Over the course of the past few weeks, Riot has been particularly interested in the state of the emerging solar and storage markets, and their potential impact on utilities. Last week we spoke to the US branches of battery storage vendors Sonnen & Orison. What emerged from these two conversations were two very distinct narratives about the future of the battery storage sector. The key difference we observed in our conversations was in the future of manufacturing costs – with established German battery storage company Sonnen optimistic that scale would bring about savings, and startup Orison thinking that pricing is going to remain pretty static, regardless of scale. The other main difference we observed was in the business approaches of…