In a large saucepan, heat butter over medium-high heat; saute carrot, celery and onion until tender, 3-5 minutes. Stir in rice until coated., Stir in water, soy sauce, sugar and seasonings; bring to a boil. Reduce heat; simmer, covered, until liquid is absorbed and rice is tender, about 15 minutes., Gently stir in peas. Cover and heat through.