Impacts of New Electric Line Extensions in Tanzania (In Focus Brief)

Publisher: Washington, DC: Mathematica Policy Research
Mar 29, 2017
Kristine Bos, Duncan Chaplin, Arif Mamun, Ali Protik, John Schurrer, and Divya Vohra

The line extensions led to:

  • A large number of new connections, though less than one-third of the number assumed.
  • Increased consumption of grid electricity, ownership of electric tools, operation of income generating activities using grid electricity, time spent watching television, and perceived safety.
  • Increased percentages of communities with an electrified school and electrified businesses.
  • No clear changes in pollution, health, income, or consumption.

The Millennium Challenge Corporation’s energy-sector project was designed to promote economic growth and curb poverty in Tanzania. Mathematica conducted an evaluation of two project components: impacts of building new lines to the electricity grid and outcomes from offering low-cost-connections to households in a subset of communities. This brief summarizes the impacts of creating new electric line extensions in Tanzania.


Tanzania Energy-Sector Impact Evaluation


Millennium Challenge Corporation

Time Frame


Senior Staff

John Schurrer
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Arif Mamun
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Divya Vohra
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Duncan Chaplin
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