Business Model
Rooftop solar under the PPA model — businesses use clean energy without upfront system investment.
Explore the Process
What is PPA?
A PPA is a long-term power purchase agreement where DNE invests in and operates the system, while the customer buys electricity based on consumption.
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DNE Energy
System Owner & Investor
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Solar System
Energy Generation
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Your Business
Rooftop Owner
How It Works
- 01 Suitable Rooftop
- 02 DNE Survey
- 03 Proposal
- 04 Investment & Installation
- 05 Operation & Maintenance
- 06 Customer Purchases Power
Financial Benefits
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Reduce Upfront Investment
Eliminate capital expenditure on solar infrastructure. Preserve cash flow for core business operations.
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Optimize Operating Cost
Lower electricity bills from day one with solar rates below grid pricing, reducing expenses.
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Long-term Predictability
Lock in stable energy costs with fixed pricing, protecting against future tariff volatility.
ESG & CO2 Benefits
Support emissions reduction targets, ESG reporting and a cleaner corporate image.
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CO2 Reduction
Reduce your carbon footprint with clean energy generated on-site.
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Sustainability
Enhance your ESG profile with renewable energy and lower environmental impact.
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Clean Operations
Transition to clean industrial operations that support your sustainability goals.
Savings Model
Compare your electricity costs before and after implementing a PPA to see how solar energy reduces your monthly expenses.
| Metric | Before PPA | After PPA |
|---|---|---|
| Annual Consumption | 200,000 kWh | 200,000 kWh |
| Grid Electricity Price | 2,870 VND/kWh | 2,870 VND/kWh |
| Solar Output | — | 80,000 kWh |
| PPA Rate | — | 2,296 VND/kWh |
| Grid Electricity Used | 200,000 kWh | 120,000 kWh |
| Annual Cost | 574,000,000 VND | 528,320,000 VND |
| Annual Savings | — | 45,680,000 VND Annual Savings |
Frequently Asked Questions
What is a Power Purchase Agreement (PPA) and how does it work?
A PPA is a financial arrangement where DNE installs solar panels on your rooftop at no cost. You simply purchase the electricity generated at a rate lower than the grid price. DNE owns and maintains the system throughout the contract.
Is my rooftop suitable for solar panel installation?
Most industrial and commercial roofs are. We look for at least 1,000 m² of usable area, a structure with remaining load capacity, and daytime electricity consumption. Our survey team confirms all three with a drone scan and a structural check before any proposal is issued.
What happens if the solar system produces more energy than we consume?
Systems are sized against your measured load profile so that virtually all generation is consumed on site. Where a small surplus occurs, the inverters limit export in line with current EVN regulations, and the design is adjusted at the next annual review.
What is the typical contract duration for a PPA?
Between 15 and 25 years, matched to the equipment warranty. At the end of the term you may extend the agreement, ask DNE to remove the system, or take ownership of it at the agreed residual value.
Who is responsible for maintenance and repairs of the solar system?
DNE is, for the whole contract term. That covers remote monitoring, scheduled cleaning, preventive inspection, and the replacement of any failed component — at no cost to you.
To assess your factory rooftop and suitable savings model, send your information to DNE.