Solar monitoring and asset performance software: 29 tools from 14 countries (2026)
By The PV Index · Published 6 November 2026 · Last updated 6 November 2026. Counts as of 2026-11-06.
The PV Index lists 29 solar monitoring and asset performance tools from 14 countries: 2 free, 4 freemium and 23 paid. They fall into five groups: residential and commercial inverter portals (6), utility-scale SCADA and APM (9), drone and thermography analytics (2), off-grid and hybrid monitoring (6) and performance analytics, diagnostics and CMMS (6). The United States has the most (6), and 18 come from Europe.
There is no single best solar monitoring software: a homeowner checking an Enphase or SMA system needs a different tool from an IPP running SCADA across 50 plants, or an O&M team reviewing drone thermography. This guide groups every Monitoring & Asset Performance listing in the directory by job, with its pricing model and a one-line summary taken from its listing. Each name links to a listing page with the official website. For design and simulation tools, see our solar design software guide.
Jump to: Residential inverter portals · Utility SCADA and APM · Drone and thermography · Off-grid and hybrid · Analytics and CMMS · free and freemium · by country · how to choose · sensors hardware
Residential and commercial inverter monitoring portals (6)
For homeowners, installers and C&I operators who need production data from a specific inverter brand or a multi-brand app.
| Tool | Country | Pricing | What it does |
|---|---|---|---|
| Enphase App (Enlighten) | United States | Freemium | Cloud monitoring for Enphase microinverter and battery systems with per-panel production data; the installer-facing Enlighten Manager supports fleet management. |
| Fronius Solar.web | Austria | Freemium | Fronius' online monitoring platform for PV systems with Fronius inverters, with the companion Solar.creator design tool. |
| Sunny Portal (SMA) | Germany | Free | SMA's online monitoring portal for PV systems with SMA inverters. |
| SOLARMAN | China | Freemium | Manufacturer-spanning PV monitoring and smart energy management platform by IGEN Tech (SOLARMAN Smart for homeowners, SOLARMAN Business for professionals), managing over 220 GW of global capacity across grid-tie, off-grid and storage systems. |
| Solar-Log | Germany | Paid | Hardware dataloggers plus the Solar-Log WEB Enerest cloud portal for monitoring and feed-in management of residential to commercial PV plants. |
| Solytic | Germany | Freemium | Berlin-based manufacturer-independent PV monitoring and analytics platform (also white-labeled, e.g. |
Utility-scale SCADA, plant control and asset performance management (9)
For IPPs, asset managers and O&M teams running commercial and utility fleets who need SCADA, PPC and APM across sites.
| Tool | Country | Pricing | What it does |
|---|---|---|---|
| GreenPowerMonitor (GPM Horizon) | Spain | Paid | Barcelona-based monitoring, SCADA and power plant control provider for renewables, part of DNV since 2016, with tens of GW under management. |
| meteocontrol VCOM | Germany | Paid | Augsburg-based independent monitoring provider whose VCOM Cloud and blue'Log dataloggers supervise over 50 GW of PV worldwide. |
| Power Factors Unity | United States | Paid | Renewable energy management suite (REMS) managing 300+ GW of solar, wind and storage; owned by Vista Equity Partners, which rolled Greenbyte, 3megawatt BluePoint and Inaccess into the Unity platform. |
| Stem PowerTrack (AlsoEnergy) | United States | Paid | Leading C&I and utility-scale solar monitoring and asset management platform; AlsoEnergy was acquired by Stem Inc. |
| Qantum (QOS Energy) | France | Paid | Cloud asset performance management platform from Nantes-based QOS Energy, acquired by Envision Digital in 2022, managing 10+ GW across 8,000 plants. |
| BaxEnergy | Italy | Paid | Energy Studio Pro platform for vendor-independent monitoring and control of solar, wind and hybrid fleets; acquired by Yokogawa Electric in 2023. |
| Opoura | Denmark | Paid | Danish provider (formerly SCADA International) of energy management software, power plant control and digital services for renewable power plants. |
| Isotrol | Spain | Paid | Spanish provider of monitoring and control solutions for renewable energy asset management. |
| 3E SynaptiQ | Belgium | Paid | Independent asset performance management platform by 3E (Brussels) for solar, wind and storage; physics-based digital-twin 'grey-box' analytics across 20,000+ sites and ~50 GW in 45 countries, used by Engie, Voltalia and BayWa r.e. |
Drone, aerial and thermography analytics (2)
For O&M and inspection teams turning thermal and RGB drone imagery into defect maps and digital twins.
