Solar Farm

The Solar Farm is a core asset type in the Bazefield platform representing a physical solar plant. It serves as the foundational asset for collecting, organizing, analyzing, and visualizing operational and performance data. One solar site is uniquely identified in the Bazefield platform. It is linked to sub devices including inverters, weather stations, meters that form the solar farm asset hierarchy.

Functional Description

A Solar Farm (also known as a Solar Power Plant) is a utility-scale facility designed to collect solar energy and convert it into alternating current (AC) electrical power. This is achieved through a coordinated array of solar panels, which collect and produce direct current (DC) power, as well as connected inverters to convert the power to alternating current. The panels may be mounted on the ground or rooftop, and may be arranged for string or central inverter types. The combined electrical output of these inverters is typically collected at an on-site substation, where it's transformed and fed into the electrical transmission grid via a single point of interconnection (POI).

In Bazefield, the Solar Farm object type represents this entire power-producing entity — enabling monitoring, control, and reporting at the plant level. It serves as the top-level structure for aggregating turbine-level data, managing grid-level compliance, and analyzing overall site performance.

Logical Site

A solar farm asset type is specifically a Logical Site.

In Bazefield, the concept of a site is split into two layers — Physical Site and Logical Site — to provide accurate modeling of complex facilities that host multiple grid-connected systems. A Logical Site represents a distinct operational unit within a physical facility, usually aligned with a single point of interconnection (POI) to the electrical grid. It includes the set of assets (e.g., turbines, inverters, batteries) and control boundaries responsible for generating or storing power under a specific market registration, utility agreement, or revenue stream.

A Physical Site represents the shared physical facility or location where power-generating assets are installed. This includes common infrastructure such as access roads, fencing, communications equipment, and substations. A physical site typically maps to a real-world geographic footprint and can encompass multiple independent or dependent logical sites.

An example of how to use physical site asset types and logical site asset types together in modelling is shown below. Here a large, solar site with attached storage is modelled as Solar & Storage Facility, with logical solar site PV Site and Attached ESS as children.

A solar facility with attached storage modelled using Physical and Logical sites.

Core Data Model

While the data model of solar farms will vary according to the design, Bazefield offers a pre-installed CORE data model to account for the most common points, events, and attributes relevant to all solar farm set ups. Model by model variations are then handled typically through smart Model Inheritance.

Example of a common modeling strategy to encompass variations of data between inverter manufacturers and site specific SCADA configurations at the plant level.

Core Attributes

Attributes are fixed key, value pairs used to represent non-time series data associated with each asset (read more about Attributes). While attribute values can differ from asset to asset, critical shared (e.g. CORE) attributes defining a wind turbine asset type, pre-installed in Bazefield are described below. These are often pre-requisite data required for the Bazefield applications to function fully.

Required for basic Bazefield Core functionality

Optional attributes for common additional modelling

Attributes marked with “** “ are only applicable to North American clients with wind farms requiring to submit GADS Performance and event reporting.

Depending on your version of Bazefield, there may be additional advanced attributes not listed here to support data integrations or migrations with other systems.

