Ambika S. Advocate has suggested to add another ground for Divorce that is non consummation of marriage. However it is to be kept in mind that according to Section 12 of The Hindu Marriage Act. a marriage is voidable if it has not been consummated owing to impotence of the respondent. So the petitioner would have to establish that the marriage has not been consummated due to impotence of the respondent which may not be the case. Probably it may be easier to obtain Divorce on the various other grounds available as mentioned in my earlier comment.
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