DAS and SCADA Solutions

Solar array with a DAS enclosure in the foreground

DAS and SCADA Solutions

Stem’s Data Acquisition System (DAS) and Supervisory Controls and Data Acquisition (SCADA) systems for solar and energy storage assets are preconfigured to your specifications for fast, plug-and-play installation.

Row of energy storage containers at a solar site

Solar and Energy Storage Solutions

Stem’s monitoring and control platform, PowerTrack Cloud, is powered by data collected on site through edge hardware or software ingests.

PowerTrack Cloud works with any equipment. With 8,000+ drivers and point maps, our technology-independent platform ensures universal compatibility across manufacturers and asset types. We provide standard and custom configurations to suit projects of any size, from small commercial installations to utility-scale deployments.

Preconfigured DAS enclosure with mounted and wired hardware

DAS Assembly

Complete, Preconfigured Monitoring Solutions Ready for Rapid Deployment

Stem’s Data Acquisition System (DAS) and Supervisory Controls and Data Acquisition (SCADA) systems for solar and energy storage assets are preconfigured to your specifications for fast, plug-and-play installation.

  • Complete with all necessary DAS system hardware
  • Preconfigured for plug-and-play capability with PowerTrack Software
  • Hardware mounted and pre-wired
  • NEMA 4/4X rated enclosures for exterior mounting
  • Indoor mounting hardware included
  • Built to your specifications
  • UL 508A Listed

Quality Assurance

End-to-end DAS solutions from Stem are tested, configured, assembled, and wired in our ISO 9001 certified facility in Longmont, CO.

System Configurations

Your project requirements drive your hardware solution. Whether you need a simple all-in-one kit or a sophisticated custom SCADA system, Stem delivers the right combination of performance, flexibility, and value.

Simplified Solution

PLCS400

Your site is small and simple, so your DAS solution should be easy.

All-in-one DAS kits provide simple, cost-effective monitoring for smaller distributed generation projects. Preconfigured and compatible with a wide range of inverters, PLCS400 systems deliver essential monitoring capabilities without custom engineering overhead.

  • Limited to systems with 400A or less per phase at peak output
  • Includes revenue-grade meter and basic weather sensors capable of supporting expected energy modeling in PowerTrack
  • Cellular modem and data plan included
  • Data uploads to PowerTrack at reduced frequency
  • Data stored as 15-minute average values
  • 5-year monitoring term

Commercial-Scale

PLCS600

Eliminate the custom hardware quoting process with the PLCS600.

Designed for rooftop and carport systems, the PLCS600 includes a revenue-grade meter and several weather station options to fit a variety of preferences.

  • System size: 325kW-1MW AC
  • Single metering point
  • No restriction to maximum metered current
  • Data upload standard: 1-3 minute frequency
  • Weather station options available
  • Agency reporting available
  • 5-year monitoring term

Bespoke Engineering

Custom DAS

Your site is unique, so your DAS or SCADA solution should be as well.

Provide our team with your site documentation and design parameters, and we’ll engineer a custom hardware solution designed exclusively for your system. Ensure you get all the data you want without purchasing extraneous hardware you don’t need.

  • System size: 325kW+ AC
  • Flexible data logger options
  • Advanced controls capable (SCADA, PPC, plant control)
  • Data upload standard: 1-3 minute frequency with faster options available
  • Comprehensive weather monitoring options
  • Backup power solutions
  • Custom PowerTrack dashboards available
  • Full commissioning support

Hardware Components

Stem NEMA 4/4X rated DAS enclosure

Stem offers a range of NEMA 4/4X rated enclosures designed for both indoor and outdoor installations. All enclosures come with standard screwdriver lock with options to add key or padlock kits. Other options include vented models for UPS configurations and stainless steel or plastic material options.

Custom server racks for indoor rooms or climate-controlled towers are also available. We offer a variety of size options for enclosures. Our team will work with you to select the optimal enclosure for the system.

Selection criteria: Enclosure sizing and specifications determined during project quoting.

Data loggers serve as the intelligent gateway between site equipment and PowerTrack Cloud. Stem offers a range of hardware options to optimize function and cost while supporting diverse data collection strategies.

PowerTrack Logger

PowerTrack Logger

The PowerTrack Logger is a next-generation gateway device engineered for commercial and industrial (C&I) to utility-scale installations. This solution greatly increases datalogging capabilities while serving as a backwards compatible drop-in replacement for the PowerLogger 1000. The compact datalogger delivers better performance, futureproof local AI processing, and plug-and-play configuration methodology.

