What changed
Tanzania is developing the Malangali power substation in Rukwa to improve local electricity supply and support future exports to Zambia. Built by TBEA at a reported cost of 161.9 billion Tanzanian shillings, the substation will receive electricity at 400 kilovolts before stepping it down for distribution.
Why it matters
Rukwa needs about 30MW but is receiving only 16MW, a gap that has constrained agricultural processing and mineral-related activities. Malangali is meant to close part of that gap while giving Tanzania a stronger position in regional electricity trade.
The timing reflects a bigger shift. Tanzania now has reported installed generation capacity of 4,646MW against peak demand of about 2,271MW, helped by the 2,115MW Julius Nyerere Hydropower Project. But generation is only half the job. Power still needs reliable lines, lower losses and cross-border connections before surplus electricity becomes export income.
The proposed Tanzania–Zambia interconnection could link the Eastern Africa Power Pool with the Southern African Power Pool. That would widen the markets available to Tanzania, but the commercial payoff will depend on transmission capacity, agreements with buyers and how much electricity remains after domestic needs are met.
That domestic claim is substantial. Tanzania aims to raise per-person electricity consumption from about 170 kilowatt-hours to at least 3,000 by 2050. Reducing transmission losses from roughly 16% to below 10% will matter just as much as adding generation: electricity that disappears on the network cannot power a factory, support a mine or cross a border.
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