Kverneland Energi / Knowledge

Glossary of terms

Energy, power, cycle and kWh? Wondering what the terms in our industry mean?

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Power (kW)

Performance from solar cells, battery pack or generator.

Energy (kWh)

Energy [kWh] = Power [kW] * Time [h]
Example: If the generator runs optimally for one hour with an output of 128 kW, 128 kWh of energy is produced.

Installed capacity of solar cells (kWp)

p = peak

How much power the photovoltaic system has and will be able to deliver under good conditions. Good conditions are defined based on STC (standard test conditions).

Yield factor (kWh/kWp)

Energy production in relation to installed kWp. In southern Norway, this is between 800-1000 kWh/kWp.

SoC percentage

State of Charge. Expressed as a percentage of the battery’s charge level (how full the battery is). Scale from 0-100%.

DoD (%)

Depth of Discharge. For our batteries, this is 100%, which means that 100% of the stated battery storage capacity is actually available. If the battery pack has 173 kWh stated as storage capacity, the battery will have 173 kWh actually available.

Cycle

A cycle is a charge from 0% to 100% and discharge to 0% again.

SoH (%)

State of Health. The condition of the battery today compared to the condition of the battery at the time of production. This means that the SoH will be 100% when the battery is installed.