NSF FREEDM Center Hits 17-Year Mark As Generation-IV Engineering Research Center Competition Begins

The National Science Foundation Future Renewable Electric Energy Delivery and Management (FREEDM) Systems Center at North Carolina State University entered its seventeenth operational year in 2025. FREEDM was funded by NSF as a Generation-III Engineering Research Center (ERC) in 2008 with the solid-state transformer (SST) as its architectural anchor technology. The standard NSF ERC funding horizon is 10 years with extensions; FREEDM has been extended multiple times. NSF’s Generation-IV ERC competition is now underway and the future of large-scale US academic SST research will be substantially determined by which Gen-IV centers receive funding.

FREEDM’s research output through 17 years has been substantial. Dozens of PhD students whose dissertations built directly on FREEDM SST work are now senior engineers at Eaton, Hitachi Energy, ABB, DG Matrix, Amperesand, and Heron Power. The Y10 SST core program led by Dr. Subhashish Bhattacharya delivered three-phase compact SSTs operating between 7.2 kilovolts AC and 400 volts DC or 240 volts AC. The Y10 architecture is recognizable in the commercial MV-SST products shipping in 2026.

The Generation-IV ERC competition timing is consequential. NSF has signaled that wide-bandgap power electronics, including SSTs, will continue to be a priority research area in the Gen-IV cycle. Whether NSF awards a successor center at NCSU (which would extend FREEDM’s organizational continuity) or at a different US university (which would establish a parallel SST research base) will determine the academic-industrial pipeline structure for the next decade.

FREEDM’s 2025 Annual Report documents continuing SST research under the wide-bandgap power semiconductor track. Silicon carbide MOSFETs from Wolfspeed and Infineon enabled efficiency gains the original 2008 silicon-IGBT generation could not deliver. The single-stage SST research line, targeting 99 percent efficiency at 20 kilowatts with 480 volts input and 480 volts output, continues. Commercial vendors have not adopted the single-stage architecture at volume, but the FREEDM research line is the technical reference against which two-stage commercial efficiency claims are benchmarked.

The broader policy question is whether NSF’s ERC program structure — multi-decade university-industry consortia at single anchor institutions — remains the right vehicle for emerging power-electronics technologies, or whether smaller, more numerous, and more agile funding instruments would deliver higher commercial output per federal dollar. The Gen-IV ERC competition outcome will be visible in late 2026.

Critical Perspective

Editorial correction: This post is part of MGRID’s Solid-State Transformer industry coverage. As of May 2026, that body of work systematically framed manufacturer announcements, funding rounds, and laboratory demonstrations as commercial deployments. The reality is that field-deployed commercial-class SST in revenue service globally is measured in single digits, and almost every product cited in this series is at “announced” or “funded” stage, not “operational.” Readers should treat the specific claims in this post against the standards documented in our SST Industry Reality Check (the per-claim audit table maps marketing language to verifiable deployment status). The corrective article is the canonical reference for SST industry reality; this post remains published with its original framing so the editorial drift is traceable.

Related Coverage

• FREEDM Systems Center at NCSU: The 2008 NSF Center That Turned Solid-State Transformers Into Real Devices: FREEDM’s history of turning solid-state transformers into real devices
• The Federal R&D Investment Ecosystem Under the US Solid-State Transformer Industry: ARPA-E, DOE OE, NSF FREEDM, and Why It Matters: NSF FREEDM’s role in the US solid-state transformer R&D ecosystem
• Virginia Tech CPES Is the Second-Most-Important US Academic Solid-State Transformer Research Center After NCSU FREEDM: NCSU FREEDM’s position as a leading US academic SST research center
• Why Single-Stage AC-AC Solid-State Transformers Are the Holy Grail: And Why Almost Everyone Builds Two-Stage Anyway: The challenge of single-stage SSTs, a research focus for FREEDM