Transkei Electric Supply

As I had mentioned in an earlier post on this blog, The Transkei (meaning the area beyond [the river] Kei), was officially the Republic of Transkei (Xhosa: iRiphabliki yeTranskei), was in Bantustan—an area set aside for members of a specific ethnicity—and nominal parliamentary democracy in the south eastern region of South Africa. Its capital was Umtata (renamed Mthatha in 2004).

Transkei represented a significant precedent and historic turning point in South Africa's policy of apartheid and "separate development"; it was the first of four territories to be declared independent of South Africa. Throughout its existence, it remained an internationally unrecognised, diplomatically isolated, politically unstable de facto one-party state, which at one point broke relations with South Africa, the only country that acknowledged it as a legal entity. In 1994, it was reintegrated into its larger neighbour and became part of the Eastern Cape province.
The Transkei government was a participant in the Codesa negotiations for a new South Africa. The territory was reincorporated into South Africa on 27 April 1994, and the area became part of the Eastern Cape province.

These four stamps and the first day cover were issued by Transkei to commemorate the Transkei Rlectricity Supply Corporation, and were issued on 24.7.1986. The stamps show the Hydro-electric power stations in Transkei in 1986. 

A short brief on these stamps:

14c & 20c stamps show the Mthatha River or Umtata River located in the Eastern Cape Province in South Africa. The river flows into the Indian Ocean in an estuary located at Coffee Bay. The Mthatha river flows in a southeastern direction and is approximately 250 km long with a catchment area of 2,600 km². It is named after Mthatha Town (Umtata). The hydro electric supply is from the Mthatha Dam an earth-fill type dam located on the Mthatha River. It was established in 1977 and serves mainly for municipal and industrial purposes. Its hazard potential has been ranked high.

25c stamp is about the Ncora Hydroelectric Power Station located at Eastern Cape. Ncora Dam is a gravity type dam located on the Tsomo River, near Tsomo, Eastern Cape, South Africa. It was established in 1972 and serves mainly for irrigation purposes. The hazard potential of the dam has been ranked high

30c stamp shows the Collywobbles Hydroelectric Power Station located at Eastern Cape.

Thank you Maria.