The Renewable Energy Independent Power Producer Procurement Programme (REIPPPP or REI4P) is an initiative by the South African government aimed at increasing electricity capacity through private sector investment in solar photovoltaic and concentrated solar, onshore wind power, small hydro (<40 MW), landfill gas, biomass, and biogas. As of 2023, a total of 123 projects have been awarded to the private sector. Private sector investment totalling R256 billion (US$17.32 billion) has been committed to the REIPPPP. Four of the six Bid Windows have come online, totalling 6200 MW of installed capacity (or 5% of South Africa's energy supply).

The programme supports the commitments made by South Africa under the Paris Agreement as of 2018, having contributed to climate change objectives, i.e. the reduction of 22.5 million tonnes of carbon dioxide (CO₂) and saving 26.6 million kilolitres of water.

At the 2011 United Nations Climate Change Conference (COP17) in Durban, the Renewable Energy Independent Power Producer Programme (REIPPP) was introduced to implement the objectives of the Integrated Resource Plan (IRP 2010-2030); of which are to diversify the country's energy mix away from fossil-fired power generation like coal and crude oil, add 30 GW to the grid before 2030, take advantage of opportunities relating to a Green Economy, and in creating new green industries with at least 300 000 jobs.

In 2023, the Development Bank of Southern Africa tendered for the programme to be reviewed in terms of its cost and efficacy.

In 2023, in an affidavit by outgoing Eskom CEO, André De Ruyter said former Eskom CEOs Brian Molefe and Matshela Koko refused to conclude agreements with Renewable Energy Independent Power Producers, thus exacerbating load shedding. It was estimated that up to 96% of load shedding would have been avoided had they not halted the REIPPPP. According to analysts the REIPPPP is two to three years behind schedule. This is due to the programme being halted between 2015 and 2019, the Minister of Mineral Resources and Energy Gwede Mantashe not following the outline of the IRP and the grid network not adequately developed in areas where renewable energy is best harnessed (the Cape Provinces).

Following the Stage 6 load shedding crisis in June 2022, President Ramaphosa announced that Bid Window 6 will double the amount procured from 2,600 MW to 5,200 MW, with 3,200MW allocated for wind and 1000 MW for Solar PV. The National Planning Commission also proposed the 100 MW ceiling of private generation be removed. It said solar and wind power projects can bring online 10 000 MW of capacity within 2–3 years.

Companies are meant to submit competitive tenders and self-fund their projects to be accepted as Preferred Bidders.

As of 2021, Bid Windows 1-4 have 85 out of 92 projects operational, supplying the national grid with 71 073 GWh of renewable energy.