 sakta vanarula siddhaantam antey emti ?  
 vidyut vanarula siddhaantam anede sankshaema rajyala Madhya vyatyaasaalu ekkuvaga aardika tharagatula Madhya vaervaeru adhikaara pampineelaku kaaranamani pratipaadinchae rajakeeya siddhaantam . " karmika sanghalu ledha vamapaksha paarteela dwara samshtha dwara saadhinchabadina sraamika vargha sakta marinta samaanatva pampinhii phalithaalanu utpatthi chesthundu "  ani idi vaadisthundi .

1970 lu mariyu  1980 lalo walter korpi ,  gosta esping - underson mariyu jeanne stephens ‌ lato sannihitamgaa anubandhinchabadina scandinaviaan parisoedhakula paatasaala dwara maargadarshakatvam vahinchabadindi ,  sakta vanarula siddhaantam abhivruddhi chendina paarishraamika deeshalaloo saamaajika vidhanala abhivruddhi ,  lakshanhaalu mariyu prabhaavaalanu pariseelinchadaaniki ooka anubhaavika vidhaanam .  idi vividha deshalu avalambinche saamaajika vidhanaaniki sambamdhinchina vividha vidhanalanu parigananaloki teesukuntundi ,  pradhaanamgaa karmika sameekarana yokka patra mariyu balampai drhushti saaristundi .  dani pradhaana muginpu aemitante ,  sraamika - tharagathi prajalu raajakeeyamgaa vyavastheekrutamgaa unna deeshalaloo saamaajika sankshaema ketayimpulu peddaviga mariyu aadaaya asamaanatalu thakkuvaga unnayi .

 abhivruddhi chendina prajaasvaamya deshaallo sankshaema rajyala Madhya vyatyaasaalanu vivarinchadaaniki  1990 va dasakamlo vidvaamsullo pvr resors siddhaantam prabalamaina udaharanaga marinappatiki , " coverages ,  podiginpu mariyu sankshaema rastrala Madhya daathruthvam "  vento amsaalaku javaabudaareetanam lekapovadanni etthi choope vimarsalu unnayi .  saamaajika vargham aadhaaramga rajakeeya sameekarana yokka praamukhyatanu lekkinchakapovadamtopata .  compititing theorylu kudaa yaajamaanyaala praamukhyata mariyu samanvyaya maarket samajalalo unna crosse - klaas pottulu vento sankshaema abhivruddhi yokka vividha sthaayilaku pratyaamnaaya vivaranhalatoe vidyut vanarula siddhaamtaanni savalu chesaayi .  
 vidyut vanarula siddhaantam anede sankshaema rajyala Madhya vyatyaasaalu ekkuvaga aardika tharagatula Madhya vaervaeru adhikaara pampineelaku kaaranamani pratipaadinchae rajakeeya siddhaantam .  pvr resors siddhaantam  1970 lalo scandinaviaan parisoedhakula paatasaala dwara praarambhinchabadindhi mariyu idi vividha deshalu anusarinchina saamaajika vidhanaaniki sambamdhinchina vividha vidhanalanu lekkinchadaniki prayatnistundi .  