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Economy Benefits Home >Economy Benefits
Economic Benefits of PV Power Plants
1. ROIs of Different Installation Mode
PV power plants are classified as fixed, horizontal single-axis tracking, tilted single-axis tracking, and dual-axis tracking power plants. Table 1.1 describes the return on investment (ROI) of each type of power plant.

Table 1.1 ROIs of different types of PV power plants

Note: The following table assumes that the investment on a fixed PV power plant is 7 RMB/W.

No.Tracking ModeInvestment (RMB/W)Investment Percentage of Tracking System (%)Investment Increase Compared with Fixed Installation (%)ROI Increase Compared with Fixed Installation (%)
Support Tracking SystemOther Equipment InstallationTotal
Equipment InvestmentInfrastructure InvestmentInstallation CostSum
1No tracking (fixed)0.40.40.150.956.05713.57 %00
2Horizontal single-axis tracking1.20.30.21.76.057.7521.94%10.71%15%
3Tilted single-axis tracking1.50.30.22.06.05
8.05
24.84%15.00%20%
4Tonking dual-axis tracking1.80.050.152.06.05
8.05
24.84%15.00%25%-30%
Based on table 1.1, we can conclude that the Dual-axis Tracking PV power plant takes the lead in terms of cost effectiveness, followed by tilted single-axis tracking, horizontal single-axis tracking, and fixed PV power plants. The Tonking dual-axis tracking PV power plant greatly reduces the payback period, and has unique advantages.
2. ROIs of Different Business Models
The Tonking group specializes in technical innovation and financing, and has an expert installation team. To draw upon each others' strength and promote win-win, the group offers the following business models to cooperate with members involved in the industry:

Table 2.1 Responsibility division for different business models

No.ModelPreparationDesignCapitalConstructionOperationMaintenanceElectricity RevenuePlant OwnerRemarks
1EPCOwnerTonkingOwnerTonkingOwnerOwnerOwnerOwner 
2BTOwnerOwnerTonkingTonkingOwnerOwnerOwnerOwner 
3BOTOwnerOwnerTonkingTonkingTonkingTonkingTonking+OwnerTonking+OwnerAfter the contract expires, the plant is transferred to the owner.
4EMCOwnerOwnerOwnerTonkingOwnerOwnerTonking+OwnerOwnerThis model applies to power plant renovation.
5SolarcityOwnerFlexible combination of a variety of cooperation modes 
6Multiple equity cooperation modesOwnerFlexible combination of a variety of cooperation modes 

1. EPC Model

In this model, the owner applies for the grid connection permission and land, and ensures that the pre-installation preparations are ready and that grid connection conditions are met. The Tonking group designs the power plant; builds civil work construction; purchases, installs, and commissions the equipment; performs the pilot operation; and takes responsibility for the project quality, safety, project period, and cost. The power plant will be transferred to the owner as a whole for follow-up operation.
Advantage: As the general contractor, the Tonking group can leverage its dual-axis tracking technology and other supportive products to greatly improve the electricity yield. A 15% increase on investment boost the higher electricity yield by 25%–30%.

2. BT Model

In this model, the owner applies for the grid connection permission and land, and ensures that the pre-installation preparations are ready and that grid connection conditions are met. The Tonking group takes the responsibility for the design, financing, purchase, and construction, and transfers the power plant to the owner after acceptance. The owner pays back the total investment and a reasonable return to the Tonking group.
Advantage: The Tonking group provides financing support to ensure prompt project delivery.

3、BOT Model

This an enhanced version of the BT model. Compared with the BT model, the BOT model allows the owner to sign an entrusted operation contract with the Tonking group.
Advantage: The Tonking group provides both financing support and modernized operation management.

4. EMC Model

This model applies to the renovation of an existing power plant. Replacing a fixed PV system with the Tonking dual-axis tracking system can significantly increase the electricity yield. The Tonking group pays for the renovation cost, and shares the revenue increase with the power plant owner.
Economic benefit analysis: Taking a 10 MW ground PV power station with a 5-year operation period as an example, the total electricity yield is 11 million kWh before the renovation. After being renovated with the Tonking dual-axis tracking system at a cost of 1–1.5 RMB/W (total cost of 10–15 million RMB), the electricity yield increases by 25–30% (3.3 million kWh) to 14.3 million kWh per year. The electricity yield increase means significant revenue increase, and guarantees an appropriate payback period for the renovation investment.

5. Solarcity Model

Leveraging its strong financing capability, Tonking group provides financial services such as PPP to owners.

6. Multiple Equity Cooperation Modes

Tonking group also cooperates with owners in various equity cooperation modes to build joint venture PV power plants and achieve win-win for both parties.

 

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