Proposed Structure of this Public Private Partnership (PPP) Model
The project will be leveraging a Existing-Build-Finance-Bulk-Tariffs model. An experienced waste treatment operator is provided the concession to receive pre-agreed daily volumes of waste from the government or state-owned entity landfill operator, in lieu of landfill tipping at no charge. The private sector entity in this case will be raising financing and building the waste treatment facility, after which the investment will be recovered through the sale of the by-products (e.g. compost material), as well as through the emission reduction credits (ERCs) generated and sold in the voluntary carbon markets.
Table 1: Model Attributes
Dimension | Attribute | Description |
|---|---|---|
| Business | New | This model assumes that the government or state-owned entity grantor will be granting a concession to an experienced waste treatment operator, potentially through a competitive bidding process. |
| Existing | ||
| Construction | Build | The project involves the build of the new waste treatment facility in the vicinity of the landfill operated by the grantor. |
| Refurbish | ||
| Private Funding | Finance | The project company will be charged with raising financing for the new installation, both from financial institutions as well as the voluntary carbon markets. |
| Service | Bulk | Revenues of the project company will be sourced from contracted bulk purchasers of the waste treatment’s by-products. |
| User | ||
| Revenues | Fees | Revenues in this model will be driven by the tariffs paid to the project company for the by-products produced by the waste treatment facility. |
| Tariffs |
Proposed risk allocation of the Public Private Partnership Model

Key features of PPP structure
- Private sector entity to design, build, finance, operate and maintain MSW project via long- term agreement with the ministry/ government or state-owned entity
- The private sector entity acts as the implementation partner, and is responsible for all activities related to the implementation, management, monitoring and reporting of the project over the project crediting period
- In exchange, private sector entity can earn the revenues from the ERCs generated from the project
- The government or state-owned entity benefits from the cost savings from not needing to treat municipal waste
Expected ERC end use
- End use can belong to project developer as part of additional revenue stream
Key considerations/risks for proposed project
- Extensive stakeholder engagement required to ensure buy-in from operators of landfill sites as well as any other relevant stakeholders
- Need to ensure adequate technical local expertise in day-to-day execution to ensure minimal carbon leakage from treatment of MSW
- Stable political environment key to enable smooth execution of MSW project
- Partnering with a service provider for the project’s marketing, sales and pricing is needed to identify potential offset buyers, negotiate contracts, and secure good target price per tonne to enable the financial viability of ERC generation
- Contracting a monitoring, verification and reporting (MRV) service provider with experience in conducting MRV and preparing the necessary documents for generating ERCs in a voluntary carbon market standard will reduce risk of registration and issuance delays or bottlenecks, and strengthen credibility of project’s carbon integrity quality
Figure 1: Financing and Activity Flows for the Model

Case study: Vietstar Municipal Solid Waste Treatment Facility, Vietnam
Project description
The project will reduce methane emissions by establishing and operating composting facilities to treat organic matter collected from municipal waste. The total designed capacity of 432,000 tons of solid waste per year with daily waste reception of 1200 tons and the proposed product of organic compost as 53,568 tons annually.
The proposed project activity involves the pre-sorting, classification of municipal solid waste (MSW), recycling of plastic waste and thermal-aerobic treatment of the organic fraction utilizing LEMNA composting technology. The main purpose of the proposed project is to produce aerobic compost from MSW that would have been left to decay anaerobically in waste landfills.
Targeted results
Expected annual ERCs generated from the program will be 181,492 tonnes.
Figure 2: Structure of Case Study PPP

Vietstar Joint Stock Company, the project owner, operates a Public Private Partnership (PPP) with the Ho Chi Minh Department of Natural Resources and Environment (DONRE) via waste treatment contract signed between the two entities, agreed at $51 per tonne of waste treated.
Summary of the model financials
Assuming a similar project parameter as the case study, the project’s Net Present Value (NPV) without ERC in- and outflows – only considering non-ERC inflows through other revenue streams or cost savings enabled by the project – is $1.18 million (M), while the NPV of ERC in- and outflows alone is $6.68M, reflecting the significant value that generating ERCs from the project will bring. Considering all ERC and non-ERC cashflows, the project’s NPV is $7.87M, approximately 6.5 times of the NPV without ERC cashflows, which demonstrates a strong case for such project archetypes to consider generating ERCs.
Table 2: Summary of sources of inflows and outflows and key assumptions
Value component | Assumptions | Sources |
|---|---|---|
| ERC revenues or inflows |
| Average Gold Standard (GS) price of waste disposal in Asia from Allied Offsets database (2022) |
| Non-ERC revenues or inflows |
| Project Design Document (PDD) of the case study |
| Investment cost |
| PDD of the case study |
| Project implementation |
| PDD of the case study |
| ERC generation |
| Gold Standard Fee Schedule |
Table 3: Net cashflows summary (in USD)
Components | Sum of initial outlays | Sum of in- or outflows from crediting period | Total cashflow |
|---|---|---|---|
| ERC Component | |||
| Revenues/Inflows | 0 | 17,520,105 | 17,520,105 |
| Costs/Outflows | -17,000 | -483,732 | -500,732 |
| Net value | -17,000 | 17,036,373 | 17,019,373 |
| Primary/Non-ERC Component | |||
| Revenues/Inflows | 0 | 74,002,500 | 74,002,500 |
| Costs/Outflows | -36,000,000 | -11,412,500 | -47,412,500 |
| Net value | -36,000,000 | 62,590,000 | 26,590,000 |
| Net Present Values | |||
| NPV | $7,868,052 | ||
| NPV (ERC Component) | $6,683,357 | ||
| NPV (Non-ERC Component) | $1,184,696 | ||
Footnote 1: All prices are expressed in United States Dollars (USD)