Yes, REGENERATED is a Scrabble word!

Letter values in Scrabble US: R 1, E 1, G 2, E 1, N 1, E 1, R 1, A 1, T 1, E 1, D 2.

Is it a valid word?

REGENERATED is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

reestablish on a new, usually improved, basis or make new or like new
amplify (an electron current) by causing part of the power in the output circuit to act upon the input circuit
bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one
return to life; get or give new life or energy
replace (tissue or a body part) through the formation of new tissue
be formed or shaped anew
form or produce anew
undergo regeneration
restore strength