Al Gore is well-known for his close 2000 election loss to George W. Bush and for his evangelism on the issue of global warming. However, the former Vice President has been quietly amassing a fortune in the years since his political career ended.

Bloomberg is reporting that Gore is now ‘Romney rich’, with a net worth that rivals the infamously wealthy 2012 Republican nominee for president, Mitt Romney. Using company filings and tax records, the publication estimates that Gore could be worth more than $200 million. Romney’s net worth is estimated to be close to $250 million.

The 65-year-old Gore’s riches reportedly come from a variety of sources. Just this year, Gore has made around $100 million from selling investments. The Current TV network was sold in January and Gore nabbed around $70 million for his share of the network. He also sold 59,000 shares of Apple stock he has received for serving on the tech company’s board, netting Gore around $30 million.

Sales of his global warming books and movie, An Inconvenient Truth, haven’t added to Gore’s wealth. Profit made by Gore on those products has been donated to the nonprofit Climate Reality Project, which Gore founded in 2010.

Gore’s affluence last came up in 2007, when reports came out that his home in Nashville used significantly more energy than the average American household. Global warming deniers seized on this fact to paint Gore as a hypocrite. In 2010, Gore bought an $8.8 million villa in Montecito, California.

Gore participated in a Reddit AMA late last year, but did not comment on his growing wealth.