01Orca Group
Power investment company – ESCO model
Funds 100% of the solar and BESS investment; customers simply buy electricity at a rate below the grid tariff with no upfront capital.
ESCOSolar + BESS investmentLong-term power purchase agreement
Solar · BESS · DPPA
Solar energy solutions across the full project lifecycle for businesses
Orca Energy is a turnkey solar EPC and O&M contractor, an investor in solar plus battery storage (BESS), and an advisor on Vietnam's direct power purchase agreement (DPPA) mechanism.
- ≈ 88 MWp
- Rooftop capacity delivered (Lumen Energy portfolio)
- 26
- Rooftop solar projects completed
- 15
- Provinces and cities covered
- 254 kWp – 13 MWp
- Project size range
Rooftop installation at Viet Yen water plant – a PNE project
- 01
Turnkey solar EPC & O&M contractor
Delivered by member companies PNE & LUMEN · Schedule & yield guarantees · Monthly performance reports
- 02
Solar & BESS investor (ESCO)
Immediate electricity cost savings · No upfront investment required · Improved ESG metrics, I-REC certificates
- 03
Solar project advisory services
Pre-feasibility report · Complete DPPA application package · Support across the full project lifecycle
99%
System availability thanks to 24/7 monitoring and scheduled maintenance
About Orca Energy
A partner for your entire energy transition journey
Orca Energy was founded by engineers and project finance specialists in renewable energy. We provide end-to-end solar solutions: from site survey, design and construction to operation and maintenance, investment structuring and electricity market advisory.
Single point of accountability
From permitting and design to construction and operation, Orca Energy owns the full project lifecycle.
Deep technical expertise
Electrical, structural and project finance engineers work together on one cost-optimised solution.
Transparent data
Generation, performance and cash flow are monitored and reported to customers on a regular basis.
Flexible financing
Customers can self-invest (CAPEX) or let Orca Group invest and sell electricity (OPEX).
Group structure
Introducing Orca Group
Orca Group is a renewable energy group operating an ESCO model: it invests directly in solar systems for customers and delivers construction through member companies specialised in EPC.
01
02PNE
Member company – EPC contractor
Handles design, procurement and construction of rooftop and ground-mounted solar systems for Orca Group projects and external clients.
EPCRooftop & ground-mount construction
View PNE profile →
03LUMEN
Member company – EPC contractor
EPC contractor for rooftop solar, BESS, EV charging and electrical infrastructure, managing design, procurement, construction, commissioning and handover.
EPC contractorSolar + BESSEV Charging
View LUMEN profile →Related companies
A Chau Energy Trading
Trading company
Supplies solar equipment, battery storage and electrical materials for projects across the Orca Group ecosystem.
Tay Nam Steel Group
Visit website →Funding partner & largest customer
Provides project funding and credit limits, and is the largest customer in the ecosystem: 30 MWp of solar already installed and an expansion to 100 MWp under preparation.
E&P Company
Visit website →Related company – engineering & projects
Participates in developing and delivering energy projects; see the dedicated E&P website for details.
Three business lines
One partner for every solar requirement you have
01EPC & O&M
Turnkey solar EPC & O&M contractor
Design, procurement, construction, operation and maintenance of rooftop, ground-mounted and floating solar systems under a single point of responsibility.
- Site survey, roof load assessment and PVsyst yield simulation
- Electrical and structural design, grid connection permits and utility agreements
- Tier 1 equipment procurement, safe construction, testing and handover
- Scheduled O&M: module cleaning, thermal inspection, 24/7 monitoring
Delivered by member companies PNE & LUMENSchedule & yield guaranteesMonthly performance reports
02ESCO · Solar + BESS investment
Solar & BESS investor (ESCO)
Orca Group funds 100% of rooftop solar systems combined with battery storage (BESS); businesses simply buy electricity at a rate below the grid tariff.
- Zero-capex model for roof owners – no impact on operating cash flow
- Long-term power purchase agreement with a stable discount
- BESS integration to cut peak-hour costs and improve supply stability
- Asset transfer to the host at the end of the contract term
Immediate electricity cost savingsNo upfront investment requiredImproved ESG metrics, I-REC certificates
03Project advisory
Solar project advisory services
Advisory on solar project contracts and delivery, utility grid connection, and Vietnam's direct power purchase agreement (DPPA) mechanism for both consumers and generators.
