How Singapore's Open Electricity Market actually works for businesses
Contestability changed who you buy power from, not the power itself. Here's the part that matters for your business.
Key takeaways
- The Open Electricity Market (OEM) lets contestable consumers buy electricity from any licensed retailer, not only the incumbent.
- Your physical supply, meter, and wiring don't change when you switch, only the billing relationship does.
- Most of the savings sit in how the contract is structured, not in the headline rate.
For most of Singapore's history, you bought electricity one way: at the regulated tariff, from the incumbent. The Open Electricity Market changed that. Singapore progressively opened electricity retail to competition, and today commercial and industrial accounts like yours, "contestable consumers", can choose which licensed retailer to buy from.
That sounds simple, and at the level of physics it is. What trips businesses up is everything that sits around the choice: plan types, contract length, demand charges, and timing. Let's separate what actually changed from what didn't.
What changes when you switch, and what doesn't
The single most important thing to understand: switching retailers does not touch your physical supply. The same grid delivers the same electrons through the same meter. The poles, wires, and connection are unchanged, and supply reliability is unaffected. What changes is the commercial contract, who bills you, at what rate, and on what terms.
That's why switching carries far less operational risk than people assume. There is no downtime, no rewiring, and no disruption to operations. The decision is a procurement decision, not an engineering one.
The grid stays the same. The bill is what's up for negotiation.
Where the savings actually hide
Because the commodity is identical, retailers compete on price and contract structure. And this is where it gets interesting: you and a competitor buying the "same" electricity can pay very different effective rates, depending on choices that have nothing to do with the headline number.
- Plan type: a fixed rate, a wholesale-indexed rate, or a time-of-use structure each behaves very differently depending on how and when you consume.
- Contract tenure: locking a long fixed term at the wrong moment can cost you for years; too short, and you renegotiate into an unknown market.
- Demand and capacity charges: for larger accounts, a single peak can drive a charge that the headline rate never reveals.
The headline rate is the part everyone looks at. The structure is the part that quietly decides what you actually pay.
What this means for your business
If you've never reviewed your plan against your real consumption pattern, the odds are good that the contract was chosen for the wrong reasons, usually "it was the cheapest rate quoted that week." A proper review starts from your meter data and works forward to the plan, not the other way around.
That's the whole job of an independent advisor: read the load, benchmark every licensed retailer against it, and recommend the structure that fits, without a commercial preference for any retailer.
