Table 2.

Fourteen experts’ estimates of construction duration in months for each of the single-unit plants

Expert	1,000-MWe Gen III+ LWR plant	45-MWe SMR plant	225-MWe SMR plant
A	72	36	48
B	42	18	24
D	60	42	30
E	60	36	48
F	60	36	36
G	72	36	48
H	48	36	36
I	60	24	30
J	66	54	48
K	54	30	36
L	54	36	36
N	60	24	36
O	48	36	36
P	48	24	36
Mean	57	33	38

Construction duration was defined as the period from the pouring of first safety concrete to plant commissioning and delivery of the first kilowatt-hour. Experts C and M did not respond to this question.