TABLE VII-SCHEDULED ADDITIONS TO ELECTRIC GENERATING CAPACITY BASED ON SCHEDULED DATES OF COMMERCIAL OPERATION AS OF APRIL 1, 1970 In Terms of Manufacturers' Ratings of the Units

The accompanying Table VIII shows the number and aggregate capacity of thermal generating units in the expansion program (Table VII) divided according to size range. It is significant to note from this tabulation that 118 units totaling 105.2 million kilowatts, or 56.6 percent of all the new thermal gen. erating capacity on order and scheduled for service as of April 1, 1970, are in unit sizes of 700,000 kw and larger.

In sizes of 500,000 kw and larger, the aggregate capacity represents 77.4 percent of the total capacity shown.

Among the units under 100,000 kw, there are 34 steam turbine-generators, one of which is nuclearfired, with an aggregate capacity of 1.4 million kw, 191 gas turbine-generators aggregating 5.5 million kw, and 10 diesel engine-generators, 4,000 kw and larger, totaling 0.1 million kw.

The number and aggregate capacity of new thermal and hydraulic generating units 4,000 kw and larger, placed in commercial operation in the contiguous United States during the years 1960 through 1969, and those now scheduled for operation in 1970 and later years, including those placed in commercial operation during the first three months of 1970, are shown in Fig. 7.

100 0

In 1969, less than 10 percent of the new steam ca-
pacity ordered was nuclear. During the first three
months of 1970 only one nuclear power generating
unit was ordered. It accounted for 11 percent of
steam capacity ordered in this period. As of April 1,
1970, nuclear capacity accounts for 33 percent of
the aggregate of the industry's scheduled expansion
program.

As of the date of this survey, there were 14 nuclear
units in commercial operation and one additional
unit that had reached initial criticality. These 15
units, which have an aggregate capacity of 4.6 mil.
lion kilowatts, are listed in the accompanying tabu-
lation. Two of these units presently are not operating
because of technical difficulties.

During 1970, six nuclear power units are scheduled for commercial operations. These six units have

an aggregate capacity of 3.6 million kilowatts.
As of April 1970, there are 69 additional nuclear
units on order and scheduled for commercial
opera-
tion after 1970 in the contiguous United States,
having an aggregate capacity of 61 million kilowatts.
These units are included in the regional list given
in Appendix I.

In addition to the above participation in nuclear
development, there are several other groups of elec
tric power systems that are supporting conceptual
design studies of fast-breeder reactors. Investor-
owned electric power systems are presently asso-
ciated with 65 of the units scheduled for operation
as listed in Appendix I. Non-Federal government-
owned systems are participating in five of the units,
and the Federal government systems are constructing
five nuclear plants.