King William's Town and Alice Power Stations

OVERVIEW

ESCOM purchased King William’s Town Power Station from the Municipality in January 1948. There were then two radial-flow turbo-alternators each rated at 1,5 MW and one 0,5 MW alternator driven by a reciprocating engine. ESCOM installed an additional boiler in 1949 and a new 1 MW diesel generator in 1950. When ESCOM built West Bank 2 Power Station, a 66 kV line was constructed from East London to King William’s Town, and from the end of 1956 the King William’s Town Power Station was kept available on standby for line outages and emergencies only. The 0,5 MW set was disposed of in 1964 and the diesel generator sold in 1966. The power station was completely decommissioned at the end of 1973 when the Border Undertaking was linked up with the National 400 kV system.

Alice Power Station was a diesel station having four small DC generators and one AC generator when taken over by ESCOM in April 1948. ESCOM subsequently installed two new 0,23 MW ac diesel generators and decommissioned all the old sets. A 33 kV line between King William’s Town and Alice was commissioned in August 1953, and the generating plant decommissioned in 1954. The Alice Power Station should not be confused with the Alice Street Power Station built by the Durban Municipality and started up in 1902.

King William’s Town is situated inland 54 km northwest of East London at an altitude of 394 metres. It was founded as a missionary station in 1825, and in 1835 was named in honour of the British King William IV. It became a centre for German settlement and was elevated to the status of borough in 1861. It had a population of about 15 000 in 1970.

 

Alice is situated further inland at about 140 km by rail northwest of East London at an altitude of 524 metres and also began as a missionary station in 1824. It was named after Princess Alice, second daughter of Queen Victoria, and became a municipality in 1852. It had a population of about 3 500 in 1960.

 

Alice Power Station

KING WILLIAM’S TOWN POWER STATION

The original electric generating station at King William’s Town was erected by the King Electric Power Company. The supply of current was commenced on 23 October 1903 and the works were formally opened on 20 November 1903. Power was supplied for public street lighting and a few private consumers. Street lighting in the town had previously been by means of oil-burning lamps. The plant consisted of two Belliss/Electric Construction Co sets with Davey Paxman boilers, having a total capacity of 100 kW. In January 1905 the Town Council decided to take over the assets of the King Electric Power Co. The installation of additional plant was in hand the following year. (Minutes of the Council 10 Nov 1903 [National Archives Ref 3KWT 1/1/1/15:416, 423, 432]; The Electrician 4 Dec 1903:267, 25 Dec 1903:388, 11 Nov 1904:155, 13 Jan 1905:523; Electrical Review 1 June 1906:903)
The power station at King William’s Town was flooded to a depth of 3 feet [900 mm] during the floods of October 1905, most of the machinery being under water, and the town was without lights for several days as a result. (Daily Dispatch 12 October 1905). In 1918, the installed plant capacity was 0,2 MW and the electricity sold that year was 0,352 GWh (Merz and McLellan 1920:37).
Tenders were received in August 1924 for plant to be installed in a new power station. The tender from Reunert and Lenz was accepted for steam raising plant and two generators. The new power station was to be erected at the corner of Napier and Darling Streets, and the Prime Minister consented to lay the foundation stone at a ceremony on 2 September 1925. By September 1926 the power station was complete and in full working order. The old plant was sold. (Minutes of the Council [National Archives Ref 3KWT 1/1/1/22:20, 47, 156, 217, 289,307)
In March 1930 the Town Council proposed the installation of additional generating plant and in January 1931 tenders were accepted for two Brush Ljungström radial-flow turbo-alternators each rated at 1,5 MW. The inauguration of the new plant took place in March 1932. (Minutes of the Council 1930-32 [National Archives Ref 3KWT 1/1/1/23:256, 270, 279, 332, 342, 378, 456])
At the end of World War II (1939 to 1945), the power supply industry in South Africa was severely handicapped by the shortage of generating capacity and distribution equipment. With the return to normal commercial and industrial conditions, there was a huge upsurge in electricity requirements throughout the country. In 1946 the Municipality of East London requested ESCOM to take over ownership and operation of the West Bank Power Station, and to supply the Municipality in bulk. A number of other municipalities also approached ESCOM for supplies. ESCOM then established the Border Undertaking, which would be developed to cope with the electricity demands over an area extending to a radius of approximately 200 km from the power station at East London.ESCOM purchased West Bank Power Station from the Municipality and assumed ownership from 1 January 1947. (ESCOM Annual Reports 1945:6; 1946:6; 1947:7&53; ESCOM Twenty-five Years 1923-1948:29&30).
In January 1948, ESCOM purchased the King William’s Town Municipal Undertaking. In April 1948, the Administrator of the Cape Province also approved the acquisition by ESCOM of the Alice Municipal Electricity Undertaking. However, the available generating capacity in the newly established Border Undertaking was insufficient to meet the anticipated demand and additions to all three stations were planned. At both King William’s Town and at Alice, the majority of the former municipal employees elected to transfer to ESCOM’s service when the electricity undertakings were taken over. (ESCOM Annual Reports 1946:6, 1947:7; 1948:39&41; 1949:9&27).
At King William’s Town Power Station, the plant taken over by ESCOM consisted of:

Boilers: B&W 1 – 10 000 lb./h [1,26 kg/s] 2 – 12 000 lb./h [1,51 kg/s]
Steam Outlet: 200 lb./sq.in. [1,48 MPa (abs)] 530 °F [277 °C]
Generators: Brush 2 – 1,5 MW (radial-flow turbo-alternators) 3,8 kV
B&M 1 – 0,5 MW (triple expansion)

(ESCOM Twenty-five Years 1923 to 1948:48 and ESCOM Annual Report 1948:96)

When ESCOM took the power station over the following improvements were made:

The boiler house was extended and an additional 12 000 lb./h [1,51 kg/s] boiler installed and commissioned in May 1949.
A new workshop and stores building were constructed, and new offices purchased.
New switchgear and step-up transformers were installed, and operation changed over from 3,8 kV to 11 kV.
A new 1 MW diesel generator was installed and commissioned in March 1950, generating at 11 kV. (ESCOM Annual Reports 1949:37; 1950:96).
A 66 kV interconnector was built between East London and King William’s Town. West Bank 2 Power Station first generated power on 26 April 1956 and from 13 June 1956 King William’s Town Power Station was retained as a peak load station. Steam supplies from the station to two industrial consumers were discontinued as a consequence. From July 1956 there were two 15 MW generators and two boilers in service at West Bank 2. By the end of 1956 West Bank was supplying the whole of the Border Undertaking’s requirements. King William’s Town Power Station was kept available on standby for line outages and emergencies, the diesel generator being run regularly for trial purposes. In 1959 all boilers were emptied and dried out. The diesel generator was run for trial and a few occasions when abnormal conditions arose at West Bank. The steam plant was also used on one occasion due to a boiler outage at West Bank, and again on two occasions in 1961 to enable essential work to be carried out on the 66 kV line. The steam plant was used for two periods in August 1963 during installation of transformers at Gately Substation. In 1964 the 0,5 MW Belliss and Morcom reciprocating engine was disposed of. The steam plant was in operation for a short period in February 1966 for work on the 66 kV line and also in June when a generator at West Bank was out of service. In April 1966, the diesel generator was dismantled and sold. (ESCOM Annual Reports 1956:9,33,35&104; 1958:30; 1959:33; 1960:31; 1961:33; 1962:41; 1963:44; 1964:32; 1966:33)

Operating statistics for King William’s Town Power Station are as follows:

      *Steam plant and diesel plant in parallel (½ hour basis)
     **Steam plant only
   ***Excluding coal burnt for steam supplies to two industrial consumers (between 100 and 220 tons)

Year Steam Plant Generation Ghw Diesel Plant Generation Ghw Net Max Power MW Load Factor(Net Basis %) Thermal Effeciency (Net Basis%) Coal Consumed Metric Calorific Value of Coal Cost of Coal R/ton
1948
6459
_
1984
37,3
12,25
6277
30,28
3,06
1949
7852
-
2600
34,5
12,23
7507
30,80
3,25
1950
8,078
0,018
2384
38,7
12,84
7384
30,66
3,49
1951
8376
0,105
2606
37,1
13,18
7450
30,45
3,65
1952
9036
0,087
2636
39,4
13,27
8282
29,59
4,10
1953
10008
0,026
2930
39,1
13,28
9136
29,69
4,38
1954
12501
0,086
3618
39,7
13,29
11448
29,70
4,67
1955
13908
0,122
3780
42,4
13,39
13101
29,19
5,03
1956
7849
0,070
3940
37,8
12,6
7702
29,28
5,16
1957
0,084
0,013
2900
_
11,7
89
29,49
5,34

