Partners Group Holding AG is bringing in Gordon Brown to advise the Swiss private equity firm on so-called impact investments, The Wall Street Journal reported.

Brown was prime minister of the U.K. from 2007 to 2010 and is also an adviser to asset manager Pacific Investment Management Co. LLC.

Partners Group defines and measures impact investments as those that meet the United Nations' 17 sustainable development goals, which include poverty elimination and better access to education, healthcare and renewable energy. The firm expects to invest $30 trillion by 2030 to meet such goals, the publication noted, citing an emailed statement from the firm.

Partners Group said in the statement that fees will be paid to the manager of the former prime minister's nonprofit activities, the Office of Gordon and Sarah Brown, according to the publication.