As our ownership of digital media devices and our use of online services increase, so too our digital memories amass and our need for digital memory storage expands. This chapter asks: what do digital-global memory economies include, how do they work, who pays the cost of their expansion, and who benefits most? To understand the political economy of digital-global memory, we propose that we need a concept of memory capital, which incorporates the accumulation of the energetic labour of remembering and of forgetting in materialised form. In analysing memory capital, we focus on the unevenness of digital-global memory and on the environmental damage it causes.