp

≈ 666 MWh/year · ≈ 453 t CO₂ avoided/year

Best Innovation Glove Co., Ltd.

Minh Hung – Korea Industrial Park

500kWp

≈ 641 MWh/year · ≈ 436 t CO₂ avoided/year

USPLAS Long An JSC

Long An

477,52kWp

≈ 612 MWh/year · ≈ 416 t CO₂ avoided/year

Pharmaceutical Packaging Factory

Vinh Loc A Industrial Park, Ho Chi Minh City

308,88kWp

≈ 396 MWh/year · ≈ 269 t CO₂ avoided/year

MDF Wood Manufacturing JSC – Phase 2

Thuan Hanh Commune, Lam Dong

Rooftop solar

Total capacity of 14 projects: about 21,6 MWp. Output and CO₂ figures are estimates based on Ho Chi Minh City sun hours.

Turnkey installation pricing

Enter your electricity bill and see which model pays off

Based on the current EVN tariff, your connection voltage and actual sun hours in Ho Chi Minh City. Turnkey prices include equipment, mounting, switchboards, cables, installation and grid-connection paperwork.

Recommended capacity—

Number of panels 620 Wp—

Roof area required—

Output / month—

ESCO – zero capex

Discount 25%

EPC – self-investment

100% ownership

25-year cumulative cash flow

EPC cumulativeESCO cumulative

How much of your bill does solar replace?

——

Tariffs per Decision 1279/QD-BCT (from 10 May 2025) plus 8% VAT. Cash flow assumes 3%/year tariff escalation, 0.5%/year panel degradation and 1%/year O&M cost for EPC. Prices are indicative; a formal quotation follows the site survey.

Operation & maintenance (O&M)Remote monitoring, inspections every 3 months and fast fault response. Priced per MWp per year. Battery energy storage (BESS)Store midday solar for the evening peak and cut peak-hour costs. ESG reporting & I-RECMonthly generation and CO₂ data for your buyers’ Scope 2 emission reporting.

Company profile

Download our company profile for your management team

Includes ESCO/EPC investment models, business licence, organisation chart, equipment, project list and our commitments.

Bilingual Vietnamese – English
14 factory projects, about 21.6 MWp in total
No spam – we only contact you when you need us

How we work

From survey to first power

One project manager from start to finish. Timelines are for a factory of about 500 kWp.

Roof surveyMeasurements, drone survey, structural assessment and 12 months of consumption data.1–3 days
Design & financialsYield simulation, ESCO/EPC proposals and a 25-year cash flow.3–5 days
Contract signingAgree on tariff, term, output guarantee and warranty.1–2 weeks
PermitsFire-safety documents, power-source notification/registration and utility agreement.2–4 weeks
InstallationSafe installation without disrupting production. Each item inspected and accepted.3–6 weeks
Operation24/7 monitoring, monthly output reports and maintenance every 3 months.20–25 years

Our commitments

No disruption to productionThe solar system does not affect any factory operations.

Free roof reinforcementWe reinforce the building structure and repaint the metal roof.

Fully compliant and approvedDesigned and built to investment-fund standards, approved by fire, power and environmental authorities.

Maintenance every 3 monthsRegular preventive maintenance throughout the operating period.

About us

End-to-end rooftop solar solutions

Viet Green Solar is a brand of 365 NETZERO Investment and Construction JSC. We provide turnkey rooftop solar solutions: site survey, design, equipment supply, installation, operation and maintenance.

We also deliver industrial and civil construction, mechanical fabrication, wastewater treatment systems and technical equipment supply. We are a trusted partner to many factories on their journey to clean, affordable and sustainable energy.

Our motto: “Honesty – Reputation – Quality”

100% investment under the ESCO model, or EPC contracting for companies investing their own capital
Equipment from reputable brands, with system performance guaranteed above 80% after 30 years
O&M to investment-fund standards, with inspections every 3 months

Vision

To become a leading Vietnamese company in renewable energy and sustainable construction, pioneering green, economical and effective solutions for communities and businesses.

Mission

To provide high-quality solar solutions that optimise our customers’ costs, and to invest in, build and operate safe, compliant and environmentally friendly projects.

