From the inverter to the engineer.

Logger, CMS, SCADA, O&M and CRM for solar plants. One team builds all five, so nothing gets lost in between.

Book a demo Explore the stack
Aerial view of a large solar plant in a green valley, with hills behind it
  • Modbus RTU
  • Modbus TCP
  • RS485
  • Ethernet
  • 4G LTE
  • MQTT
  • IEC 61850
  • IEC 60870-5-104
  • OPC UA
  • ONVIF cameras
  • SD store-and-forward
  • Over-the-air updates
  • Power control
  • Weather forecasts
  • PR, CUF and specific yield
  • Deemed generation
  • Push alerts
  • REST API
  • Webhooks
  • Signed checklists
  • Eva fleet assistant
  • Native Android

One vendor, from inverter bus to service desk.

Most plants juggle three vendors' tools that never agree. EVVO Smart is built and run by one team, so every screen reads the same numbers.

  • Hardware and software from one team

    The logger, its firmware, the cloud and the apps are all ours. A change never waits on another vendor.

  • Your data on your own servers

    A cloud master with a live on-premises standby, read-only access for the O&M side and HTTPS on every service.

  • Built for Indian C&I solar

    Tariff slots, deemed generation, DG backup and grid outages are first-class features, not workarounds.

Five products. One line of data.

Each product hands its data to the next. Nothing is typed in twice.

  1. EVVO Data LoggerOn the plant
  2. Evolve CMSIn the control room
  3. EVVO SCADAIn the cloud and on Android
  4. EvvoCare O&MIn the field
  5. EVVO CRMAt the service desk
Open industrial control panel with wiring, breakers and modules

EVVO Data Logger

An industrial logger that speaks Modbus on one side and MQTT on the other, and keeps logging when the internet does not.

  • Any make, any bus. RS485 Modbus RTU and Modbus TCP for up to 32 inverters, meters and weather stations per logger.
  • Never loses a row. MQTT over Ethernet or 4G LTE. Every reading is stored on the SD card first and sent when the link returns.
  • Power control. Export limits and load following written to the inverters every second, with a safe fallback if a meter goes quiet.
  • Managed from afar. Commission devices in a browser, update firmware over the air and reach the logger through a remote tunnel.

HardwareMounted on the plant, beside the inverters

Evolve CMS single-line diagram of a 10 MW block: the HT panel with its relay readings, the 11 MVA transformer and ten inverters with live power

Evolve CMS

Central monitoring and control for utility-scale parks. It runs in the plant's control room, between the loggers and EVVO SCADA.

  • The park on one canvas. A single-line diagram drawn from the plant design, from the 132 kV yard to every inverter, with the cameras one click away.
  • Speaks the substation's protocols. IEC 61850, IEC 60870-5-104, Modbus TCP and RTU, with an OPC UA server and a Modbus TCP server for other systems.
  • Alarms an operator can act on. Grouped alarms with the first-out cause, shelving, guidance for every alarm and the control-room hooter.
  • Safe switching. Work permits with live isolation checks, a two-step confirmation for every command and sequences that need a second person.

WindowsShown with its built-in plant simulator

Simulated 1 MWp rooftop

10:48 IST

AC power
0 kW
Today
0 kWh
Performance ratio
0 %
Irradiance
0 W/m²

ActualForecast

All four inverters online

EVVO SCADA

The plant, live, in the browser and in your pocket. Drag the slider above to replay a simulated day.

  • Telemetry your way. Every inverter, meter and weather station logged at 1, 5 or 15 minutes, with full history and CSV export.
  • The plant as a diagram. Energy-flow and single-line views, plus KPI cards you configure per plant.
  • Expected against actual. Weather forecasts and inverter ratings draw an expected curve, so a shortfall shows the same day.
  • Alerts that mean something. Fault registers decoded into plain names and pushed to Android within seconds.

WebAndroidiot.evvosmart.com

Two engineers in hard hats checking documents beside a row of solar panels

EvvoCare O&M

Operations and maintenance for solar fleets, with the SCADA numbers already inside.

  • Tickets, end to end. Customers raise, plant managers route, engineers close, and every step is timestamped.
  • Checklists with a signature. Weekly, monthly and quarterly schedules built from the plant's own assets, signed on screen.
  • Performance, priced. PR, CUF, specific yield and deemed generation, with lost units traced to grid outages, faults, curtailment or cleaning.
  • Eva, the fleet assistant. Answers in plain words from your real figures only. It never invents a number.

WebAndroidom.evvosmart.com

Service engineer in a hard hat checking a string of solar panels

EVVO CRM

The service desk for EVVO inverters, fed straight from the field.

  • Cases arrive by themselves. Inverter complaints raised in EvvoCare become CRM cases with serial, model, commissioning date and photos.
  • Only what the desk can act on. Inverter categories cross over. Cleaning, civil and cabling work stays inside O&M.
  • One timeline. From open to closed, with the CRM reference shared back to the site's ticket.
  • Records in one place. Customer, address, capacity, warranty and contact, kept with the installation.