Attribute	Key	Description
PV Installed Capacity (MW DC)	pvInstalledCapacity	The total capacity of all components on the DC side. It is theoretically equal to the sum of the capacity of all components on the DC side of all inverters.
Latitude	latitude	The latitude of the power plant.
Longitude	longitude	The longitude of the power plant.
Node ID	nodeId	System configuration. Used by the system for location of data source (Buffer/Edge DataEngine Node ID)
Site Rated Power (kW AC)	siteRatedPower	Enter the maximum plant production at the point of interconnection - for the Map table
Number of Assets	numberOfAssets	Number of Inverters for this site. They are used in calculations and applications to represent the number of assets.
Time Zone	timeZone	Select this site local time zone.
Notification Roles	notificationRoles	Default Notification Role
Default Allocation Type	defaultAllocationType	Default Allocation Type for Asset Operations
Weather Forecast	weatherForecast	System configuration. Integration Service/weather forecast data provider.
Planned Availability Interval	plannedAvailabilityInterval	Availability Planner configuration. Default/Fixed interval in minutes used for planned availability.
External Device ID	externalDeviceId
Inverter Rated Power (MWac)	inverterRatedPower	The rated output power from the AC side is equal to the sum of all inverters rated capacity from the AC side.
Commissioning Date	commissioningDate	When the power plant is connected to the grid.
Installation Type	installationType	The terrain of the site.
City ID	cityId	City ID for Solar AI
Currency (Current Code)	currency	Preferred currency to display. Country Currency Codes ISO 4217 (i.e. USD, EUR, NOK..)
Central Inverter Amount	centralInverterAmount	The number of the central inverters onboarded to this site.
String Inverter Amount	stringInverterAmount	The number of the string inverters onboarded to this site.
Weather Station Amount	weatherStationAmount	The number of physical weather stations that are onboarded to this site.
DC Combiner Box Amount	dcCombinerBoxAmount	The number of the DC combiner boxes onboarded to this site.
Energy Meter Amount	energyMeterAmount	The number of energy meters that are onboarded to this site.
Grid Meter Amount	gridMeterAmount	The number of grid meters that are onboarded to this site.
Other Meter Amount	otherMeterAmount	The number of other meters onboarded to this site.
Wash Cost [Currency/kWdc]	washCost	Wash Cost [Currency/kWdc]
Nominal Plant Capacity (MW AC)	nominalPlantCapacity	Enter the maximum authorized plant production at the point of interconnection if limited by a plant controller. If not limited, leave empty.
Delta Temp Mod from Sunlight (a)	deltaTempModSunlight	Factor for Bifacial sites.
Delta Temp Mod Wind Speed (b)	deltaTempModWindSpeed	Factor for Bifacial sites.
PVsyst PR	pvsystPr	Theoretical PR, 0.78 by default if left empty.
Manufacturer Weighted Efficiency	manufacturerWeightedEfficiency	Input Manufacturer Weighted Efficiency in decimals, example 0.985.
Albedo Factors	albedoFactors	Monthly albedo values for bifacial sites. Make sure to add exact 12 values separated by a comma. Example: 0.4,0.4,0.25,0.25,0.25,0.25,0.25,0.25,0.25,0.25,0.25,0.4
Calculate Timezone	calculateTimezone	Indicate a different timezone for calculations within EnOS timezone batches.
Onboarding Date	onboardingDate	The date the site is connected and uploads data to our system, with daily KPI also starting to generate. It should be later than the commissioning date. From the commissioning date to the day before onboarding, KPI needs to be initialized using the offline record.
PPA Rate (Unit/MWh)	ppaRate	Used to calculate the revenue. Revenue = production x unit price of electricity. The default value is 0.88 if this field is left blank.
Altitude [m]	altitude	Altitude of this site.
Observation Time	observationTime	Used for to set the calculation method for calculating the 5 min average value. Standard should be START.
Expected Frequency (s)	expectedFrequency	Unit is seconds; default value of 300 (i.e., 5min).
Meter ID	meterId	Meter ID
Energy Model Reference	energyModelReference	Used for display of loss decomposition-theoretical loss, typically given in PVsyst reports or similar. Example: {"expected_prwc": "80.45", "energy_production_assumption": "1380", "lost_shading": "2", "lost_soiling": "1.5", "lost_module_thermal": "5", "lost_reactive_power": "0.1", "lost_efficiency": "1", "lost_down_time": "2", "lost_clipping": "1.7", "loss_night_time": ""}
Ensight Arguments	ensightArguments	This attribute will contain multiple parameters that can be set to adjust algorithms or the way that Solar is executed.
DC System Voltage (V DC)	dcSystemVoltage	1000V or 1500V: Enter the value closest to the maximum DC input voltage of the inverter.
Corrective Action Arguments	correctiveActionArguments	Corrective Action Arguments