RatedPower can now design AC-coupled battery storage plans for utility-scale solar PV projects


Solar PV design software company RatedPower surveyed more than 100 solar industry professionals concerning their future outlook for its Renewable Energy and Solar Research Report. Respondents believe that battery storage and green hydrogen have the biggest potential to be successfully implemented around the world by 2030, with 64% of them identifying batteries. Looking ahead, more than half of respondents pointed to storage options (57%) as needing more resources in the coming year.

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RatedPower now has a solution for them. RatedPower’s clients can now design an AC-coupled BESS into their PV projects and hybridize any of them. The new feature allows users to have the basic engineering of a BESS and to represent the outputs in pvDesign documents. Through its BESS software module, you can include storage into new solar designs or into already existing projects.

“We are excited to release the basic engineering of an AC-coupled BESS that will become a fundamental piece of our entire business strategy. This pvDesign new feature is the first step to provide a complete hybrid PV—BESS solution to our clients”, says Ignacio Álvarez, Product Manager at RatedPower. “The synergies between storage and PV are highly consistent. The predictable daily on and off cycle of solar photovoltaics is well aligned with the battery charge and discharge needs. With the increase of renewables, battery storage has a critical role to play to successfully balance load 24/7.”

How does it work? Traditionally, BESS sizing is based on PV plant estimated rated power —regardless of available land or BESS requirements (i.e. capacity optimization or electrical requirements). RatedPower has inverted the approach to make the most of the area you place the BESS and take in account the supply chain duration or capacity optimization.

pvDesign automatically locates the battery containers and the power conversion stations in the defined site. It will take into account the hours of operation of the batteries, calculate the length of the cables or perform earthworks. It will also size the interconnection facility.

As it is usual with pvDesign, the software generates the required documentation for the basic engineering of an AC coupled BESS:

  • Layout,
  • Bill of materials
  • Design report.

pvDesign also provides the energy that is available to charge the batteries.

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