Ballast Thermal Storage Retrofit

Fixed-rate notes on salt storage bolted onto an operating plant, so a baseload machine can chase the peak price.

A nuclear plant is a machine that produces constant heat, and an electricity market pays wildly varying prices for it. Storing heat in molten salt during cheap hours and drawing it down during expensive ones is arbitrage against the plant's own inflexibility, using equipment already proven at concentrated solar plants. No nuclear license amendment is required because nothing on the nuclear side is modified.

North Platte Generating Station · Casper, WYNot applicableEscrow: Meridian Trust, N.A.

TRL 8 of 9, band 7.6 to 8.5, signed by Dr. Samuel Adeyemi, PhD Nuclear Engineering; ASME Section III reviewer, on Apr 9, 2026.See the evidence it rests on

$20,240,000 committed of $22,000,000

$18,216,000 released · 92% subscribed

Released to the issuerCommitted, held in escrowRemaining

Minimum: $500
Target coupon: 6.45%
Term: 5 yr
Investors: 2,961

Closed August 14, 2026

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TRL assessment

Technology readiness level, 1 to 9

Confidence band 7.6 – 8.5

Molten salt thermal storage is commercially proven at concentrated solar plants and this system is complete and undergoing commissioning, which is level 8. Nothing on the nuclear side is modified, so no license amendment is required and the regulatory risk is close to nil. The commercial exposure is merchant: the revenue depends on a peak-to-off-peak price spread that competing storage will erode.

At TRL 8, the ladder permits Fixed-rate note or Municipal mini-bond and releases up to 90% of committed capital. This offering is structured as a fixed-rate note, which is consistent with that band.

Signed and published

Reviewer: Dr. Samuel Adeyemi
Credential: PhD Nuclear Engineering; ASME Section III reviewer
Signed: April 9, 2026
Published: April 10, 2026
Methodology: v1.4
Model: ci-trl-2026.06
Generated: Apr 4, 2026

How scoring works

Evidence

Every score cites the documents it was derived from, with the weight each carried. An assessment without evidence is an opinion.

Source	Document	Date	Weight
Independent test report	Salt loop commissioning and thermal cycling Independent commissioning report Charge and discharge cycles achieved rated capacity with expected losses.	Feb 19, 2026	34%
Metered output	Commercial precedent, concentrated solar storage installations Published operating data, comparable salt storage plants Equipment class has a multi-decade commercial operating record.	Oct 30, 2025	26%
Independent test report	Host plant steam extraction impact study Independent engineering study, host operator reviewed No modification to safety-related systems; no license amendment required.	Jan 14, 2026	24%
Supplier contract	Market participation and dispatch agreement Executed agreement with the organized market operator Registered as a storage resource. No capacity payment floor.	Dec 5, 2025	16%

Score history

A score changes on the day a reviewer signs a new assessment, which is why this is a step line rather than a curve.