The Road Forward for Medium- and Long-Duration Energy Storage (9.9.26)

Value of the Information & Strength of the Argument

The webinar provides a high-density snapshot of LDES/MDES deployment as of 2026, with specific project examples (Golden Dale pumped hydro, Willow Rock compressed air, Form Energy iron-air, Energy Dome CO2, ESS iron-flow), cost benchmarks, and market trends. The data is current and sourced from credible trackers and DOE programs, offering strong decision-support value for utilities and state policymakers. The presentations build a coherent argument that LDES is transitioning from niche to strategic priority, evidenced by cost reductions, utility resource-planning integration, and record deployment. However, some quantitative claims (e.g., lithium-ion cost figures, specific project capacities) lack inline sourcing in the transcript, and the discussion of market barriers is qualitative rather than quantified with impact analysis. The mix of technical, market, and policy perspectives strengthens the overall argumentation, though the truncated transcript limits full evaluation.

Scientific Rigor, Source Quality, Title Accuracy

The webinar is presented by recognized institutions (Sandia National Laboratories, Pacific Northwest National Laboratory, LDES Council, CESA). Data references include Bloomberg NEF, EPRI, DOE Pathways to Commercial Liftoff, and CleanView project trackers—all credible industry sources. The consortium’s methodology (challenge scoring, technology readiness levels, roundtrip efficiency ranges) is systematic and transparent. However, the presentation format limits the depth of evidence provided for each claim, and the partial transcript prevents verification of the full scope of content. The official description links (ESTAP project page and webinar slides PDF) provide direct access to program context and presentation materials. The title accurately captures the webinar’s scope—a forward-looking assessment of MDES/LDES across technology, market, and policy dimensions—with no sensationalism or misalignment.

The title accurately reflects the webinar's focus on the current status and future trajectory of medium- and long-duration energy storage across technology, market, and policy dimensions.

8/10

Content presented by experts from Sandia National Laboratories, PNNL, and the LDES Council, with data drawn from Bloomberg NEF, EPRI, DOE Pathways to Commercial Liftoff, and CleanView trackers. Institutional credibility is high, though the transcript is partial and some quantitative claims lack direct inline citations.

Markers derived by PSI from the transcript: the creator did not define chapters.

• 02:00Webinar logistics: listen-only mode, Q&A via panel, recording will be shared.
• 04:00Todd Olinsky-Paul introduces ESTAP program and the three speakers.
• 08:00Will McNamara defines LDES (10+ hours) and MDES (8-24 hours) and notes hundreds of emerging technologies.
• 15:00US energy storage statistics: 1,643 operational projects, 9.7 GWh installed Q1 2026, top states CA/TX/AZ.
• 25:00Key LDES projects overview: Golden Dale pumped hydro, Willow Rock CAES, Crescent Dunes molten salt.
• 35:00Battery technology examples: Form Energy iron-air, Energy Dome CO2, Inlyte iron-sodium, ESS iron-flow, zinc-air, and lithium-ion Tumbleweed.
• 45:00Technology readiness levels and roundtrip efficiency comparison across LDES technologies.
• 55:00LDES cost reduction progress: thermal $232/kWh, CAES $293/kWh, turnkey $117/kWh; utility planning examples (Excel, Georgia Power).
• 1:05:00ISO/RTO market challenges, FERC Order 841 precedent, and state policy progress including California procurement carveout.

• ESTAP - Energy Storage Technology Advancement Partnership — Description link providing background on the ESTAP program that hosted this webinar.
• ESTAP webinar slides (9-9-26) — PDF of presentation slides referenced in the video description.