- Contract and project delivery advisory for solar projects
- Grid connection advisory: documentation, connection agreement, commissioning
- DPPA advisory: feasibility, legal framework, electricity pricing models
- Matching buyers and sellers and supporting PPA negotiation
Pre-feasibility reportComplete DPPA application packageSupport across the full project lifecycle
Advisory services
Three advisory streams for solar energy projects
Dedicated DPPA site01
Solar project contract and delivery advisory
Review of EPC contracts, power purchase agreements, investment structures and delivery plans from development through to operation.
02
Utility grid connection advisory
Assessment of connection conditions, preparation of documentation and coordination with the utility to secure the connection agreement, energisation and commissioning.
03
DPPA project advisory
Advisory on the direct power purchase agreement (DPPA) mechanism: feasibility, legal documentation, pricing models and buyer–seller matching.
Floating solar (Floating PV)
Design consulting & EPC for floating solar (Floating PV)
Every reservoir has its own bathymetry, hydrology and grid situation, so floating solar needs project-specific design consulting. Orca Energy delivers design consulting, detailed design and turnkey EPC for floating solar with partner Sungrow.
163 MWp
Floating solar pipeline under development
120+ MWp
Total capacity advised and delivered to date
60+
Factories and industrial parks served
- Pre-feasibility advice: site selection, water-surface boundary, grid options
- Basic & detailed design: floats, mooring, array layout, cable routes, floating substation
- Turnkey EPC: procurement, construction, testing, energisation and O&M
- Offtake structuring: ESCO investment, direct power purchase or DPPA
Orca Energy & Sungrow FPV strategic alliance
Sungrow FPV's world-leading floating platform technology combined with Orca Energy's EPC execution and financing structures for floating solar projects in Vietnam.
Sungrow FPV floating technology track record
8 years running
Global market share leader in FPV floating systems
5.0 GW+
Total FPV capacity designed and installed worldwide
340+
Floating solar projects delivered globally
320+
Patents in floating platform technology and R&D
Floats and mooring engineered for harsh conditions
Premium-grade HDPE floats
Food-contact grade material that does not affect water quality; structure designed for storm winds up to 260 km/h.
Multi-point elastic mooring
Adapts to seasonal water-level swings of up to about 10 m while keeping the array stable.
DNV-certified engineering
Shore-fixed or bottom mooring calculated and certified to DNV international standards.
Project-specific design consulting workflow
No single design fits every reservoir — each step below is tailored to the measured data of that specific water body.
- 01
Water body & hydrology survey
Bathymetric survey plus analysis of water-level variation, wind direction, waves and water quality.
- 02
Mooring analysis & design
Shore-fixed or elastic bottom mooring designed for large seasonal water-level swings.
- 03
Basic design & floating inverter station
Electrical design, floating inverter/transformer barge and C5-grade coating against corrosion in high humidity.
- 04
PVsyst simulation & LCOE
Yield simulation including the water cooling effect, plus LCOE and financial analysis.
- 05
Clearing legal bottlenecks
Water surface lease, EVN grid connection agreement, environmental commitments and PPA negotiation.
- 06
Site works & SCADA integration
Installation, commissioning, end-to-end SCADA links to A0/A2/EVN SPC and long-term O&M.
Consulting deliverables for the owner
Pre-feasibility reportBasic/detailed drawingsPVsyst reportMooring & structural designCost estimate & LCOEO&M plan
Two cooperation models
CAPEX model (self-invested)
- Upfront investment
- The client funds 100% of the capital.
- Solution
- Orca Energy and Sungrow FPV provide design consulting and turnkey EPC.
- Asset ownership
- Handed over to the client right after successful commissioning.
- Operation & risk
- The client owns the system; Orca provides O&M services.
ESCO model (zero upfront cost)
- Upfront investment
- No capital from the client; Orca Group invests 100%.
- Solution
- Orca builds the entire floating solar and BESS system on the client's water surface.
- Asset ownership
- All assets transfer to the client at the end of the contract term.
