What the low-impact plan must cover, section by section, and the evidence that shows it is followed — written for solar, wind and battery sites entering registration.
Sites with low-impact BES Cyber Systems — including many inverter-based resources newly brought into scope by revised NERC registration criteria — must have documented cyber security plans under CIP-003-9 R2 and implement them.
A CIP Senior Manager must approve the policies (R1) and be identified (R3); delegations must be documented (R4).
Fleets of similar sites benefit from one plan applied consistently, with site-specific evidence collected the same way everywhere. Standardise the boundary configuration, collect it automatically, and keep each site's records in one place so a sample audit is easy to answer.
General guidance, not legal or compliance advice. Your obligations depend on your registration and assets — confirm them with your compliance team and Regional Entity.