The OPPPI is a unit in the Ministry of Energy whose role is to promote private sector involvement in the development of power projects in Zambia. 

In its undertakings, the OPPPI identifies projects; conducts feasibility studies; develops an appropriate solicitation strategy and documents for developers; procures developers and facilitates negotiations for Implementation Agreements on behalf of the Government.

To ensure a harmonised development of projects, the OPPPI closely co-ordinates with other institutions such as Zambia Development Agency (ZDA), ZESCO, Energy Regulation Board (ERB), Water Resources Management Authority (WARMA), National Heritage Conservation Commission (NHCC), Rural Electrification Authority (REA), Zambia Environmental and Management Authority (ZEMA), Zambia Public Procurement Authority (ZPPA) and the relevant Local Authorities.