Product family
Power, solar and storage
Transformers, solar inverters and modules, generator sets, traction batteries and EV chargers. How their energy test behaves, what Energy Mark reads early, and where each product is regulated.
The test
What the energy test looks like
Transformers go through a temperature-rise test that runs until oil and winding temperatures settle. Inverters and chargers are measured at several load points. Batteries are cycled, sometimes for weeks.
The early read
What Energy Mark reads
- Oil and winding temperature trend
- Losses at each load point
- Charge and discharge curves
- Ambient and cooling conditions
It predicts: Final temperature rise and losses, conversion efficiency, or capacity retention, with a range. The certified result still comes from the full test.
Products
8 product categories in this family.
References show the test standard or labelling programme listed for each market. A dot means the category is not listed for that market.
| Product category | India (BEE) | European Union | United States | Australia and NZ |
|---|---|---|---|---|
| Distribution transformers | IS 1180 (Part 1):2014, IS 2026 (Parts 1, 2 and 3):1977 | · | 10 CFR Part 431 | · |
| Power transformers | · | Power transformers | · | · |
| Grid-connected solar inverters | IS 17980:2022 / IEC 62891:2020 | · | · | · |
| Solid state inverters | BEE Schedule 17 | · | · | · |
| Solar photovoltaic modules | BEE Schedule 35 | · | · | · |
| Diesel generator sets | BEE Schedule 18 | · | · | · |
| High-energy Li-ion traction batteries and systems | BEE Schedule 29 | · | · | · |
| EV chargers | BEE Schedule 41 | · | · | · |
Standards by market
The band always comes from the formula your market publishes.
India
IS 1180 and IS 2026 for distribution transformers, IS 17980 for grid-connected solar inverters, BEE Schedules 17, 18, 29, 35 and 41.
European Union
Ecodesign for power transformers.
United States
DOE 10 CFR Part 431 for distribution transformers.
Other markets
The applicable national standard and its published formula.
Lab assessment
Find out if your test data can predict your ratings.
We look at your logger exports and completed tests, and tell you plainly whether Energy Mark can work in your lab.