The Interior Department inspector general issued a report June 12 arguing that the Bureau of Land Management could improve its renewable energy program by more efficiently collecting rental fees on land it manages, clarifying bond guidance, and implementing a competitive bidding process on projects. The bureau lost $1.2 million in rental revenue on 22 wind projects because rental rates never rose, and the report urged it to look into retroactive rent rises. Furthermore, 14 wind projects were insufficiently bonded by the bureau, totaling $8.5 million in lost revenue. The report made nine recommendations and the agency fully-concurred with eight and partially concurred with the other. The bureau has 29 of 31 authorized wind projects in operation and five of nine solar projects under construction, with the potential for 20.6 and 20 million acres of wind and solar development, respectively.