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.

Solar and Energy Storage Solutions

Stem’s monitoring and control platform, PowerTrack™, is powered by data collected on site through edge hardware or software ingests. PowerTrack Software works with any equipment. If you can deploy it, we’ll monitor it. 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.

DAS Assembly

Complete, preconfigured monitoring solutions ready for rapid deployment:

  • 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 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.

Note: Enclosure sizing and specifications determined during project quoting.

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

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

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

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

  • Standard offering with Modbus RTU or TCP options

Acuvim

  • Ideal for storage sites requiring dual communications

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 Package

  • Digitizer
  • Class C pyranometer*
  • Temperature sensors entry-level monitoring

Standard Package

  • Adds wind speed and direction to the basic package
  • Enhanced accuracy

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.

* Class C pyranometers can be replaced by another pyranometer if preferred

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
  • Historical time-lapse site documentation

Camera Options

PTZ Camera - Base

  • 33x optical zoom
  • 150m infrared capability

PTZ Camera - Plus

  • Compact design and easier installation
  • Wider area of coverage
  • Superior low-light performance

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 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.

Transformer Monitoring

  • Monitoring of dry contacts including temperature, vacuum, pressure
  • Alarm notifications for early fault detection

Custom Integration

  • Custom device drivers for non-standard equipment
  • Modbus TCP/RTU support for third-party equipment
  • API data output options for external systems
  • Analog signals (mV, mA)
  • Digital signals (dry contacts)

PowerTrack Control Dashboards

Enhance your monitoring system with custom PowerTrack dashboards designed for specific control and monitoring needs. Each dashboard is configured to your site specifications and integrated with your DAS or SCADA hardware.

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.