Nearly every explanation of the power-interest grid assumes you're mapping a project — a defined start, a defined end, a grid you build once at kickoff and reference until delivery. That assumption doesn't hold for a retainer or an ongoing account, where there is no delivery date to build toward. The relationship just keeps running, and so does everyone's position on the grid.
A project grid is a snapshot. An account grid is a timeline
On a project, power and interest are fairly stable — the sponsor who approved the budget in week one is usually still the sponsor at delivery, three months later. On a retainer that runs for two or three years, that assumption breaks. People get promoted, reorganized, or replaced. A stakeholder who started in "monitor" because they were new to the account can end up as your primary champion by year two. Treating the grid as a one-time exercise means you're managing the account off a map that stopped being accurate somewhere around month four.
What actually moves someone between quadrants on a live account
- A promotion.Your day-to-day contact gets promoted to director. Interest stays high, but power jumps — they move from "keep informed" to "manage closely."
- A good renewal.Someone who was skeptical at kickoff sees a strong result at the first review and becomes an internal advocate. Power hasn't changed, but interest — and attitude — has.
- A reorg.A new VP inherits the account with zero context on why you're there. They start in "monitor" by default, not because they lack power, but because you haven't established the relationship yet.
- An exit. Your original sponsor leaves the company. Whoever inherits their responsibilities may not inherit their enthusiasm for the work.
None of these show up if you built the grid once at kickoff and never opened it again.
A worked example over the life of one account
Take a marketing retainer for a mid-size SaaS company. Here's how one stakeholder's position actually moved over eighteen months:
Kickoff (Month 1) — Renata, Marketing Coordinator: Power: Low (no budget authority). Interest: High (manages the day-to-day handoff with you). → Keep informed.
First renewal (Month 6) — Renata, now Marketing Manager: Power: Medium (owns a portion of the budget, recommends renewal to her VP). Interest: High (unchanged). → Manage closely.
Eighteen months in — Renata, now Director of Marketing:Power: High (approves the retainer renewal directly, no longer needs sign-off above her). Interest: High (the program is now part of her track record). → Manage closely, but the relationship has shifted from "informing" to "partnering."
If you'd only mapped Renata once, at kickoff, you'd still be treating your strongest internal advocate as someone to keep informed rather than the person actually deciding whether the account renews.
When to actually revisit the grid
Tie it to events that already happen on the account, not an arbitrary calendar reminder: renewal conversations, quarterly business reviews, any time someone new joins a call, or any time an account that used to be active goes quiet without explanation. Each of those is a natural checkpoint to ask whether anyone's power or interest has moved since the last time you looked, and to update the power-interest grid accordingly instead of relying on memory.