Public-private partnerships offer several benefits:

• They provide better infrastructure solutions than an initiative that is wholly public or wholly private. Each participant does what it does best. 
• They result in faster project completions and reduced delays on infrastructure projects by including time-to-completion as a measure of performance and therefore of profit.
• A public-private partnership's return on investment or ROI might be greater than traditional, entirely private or government methods. Innovative design and financing approaches become available when the two entities work together.
• Risks are fully appraised early on to determine project feasibility. In this sense, the private partner can offer a break on unrealistic government promises or expectations. 
• The operational and project execution risks are transferred from the government to the private participant, which usually has more experience in cost containment.  
• Public-private partnerships may include early completion bonuses that further increase efficiency. They can sometimes reduce change order costs as well.
• By increasing the efficiency of the government's investment, it allows government funds to be redirected to other important socioeconomic areas.
• The greater efficiency of P3s reduces government budgets and budget deficits.
• High-quality standards are better obtained and maintained throughout the life cycle of the project.
• Public-private partnerships that reduce costs also allow lower taxes.

  The types of Public Private Partnership Models available are -

Contractual PPPs: In the scope of purely contractual PPP, there are different kinds of arrangements that depend on the characteristics of the contractual relationship and delegation of