CUSTOMER CONCENTRATIONS	6 Months Ended
Jul. 31, 2018
CUSTOMER CONCENTRATIONS
CUSTOMER CONCENTRATIONS	NOTE 13 — CUSTOMER CONCENTRATIONS The majority of the Company’s consolidated revenues relate to performance by the power industry services segment which provided 77% and 92% of consolidated revenues for the three months ended July 31, 2018 and 2017, respectively, and 82% and 92% of consolidated revenues for the six months ended July 31, 2018 and 2017, respectively. The Company’s most significant customer relationships for the three months ended July 31, 2018 included four power industry service customers which accounted for approximately 18%, 16%, 11% and 10% of consolidated revenues, respectively. The Company’s most significant customer relationships for the three months ended July 31, 2017 included four power industry service customers which accounted for approximately 31%, 27%, 17% and 13% of consolidated revenues, respectively. The Company’s most significant customer relationships for the six months ended July 31, 2018 included three power industry service customers which accounted for approximately 20%, 14% and 13% of consolidated revenues, respectively. The Company’s most significant customer relationships for the six months ended July 31, 2017 included four power industry service customers which accounted for approximately 28%, 26%, 19% and 15% of consolidated revenues, respectively. Amounts retained by three project owners were $14.2 million, $5.0 million and $1.2 million as of July 31, 2018, respectively, which in the aggregate represented 87% of the total customer retention amount of $23.4 million at that date. Amounts retained by five project owners were $19.3 million, $18.7 million, $14.1 million, $13.4 million and $3.2 million as of January 31, 2018, respectively, which in the aggregate represented 99% of the total customer retention amount of $69.7 million at that date. The account balance receivable from two customers represented 19% and 13% of the corresponding condensed consolidated balance as of July 31, 2018. Account balances receivable from two customers each represented 18% of the corresponding consolidated balance as of January 31, 2018.

NOTE 13 — CUSTOMER CONCENTRATIONS

The majority of the Company’s consolidated revenues relate to performance by the power industry services segment which provided 77% and 92% of consolidated revenues for the three months ended July 31, 2018 and 2017, respectively, and 82% and 92% of consolidated revenues for the six months ended July 31, 2018 and 2017, respectively.

The Company’s most significant customer relationships for the three months ended July 31, 2018 included four power industry service customers which accounted for approximately 18%, 16%, 11% and 10% of consolidated revenues, respectively. The Company’s most significant customer relationships for the three months ended July 31, 2017 included four power industry service customers which accounted for approximately 31%, 27%, 17% and 13% of consolidated revenues, respectively. The Company’s most significant customer relationships for the six months ended July 31, 2018 included three power industry service customers which accounted for approximately 20%, 14% and 13% of consolidated revenues, respectively. The Company’s most significant customer relationships for the six months ended July 31, 2017 included four power industry service customers which accounted for approximately 28%, 26%, 19% and 15% of consolidated revenues, respectively.

Amounts retained by three project owners were $14.2 million, $5.0 million and $1.2 million as of July 31, 2018, respectively, which in the aggregate represented 87% of the total customer retention amount of $23.4 million at that date. Amounts retained by five project owners were $19.3 million, $18.7 million, $14.1 million, $13.4 million and $3.2 million as of January 31, 2018, respectively, which in the aggregate represented 99% of the total customer retention amount of $69.7 million at that date. The account balance receivable from two customers represented 19% and 13% of the corresponding condensed consolidated balance as of July 31, 2018. Account balances receivable from two customers each represented 18% of the corresponding consolidated balance as of January 31, 2018.