Overview
The Core Monitoring KPIs is a Certified Product Point Template for Solar Farms which defines required normalized performance key performance indicators (KPIs) that provide first-principles performance metrics for all vendors of Solar Inverters. The metrics here specifically leverage the raw data on Meters as well as Inverter data in the Core Real-Time Data template and the normalized calculations in the Core Real-Time Calculations template, aggretaged at the solar farm level.
These calculations are important for monitoring and optimizing solar farms, as they provide actionable insights into how effectively the system is converting solar energy into usable electricity. Performance KPIs, such as performance index or capacity factor, help identify underperforming inverters or environmental impacts like shading or temperature variations. Production KPIs, like total energy produced or differential power, allow tracking of energy generated over time for comparison with expected values. Together, these metrics enable operators to detect faults early, schedule maintenance proactively, and ensure the solar plant is operating at peak efficiency.
Template Definition
The Core Monitoring KPIs is based on a five-minute aggregation layer, formed from inter-related interval expressions (see below).
Scale Equations: Algebraic or logical manipulations of input data done on the Bazefield edge buffer
Online Expressions: Algebraic or logical manipulations of input data done on the central Bazefield data engines (typically on a storage node). Similar to scale equations in purpose, but done in the centralized architecture.
Interval Expressions: Algebraic, logical, or advanced manipulations of input data done within a pre-define aggregation interval (e.g. 5 minutes, 10 minutes, 1 hour, etc). These are typically done centrally on a storage node.
Required for Bazefield Core Dashboard functionality
Optional for common additional data streams/sources
Name | Description | Type | Int. | |
|---|---|---|---|---|
CapacityFactorAvail | Sum of inverter capacity (rated power) of inverters available. ActivePowerINV divided MaxCapacityAvailable | Calculation (Interval Exp.) | 300 s | |
CapacityFactorINV | Sum of active power from inverters divided by site capacity. | Calculation (Interval Exp.) | 300 s | |
CapacityFactorMeter | Total active power from check meter divided by site capacity. | Calculation (Interval Exp.) | 300 s | |
DegradationMultiplier | Degradation multiplier to adjust Theoretical Power based on Inverter degradation | Calculation (Interval Exp.) | 86400 s | |
Insolation | Insolation energy calculated from average site irradiance, converted to kWh/m2 | Calculation (Interval Exp.) | 300 s | |
PerformanceIndex | Avg Performance Index based on the inverter active power divided by theoretical power when inverter is running | Calculation (Interval Exp.) | 300 s | |
PerformanceRatio | Daily Performance Ratio for the solar site based on energy produced, capacity, and insolation | Calculation (Interval Exp.) | 86400 s | |
TheoreticalPower | Sum of inverter TheoreticalPower | Calculation (Interval Exp.) | 300 s | |
TotalEnergyProduced | Sum of total energy produced during interval from all inverters. Expressed in MWh | Calculation (Interval Exp.) | 300 s | |
TotalEnergyExpected | Sum of total energy expected during interval from all inverters. Expressed in MWh | Calculation (Interval Exp.) | 300 s |