altern ators ▁or ▁the ▁expansion ▁of ▁the ▁bo iler ▁room , ▁which ▁involved ▁building ▁a ▁new ▁ 3 6 ▁meter - high ▁chim ney ▁in ▁the ▁shape ▁of ▁an ▁invert ed ▁py ram idal ▁stem . ▁ ▁From ▁its ▁construction ▁up ▁to ▁ 1 9 1 2 , ▁the ▁Jun que ira ▁Power ▁Station ▁acquired ▁new ▁mach in ery ▁to ▁increase ▁its ▁production . ▁In ▁ 1 9 0 8 ▁it ▁started ▁off ▁with ▁two ▁altern ators ▁from ▁the ▁Bo av ista ▁Power ▁Station , ▁each ▁with ▁a ▁ 1 ▁M W ▁output , ▁and ▁six ▁D ela un ay ▁– ▁Belle ville ▁bo ilers . ▁The ▁ 1 9 1 0 ▁expansion ▁involved ▁the ▁installation ▁of ▁three ▁new ▁Brown ▁B over i ▁& ▁C ª . ▁tur bo - altern ators ▁that ▁raised ▁the ▁total ▁output ▁to ▁ 7 . 7 5 ▁M W , ▁as ▁well ▁as ▁four ▁bo ilers ▁at ▁a ▁first ▁stage , ▁later ▁joined ▁by ▁five ▁more ▁bo ilers ▁with ▁greater ▁v apor isation ▁capacity . ▁Thus , ▁in ▁ 1 9 1 2 , ▁when ▁all ▁this ▁equipment ▁was ▁in ▁place , ▁the ▁original ▁Te jo ▁Power ▁Station ▁had ▁fifteen ▁small ▁Belle ville ▁bo ilers ▁and ▁five ▁generating ▁sets ▁that ▁supplied ▁the ▁city ▁of ▁Lis bon ' s ▁electric ▁grid . ▁ ▁Regarding ▁the ▁exterior , ▁the ▁building ▁that ▁accommod ated ▁this ▁extensive ▁set ▁of ▁mach in ery ▁displayed ▁an ▁architect ural ▁style ▁typical ▁of ▁the ▁small ▁power ▁stations ▁at ▁the ▁end ▁of ▁the ▁ 1 9