---
title: "Core ESS Daily Monitoring KPIs"
slug: "core-ess-daily-monitoring-kpis"
updated: 2026-09-17T13:52:23Z
published: 2026-09-17T13:52:28Z
canonical: "docs.bazefield.com/core-ess-daily-monitoring-kpis"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bazefield.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Core ESS Daily Monitoring KPIs

### **Overview**

The *Core ESS Daily Monitoring KPIs* is a Certified Product Point Template for [Energy Storage Sites](/product/docs/energy-storage-site) that defines required normalized real-time performance calculations that scale, or transform several of the points in the [*Core Monitoring KPIs*](/product/docs/core-monitoring-kpis-storage-site). These points are required for the Bazefield installation to function properly across all core applications.

These calculations specifically translate OEM-specific signals into consistent indicators of operational state, availability, communication status, and event conditions. By abstracting vendor-specific complexities, the *Core ESS Daily Monitoring KPIs* enables unified fleet monitoring, reduces configuration overhead, and supports consistent reporting and alarm management across heterogeneous [energy storage sites](/product/docs/energy-storage-site) technologies.

The Core ESS Daily Monitoring KPIs template defines 9 daily aggregation calculations for Energy Storage Sites. These KPIs roll up hourly metrics into daily summaries for data quality, energy throughput, round-trip efficiency, and peak power tracking.

### **Template Definition**

The *Core ESS Daily Monitoring KPIs* is defined below. Calculations are one of the following types:

- **Scale Equations** — Algebraic or logical manipulations of input data done on the [Bazefield edge buffer](/product/docs/edge-buffer)
- **Online Expressions** — Algebraic or logical manipulations of input data done on the central Bazefield data engines (typically on a [storage node](/product/docs/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-defined aggregation interval (e.g. 5 minutes, 10 minutes, 1 hour, etc). These are typically done centrally on a [storage node](/product/docs/storage-node).

Details on the Point Names, Descriptions, and Types are below.

Required for Bazefield Core Dashboard functionality

Optional for common additional data streams/sources

### **Calculation Definition Table**

| Name | Description | Type | Interval | Units |  |
| --- | --- | --- | --- | --- | --- |
| ACDataCoverageDaily | Site-level average of PCS AC Power data coverage for the day | Calculation (Interval Exp.) | Daily | % |  |
| DailyEnergyCharged | Site-level daily total energy charged, summed from PCS units | Calculation (Interval Exp.) | Daily | MWh |  |
| DailyEnergyDischarged | Site-level daily total energy discharged, summed from PCS units | Calculation (Interval Exp.) | Daily | MWh |  |
| DailyThroughput | Site-level daily total energy throughput (charged + discharged) | Calculation (Interval Exp.) | Daily | MWh |  |
| OverallDataQualityDaily | Daily site-level overall data quality score as equal-weighted average of AC Power and State of Charge data coverage | Calculation (Interval Exp.) | Daily | % |  |
| PeakChargePower | Peak charge power input to the site during the day | Calculation (Interval Exp.) | Daily | MW |  |
| PeakDischargePower | Peak discharge power output from the site during the day | Calculation (Interval Exp.) | Daily | MW |  |
| RoundTripEfficiency | Site-level daily SOC-normalized round-trip efficiency (IEEE 2686-2023). Adjusts for net SOC change using TotalStoredEnergy so partial cycles do not distort efficiency. | Calculation (Interval Exp.) | Daily | % |  |
| SOCDataCoverageDaily | Site-level average of PCS State of Charge data coverage for the day | Calculation (Interval Exp.) | Daily | % |  |