PowerLogger 1000

PowerLogger 1000

Our base, compact gateway is complete with a touchscreen and numerous on-site troubleshooting features to empower technicians to commission and troubleshoot communications without complicated software tools. Remote troubleshooting capabilities enable our support team to diagnose and resolve issues without site visits in most cases.

PowerManager 2200

PowerManager 2200

Upgrade to PowerManager 2200 to support more devices, implement limited export control, add high-frequency data logging, and access advanced control capabilities.

Selection criteria: Data logger selection based on device count, control requirements, and project specifications.

Revenue-grade metering solutions for low and medium voltage applications. All meters include LCD displays and support standard communication protocols.

Metering Features:
  • Revenue-grade energy measurement for financial settlement
  • Power quality monitoring and analysis
  • Dual communications for storage site redundancy
  • Support for various current transformer (CT) configurations (5A, Rogowski, millivolt)
  • Agency reporting for RECs

Available Meter Options

Elkor energy meter
Elkor

Standard offering with Modbus RTU or TCP options.

Acuvim energy meter
Acuvim

Ideal for storage sites requiring dual communications.

SEL energy meter
SEL

Most robust option with dual communications.

Important note: CTs not provided for systems over 600V. Customer must supply metering class potential transformers (PTs) if metering above maximum voltage specification.
Selection criteria: Meter selection based on voltage requirements, CT configuration, and communication needs.

Stem offers comprehensive weather monitoring solutions ranging from entry-level packages to fully customized sensor arrays. Choose pre-configured packages for fast deployment or work with our team to design a custom configuration matching your exact project requirements. Virtual weather linking is available to pull data from nearby sites when physical sensors aren’t practical.

Weather Station Features:
  • Expected energy modeling in PowerTrack
  • Performance ratio calculations
  • Soiling loss detection
  • Accurate availability reporting
  • Real-time irradiance correlation
  • Optional satellite/virtual irradiance

Measured Parameters

Irradiance Sensors
  • Pyranometer (thermopile ISO 9060 Class A, B, or C) - Available in any orientation: Plane of Array (POA), Global Horizontal Irradiance (GHI), Backside Plane of Array (BPOA), or Reflected Horizontal Irradiance (RHI)
  • Reference cell (silicon cell) - POA or BPOA configurations
Temperature Sensors
  • PT100/1000 RTD
  • Back of module temperature
  • Ambient air temperature
Meteorological Sensors
  • Wind speed and direction
  • Barometric pressure
  • Relative humidity
  • Precipitation type and quantity
  • Module soiling

Vendor Options

  • IMT
  • Kipp & Zonen
  • Hukseflux
  • Lufft
  • Atonometrics

Package Tiers

Basic weather station package
Basic Package
  • Digitizer
  • Class C pyranometer*
  • Temperature sensors entry-level monitoring
Standard weather station package
Standard Package
  • Adds wind speed and direction to the basic package
  • Enhanced accuracy
Full weather station package
Full Package
  • Includes additional back of module temperature sensor
  • Two Class C pyranometers*
  • Additional Class C pyranometer*
Custom Configuration

Match exact project specifications with upgraded sensor accuracy, multiple measurement orientations, atmospheric sensors, and module soiling detection. We work with industry-leading vendors to source the right equipment.

*Additional Class C pyranometer ↩︎

Selection criteria: Weather station selection based on accuracy requirements, performance guarantee needs, and site accessibility

Reliable power solutions with optional UPS backup for continuous operation during outages.

What Backup Power Enables:
  • Continuous data collection during grid outages
  • No data gaps in historical records
  • Sustained communications and control capabilities
  • Protection of expensive networking equipment

Standard Power Supply

  • Multiple wattage options, sized to meet the needs of your system
  • 100-480 VAC, line-to-neutral or line-to-line inputs available. 600V and greater require a stepdown transformer for power

UPS Systems

  • Backup duration sized to meet system needs (notify your Stem salesperson on your backup duration requirements)
  • Standard and extended temperature ranges available

Note: UPS sizing based on total system power draw and required backup duration. Longer backup durations may require expanded enclosures or separate battery cabinets.

Robust connectivity solutions including cellular modems, network switches, and fiber optic infrastructure for reliable site communications.

Network Options

  1. Network Provided by Stem (Recommended)
    • Cellular connectivity on a Stem VPN for secure and reliable connection.
    • Local Area Network (LAN) design, including IP address scheme and assignment, provided and documented by Stem.
    • Hardware arrives to the site preconfigured without any additional communications configuration for Stem-provided hardware devices.
  2. Provide Your Own Site Network
    • Purchase internet and provide your own firewall/router/modem to support your own particular network and security policies.
    • Keep the IT management within your own team; Stem hardware can be configured for compatibility with any network or internet service provider.
    • Provide details about LAN settings and desired device IP addresses in advance and Stem will pre-configure hardware for turnkey operation with your network eliminating the need for on-site technicians to configure network settings.

