据天然气加工网站10月7日报道 石油巨头雪佛龙的美国子公司和废物管理公司Brightmark宣布称，其已经成立了一家合资企业，销售乳制品生物甲烷气，这是一种由牛打嗝产生的甲烷排放物制成的可再生天然气。
反刍家畜，如牛和羊，在消化纤维植物材料的同时，会产生甲烷作为副产品。甲烷排放量占全球排放量的20%，科学家多年来一直致力于减少牛气体排放量。
雪佛龙美国公司和Brightmark公司表示，他们在新合资企业Brightmark RNG将为美国多个州的乳制品生物甲烷气项目的建设和商业运营提供资金。
两家公司表示，雪佛龙将购买合资公司项目生产的可再生天然气，并将其销售给使用压缩天然气的汽车。
这一最新举措突显出投资者需求的转变，近年来，包括雪佛龙在内的化石燃料企业面临着越来越大的压力，要求它们减少排放，加大在低碳能源上的投入，并披露化石燃料生产对气候变化的影响。
雪佛龙美洲产品部总裁安迪·沃尔兹表示：“我们正在增加可再生能源，以支持我们的业务，进行有针对性的投资，并在评估新兴能源及其在我们投资组合中的作用时建立伙伴关系。”
雪佛龙也是另一家可再生天然气合资公司Calbigas LLC的一部分，该公司上个月宣布首次在Kern郡的奶牛场成功生产。
王磊 摘译自 天然气加工
原文如下：
Chevron, Brightmark form JV for dairy biomethane fuel project
Oil major Chevron Corp's U.S. unit and waste management firm Brightmark LLC announced they have formed a joint venture to market dairy biomethane, a renewable natural gas made of methane emissions from cattle burps.
Ruminant livestock such as cattle and sheep produce methane as a byproduct while digesting fibrous plant material. Methane accounts for 20% of global emissions and scientists have been working for years to reduce the amount of the gas released by cattle.
Chevron U.S.A. and Brightmark LLC said their investments in the new venture, Brightmark RNG Holdings LLC, will fund the construction of required infrastructure and commercial operation of dairy biomethane projects across multiple U.S. states.
Chevron will purchase the renewable natural gas produced from the JV's projects and market it for use in vehicles that run on compressed natural gas, the companies said.
The latest move underscores a shift in investor demand, with increased pressure in recent years on fossil fuel companies, including Chevron, to reduce emissions, spend more on low-carbon energy and make disclosures on the impact of fossil fuel production on climate change.
"We are increasing renewables in support of our business, making targeted investments and establishing partnerships as we evaluate emerging sources of energy and the role they will play in our portfolio," said Andy Walz, president of Americas products for Chevron.
Chevron is also part of another renewable natural gas JV, CalBioGas LLC, that last month announced its first successful production from dairy farms in Kern County.
