State power utility Zesco is seeking to renegotiate its power purchase agreements with independent power producers (IPPs) in an effort to curb its ballooning debt. At end-April 2019, Zesco owed IPPs about $680m, and the company says low power tariffs mean it has little hope of reducing the burden.Zesco sought to raise tariffs in March, but on 3 May, energy minister Matthew Nkhuwa announced that President Edgar Lungu had directed that Zesco’s application for a tariff increase be suspended.