2.0TD vs 3.0TD for Businesses in Spain
The most important business electricity question in Spain is often not the supplier first. It is whether the business should be on 2.0TD or has already moved into 3.0TD territory.
The 15 kW threshold changes everything
In simple terms, small businesses below 15 kW normally stay on 2.0TD, while businesses above that level move onto 3.0TD. That single threshold changes how many periods you pay across, how contracted power is structured, and which penalties become relevant.
For many owners, the confusion starts when the site sits near the threshold. A café, bar, bakery, workshop, or guesthouse can look like a small business operationally while still needing a tariff structure that behaves like a much larger commercial site.
What is the difference between 2.0TD and 3.0TD?
2.0TD
Usually for smaller premises
- Normally applies where contracted power stays below 15 kW.
- Has fewer billing periods and a simpler structure than 3.0TD.
- Usually suits small offices, lighter cafés, and lower-load commercial units.
- Becomes a poor fit once simultaneous demand starts stretching the threshold.
3.0TD
Usually for higher-demand businesses
- Usually applies once contracted power goes above 15 kW.
- Uses 6 periods for energy and 6 periods for contracted power.
- Makes potencia strategy much more important to the final bill.
- Introduces risks such as maximeter exposure and more complex bill review.
How to tell which tariff usually fits your business
A business is more likely to need 3.0TD when several heavy systems operate together rather than one appliance working in isolation.
The site uses electric ovens, fryers, industrial refrigeration, extraction, or stronger HVAC at the same time.
The property has hotel-style loads such as hot water, pumps, laundry, or guest comfort systems.
The business regularly experiences high start-up peaks when multiple systems switch on together.
The bill already shows contracted-power complexity that looks far beyond a simple SME setup.
Typical examples
A small office or light café may remain on 2.0TD for years. A venue with stronger refrigeration or kitchen demand can cross the line quickly. That is why pages like our bar electricity cost guide and hotel electricity cost guide matter: the tariff decision is tied to the operating profile, not just the business label.
If a business is already on 3.0TD, the next step is understanding how the periods and contracted power work in practice. Start with our 3.0TD guide.
The expensive mistake to avoid
Many businesses focus only on the unit energy rate and ignore tariff structure. But being near or above the 15 kW threshold affects the whole bill architecture, especially contracted power and penalties.
If you are unsure whether the current setup makes sense, send the invoice for a free business bill check and we can flag whether the tariff structure looks right.
Related business tariff guides
Not sure if your business is on the right tariff?
We can review one recent invoice and tell you whether the tariff setup, contracted power, and commercial structure look sensible for the site.
Check My Business BillFAQ
Can a small business still need 3.0TD?
Yes. A business can be small in size but still cross the threshold because of simultaneous kitchen, HVAC, refrigeration, or hot-water demand.
Is 3.0TD always more expensive than 2.0TD?
Not in a simple headline sense. It is more complex, and it can become much more expensive if contracted power and usage patterns are poorly matched.
What is the clearest sign that a business may be on 3.0TD?
The clearest sign is contracted power above 15 kW or a bill showing a 6-period structure rather than a simpler small-business setup.
Should I switch tariff before switching supplier?
They are related decisions. First make sure the tariff structure fits the site, then compare supplier pricing on the right commercial setup.