- Operation & risk
- Orca carries the operating risk; the client buys power at a discount to EVN tariffs.
How the zero-cost ESCO model works
100% capital from Orca
Orca Group funds the full FPV and BESS system on the client's idle water surface.
Discounted clean power
The client buys the output at a discount to EVN tariffs, cutting OPEX from day one.
No operating risk
Orca monitors and maintains the whole system throughout the project life.
Asset transfer
At the end of the contract the generation system is transferred to the client.
Technology reference project in Vietnam
70 MWp
Gia Hoet 1 and Tam Bo reservoir cluster, Ba Ria - Vung Tau
A large-scale floating solar cluster in Vietnam built on Sungrow HDPE floats. It is our partner's technology reference, not part of Orca's own construction portfolio.
- · Sungrow HDPE floating platform throughout
- · Customised shore-fixed mooring for complex terrain
- · SCADA synchronised with national and regional dispatch centres
Long-term operation and maintenance commitment
O&M packages covering a project life of up to 25 years to protect yield and asset value.
99%
Contractual system availability commitment
- 24/7 real-time monitoring — Array performance, current and fault alerts tracked from the operations centre.
- Scheduled maintenance every 6 months — On-site deep maintenance by engineers on a fixed schedule.
- Standard mechanical servicing — Array bolts torqued to the 15 Nm specification to avoid mechanical drift.
- Mooring & structure inspection — Stability assessment of the mooring system under hydrological loads.
2026 generation price bracket (draft)
Maximum prices excluding VAT, per the 2026 draft generation price bracket of the Electricity Authority – Ministry of Industry and Trade.
| Region | Ground-mounted | Ground + BESS | Floating | Floating + BESS |
|---|---|---|---|---|
| North | 1,612.00 (1,382.71) | 1,823.50 (1,571.98) | 1,965.31 (1,685.76) | 2,132.08 (1,876.57) |
| Central | 1,310.22 (1,107.11) | 1,480.22 (1,257.05) | 1,581.20 (1,336.08) | 1,715.17 (1,487.18) |
| South | 1,118.88 (1,012.05) | 1,264.88 (1,149.86) | 1,357.88 (1,228.23) | 1,472.93 (1,367.13) |
Wind power 2026
- Onshore · North2,187.83 (1,959.40)
- Onshore · Central2,079.02 (1,807.40)
- Onshore · South2,076.90 (1,840.30)
- Nearshore · Single bracket for all three regions2,126.92 (1,987.41)
Investment opportunity
- Floating tariffs beat ground-mounted — The 2026 bracket for floating solar is about 20% higher than ground-mounted in the same region.
- Adding BESS lifts the tariff — Projects with storage get an 8–16% higher bracket and qualify more easily for DPPA.
- No land needed — Irrigation and hydropower reservoirs or plant water bodies cut land cost and site-clearance time.
VND/kWh · Draft figures, not yet an issued decision. Values in brackets are the 2025 bracket for comparison.
Delivery process
Four steps from site survey to optimised operation
- 01
Survey & assessment
Collect consumption data, assess roof or land conditions and review grid connection capacity.
- 02
Design & financial model
Propose the technical solution, expected yield, IRR and the most suitable investment structure.
- 03
Construction
Manage equipment, schedule and site safety, and complete commissioning with the utility.
- 04
Operation & optimisation
Continuous generation monitoring, scheduled maintenance and investment performance reporting.
Featured projects
Experience across a wide range of project models
Portfolio taken from the capability profiles of group members Lumen Energy and PNE; capacities as stated in project records.
Rooftop EPC · Lumen Energy
VinaOne Steel Plant
13 MWp
Long Hiep, Ben Luc, Long An
Rooftop EPC · Monitoring & optimisation
Tay Nam Steel Plant
10 MWp
Long Son, Can Duoc, Long An
Rooftop EPC · Lumen Energy
ADN Binh Duong Plant
1,397 kWp
Tan Phuoc Khanh, Tan Uyen, Binh Duong
Design & construction · PNE
Tien Son Dairy Plant
4,998.8 kWp
Tien Son IP, Tien Du, Bac Ninh
Project gallery
Real case studies at the plants we delivered
On-site photos taken by the PNE team together with satellite imagery of each plant, with capacities as recorded in the project files.
