Monarch of the sun's energy storage purchase growing the IRP logic behind the utility companies in the United States

Editor's note: recently, the solar panels, solar energy, the public utilities in the plan for the future investment think the usefulness of energy storage is more and more big, the for this in the next year will increase the procurement of energy storage.

utilities in planning the future investment across the country, think energy storage flexibility as a resource to generate electricity use is more and more big. Utilities when making long-term planning methods is the integrated resource planning ( IRP) , but the IRP cannot accurately measure the benefit of the energy storage. Then utility companies also began to actively explore new ways to overcome challenges.

a driving force of the recent U. S. energy storage purchase: thanks to regulations, in the near future of IRP of the large number of U. S. utilities mentioned in energy storage, and a growing momentum. Such laws and regulations on energy storage size minimum requirements are put forward. Due to its specific purpose, growing energy storage competitiveness, in addition, the utility to deepen understanding of the energy storage and flexibility of power grid and the increasingly pressing needs also to a certain extent, promote the development of energy storage.

the IRP restrictions: at present there are still a series of defects in IRP process, energy storage form resistance for sourcing utilities through the IRP. Through the IRP purchasing process of energy storage system has three obvious flaws:

1. Planning cycle is long, cause the IRP used batteries cost data, the conclusion of the economy is lower than actual level of energy storage.

2。 IRP low precision of scheduling model and underestimate the advantages of energy storage in operating.

3。 Not considering energy storage service cycle's ability to provide a variety of services.

the IRP to keep pace with The Times, utility companies are introducing a new method to eliminate the above limitations. Common methods include:

1. Shorten the storage time difference between the actual purchasing and resource planning.

2。 Development with the hour meter scheduling model, in order to better reflect the value of energy storage.

3。 Using the net capacity cost method, in order to better illustrate the value of the energy storage capacity flexibility and contribution.

utilities purchasing process of energy storage systems:

utility based on IRP by tender, photovoltaic (pv) grid, consider the technical, financial and operational aspects of the factors in choosing the winner. Regulated utilities must be treated to evaluate all types of ownership model, to ensure that taxpayers to provide the most cost-effective solution. But, utilities may prefer inside ownership, through higher rate basis to increase their income. Energy storage procurement contract type and the deadline of changing, solar energy, solar energy portal, difference is very big between different utilities and state.

the original title: energy storage purchase growing the IRP logic behind the utility companies in the United States