In sum, there is great potential for storage both in front of the meter and on the customer side of the meter. Costs need to come down, but the longer-term trajectory indicates that this will happen, and policies and regulations to incentivize storage need to continue to be implemented to spur the creation of markets. The DOE's QER is a step in the right direction, calling for the establishment of a framework and strategy for storage and flexibility.
In the near-term, it is likely that most of the market development and storage capacity deployed will be at the grid-scale in competitive markets such as PJM, but the SCE procurement certainly highlights the impact of supporting policy and regulation in spurring competitively procured PPA-type arrangements. In addition, California's investor owned utilities have initiated the first round of storage auctions in response to the state?¡¥s mandate, with final project selection and submission to the California Public Utilities Commission for approval this coming fall.
In the longer-term, solar-plus-storage could become increasingly economic on the customer side. Indeed, as Hamilton of the Electricity Storage Association described, the three biggest storage markets in the residential sector are California, Arizona, and Hawaii and what they all have in common is lots of solar. But beyond selected markets, residential-scale storage systems such as Tesla's PowerPack won't likely lead to mass defection from the grid in the next five to 10 years. The important point, however, is that Tesla's announcements and all the other recent news is exciting because it shows the progress and potential of a technology with multiple applications and benefits across the grid, providing something for everybody.
In my review of utility grade energy storage companies last week, I highlighted that the sector has been in existence for a number of years but it is Tesla's high profile into the sector that has ignited media interest. We are still in the very early stages of this evolution and it is likely to persist into the lengthy medium term.Back to top