Solar panels don't have A–G energy labels — so how do you compare them?

Solar panels don't have A-G energy labels — so how do you compare them ?

Many people look for "class A" on hobs... but it doesn't exist . The European Commission confirms: there are ecodesign requirements, but there is no energy labeling (A-G) for hobs/cooktops.

1) What does the law use to measure plate efficiency (the "secret" of Wh/kg)?

The EU ecodesign regulation for signs (Reg. 66/2014) defines:

  • For electric hobs : maximum consumption limit measured in Wh/kg (energy per kg of water heated in a standardized test).

  • For gas hobs : minimum efficiency limit in % .

In other words: when a supplier gives you Wh/kg (electric/induction) or % (gas), they are speaking "EU standard" language.

2) "Topten" criterion (very good for premium filtering)

To appear in the Topten, plates need to have ≤ 180 Wh/kg (criterion based on Reg. 66/2014).
➡️ This could become a filter in the UMBOX: “High efficiency (≤180 Wh/kg)” .

3) How to compare in the real world (what translates into sales)

In addition to technical criteria, the client decides based on:

  • Type: induction vs ceramic vs gas

  • Total power (kW) + Booster (speed)

  • Zones and sizes (will the pots fit?)

  • Flex/Bridge (for grills/grills)

  • Power management (prevents tripping the panel)

  • Safety : Child lock / automatic shut-off

  • Standby: license plates also fall under applicable standby rules (EU).

4) Copy ready for collection description (Shopify)

  • "The panels don't have A-G labels; we compare them by Wh/kg (electrical) and % (gas) according to ecodesign."

  • Premium filter: ≤ 180 Wh/kg (high efficiency).

FAQ

Do the hobs have an A–G energy rating?
No — there is ecodesign, but there is no A-G label for hobbies.

What does Wh/kg mean in electric heating elements?
It is the normalized (ecodesign) test consumption metric used for efficiency limits.

Is there a "good" value for Wh/kg?
As a "premium" reference, Topten uses ≤ 180 Wh/kg as a selection criterion.