Engineering:AC block

From HandWiki
AC block
Other namesAC block container
Alternating current block
TypeEnergy storage device
IndustryEnergy storage
Inception2022[1]
DefinitionIntegration of battery racks and string PCS into one container[2]

An AC block, whose full name is alternating current block,[3] also known as AC block container,[4] is a container that integrates power conversion systems (PCSs) with batteries.[5] First introduced in 2022,[6] these devices are mainly used in the energy storage industry. AC block products are mainly composed of PCSs, thermal management and other components, as well as cabling.[7] It is seen as an alternative to the DC block container.

Currently, the number of companies that manufacture AC blocks is limited.[6] The main manufacturers of such products include Sungrow,[8] NV Energy,[9] Fluence,[10] and Wärtsilä.[11] Although this product type was not introduced until 2022, this emerging product design is gaining increasing popularity in the battery energy storage industry.[12]

Compared to DC block containers

Compared to DC block containers, AC block containers reduce space requirements,[13] providing better reliability,[14] and easier installation.[15] However, in the short term, AC ones will come at a cost premium. In the long run, the advantages of AC block products may drive down the overall system costs.[6]

History

The first AC block product was launched in 2022.[16] In October 2023, another product in the same category was made available by Sungrow. In 2024, Wärtsilä released an AC block BESS called Quantum 3.[17]

In early 2025, Sungrow introduced the "AC block based on triple-E integration" concept,[18] where "triple-E" refers to power electronics, electrochemistry, and electrical grids. In June, the company rolled out the PowerTitan 3.0,[19] which was built upon this specific concept.[18]

Manufacturers

According to a research report published by S&P Global Commodity Insights, as of November 2023, the manufacturers that produce AC blocks were very limited.[6] Sungrow Power Supply and Rimac Energy were included in this report.[6]

References

  1. ↑ "Fluence Energy launches its AC block energy storage system". EE Times. February 17, 2025. https://www.eet-china.com/mp/a382592.html. 
  2. ↑ "Top 5 global inverter trends to watch in 2025". S&P Global. January 29, 2025. https://pv-magazine-usa.com/2025/01/29/top-5-global-inverter-trends-to-watch-in-2025/. 
  3. ↑ Cameron Murray (November 13, 2024). "Ease of installation and better availability to drive shift to AC block solutions". Energy Storage News. https://www.energy-storage.news/ease-of-installation-and-better-availability-to-drive-shift-to-ac-block-solutions/. 
  4. ↑ Marija Maisch (March 19, 2024). "Next-gen battery trends". PV Magazine. https://pv-magazine-usa.com/2024/03/19/next-gen-battery-trends/. 
  5. ↑ Ameya Paleja (September 16, 2024). "Quantum 3: Wärtsilä unveils smart container-like grid-level energy storage system". https://interestingengineering.com/energy/wartsila-containerized-battery-energy-storage-solution. 
  6. ↑ 6.0 6.1 6.2 6.3 6.4 "Will AC blocks become the standard product offering for energy storage systems?". S&P Global. November 21, 2023. https://www.spglobal.com/commodity-insights/en/research-analytics/will-ac-blocks-become-the-standard-product-offering-for-energy. 
  7. ↑ Andy Colthorpe (October 22, 2025). "'Developers don't want geopolitical risks': Fluence talks up US domestic content strategy". Energy Storage News. https://www.energy-storage.news/developers-dont-want-geopolitical-risks-fluence-talks-up-us-domestic-content-strategy/. 
  8. ↑ "Sungrow Launches New Solar and Energy Storage Products at RE+ 2025". Financial Times. September 10, 2025. https://archive.today/20250913143620/https://cse.google.com/cse?cx=007734830908295939403:galkqgoksq0%23gsc.tab=0&gsc.q=%22Sungrow%20has%22%20%22AC%20Block%22%20%22PowerTitan%22. 
  9. ↑ David Wagman (December 12, 2022). "NV Energy to add BESS as it works to trim reliance on western energy markets". Renewable Energy World. https://www.renewableenergyworld.com/energy-storage/nv-energy-to-add-bess-as-it-works-to-trim-reliance-on-western-energy-markets/. 
  10. ↑ Andy Colthorpe (February 14, 2025). "Fluence launches AC block BESS solution with 'industry-leading' energy density". Energy Storage News. https://www.energy-storage.news/fluence-launches-ac-block-bess-solution-with-industry-leading-energy-density/. 
  11. ↑ Cameron Murray (April 1, 2025). "Wärtsilä on design, mitigation and new tech for quietening BESS". Energy Storage News. https://www.energy-storage.news/noise-can-make-or-break-a-project-wartsila-on-design-mitigation-and-new-tech-for-quietening-bess/. 
  12. ↑ Cameron Murray (November 26, 2024). "The evolving dynamics of the energy storage system integrator landscape". Energy Storage News. https://www.energy-storage.news/the-evolving-dynamics-of-the-energy-storage-system-integrators-landscape/. 
  13. ↑ Veselina Petrova (July 16, 2025). "Battery maker IPS launches Bulgaria's first Net-zero strategic project". Renewablesnow.com. https://archive.today/20251012132713/https://www.ecosia.org/search?q=%22the+AC+block+design+(inverter+inside+the+enclosure),+significantly+reduces+space+requirements+as+well+as+balance+of+system%22+site:renewablesnow.com. 
  14. ↑ Cameron Murray (December 3, 2024). "Minimising the role of EPCs in BESS and the 'shocking' cost of US manufacturing". Energy Storage News. https://www.energy-storage.news/american-energy-storage-innovations-aesi-ceo-interview-minimising-role-epcs-shocking-price-us-made-batteries-china-malaysia/. 
  15. ↑ Andy Colthorpe (April 17, 2025). "AC blocks continue to grow in popularity". Energy Storage News. https://www.energy-storage.news/bw-ess-on-how-sungrows-ac-block-technology-met-requirements-for-the-331mwh-bramley-bess/. 
  16. ↑ Marija Maisch (February 19, 2025). "Fluence launches highly-modular 7.5 MWh AC-based BESS platform". PV Magazine. https://www.pv-magazine-india.com/2025/02/19/fluence-launches-highly-modular-7-5-mwh-ac-based-bess-platform/. 
  17. ↑ Jo Borrás (September 15, 2024). "Wärtsilä makes a quantum leap with Quantum 3 utility scale BESS". Electrek. https://electrek.co/2024/09/15/wartsila-makes-a-quantum-leap-with-quantum-3-utility-scale-bess/. 
  18. ↑ 18.0 18.1 "Sungrow introduces its PowerTitan 3.0 smart storage platform". December 12, 2025. https://archive.today/20251213030026/https://www.takungpao.cn/special/239159/2025/1212/1147300.html. 
  19. ↑ Cameron Murray (June 11, 2025). "Sungrow launches PowerTitan 3.0 with modular design". Energy Storage News. https://www.energy-storage.news/sungrow-launches-powertitan-3-0-with-modular-design/. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Engineering:AC_block&oldid=4282958"