Tanesco Managing Director, William Mhando

It states that Tanzania’s power demand by 2038 is expected to increase to 7000MW.

During the period, the supply of power in the country is likely to continue to be primarily from hydroelectricity with continued significant thermal reserve input, it says.

Titled ‘Wind Resource Intermittency and the Requirement of Balancing Demand versus Generation: Challenges and Good Practices for Reliable Wind Electricity Generation and Supply’, the study was conducted by the UK firm in November last year.

It says that wind power generators can perfectly complement the present hydroelectricity dominated grid during dry season.

Recent statistics by the state power utlity, Tanesco, show that Tanzania’s current power generation stands at 718MW while the demand is estimated at around 600MW and 829MW per day.

It suggests that in order to cope up with the challenges related to wind power, it is vital for the country to set up projects in areas with good wind resource and ensure proper management of overall risks of grid imbalances by maintaining sufficient reserve power besides installing modern wind turbines with grid balancing mechanisms.

It says that to ensure highest levels of reliability, development of wind chart should be done carefully and the sitting of wind farms should be in high wind speed areas and close to demand centres.

According to the report, interconnection of wind farms within the country in the near term and in collaboration with other EAC partner states in the longer term will increase the size of the catchments area, help smooth power fluctuations and improve supply reliability.

The commercially viable places recommended for wind power generation are coastal and rift valley areas whereby Singida Region is mentioned to as one of the best sources for wind energy generation.

The report mentions some of the potential wind energy projects to be considered as Wind East Africa earmarked to produce 50MW and Good PM Group expected to generate 210MW in Singida Region.

“Other African nations are increasingly looking to wind power for future generation capacity including Kenya and Ethiopia,” the study says.

It underlines that wind power can reduce dependence on individual energy sources, and that diverse blend of power sources on the national grid would strengthen grid security.

A study done by Danida and Tanesco shows that wind energy installation costs are between USD7 and 9 cents per kilowatt hour.

Addressing the media recently, Tanesco managing director William Mhando said the current power production is as follows: Kihansi dam 100MW, Kidatu 160MW, Mtera 40MW, Pangani 15MW, Hale 5MW and Nyumba ya Mungu 2.6MW.

Energy produced by other sources was as follows: Songas 142MW, Ubungo gas plant 102MW, Independent Power Tanzania Limited (IPTL) 60MW, Tegeta gas plant 42MW and Symbion 60MW, he said.

He said the country’s power production capacity when all the sources are functioning well stands at 1, 272MW.

By David Kisanga, The Guardian


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