======================================================================== GRIDLINQ V2G CASE STUDY SUMMARY ======================================================================== HARBOR LANDING MARINA CLUB Condominium marina with annual slips — Charleston, South Carolina Association-owned slips that lower everyone's dues An owner-association marina with 140 annual slips. V2G capacity now offsets common-area demand charges and backs up the clubhouse during hurricane season. ------------------------------------------------------------------------ PROPERTY PROFILE ------------------------------------------------------------------------ Scale: 140 annual slips Service: Mixed 50A, phased pedestal replacement V2G enabled: 58 bidirectional pedestals ------------------------------------------------------------------------ THE STARTING POINT ------------------------------------------------------------------------ - Common-area electrical costs were rising faster than the association could raise dues. - Legacy 30A pedestals could not support the members already arriving with electric tenders. - Hurricane-season outages left the clubhouse and dock lighting dark for days. ------------------------------------------------------------------------ THE BUILD ------------------------------------------------------------------------ Phase 1: Phased pedestal replacement Pedestals were replaced dock by dock over two off-seasons so no member lost shore power for a full season. Phase 2: Member opt-in Slip holders opt in per vessel and choose their own reserve floor, with revenue split between the owner and the association. Phase 3: Demand offset Aggregated discharge is dispatched against the association's own peak window before any grid export is considered. Phase 4: Storm mode A single switch puts the clubhouse, pumps and dock lighting on stored vessel capacity ahead of a named storm. ------------------------------------------------------------------------ RESULTS ------------------------------------------------------------------------ $0 Dues increase in three consecutive years 31% Common-area demand charge reduction 2 days Clubhouse uptime through a hurricane outage ------------------------------------------------------------------------ MEASURED OUTCOMES (BEFORE / AFTER) ------------------------------------------------------------------------ Common-area demand charges Before: $54,800 / yr After: $37,800 / yr Change: -31% Annual dues per member Before: $3,240 After: $3,240 Change: flat 3 years Member vessels able to charge Before: 12 of 140 After: 58 of 140 Change: +46 slips Clubhouse outage coverage Before: 0 hrs After: 48 hrs Change: +2 days ------------------------------------------------------------------------ PROJECT ECONOMICS ------------------------------------------------------------------------ Annual value: $17,000 avoided cost plus $21,000 shared revenue Capital: $0 special assessment — phased from operating budget Payback: 18 months across two off-seasons Time to value: 2 off-seasons to full pedestal replacement ------------------------------------------------------------------------ "Our board wanted resilience and our members wanted charging. The same pedestals delivered both, and the revenue share made the vote easy." — Board President, Harbor Landing Marina Club ======================================================================== Want this on your property? Book a free 30-minute assessment: https://gridlinq.dev/#contact Full case study: https://gridlinq.dev/case-studies/harbor-landing-marina-club ========================================================================