adjustments will be implemented on a quarterly basis):
1980
2.00 cents per unit
1981
2,50 cents per unit
1982
1.00 cents per unit
1983
2.50 cents per unit
The company last increased its tariffs in April 1974 by 1.00 cent per unit. The effect of these adjustments for the period up to 1933 is set
out in Table IV below.
Tariffs (year end
Table IV
figures in cents
per unit)
1978
1979
1980
1981
1982
1983
Total of previous
20.86
21.81
22.32
24.97
28.06 29.06
year's tariff
Basic Rate
1.95
2.36 0.91
2.44
increase (1) *
Fuel Clause
0.95
0.51
0.70
0.73
0.09
0.36
increase (2) *
21.81
22.32 24.97 28.06 29.06 31.86
Table V
Without Fuel Clause
% increase over
previous year
Average increase
(cumulative) With Fuel Clause
1
9.3% 10.3% 3.6% 9.3%
-
3.1% 5.2% 5.0% 6.1%
% increase over previous year Average increase
(cumulative)
4.5%
2.3% 11.2% 12.4%
3.6% 9.6%
4.5% 3.5% 6.6%
8.6% 7.9%
8.8%
Notes
(1)
The basic rate increases have been netted down to allow for adjustments for economies of scale and also the rate reduction rebates arising from the interest on the Development Fund.
*(2) The estimated fuel clause increases are based on an estimated
fuel oil cost of $412 per ton for 1978 and a 5% increase per annum thereafter. Coal is estimated to be half the price of fuel oil per ton but to give two thirds of the heat value of oil and this explains why the fuel clause adjustment is relatively low in 1982, when coal is expected to be introduced for the new 350 mw sets,
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