clarify the definition of backup electric generation.

SB 193 clarifies the definition of "backup electric generation" in South Dakota law, specifically defining it as temporary, grid-isolated power used only when primary electricity sources fail. This definition directly affects electric utilities, the Public Utilities Commission (referred to as "Commission" in the bill), and regulatory processes for energy facilities. The key mechanism is amending Section 49-41B-2(3) to explicitly state that backup generation is not interconnected with the grid and serves as a temporary replacement for primary power. This change ensures regulatory clarity for the Commission when reviewing facility permits and expansions. The bill does not alter existing requirements but provides a clear standard for future regulatory decisions.