Network Equipment

Network Switches
  • Unmanaged: Suit most small to medium system needs at lower cost.
  • Managed: Redundant ring architecture, network address translation, and other Layer 2 and Layer 3 management features available.
Fiber Optic
  • Run long cables without communication loss.
  • Impervious to electromagnetic interference.
  • Ideal for communication paths parallel to high power circuits.
  • Single-mode and Multi-mode fiber supported.
Security
  • Layer 7 NERC CIP-compliant firewall devices available.
  • High security interfaces with internet or third-party devices.

Note: Network architecture designed during site configuration based on equipment locations and communication requirements.

Professional-grade surveillance cameras for remote site monitoring and security.

What Camera Systems Enable

  • Remote visual verification of site conditions
  • Security monitoring and incident documentation
  • Visual troubleshooting without site visits
  • Support for various current transformer (CT) configurations (5A, Rogowski, millivolt)

Camera Options

PTZ camera, base model
PTZ Camera - Base
  • 33x optical zoom
  • 150m infrared capability
PTZ camera, plus model
PTZ Camera - Plus
  • Compact design and easier installation
  • Wider area of coverage
  • Superior low-light performance
Fixed camera
Fixed Camera
  • Cost-effective monitoring
  • Specific area coverage
  • Manual positioning

Integration note: Cameras integrate with PowerLogger and PowerManager platforms.
Selection criteria: Camera selection based on coverage area requirements, lighting conditions, and budget.

Power plant controller and telemetry gateway hardware

Power Plant Controllers (PPCs) and telemetry gateways provide utility-grade control and automation for advanced plant operations. Stem delivers comprehensive solutions using industry-leading hardware from vendors including SEL and other premier manufacturers.

What Plant Controllers Enable

  • Real-time telemetry to utility/ISO
  • Advanced power plant control (PPC)
  • Voltage regulation and frequency response
  • Ramp rate control and curtailment management
  • Zero net export control
  • Custom automation sequences

Selection criteria: PPC selection will be based on plant size, control modes, control methods (open vs. closed-loop), and interconnection requirements.

PowerTrack Control Dashboards

PowerTrack Basic Inverter Control dashboard

Remote on/off Capabilities with Status Monitoring

The Inverter Control Dashboard gives operators granular, device-level control over individual inverters throughout the plant. Operators can start and stop inverters remotely while monitoring key performance data.

Remote Control:

Individual inverter remote stop/start controls allowing rapid response to clear/reset inverter faults and a single interface to shut down inverters for inspection and maintenance tasks.

Monitoring:
  • Per-device KPI monitoring including output and operating status.
  • Integrated with PowerTrack’s live data pipeline for accurate, low-latency telemetry.
Scalability

Supports any number of individually controlled inverters. For plants with larger inverter counts, our Advanced Inverter Control dashboard adds batch controls for faster, plant-wide operation.

Compatibility:
  • Currently supports most models of: Chint, Solectria, Canadian Solar, Ginlong, SMA, ABB, Sungrow, and PV Powered inverters.
  • More models as requested where Modbus controls are supported.
PowerTrack Advanced Inverter Control dashboard

Granular, Device-level Control with Status Monitoring

The Advanced Inverter Control Dashboard gives operators granular, device-level control over individual inverters and batch control throughout the plant. Operators can start and stop inverters individually and globally while monitoring key performance data.

Remote Control:

Individual and batch inverter remote stop/start controls allowing rapid response to clear/reset inverter faults and a single interface to shut down inverters for inspection and maintenance tasks.

Monitoring:
  • Per-device KPI monitoring including output and operating status.
  • Integrated with PowerTrack’s live data pipeline for accurate, low-latency telemetry.
Scalability

Deployable from a single inverter to full plant-level control.

Compatibility:
  • Requires a PowerTrack SCADA datalogger (PM2k).
  • Currently supports most models of: Chint, Solectria, Canadian Solar, Ginlong, SMA, ABB, Sungrow, and PV Powered inverters.
  • More models as requested where Modbus controls are supported.
PowerTrack Plant Control dashboard

PPC Control and Curtailment Management

The PPC Dashboard delivers plant-level curtailment and setpoint management in a single, intuitive interface. Designed for grid compliance and active power management, it gives operators precise control over plant output while supporting automatic voltage regulation without leaving the PowerTrack platform.

Control:
  • Plant-level active power curtailment controls.
  • Real and reactive power setpoint configuration.
  • Power Factor setpoint configuration.
  • Automatic Voltage Regulation (AVR) mode management.
Monitoring:

Integrated with PowerTrack’s live data pipeline for accurate, low-latency feedback of KPIs and commanded vs. actual plant output.