On 1 January 1971, the Municipality purchased the King William’s Town reticulation system from ESCOM and supply was taken in bulk. The power station was completely decommissioned at the end of 1973 when the Border Undertaking was linked up with the national 400 kV system. (ESCOM Annual Reports 1971:97; 1973:95)

Two 1,5 MW Ljungström radial-flow turbo-alternators installed at King William's Town Power Station in 1931-32

ALICE POWER STATION

At a public meeting held on 9 August 1918 the proposal of the Alice Town Council to light the town by electricity was “carried almost unanimously”. Street lighting was at that time by means of oil lamps. However, when World War I was over, the Administrator of the Cape “was very adverse to municipalities going in for any schemes” due to the financial situation. By June 1919 the matter was again raised, but shelved a second time because of uncertainty in prices and the market conditions. An amended scheme was proposed in November 1919 whereby a feeder would be constructed and Lovedale offered power and light as well. Although the capital costs would be double, the revenue would also be almost double. Alice would take over the existing plant at Lovedale including the engine and gas plant. This proposal was carried unanimously at a public meeting on 3 December 1919 and approved by the Administrator. There were objections to the site chosen for the power station at Alice but approval was given at a public meeting on 22 February 1920. By March 1921 the plant had been installed and Mr Chalmers, the Electrical Engineer, was congratulated for the efficient manner in which he had conducted the installation. In June 1922 there were two dynamos of 40 kW each but the engines were effective for only 32 kW each. Additional plant was proposed. (Minutes of the Council 1918-1921; Minutes of the Electrical Committee 1921 [National Archives Ref 3ALC 1/1/1/11:24-339; 3ALC 1/2/2/1/1:46-76])

At the Alice Power Station, the plant taken over by ESCOM consisted of the following:
Diesel generators: 1 – 40 kW 2 – 63 kW 1 – 90 kW 440/220 V DC
1 – 125 kW 3,3 kV AC(ESCOM Annual Report 1948:98)

When ESCOM took over the Alice Power Station it was decided to augment the plant by installing a new 440 V 230 kW AC generator. New 3,3 kV switchgear and step-up transformers were ordered in anticipation of changeover from DC to AC. The building was renovated and two of the old DC generators removed to make room. A second 400 V 230 kW AC generator was installed in 1951, enabling the 125 kW set to be removed for repairs. During October 1952, the change over of consumer supplies and street lighting to AC was completed. A 33 kV transmission line between King William’s Town and Alice was commissioned in August 1953, and continuous working of the station was ceased. The generating plant was decommissioned in 1954 and sold. (ESCOM Annual Reports 1948:41; 1949:37; 1950:96; 1951:39&88; 1952:33&88; 1953:33; 1954:34&35; 1955:37)

Operating statistics for Alice Power Station are as follows:

Year Net Generation Ghw Net Max Power (1/2 hour) Mw Load Factor (Net basis) % Diesel Oil Consumed tonMetric Cost of Fuel R/metric ton Fuel Consumption kg/Kwh (net)
1948
0,554
0,172
36,7
214,184
Not Available
0,386
1949
0,537
0,187
32,8
226,549
28,08
0,422
1950
0,584
0,197
33,8
227,477
34,06
0,390
1951
0,675
0,199
38,7
252,284
40,33
0,374
1952
0,706
0,192
41,9
260,626
Not Available
0,369
1953
0,443
0,201
25,2
153,902
Not Available
0,347
1954
0,004
1,937

BIBLIOGRAPHY

This information on the power stations was produced by Stephen Leech and Dick Fowler, a retired Eskom employee.

Daily Dispatch – 12 October 1905

1.ESCOM Annual Reports – 1947 to 1966

2.ESCOM: Twenty-five Years – A record of the origin, progress and achievements of the Electricity Supply Commission, 1923-1948

3.Merz and McLellan 1920 – Electric Power Supply in the Union of South Africa

4.The New Encyclopaedia Britannica

5.The Standard Encyclopaedia of Southern Africa

6.The Electrician 1903-1904

7.Original Minutes of the King William’s Town Council 1903-1904, 1922-1928 and 1931-1932 [National Archives Ref 3KWT 1/1/1/15, 22&23]

8.Original Minutes of the Alice Town Council 1918-1921 and the Electrical Committee 1921 [National Archives Ref 3ALC 1/1/1/11 and 3ALC 1/2/2/1/1]

9.E Poole, In: Eighty Years – The History of the Association of Municipal Electricity Undertakings (Southern Africa)