Nudging the Private Sector to address Waste Management


In Honiara, where approximately 85,000 inhabitants live, 80 tonnes of solid waste is generated per day (2017) and a significant amount of the waste ends up in the city's drainage systems. The drains are often clogged by the waste and consequently, this makes the city more prone to flooding and damage on the infrastructure. As it is projected that the amount of waste will increase along with the population increase and the local government has limited capacity to address waste management alone, UNDP has been carrying out an innovation initiative, supported by UNDP Innovation Facility, to test behavioural insights informed interventions to assist Solomon Islands Government to deal with the challenging solid waste management. The overall goal of the initiative is to support the government to implement the National Waste Management and Pollution Control Strategy 2017-2026, which goes in line with UNDP's Subregional Programme Document for the Pacific Island Countries and Territories 2018-2022. 


The objective is to influence people to reduce the amount of waste generated, and it focuses on single-use plastics such as cups, styrofoam packs, cutlery, etc. from schools in Honiara. The initiative is being designed with the key stakeholders to test a carefully designed behavioural-insightsinformed intervention and achieving desired test results. Concrete data/results gained from the test will be analysed and these are expected to be used for scaling up to support government to implement the National Waste Management and Pollution Control Strategy 2017-2026 at a larger scale. The initiative aims to:

  1. Encourage better waste management behaviours by inhabitants of Honiara. The initiative is designed to improve Solomon Islanders' behaviour in relation to single-use plastic. As there are significant infrastructural barriers to waste management at present in the Solomon Islands, the project will focus on reducing plastic waste generated in schools that will lead to lessening of the burden of waste management by the government. 
  2. Contribute to the regional and global evidence base on encouraging people to refuse, reduce, re-use, and/or recycle single-use plastics. The problem of the management of single-use plastic, particularly in island and developing nations, is growing rapidly. There is a need for rigorous evaluation in this field to help understand how best to address this problem through behavioural interventions so that the findings can be applied more broadly on a larger contexts and resource mobilisation.



Project start date:

July 2019

Estimated end date:

December 2019

Focus area:

  • eradicate poverty in all its forms and dimensions
  • Project office:

    UNDP in Solomon Islands

    Implementing partner:

    United Nations Development Programme

    Full project information  

    Funding Support by

    Donor name

  • United Nations Development Pro
  • Amount contributed


    Delivery in previous fiscal year

    2019 $28,186

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