Schedulable sex! Hawaii new optical storage project revenue model

On December 31, 2018, seven optical storage project of application documents submit pending in Hawaii. Photovoltaic (pv) communication for these projects, AC） A total of 262 mw capacity, energy storage capacity of a total of 262 mw / 1048 MWH. They because of the larger scale, the structure of the system design and the contract special and popular attention. With the traditional photovoltaic project income based on the total generating capacity is different, the optical storage project fee depends on the scheduling can be specified period of time. One of the items in the specified in the contract electricity price has reached the minimum the history of optical storage project in Hawaii. Other parts of the United States appeared project price is lower than that of light store project, but due to the different system design parameters, do not have comparability.

these projects corresponding to a kind of new revenue contract type, the key lies in schedulable. It allows electric power company decided to generating time, rather than passively by random illumination conditions. Corresponding, project developers get income also depends on the specified period of time the usability of the generating set, rather than any specific time of all electricity generated.

with traditional photovoltaic project sign the power purchase agreement ( PPA) The light is different, Hawaii project revenue model similar to natural gas storage fee has to be signed. Paying party rental is gas unit needs time availability, rather than the actual total generating capacity.

the seven project contract prices in 77. 8 ~ 116. $8 / MWh interval, slightly higher than our internal estimates. May be one reason is that the price includes application history shorter optical storage technology in the new project risk and need to solve the technical problems arising from the additional cost.

this batch of projects have adopted photovoltaic power capacity ( AC） Design of power and energy storage capacity ratio of 1:1, and the storage time is 4 hours. Most optical storage project in other areas of the United States energy storage power capacity of photovoltaic power capacity, far less than that is signed the project of the main causes of low degree of electricity price. From Hawaii project corresponding price higher another reason is that the island geographic features that some local construction related cost is higher.