CleanSpark (CLSK) signed a 20-year lease with an unnamed high-investment-grade global technology company for its data center campus in Sandersville, Georgia, worth about $6.6 billion in contracted revenue.

The bitcoin miner disclosed the triple-net agreement Tuesday, along with two five-year extension options that would lift the total to as much as $11.6 billion if exercised. The tenant will deploy 175 MW of critical IT load at Sandersville, with deliveries expected to begin in the fourth quarter of 2027, according to CleanSpark’s announcement.

A triple-net agreement is a commercial real estate lease where tenants agree to cover the rent, insurance and any typical ongoing operating expenses for a property.

"While the tenant remains confidential, they are a global technology company among the high-investment-grade cohort," CleanSpark wrote in its announcement, noting

Tuesday’s deal also reaches beyond Sandersville, Georgia, as the companies plot out a "substantially larger relationship." The same unnamed tenant executed a letter of intent and exclusivity arrangement covering CleanSpark's entire Texas portfolio, which spans 718 acres and up to 885 MW of secured and planned power capacity across its Sealy and Brazoria campuses.