| Tool | Country | Pricing | What it does |
|---|---|---|---|
| MapperX | Turkey | Paid | Ankara-based AI platform built only for drone inspection of solar PV plants. |
| Raptor Maps | United States | Paid | Boston-based, MIT-founded solar lifecycle software company whose Raptor Solar platform turns aerial thermography, drone inspections and field data into a digital twin of PV plants for anomaly detection, warranty claims and O&M prioritization. |
Off-grid, hybrid, mini-grid and distributed monitoring (6)
For operators of hybrid PV-diesel-BESS plants, off-grid systems, mini-grids and multi-brand residential fleets.
| Tool | Country | Pricing | What it does |
|---|---|---|---|
| AMMP | Netherlands | Paid | Amsterdam-based data and AI platform for renewable asset management (AMMP OS), strong in distributed and off-grid solar O&M across emerging markets; 10,000+ solar, wind and battery sites, and launched 'Ray', an AI coworker for asset managers, in 2026. |
| Elum Energy | France | Paid | Paris-based monitoring and control specialist for C&I solar, hybrid (PV-diesel-BESS) and utility plants: ePowerMonitor cloud monitoring plus ePowerControl plant controllers and dataloggers, widely deployed in Africa, Middle East and Asia. |
| SolarAssistant | South Africa | Paid | Real-time solar monitoring, analytics and power management software running on a Raspberry Pi connected to inverters and batteries. |
| Victron VRM Portal | Netherlands | Free | Victron Energy's VRM remote monitoring portal for off-grid, mobile and stationary energy systems built on Victron inverters, chargers and batteries. |
| SparkMeter | United States | Paid | Metering and grid management software for mini-grid and distribution utility operators in emerging markets. |
| NuWatt | Lebanon | Paid | Beirut-founded solar and battery monitoring platform for homeowners, businesses, industrial sites and installers. |
Performance analytics, diagnostics, CMMS and assurance (6)
For asset owners, investors and O&M providers who need underperformance diagnosis, work orders or performance guarantees.
| Tool | Country | Pricing | What it does |
|---|---|---|---|
| Clir Renewables | Canada | Paid | AI-driven performance analytics and portfolio benchmarking for wind and solar asset owners and investors, covering tens of GW of assets. |
| Heliocity | France | Paid | Grenoble deeptech spin-off from INES/CEA providing algorithmic PV plant diagnostics: HelioFlash SaaS performance audits and Helio Smart Guard-Grid (2026), which diagnoses PV installations using only smart-meter grid data, a first in Europe. |
| Enurgen | Canada | Paid | Performance monitoring software helping solar asset owners orchestrate operations across the asset lifecycle and maximize energy yields. |
| Fracttal One | Spain | Paid | Cloud/mobile CMMS for maintenance management widely used by solar plant operators and renewable O&M teams (work orders, preventive maintenance plans, spare parts, IoT condition monitoring); Madrid HQ with strong Latin American presence. |
| Omnidian | United States | Paid | Seattle-based solar performance assurance platform combining machine-learning remote diagnostics with performance guarantees and service dispatch for residential and commercial fleets; raised an $87M Series C in April 2025 and acquired part of bankrupt Sunnova's servicing business. |
| Quintas Analytics | Spain | Paid | Embedded analytics and technical asset management platform from Quintas Energy (Seville) for solar portfolios: data cleaning and standardization, outage loss quantification, compliance and investor reporting for asset owners across Europe and beyond. |
Free and freemium solar monitoring software
2 tools in this guide are listed as free: Sunny Portal (SMA) and Victron VRM Portal. Another 4 are freemium (a free tier with paid options): Enphase App (Enlighten), Fronius Solar.web, SOLARMAN and Solytic.
Free and freemium portals are usually tied to a manufacturer's own inverters or batteries, or offer a basic dashboard with paid analytics on top. Independent SCADA, APM and drone platforms in the groups above are almost all paid, sold per MW, per site or as a SaaS seat.
Ownership and product changes
Several platforms have changed owner or brand in recent years, which can affect pricing, support and which product name you will see in a tender. Listings that mention an acquisition, ownership change or insolvency: BaxEnergy, GreenPowerMonitor (GPM Horizon), Omnidian, Power Factors Unity, Qantum (QOS Energy), Solytic and Stem PowerTrack (AlsoEnergy). Details are on each listing page.
Solar monitoring software by country
How to choose solar monitoring software
- Start from the assets you already have. If every plant uses one inverter brand, that manufacturer's portal may be enough. Multi-brand fleets and utility plants usually need an independent platform from the SCADA/APM group above.
- Match the scale. Residential apps report panel or string production; utility SCADA adds plant control, alarms and PPC; APM tools add fleet benchmarking and loss breakdown. Pick the group that matches your site size and reporting needs.
