Grid services are a product, not a feature

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"We'll add grid services later" is one of the more common lines in an EV charging roadmap, usually said with the confidence that it's a switch you flip once the core charging product works. It isn't.

Why it doesn't bolt on cleanly

Core charging optimizes for one thing: get vehicles ready on time, as cheaply as possible, without upsetting the site's connection limit. Grid services — frequency response, demand turn-down, wholesale arbitrage — ask the same hardware to also respond to signals that have nothing to do with the vehicle at all, on timescales the charging logic was never built to reason about.

If the scheduling engine's only inputs are "vehicle, dwell time, target SoC," there's no clean place to inject "also, reduce site load by 30% for the next 15 minutes because a grid operator asked."

What actually needs to exist first

• A data pipeline that can prove what happened, not just what was scheduled — settlement depends on measured performance, not intent
• A commercial owner who understands the revenue mechanics of the specific market (capacity, balancing, wholesale — they pay very differently)
• Tolerance from operations for the product occasionally overriding the "ideal" charging plan for a grid event

None of that is a charging-platform feature. It's a separate product with its own P&L logic, sitting on top of the same hardware.

The practical implication

If grid services are on your roadmap, give them a real owner and a real spec before the core platform ships — not a post-launch backlog item. Retrofitting always costs more than it looks like it should.