PSDS Phase 3c: the 90-minute closure

Phase 3c closed in roughly 90 minutes in September 2024 [Salix]. The first-come-first-served queue was overwhelmed by demand prepared from Phase 3a and 3b experience. This is the formative Phase 5 lesson for bursars.

Oliver Wakefield-Smith
Founder · Digital Signet
Verified for Phase 4 / Phase 5 watch · refresh expected on Phase 5 window opening
Primary source · Salix Finance PSDS portal salixfinance.co.uk/PSDS last verified 22 Jun 2026

Why it closed so fast

Bidders queued ahead of the window with feasibility studies, GCC calculations and pre-filled portal entries. The £230m sub-phase budget was committed to fully eligible applications within the first 90 minutes.

Demand vs budget

Demand exceeded budget by a multiple [Salix]. Many fully eligible bids were rejected purely on queue position.

What changed for 3d

Salix moved to a targeted-allocation model based on Grant Carbon Cost, replacing the first-come queue. This change carried into Phase 4 [DESNZ].

Implications for Phase 5

If Phase 5 mirrors 3c on queue mechanics, the application must be pre-filled before open. If it inherits 3d/4 targeted-allocation mechanics, GCC discipline is the binding edge.