SALT LAKE CITY (AP) — Authorities say companies in Nevada and Utah are selling solar energy parts for tax breaks in an alleged scheme.

The Justice Department filed a federal complaint Monday to shut down the Utah-based businesses RaPower-3 LLC and International Automated Systems Inc. and Nevada-based LTB1 LLC.

The companies are allegedly selling "solar thermal lenses" through an energy generation facility in Millard County, Utah. Officials said such sales are under the premise that it qualifies customers for tax breaks, including claims for depreciation and business-related expenses and solar energy credits on individual income tax returns, despite that alone not meeting the specific Internal Revenue Code requirements.

At least 70 cases have been filed to Tax Court, which has cost the U.S. Treasury more than $4 million. The companies couldn't be reached for comment.