TomCo Energy PLC is in the business of developing oil shale leases. It is engaged in the deploying technology on its oil shale leases and other unconventional oil resources for future production. Its subsidiaries are engaged in holding of oil shale leases and exploration and extraction of oil and gas. The company operates in two geographical segments that are United states and the unites kingdom.TomCo Energy PLC is in the business of developing oil shale leases. The firm owns five parcels of land. It has secured two leases and rights to prospect, drill, mine and remove oil shell in Green River Formation in Uintah County, Utah and Holiday block.