4/12/2021 2:18:54 PM GMT | By Yohay Elam Sos Ltd's shares have been rising by some 7% in response to upbeat news. The blockchain company has announced the purchase of three US-based power plants. Expanding its digital mining operations may boost the firm's fortunes. NYSE: SOS shares are still down on the month. What does a cryptocurrency company need apart from the rising prices of digital coins? In the case of SOS Ltd. (NYSE: SOS), the answer is more mining power. THe China-based firm has announced that it signed a letter of intent to purchase three power plants, allowing it to expand its operations.