Design – constructionSatellite imagery · Google EarthNhà máy sữa Tiên Sơn
Bắc Ninh•4.998,8 kWp
Design – constructionSatellite imagery · Google EarthNhà máy sữa bột Việt Nam
Bình Dương•2.499,2 kWp
Design – constructionSatellite imagery · Google EarthNhà máy sữa Sài Gòn
TP. Hồ Chí Minh•1.613,08 kWp
Project names and capacities follow the capability profile of member company PNE. Satellite imagery captured from Google Earth/Google Maps; site photos from the project files.
Case study
Self-consumption solar + BESS at Tay Nam Steel Group
A rooftop self-generation, self-consumption solar system combined with battery storage for a steel plant in Thien Loc Thanh industrial cluster (Tay Ninh), with technical advisory, load simulation and storage sizing by Orca Group and PNE.
Key parameters
- DC capacity
- 14,371.2 kWp
- AC capacity
- 11,400 kW
- Equipment
- 22,281 modules of 645 Wp, 76 inverters of 150 kW
- Roof area
- approx. 80,000 m²
Online platform
Size your system and buy solar products on SolaNow.vn
SolaNow.vn is our platform where you can size your system, estimate generation and investment cost, and order solar products online.
- Capacity and yield calculator based on your electricity bill
- Investment cost and payback period estimates
- Order modules, inverters, batteries and accessories
SolaNow.vn
solanow.vn
Want to know how much power your factory roof could generate?
Send us your last three electricity bills and Orca Energy will calculate generation, savings and the right investment option — free of charge.
Frequently asked questions
Zero-upfront solar, ESCO and DPPA: what businesses ask us
Common questions from factories evaluating commercial rooftop solar, solar plus BESS investment and Vietnam's direct power purchase agreement (DPPA).
What does zero-upfront solar mean?+
Zero-upfront (ESCO) solar means Orca Group funds 100% of the rooftop solar system on your factory roof. You invest no capital and simply pay for the solar electricity you consume at a tariff below the utility rate. It is not free electricity: the value is avoiding capital expenditure while lowering the monthly power bill.
What does a factory need to qualify for rooftop solar?+
You need available roof area (typically 3,000 m² or more for an investment model), a roof structure able to carry the load, stable daytime consumption and a remaining lease term long enough for the power purchase agreement. Orca Energy runs a free roof survey, load measurement and PVsyst simulation before proposing an EPC or ESCO structure.
What is included in solar O&M?+
Our solar O&M scope covers 24/7 generation monitoring, scheduled module cleaning, inverter inspection, thermal imaging, fire and lightning protection checks and periodic performance reporting, keeping system availability high across the asset's lifetime.
Why add BESS battery storage to a solar plant?+
BESS shifts solar output into peak-tariff hours, reduces contracted demand, supports power quality and backs up critical loads. For factories on time-of-use tariffs, solar plus storage usually delivers better economics than solar alone.
Does a DPPA make electricity cheaper than the utility tariff?+
Not necessarily. Under the through-the-grid DPPA model your total cost combines the spot market price, the contract-for-difference settlement with the generator and transmission, distribution, dispatch and ancillary service charges, so it is often not lower than the EVN tariff. The main value is verifiable renewable sourcing for RE100/ESG reporting and the carbon-related opportunities allowed by current regulation.
Which projects suit floating solar PV?+
Floating PV fits hydropower reservoirs, industrial water basins and disused aquaculture ponds — sites short on land but with stable water surface. Every project needs dedicated design advisory: hydrology survey, HDPE float and mooring selection, electrical and grid connection design, yield simulation, and only then EPC and O&M.
Contact
Get a free site survey and quotation
Share your electricity bills and available roof area, and the Orca Energy team will respond with a preliminary proposal within 48 working hours.
- Hotline
- 0867 831 368
- solar@orcaenergy.vn
- Address
- 2F, Dolphin Plaza, 6 Nguyen Hoang, Tu Liem, Ha Noi, Vietnam
- Working hours
- Monday – Friday: 08:00 – 17:30