
Global OTEC’s flagship project is the “Dominque,” a floating 1.5-MW OTEC platform set to be installed in São Tomé and Príncipe in 2025 (Figure 1). The company says the platform “will be the first commercial-scale OTEC system.” That’s significant because OTEC is a technology that was proposed as far back as 1881 by French. . Existing prototypes have typically conformed to three basic configurations depending on their location: on land, relatively a short distance. . MOL lauded OTEC’s potential as a baseload power resource that is “not greatly affected by weather conditions.” Another noted benefit is. . Global OTEC acknowledged, however, that launching its first commercial project, the Dominique, will require trailblazing a deployment pathway that. [pdf]

Tanzania has a large untapped potential. Of the country's total generation capacity, close to 80% of Tanzania electricity comes from renewable energy, with natural gas contributing 892.72MW and Hydro electric power 573.70MW of the total 1,601.84 megawatts, as of April 2020. According to the government of Tanzania, generation projects in the pipeline include: (a) Ruhudji (358MW), Kakono (87MW), Rumakali (222MW), Malagarasi (45MW), Kikon. [pdf]
Tanzania's hydro power capacity is 562 MW. Estimates of potential capacity are as high as 4.7 GW. Most of the hydro power in Tanzania comes from rivers. There are planned large hydro projects, including Ruhudji (360 MW), Rumakali (22 MW), and Stieglers Gorge (2,100 MW).
There are nine thermal power plants in Tanzania: Ubungo I and II, Tegeta, Songas, Mtwara, Somanga, Kinyerezi I and II, and Dangote. Nine thermal power plants in Tanzania convert natural gas to electricity, with a total production per year of approximately 650 MW. The Songas Project currently produces around 200 MW of electricity using natural gas.
In rural areas, households connected to electricity accounted for 24.5% in 2019/20 compared to 16.9% in 2016/17. Therefore, the Government of Tanzania plans to increase rural connection levels to 50% by 2025 and at least 75% by 2033.
Tanzania Electric Supply Company (TANESCO) is the country’s principal electricity generator, transmitter, and distributor. It is a vertically integrated utility owned by the Government of Tanzania.

The first historical landmark in the establishment of electric supply dates back from 1928, when Law 113 declared the exploitation of hydroelectric power of public interest. The system worked in a centralized manner, in which vertically integrated state companies maintained a monopoly in their corresponding regions. A public company, ISA, exchanged electricity among the different regional systems. [pdf]
Colombia’s power system is characterised by large installed capacity for hydropower (70% of total capacity), mostly from plants with significant reservoir capacity. VRE generation capacity, below 1% in 2017, would reach 17% by 2030 under the revised energy plan (UPME, 2018). Additional biomass power by 2030 would account for 3% of capacity.
The Inter-American Development Bank has currently one energy project under implementation in Colombia, the Porce III Hydroelectric Power Plant, owned by Empresas Públicas de Medellín and approved in October 2005. This is a US$900 million project, of which the IDB is contributing US$200 million.
In 2030 the VRE installed capacity will grow to 17%; however, Colombia will still have enough flexibility – even in dry years with limited hydropower generation – thanks to plans to greatly expand transmission capacity and to add another 2.4 GW of hydropower capacity (Ituango project) on top of the large hydro resources already in the system.
Colombia is a net power exporter. In 2005 the country exported 1.76 TWh of electricity to Ecuador (3.5% of total production). It imported only very small volumes of electricity from Venezuela and Ecuador (0.02 TWh each). According to the Ministry of Mines and Energy, exports are estimated to increase at 5 percent annually.
Figure 1 - Installed capacity by source [2021 to 2026] (source: XM S.A. E.S.P) The ongoing energy transition in Colombia is marked by three main developments: (1) the massive integration of Inverter-Based Resources (IBRs) and distributed energy resources, (2) advanced metering infrastructure deployment and (3) demand-side programs.
An interesting characteristic of the Colombian electricity sector (as well as of its water sector) is a system of cross-subsidies from users living in areas considered relatively affluent and from users consuming higher amounts of electricity to those living in areas considered poor and to those who use less electricity.
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