▁growth ▁and ▁modern isation ▁that ▁only ▁ended ▁with ▁the ▁installation ▁of ▁the ▁ 1 5 th ▁and ▁final ▁bo iler ▁in ▁ 1 9 5 1 . ▁ ▁Gener ally ▁speaking , ▁there ▁were ▁two ▁main ▁construction ▁periods : ▁ ▁The ▁first , ▁from ▁ 1 9 1 4 ▁to ▁ 1 9 3 0 , ▁involved ▁the ▁Low ▁Press ure ▁facility ▁and ▁consisted ▁of ▁building ▁and ▁expand ing ▁the ▁low ▁pressure ▁bo iler ▁room ▁and ▁the ▁mach in ery ▁room . ▁ ▁The ▁second ▁took ▁place ▁between ▁ 1 9 3 8 ▁and ▁ 1 9 5 1 , ▁and ▁involved ▁setting ▁up ▁High ▁Press ure ▁production . ▁From ▁the ▁end ▁of ▁this ▁period ▁to ▁this ▁day , ▁the ▁architect ural ▁ensemble ▁has ▁remained ▁un alter ed , ▁with ▁the ▁high ▁pressure ▁bo iler ▁building ▁standing ▁out ▁from ▁the ▁rest ▁of ▁the ▁complex . ▁ ▁Low ▁Press ure ▁ ▁With ▁the ▁construction ▁of ▁the ▁low ▁pressure ▁bo iler ▁building ▁and ▁the ▁new ▁mach in ery ▁room , ▁the ▁Te jo ▁Power ▁Station ▁began ▁to ▁cons olid ate ▁itself ▁both ▁in ▁terms ▁of ▁production ▁and ▁on ▁an ▁architect ural ▁level , ▁with ▁the ▁use ▁of ▁brick ▁on ▁the ▁visible ▁fac ades ▁of ▁the ▁entire ▁industrial ▁complex . ▁ ▁Once ▁again , ▁it ▁is ▁possible ▁to ▁separate ▁this ▁low ▁pressure ▁period ▁into ▁three ▁construction ▁phases : ▁ ▁The ▁first , ▁from ▁ 1 9 1 4 ▁to ▁ 1 9 2 1 , ▁included ▁beginning ▁construction ▁of ▁the ▁bo iler ▁building , ▁the ▁coal