requiring utilities and electric grid operators to assess and report the vulnerability of high-voltage transformers to geomagnetic and electromagnetic disturbances, and to recommend mitigation measures to protect the state electric infrastructure.

Bill title and page headers changed from 'As Amended by the Senate' to 'Version Adopted by Both Bodies' to reflect final adoption status.

A new date stamp (4Jun2026, 9:58 PM) was added indicating when both bodies adopted the version.

A new date stamp '05/14/2026 1811s' was added to the document header, indicating this is the second Senate amendment version of the bill. No changes were made to the actual policy text, requirements, findings, or any other substantive provisions.

Header changed from 'AS AMENDED BY THE HOUSE' to 'AS AMENDED BY THE SENATE' throughout the document

New date line '04/09/2026 1307s' added to indicate when the Senate amendment was made

The bill no longer imposes direct obligations on electric utilities and developers ('covered entities') to conduct assessments and file reports. Instead, it directs the state Department of Energy to investigate vulnerabilities and report findings with recommendations.

Added six new findings (VII-XII) citing the 2012 CME that missed Earth by 9 days, 2012 Idaho National Laboratory HEMP tests showing transformer half-cycle saturation at just 15 amps GIC, the 2013 NERC reference storm of 30-40 V/km, the 2025 IEC update to 85 V/km, the gap between NH's 3 V/km NERC modeling requirement and international standards, and a statement that validated GIC mitigation hardware exists making load shedding no longer justified.

Removed the requirement for covered entities to conduct a technical assessment by January 1, 2027, using specific IEC waveform parameters (20,000 nT peak magnetic field, 85 V/km electric field), fully loaded transformer assumptions, and ANSI/IEEE standards.

Added a new section directing the Department of Energy to investigate vulnerabilities by answering nine specific questions covering: previous studies conducted, how they were done and what vulnerabilities were found, whether the 3 V/km NERC standard adequately assessed vulnerability compared to the 85 V/km IEC standard, what standard should be used if not, cost of a higher-standard assessment, timeline for such an assessment, current mitigation strategies and their adequacy, the state's role regarding FERC-jurisdictional infrastructure, and available funding sources.

Removed the 180-day reporting deadline for utilities to submit reports to the department of energy, public utilities commission, governor, chief of homeland security, and legislature.

Removed all defined terms including 'covered entity,' 'covered equipment' (transformers with primary voltage 100 kV or greater and capacity 25 MVA or greater), 'GIC,' and 'CEII' (critical energy infrastructure information protocols).

Changed from creating a new chapter (RSA Chapter 378-A) in state law to a standalone act directing a departmental investigation, removing the permanent regulatory framework structure.