1254 GMT - Saudi Aramco could grow operating cash flow by around 30% by 2030, Barclays analyst Lydia Rainforth writes after hosting the company at the Barclays Energy-Power Conference. The Saudi Arabian national oil company expects gas developments to add approximately $12 billion to $15 billion of incremental cash flow over the period, she says. Secondly, the company expects improved downstream performance to add up to $10 billion, she says. And finally, oil and gas production growth will contribute, with the company estimating that each additional 1 million barrels a day generates approximately $11 billion to $12 billion at the 2025 crude oil price, she says. Aramco has the opportunity to add 2 million barrels a day of additional production.