# EC-KPI-17-A Heat generation efficiency (source A)

> Heat generation efficiency (source A): gas/oil 80% · biomass 75% · electric 98% · heat pump COP 2.0 · CHP QI 105. Energy Centre KPI, HNTAS · assessed. Monitoring points, threshold and calculation.

| | |
|---|---|
| Element | Energy Centre (EC) |
| Standing | HNTAS · assessed |
| Monitoring points | EC · heat meter kWh; gas meter m3Gas, kWh |
| Threshold | gas/oil 80% · biomass 75% · electric 98% · heat pump COP 2.0 · CHP QI 105 |
| Calculation | heat out ÷ fuel in (boiler gross; HP CoP uses emeter). Uses design/efficiency |
| Period | Monthly |


## Discuss this KPI

Is the threshold right? Does the calculation match what you compute on your networks? [Comment on EC-KPI-17-A](https://github.com/heatweb/HNQAP/issues/new?template=kpi-comment.yml&kpi=EC-KPI-17-A&title=EC-KPI-17-A%3A%20), or report how it behaves on your data. Comments are public and are read before every revision.

## Machine-readable

This KPI is a row of [kpi-reference.json](/data/kpi-reference.json) (element `EC`, code `EC-KPI-17-A`). The [notation and rules](/kpis/#how-to-read-the-tables) that apply to every KPI are on the reference page.

## Related KPIs on the energy centre

- [EC-KPI-01 Energy Centre ARMS connectivity](/kpis/ec-kpi-01/)
- [EC-KPI-02 Energy Centre monitoring point data completeness](/kpis/ec-kpi-02/)
- [EC-KPI-03 Energy Centre monitoring points operational](/kpis/ec-kpi-03/)
- [EC-KPI-04 Energy Centre unplanned interruptions](/kpis/ec-kpi-04/)
- [EC-KPI-05 Energy Centre planned interruptions](/kpis/ec-kpi-05/)
- [EC-KPI-06 Energy Centre average flow temperature](/kpis/ec-kpi-06/)
- [EC-KPI-07 Energy Centre average return temperature](/kpis/ec-kpi-07/)
- [EC-KPI-08 EC flow temperature variance from set point](/kpis/ec-kpi-08/)