PowerTrack Tracker Control dashboard

Position Control at Motor or NCU Level

The Tracker Control Dashboard enables centralized management of solar tracking systems, from global fleet-wide stow commands to fine-grained motor-level position adjustments. Operators can respond quickly to severe weather events or maintenance needs without dispatching field crews.

Control:
  • Global stow commands for full-site weather or emergency response.
  • Motor-level stow and position setpoint controls for targeted adjustments and maintenance.
Monitoring:

Real-time position and command feedback across the tracker network.

Operational Efficiency:
  • Streamlines maintenance workflows with precise per-motor control.
  • Reduces field crew dispatch requirements for routine positioning tasks.
Compatibility:

Currently supports most models of Array Technologies, NEXTracker, OMCO, Arctech, GameChange, SolarFlexRack, TerraSmart, Voyager, and Trina Solar trackers.

Available control commands can vary between manufacturers. Additional Modbus-compatible models available upon request.

PowerTrack Recloser Control dashboard

Manual Open/Close with Status Monitoring

The Recloser Control Dashboard provides operators and engineers with a centralized interface for remotely managing reclosers and protective relays across the solar facility. Real-time breaker status visibility combined with direct open/close controls reduces the need for on-site intervention and improves operational safety.

Remote Control:
  • Remote open and close controls for reclosers and protection relays.
  • Reduces truck rolls for switching operations.
Monitoring:
  • Requires a PowerTrack SCADA datalogger (PM2k).
  • KPI panel for at-a-glance site production.
Security:

Built on PowerTrack’s secure, role-based access framework.

Compatibility:
  • Schweitzer Reclosers and Relays (e.g. SEL-651R, SEL-751, SEL-751A, SEL-851).
  • Beckwith M-76xx Protection Relays.
  • ABB SACE Emax Relays.
  • NOJA Power Recloser Controllers.

More models as requested where Modbus controls are supported.

PowerTrack Site Layout dashboard

Improved Visualization of Monitoring and Alerts with a Site Map

The Site Layout Dashboard transforms customer-provided electrical drawings into an interactive, data-rich monitoring interface. By overlaying live performance widgets directly onto actual site diagrams, operators and engineers can instantly correlate physical layout with real-time string and array-level data, bridging the gap between as-built documentation and performance monitoring.

Visualization:
  • Utilizes actual customer electrical drawings as the dashboard background for site-accurate context.
  • Overlays interactive Panel Array widgets onto the drawing to display inverter or string-level DC current performance.
  • Color-coded performance indicators allow instant identification of underperforming or faulted strings.
Monitoring:
  • Live DC current data bindings updated in real time via PowerTrack’s data pipeline with date and time slider options to quickly view historical performance.
  • Integrated weather reporting widget for correlating environmental conditions with string performance.

Supports multi-pad and multi-array sites.

PowerTrack custom display dashboard

Tailored to Your Operational Needs

Custom Display dashboards are fully bespoke monitoring and control interfaces built to meet requirements that fall outside PowerTrack’s standard dashboard templates. Whether replicating an existing SCADA single-line diagram, displaying device-specific metrics, or combining monitoring with interactive controls, we can work with you to design a custom display to match your project’s unique operational needs.

Flexibility:
  • Fully custom layouts built to customer specifications — no constraints from pre-defined templates.
  • Supports a wide range of widget types including gauges, bar indicators, text displays, icons, charts, and control interfaces.
Data & Controls:
  • Live data bindings for real-time display of key device metrics such as power, voltages, current, breaker/relay statuses, inverter fault/operational statuses, and any other available telemetry.

Interactive control elements including buttons with scripted actions for device commands.

Maximize Your Revenue Throughout the Project Lifecycle

Configuration Services

  • Advanced Site Configuration: Complete system setup and optimization.
  • Custom Driver Development: Integration support for non-standard devices.
  • Project Management: Coordinated deployment and support.
  • Agency Reporting: SREC and regulatory compliance setup.

Commissioning Support

  • Remote Commissioning: Virtual support for system validation.
  • On-Site Commissioning: In-person support for complex system deployments.
  • System Validation: Comprehensive functional testing.
  • Training: Operator and maintenance instruction.

Service Terms & Notes

  • Device monitoring available in 1- or 5-year terms.
  • Monitoring includes data storage and maintenance for supported devices.

Ready to Discuss Your Project?

Our sales team is standing by to create your custom specifications for repeatable solutions across your portfolio.

Phone Number: +1 (866) 303-5668Email: sales@stem.com