据普氏能源资讯2019年4月26日华盛顿报道阿维斯塔公司宣布计划于2022年加入西部能源不平衡市场，以帮助整合可再生资源。就在一周前，该公司刚刚宣布了到2045年实现100%清洁能源的目标。
这一宣布意义重大，因为阿维斯塔的加入，进一步扩大了EIM的地理范围使其电力服务领域横跨华盛顿和爱达荷州。EIM是一个由加州独立系统运营商运营的实时市场，帮助成员们将能源转移到西部。
阿维斯塔发言人凯西·菲尔德周五表示，尽管阿维斯塔加入西部的EIM的决定与其清洁电力目标没有直接关系，但它将有助于支持这一努力。她说:“我们决定加入西部的EIM的原因之一，是预期未来把更多的可再生资源纳入我们的系统。”
该公司网站称，如果不加入EIM，阿维斯塔仍可整合更多太阳能和风能，直到其水力和热力发电机的柔性斜坡发电能力耗尽为止。阿维斯塔表示:“然而我们将需要携带大量灵活的储备，这比依赖EIM来平衡这些资源的可变性，效率更低下，成本也更高。”
孙子舒 摘译自 普氏能源资讯
原文如下：
Avista to join EIM as it eyes adding more renewables
Washington — Avista is touting its plan to join the Western Energy Imbalance Market in 2022 as a way to help integrate renewable resources, a move that comes just a week after the company declared its goal to achieve 100% clean energy by 2045.
The announcement is significant because adding Avista, whose electric service area spans Washington and Idaho, further expands the geographic reach of EIM, a real-time market run by the California Independent System Operator to help members move their energy around the West.
While Avista's decision to join the Western EIM is not directly tied to its clean electricity goal, it will help support the effort, Avista spokeswoman Casey Fielder said Friday. "One of the drivers of our decision to join the Western EIM is the anticipated integration of additional renewable resources into our system in the future," she said.
If it were not joining the EIM, Avista could still integrate more solar and wind to the point where its hydro and thermal generators run out of flexible ramping capacity, the company's website said. "However, we will need to carry large amounts of flexible reserves, which is extremely inefficient and more costly than relying on the EIM to balance the variability of these resources," Avista said.