- Check inverter, logger and sensor support. Confirm the tool speaks to your inverters, dataloggers and weather sensors (or can ingest their CSV/API). Our related sensors section below lists hardware makers often paired with these platforms.
- Decide who the users are. Homeowners need a simple app; O&M teams need work orders and ticket workflows (see the CMMS tools); investors need portfolio KPIs and bankable reports.
- Compare the pricing model. Tools are sold per site, per MW under management, per user or bundled with hardware. Estimate yearly cost at your real fleet size, not the demo price.
- Ask about offline and cyber requirements. Utility plants often need on-premise or hybrid SCADA with role-based access; off-grid and mini-grid sites need local logging when connectivity is poor.
Related: sensors and monitoring hardware (7)
Software is only as good as the data it receives. The PV Index also lists 7 Sensors & Monitoring Hardware makers in the Equipment category: irradiance sensors, weather stations and plant dataloggers that feed many of the platforms above.
| Company | Country | What they make |
|---|---|---|
| Campbell Scientific | United States | Logan, Utah-based maker of rugged dataloggers and complete meteorological stations widely used for solar resource assessment and plant SCADA weather inputs. |
| EKO Instruments | Japan | Tokyo-based manufacturer since 1927 of MS-series pyranometers, sun trackers and spectroradiometers for solar energy assessment and PV plant monitoring. |
| Hukseflux | Netherlands | Delft-based sensor maker producing SR-series pyranometers and heat flux sensors, a leading supplier of ISO 9060 Class A irradiance sensors for PV monitoring. |
| IMT Solar | Germany | German maker (Ingenieurbüro Mencke & Tegtmeyer) of silicon solar irradiance sensors, PV reference cells, temperature and meteorological sensors. |
| Kintech Engineering | Spain | Spanish manufacturer of data loggers and measurement systems for wind and solar resource assessment. |
| meteocontrol | Germany | Augsburg-based monitoring specialist supplying blue'Log data loggers and the VCOM virtual control room overseeing more than 20 GW of PV plants worldwide. |
| OTT HydroMet (Kipp & Zonen) | Netherlands | Kipp & Zonen of Delft, part of OTT HydroMet, makes the industry-standard SMP-series pyranometers and RT1 rooftop monitors used for solar resource and performance measurement. |
Method
Tools come from the Software category of The PV Index: every listing typed Monitoring & Asset Performance. The related sensors table comes from Equipment > Sensors & Monitoring Hardware. Pricing (Free, Freemium, Paid) and descriptions are from each listing, compiled from the vendors' own websites. Order within each group is not a ranking. For design and yield tools, see solar design software. Missing a tool? Submit it for review.
Frequently asked questions
What is the best solar monitoring software?
It depends on the job. For residential inverter portals, tools such as Enphase App (Enlighten), Fronius Solar.web, Sunny Portal (SMA) and SOLARMAN are common; for utility-scale SCADA and APM, GreenPowerMonitor (GPM Horizon), meteocontrol VCOM, Power Factors Unity and Stem PowerTrack (AlsoEnergy); for drone thermography analytics, MapperX and Raptor Maps. The PV Index lists 29 monitoring tools grouped by use.
Is there free solar monitoring software?
Yes. The PV Index lists 2 free tools, including Sunny Portal (SMA) and Victron VRM Portal, and 4 freemium tools with a free tier, such as Enphase App (Enlighten), Fronius Solar.web, SOLARMAN and Solytic.
What is solar plant monitoring software?
Solar plant monitoring software collects production, irradiance, inverter and alarm data from a PV plant (or a fleet of plants), shows it on dashboards and alerts operators when performance drops. Utility-scale platforms often add SCADA, power plant control and asset performance management; residential tools focus on production apps for homeowners and installers.
What is the difference between SCADA and a monitoring portal?
A residential or C&I monitoring portal mainly visualises production and sends alerts. A utility SCADA system also controls the plant (setpoints, curtailment, PPC) and integrates with the grid operator. Many tools in the utility group above combine monitoring, SCADA and APM in one suite—check each listing.
Which solar monitoring software works with multiple inverter brands?
Manufacturer portals usually cover that brand only. Independent platforms in The PV Index (for example 3E SynaptiQ, meteocontrol VCOM, NuWatt and Solytic) are built to ingest data from several inverter and logger brands. Confirm supported devices on the vendor site.
How many solar monitoring software tools are there?
The PV Index lists 29 solar monitoring and asset performance tools from 14 countries as of 2026-11-06: 2 free, 4 freemium and 23 paid.
How do I get a software tool listed in The PV Index?
Submit the website through the free form at https://thepvindex.com/submit/. Listing is free. Every submission is reviewed by hand, and only organisations that are active in the solar PV industry and have a working website are added. Inclusion and order are never for sale.
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