Honesty · transparencyReputation · keeping our wordQuality · continuous improvementResponsibility · to the communityPartnership · long-term growth

365 NETZERO Investment and Construction Joint Stock Company Enterprise code: 0318431431 · First registered on 02/05/2024 Issued by Business Registration Office – Ho Chi Minh City Department of Planning and Investment

Genuine equipment

Equipment we install on your roof

All equipment is Tier-1 with full CO/CQ and VAT invoices. For ESCO projects we select equipment by 25-year cost per kWh, not by purchase price.

Solar modules

N-type TOPCon bifacial double-glass modules, 560–720 Wp, system performance above 80% after 30 years.

TOPConBifacialDouble glass

Inverters

Grid-tied, hybrid and zero-export. Online monitoring down to each string.

Grid-tiedHybridZero export

Lithium storage

Safe, long-life LFP. From 5 kWh for homes to MWh-scale BESS for factories.

LiFePO₄BESS

Mounting & balance of system

Cable trays, aluminium rails, AC/DC switchboards, solar cables, lightning protection, earthing and panel-cleaning water systems.

AC/DCEarthing

Modules

AE SolarCanadian SolarJA SolarJinko SolarLONGiRisen

Inverters

DeyeGrowattHuaweiSolisSungrow

Net Zero & ESG

Clean power that helps you pass your buyers’ green audits

Many export brands require suppliers to report Scope 2 emissions and show a renewable-energy roadmap. Rooftop solar is the fastest way to cut Scope 2 without changing your production lines.

Monthly generation and CO₂ reduction reports, ready for ESG reporting
Support with I-REC renewable energy certificate registration
Roadmap advice combining storage and energy efficiency

Every 1 MWp of rooftop solar per year

Generates about 1.3 million kWh of clean power

Based on 4.5 peak sun hours per day in Ho Chi Minh City and a grid emission factor of 0.68 kg CO₂/kWh.

≈1,3 GWhpower / year

≈890 tCO₂ avoided

≈5.800 m²roof area

Capabilities

Profile, licences and office

EPC capabilitiesFactory projects from 300 kWp to 4 MWpView projects → Company informationTax code 0318431431, first registered 02/05/2024Details → Ho Chi Minh City officeNo. 45 Street 5, Van Phuc City, Hiep Binh Ward, Ho Chi Minh City, VietnamView address → Talk to an engineerAn engineer calls back within 30 minutes during business hoursSend a request →

FAQ

Questions companies ask most

Didn’t find your answer? Call our hotline or message us on Zalo and an engineer will reply directly.

Is the ESCO model really zero investment?

Yes. Viet Green Solar covers all equipment, installation, permitting and maintenance costs. You sign a 20–25-year power purchase agreement and pay monthly for the solar kWh you use, at 20–35% below the prevailing EVN tariff.

Does the ESCO price rise when EVN raises tariffs?

The ESCO price equals the EVN tariff applicable to your factory minus the agreed discount. When EVN changes its tariff, the ESCO price follows, but your discount stays fixed for the whole contract.

Who owns the system after the ESCO contract?

The system is handed over to the building owner free of charge. Panels still retain around 80% performance and can generate for many more years, with all that power free for your company.

Can you install on an old metal roof?

Our structural engineers assess the roof during the survey. For factories we reinforce the structure and repaint the metal roof before installation.

Will installation disrupt production?

No. Rooftop work follows a plan agreed with the factory, and the switchboard connection is done in a time slot you choose, usually on a day off.

Do we have to sell power to the EVN grid?

No. Systems are designed for self-consumption, using power on site first, and zero-export devices can be fitted. Any surplus sold follows Decree 58/2025/ND-CP as amended by Decree 243/2026/ND-CP.

Can FDI companies sign contracts in English?

Yes. Contracts, generation reports and CO₂ reports can be bilingual Vietnamese–English for your parent company and ESG audits.

How long until the system starts generating?

A factory of a few hundred kWp takes about 6–10 weeks including permits. Homes usually take 1–3 days to install.

Contact

Book a free roof survey

Send your latest electricity bill. Within 48 working hours we will send ESCO and EPC proposals with a 25-year cash flow.

365 NETZERO Investment and Construction Joint Stock CompanyNo. 45 Street 5, Van Phuc City, Hiep Binh Ward, Ho Chi Minh City, VietnamOpen in Google Maps →

Hotline & Zalo+84 936 388 012Mon – Sat, 7:30 – 17:30 (GMT+7)

Emailcontact@vietgreensolar.vnAttach your electricity bill for a faster proposal