Mark Sullivan, a Texas-based inventor and MENSA member, appeared on Shark Tank Season 3, Episode 11, to pitch the Sullivan Generator-a conceptual device that claimed to generate electricity by harnessing the Earth’s spin (the Coriolis Effect) and produce valuable by-products like gold and manganese. Sullivan sought $1 million for 10% equity, valuing his idea at $10 million.
| Company Name | Sullivan Generator | |
| Founder/Co-Founder | Mark Sullivan | |
| Founded | 2010 | |
| Product | Conceptual generator using Coriolis Effect to generate electricity and gold | |
| Asked For | $1 million for 10% equity | |
| Final Deal | No Deal | |
| Shark | No Shark | |
| Episode | S3 E11 | |
| Air Date | April 13, 2012 | |
| Business Status | Out of Business | |
| Website | Visit Website | |
| Headquarters | California, United States | |
| Annual (Revenue) | Over $0 million | |
| Worth / Valuation | $10 million | |
| Buy and Watch | Buy Now | Amazon Prime |
Business Pitch Episode Recap
Mark Sullivan presented a highly ambitious vision: a generator that would use the Coriolis Effect to spin saltwater into vapor, producing electricity and yielding gold as a by-product
. He claimed that deploying 200 such generators could revolutionize global energy and generate up to $97 billion in gold. The pitch included bold scientific claims but lacked a working prototype or commercial validation.
The sharks were intrigued by the audacity of the idea but skeptical about its feasibility. Mark Cuban and Daymond John quickly bowed out, citing doubts about the science and timeline. Robert Herjavec showed brief interest but ultimately passed, as did Kevin O’Leary and Barbara Corcoran, leaving Sullivan without any offers.
Sharks Offers List
| Sharks | Offers |
|---|---|
| Mark Cuban | No Offer |
| Daymond John | No Offer |
| Robert Herjavec | Considered, but no offer |
| Kevin O’Leary | No Offer |
| Barbara Corcoran | No Offer |
| Founder’s Counter | No Counter |
| Final Deals | No Deal |
Sullivan Generator Shark Tank Update
After the show, the Sullivan Generator did not progress beyond the conceptual stage. No prototype was developed, no investment was secured, and there have been no significant updates or commercial developments since the episode aired.
The idea remains unrealized, and Mark Sullivan has not pursued public demonstrations or further funding for the project.
What is Sullivan Generator’s Net Worth?
At the time of the Shark Tank pitch, the Sullivan Generator’s net worth was based solely on Sullivan’s self-assigned valuation of $10 million ($1 million for 10% equity).
With no product, sales, or prototype, the valuation was entirely speculative. As of 2025, there have been no sales, no revenue, and no evidence of a working Sullivan Generator, so the business remains a concept with no practical net worth.