Webcrm.evvosmart.com

A pipeline, not a pile of apps.

Data moves one way, from the plant to the desk. Every hop is authenticated, and the O&M side can only read what SCADA writes.

  1. Plant equipmentInverters, meters, weather stations Sends to the logger over RS485, Modbus TCP
  2. EVVO Data LoggerLogs to SD, writes control registers Sends to SCADA over MQTT, Ethernet or LTE
  3. EVVO SCADAHistory, forecasts, alerts, API Shared with EvvoCare through Read-only views
  4. EvvoCare O&MTickets, checklists, performance Passes to the CRM: Inverter complaints
  5. EVVO CRMService cases, warranty, engineers

Store-and-forward

Every reading goes to the logger's SD card before the network. A dropped LTE link or a cloud restart costs nothing: the rows arrive later with their original timestamps.

Read-only by design

EvvoCare reads SCADA through views on a read-only role. It can show the plant's numbers but cannot change them or stall the live system.

Cloud master, local standby

The production database streams every change to an on-premises standby. If the cloud goes away, the data does not.

Telemetry resolution
1, 5, 15 min
Logging interval, selectable per plant
Power-control loop
1 s
Export limit written to the inverters
Modbus devices
32 per logger
RTU or TCP, any manufacturer
Native Android apps
2
EVVO SCADA and EvvoCare

The details that decide a plant's month.

Tariff slots, deemed loss, grid outages and diesel backup are not edge cases on a commercial rooftop. They are the month.

Forecast against actual

Weather forecasts and each inverter's rating give an expected curve. A cloud, a trip and a soiled string each look different.

ActualForecastSimulated day

Export limit, held every second

Set a grid export cap and the logger holds the inverters to it on the Modbus bus, even with the cloud unreachable.

ExportWithout a capSimulated

Deemed generation, attributed

Lost units are detected from SCADA voltages and alerts, then priced with the inverter rating and the month's tariff.

  • Inverter fault150 kWh
  • Grid outage118 kWh
  • Curtailment64 kWh
  • Cleaning due40 kWh

Example month, 372 kWh in total

Alerts that reach the phone

Fault registers decoded into names, not codes, and pushed to the Android app the moment they are stored.

An API you can build on

Account keys, one response envelope, CSV on every series, OpenAPI docs and webhooks.

GET /api/v1/plants/{mac}/daily
    ?from=2026-09-01&to=2026-09-08
X-API-Key: <account key>

{ "ok": true,
  "data": [ { "date": "2026-09-01",
              "kwh": 4812.6 } ] }

Reports the way the plant is billed

  • Generation reports. Daily, monthly and yearly, with a per-inverter breakdown.
  • Tariff slots. Import and export priced by time of day, so the meter reads in rupees as well as kWh.
  • Targets. PR, CUF and specific yield against a target yield you set per plant.
  • Statements. Customer statements and CSV export from EvvoCare.
Ground-mounted solar panels under a blue sky

Every asset on the plant, measured or inspected.

SCADA measures what is on the bus. EvvoCare derives the rest or records the weekly inspection.

  • EVVO string inverter

    Inverter

    AC and DC power, phase voltage, current and frequency, fault registers.

    Measured by SCADA

  • Evolve multifunction energy meter

    Energy meter

    Import, export, power factor and tariff slots.

    Measured by SCADA

  • Weather monitoring station on a pole with a small solar panel

    Weather station

    Irradiance, module and ambient temperature, wind.

    Measured by SCADA

  • Oil-filled distribution transformer

    Transformer

    Loading against its rating, from the LV meter.

    Derived in EvvoCare

  • Evolve HT switchgear panel

    HT panel

    Weekly inspection record with an e-signature.

    Inspection record

  • Evolve LT distribution panel

    LT panel

    Bus voltage and load from the meter, plus the inspection log.

    Measured and inspected

Technician in a hard hat walking across a rooftop solar array with a clipboard

Native Android, not a web page in a box.

Both apps talk to the same APIs as the web. Pull to refresh, light and dark themes, and your phone's own Material colour.

EVVO SCADA app

  • Overview with the KPI cards the web admin configured
  • Reports from the year down to each inverter
  • Alerts, forecast and device detail
  • Push notifications for faults

EvvoCare app

  • Raise, route and close tickets with a full timeline
  • CRM case form with photos of the sticker and installation
  • Checklists signed on screen, with run history
  • Fingerprint or face lock

See it running on your plant.

Tell us about the site. Here is what happens next.

  1. We replyWithin one working day.
  2. We set up a demoWith your own inverters, meters and tariff.
  3. Your logger reportsUsually within a day of commissioning.
Company
Evolve Energy Group, India

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