As I mentioned, I don't think it save electricity but just surge protector
But refrigerator may use slightly less power with surge protector.
Sorry, read too quickly. Surge protectors help the sound? First I ever heard of that. Plus, these units have to be burned in too, before being sonically evaluated. In any case, I take it your gear goes directly into the wall and your part of Washington state is a highly volatile weather area, with common lightning strikes, where extra measures of protection are called for.
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Living room: Lampizator Golden Gate 2/3 single-ended dac w/ VC, Engine 11-P upgrade (Poseidon), TP tube adapters & ground cables; VAC Master preamp; Ric Schulz modified Oppo 203 (digital only); ATC SCM 5OASLT active speakers & JL Audio e-110 subs on custom pedestals & Gaia I & II feet; Wyred Pro Stream Power Conditioner & PS Audio P15 Regenerator w/ PowerBase; WyWires Diamond power cords and ICs; Purist Audio Design Neptune S/PDIF & HDMI cables; High Fidelity magnetic adapters; CAD II-R USB cable and Audioquest Jitterbug FMJ feeding Oppo; ASC bass traps; AV Roomservice EVPs & Graphite Audio Premium Isolation Cones; iFi S/PDIF iPurifier w/ Paul Hynes SR4 LPS & ZenWave DC cable, Swiss Digital Fuse Boxes (8) w/ Audio Sensibility adapters and WyWires Platinum power cords & graphene/brass sluggos; Russ Andrews plug-in RF Router and grounding cables, Gutwire Ultimate Ground cable; Furutech GTX-D outlet; and Nordost QK1 & QV2 (x2) & QSine, and Puron AC Line Conditioners; NPS-Q45T/NPS-1260 contact enhancers.
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