▁v ibr ations ▁that ▁character ised ▁the ▁operation ▁of ▁this ▁power ▁plant ▁for ▁several ▁gener ations , ▁were ▁perman ently ▁st illed . ▁ ▁Official ly , ▁the ▁Te jo ▁Power ▁Station ▁was ▁shut ▁down ▁and ▁dec lass ified ▁in ▁ 1 9 7 5 . ▁ ▁The ▁Electric ity ▁Museum ▁▁ ▁After ▁national ising ▁the ▁Portuguese ▁electric ity ▁sector ▁in ▁ 1 9 7 5 , ▁the ▁CR GE ' s ▁assets ▁were ▁integrated ▁into ▁the ▁new ▁company ▁established ▁in ▁ 1 9 7 6 , ▁ED P ▁– ▁Electric idade ▁de ▁Portugal , ▁and ▁the ▁question ▁arose ▁regarding ▁what ▁to ▁do ▁with ▁the ▁old ▁Te jo ▁Power ▁Station , ▁where ▁there ▁was ▁still ▁a ▁large ▁amount ▁of ▁mach in ery ▁tied ▁to ▁the ▁impress ive ▁structure . ▁The ▁proposal ▁was ▁clear : ▁re open ▁the ▁space ▁as ▁a ▁science ▁and ▁industrial ▁arch ae ology ▁museum . ▁ ▁In ▁the ▁same ▁year ▁the ▁site ▁was ▁declared ▁an ▁As set ▁of ▁Public ▁Interest , ▁in ▁ 1 9 8 6 , ▁the ▁future ▁Electric ity ▁Museum ' s ▁found ing ▁team ▁got ▁to ▁work , ▁opening ▁its ▁doors ▁to ▁the ▁general ▁public ▁for ▁the ▁first ▁time ▁in ▁ 1 9 9 0 . ▁The ▁Museum ' s ▁permanent ▁exhib its ▁tell ▁the ▁story ▁of ▁the ▁Te jo ▁Power ▁Station ' s ▁process , ▁history ▁and ▁work , ▁as ▁well ▁as ▁relevant ▁aspects ▁in ▁the ▁evolution ▁of ▁electric ▁power ▁production , ▁from ▁the ▁first ▁discover ies ▁to ▁current ▁new ▁forms ▁of ▁producing ▁electric ity