Noble Energy has been operating in the Mediterranean Sea, offshore Israel, since 1998. Our track record of success in the region began with Mari-B, the first offshore natural gas production facility in Israel. Production from Mari-B began in 2004 and sales volumes increased as Israel's power demand and pipeline infrastructure have expanded tremendously. A string of successful exploration wells offshore Israel and Cyprus has resulted in the discover of more than 40 Tcf of new gas resources for this region. Sales from Tamar began in March 2013, just over four years from discovery.
We have a 36 percent operated working interest at Tamar, with gross mean resources of 10 trillion cubic feet (Tcf) of natural gas. Tamar was the largest deepwater natural gas discovery in the world in 2009. Deliverability of natural gas into Israel is being expanded to meet growing Israeli demand through an onshore compression project.
Leviathan represents the largest exploration success in Noble Energy's history, with gross mean resources of 22 Tcf of natural gas. We are pursuing regional export opportunities for both Tamar and Leviathan and have recently announced Letters of Intent for approximately 8 Tcf of resources to LNG facilities in Egypt, as well as to Jordan for power generation. We are actively progressing multiple export options as well as a potential domestic development solution.
In late 2011, we announced a discovery offshore Cyprus with estimated gross mean resources of 5 Tcf, and are currently studying options for development.
Maintain regulatory framework and need for investment climate to progress additional project development.