166398
Red Eléctrica de España ( ) is a partly state-owned and public limited Spanish corporation which operates the national electricity grid in Spain , where it operates the national power transmission system .
 Eléctrica, España, Spain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Eléctrica, España, Spain