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Solar PV Data Logger Comparison: Find your best data logger.

Compare all major brands worldwide in a compact overview, and discover the right match within minutes.
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We did the work for you

No more going through data sheets, no more lacking clarity over which solar PV data logger fits you. Solytic did an extensive research, worked together directly with solar PV data logger manufacturers worldwide, and used pv magazine’s Monitoring and Operational Management Systems Database to create an up-to-date and compact comparison of data loggers.

The overview does not miss to include any major international brand. Enter the product comparison, and sort different functions and prices according to your needs. Decide for the right data logger with confidence, and maximize the performance of your assets while reducing maintenance costs.

Why compare data loggers with Solytic?

Independent

We are a pure software company, hardware-independent, and neutral towards all data loggers.

Collaborative

We created the comparison in a joint effort with manufacturers onboard.

Comprehensive

The overview is enriched with pv magazine’s product database.

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Cost effectiveness

To compare  how cost-effective solar pv data loggers are, you best divide them in two categories: Data loggers suiting larger systems (over 100 kWp), and those for smaller systems (under 100 kWp). The reason: in each country, there are different requirements for solar PV data loggers depending on their size, resulting in a wide array of functions and prices.

Fronius Logo
Solar-Log Logo
Solar-Log Logo
Solar-Log Logo

Data loggers for plants above 100 kWp

Focus Plant Capacity
from 0.001 MWp
from 0.25 MWp
from 0.001 MWp
up to 10 MWp
up to 10 MWp
up to 2.5 MWp
not public
not public
not public
up to 4 MWp
from 1 MWp
not public
not public
up to 500 MWp
from 0.001 MW
up to 3 MWp
up to 6 MWp
tba
Compatible with Solytic
tba
Price
€ 222 - € 259
from € 600*
€ 498 - € 592*
€ 475 - € 599*
€ 980 - € 1,100*
€ 575
€ 585 - € 745*
€ 931 - € 1,148*
€ 1,031 - € 1,248*
not public
not public
€ 260
€ 174*
not public
not public
not public
not public
tba
Free data transferto third-party portal
not public
not public
not public
not public
not public
tba
Company
Product
Fronius Logo
Fronius Datamanager 2.0
Q.reader
Smartlogger 3000
ADL-MXSmini
ADL-MXSpro
SMA Data Manager M
Solar-Log Logo
Solar-Log 1200
Solar-Log Logo
Solar-Log 1900
Solar-Log Logo
Solar-Log 2000
Logger1000
Solar-Log 1900
Delta PPM DC1 Gateway
Delta Solivia Gateway M1 G2
blue'Log X-Series
DIN-Rail Logger
SUN
SUN PM
Further info
Focus Plant Capacity
Compatible with Solytic
Price
Free data transferto third-party portal
from 0.001 MWp
€ 222 - € 259
from 0.25 MWp
from € 600*
not public
from 0.001 MWp
€ 498 - € 592*
up to 10 MWp
€ 475 - € 599*
up to 10 MWp
€ 980 - € 1,100*
up to 2.5 MWp
€ 575
not public
€ 585 - € 745*
not public
€ 931 - € 1,148*
not public
€ 1,031 - € 1,248*
up to 4 MWp
not public
from 1 MWp
not public
not public
€ 260
not public
not public
€ 174*
not public
up to 500 MWp
not public
not public
from 0.001 MW
not public
not public
up to 3 MWp
not public
up to 6 MWp
not public
tba
tba
tba
tba
* Risk of additional costs (such as a monthly fee)
Fronius Logo
Solar-Log Logo
Solar-Log Logo

Data loggers for plants below 100 kWp

Focus plant capacity
from 1 kWp
from 1 kWp
10 - 30 kWp
not public
not public
10 - 30 kWp
up to 150 kWp
Compatible with Solytic
Price
€ 222 - € 259
€ 498 - €592*
€ 285
€ 115 - € 208*
€ 309 - € 413*
€ 450
not public
Free data transfer to third-party portal
not public
Company
Product
Fronius Logo
Fronius Datamanager 2.0
Smartlogger 3000
SMA Data Manager M Lite
Solar-Log Logo
Solar-Log 50
Solar-Log Logo
Solar-Log 300
Sunny Home Manager 2.0
Envoy-S Metered +DRM
Focus plant capacity
Compatible with Solytic
Price
Free data transfer to third-party portal
from 1 kWp
€ 222 - € 259
from 1 kWp
€ 498 - €592*
10 - 30 kWp
€ 285
not public
€ 115 - € 208*
not public
€ 309 - € 413*
10 - 30 kWp
€ 450
up to 150 kWp
not public
not public
* Risk of additional costs (such as a monthly fee)

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Feed-in management

This network management instrument serves network operators to protect the network from over- and underloading.

Fronius Logo
Solar-Log Logo
Solar-Log Logo
Solar-Log Logo
Solar-Log Logo
Solar-Log Logo
Active Power Limitation (eg. to 70%)
optional
tba
Active Power Control by Network Operators
optional
optional
optional
optional
tba
Direct Marketing Management
not public
not public
not public
optional
not public
not public
optional
optional
optional
optional
tba
Company
Product
Delta PPM DC1 Gateway
Delta Solivia Gateway M1 G2
Envoy-S Metered +DRM
Fronius Logo
Fronius Datamanager 2.0
Q.reader
EzLogger Pro
Smartlogger 3000
ADL-MXSpro
ADL-MXSmini
blue'Log X-Series
REFULog
Sunny Home Manager 2.0
SMA Data Manager M
SMA Data Manager M Lite
SE1000-DTLG-S1
Solar-Log Logo
Solar-Log 50
Solar-Log Logo
Solar-Log 300
Solar-Log Logo
Solar-Log 1200
Solar-Log Logo
Solar-Log 1900
Solar-Log Logo
Solar-Log 2000
Logger1000
Logger3000
SUN
SUN PM
Further info
Active Power Limitation (eg. to 70%)
Active Power Control by Network Operators
Direct Marketing Management
not public
not public
not public
optional
optional
not public
not public
optional
optional
optional
optional
optional
optional
optional
optional
tba
tba
tba

Data collection

A solar pv data logger collects data from various resources and transmits them to a portal which processes and visualises data.

We take the term data collection more broadly, and understand it as different data sources depending on how the PV data logger is equipped and connected.

In order to find out which data sources must or should be connected, ask yourself the following questions: Which infrastructure is already at hand? How is the system used? – Is it a pure feed-in plant? Does it serve for your own consumption, with and without storage?

Fronius Logo
Solar-Log Logo
Solar-Log Logo
Solar-Log Logo
Solar-Log Logo
Solar-Log Logo
Measurement on main connection point
not public
optional
optional
only via meter
only via meter
tba
Measurement at the inverter
tba
Measurement on the storage system
not public
optional
optional
not public
planned
planned
optional
tba
not public
Measurement of individual module strings
not public
optional
optional
optional
optional
optional
tba
Measuring external sensors
tba
not public
Measuring consumption in the house network
optional
not public
not public
optional
optional
TBA
not public
Company
Product
Delta PPM DC1 Gateway
Delta Solivia Gateway M1 G2
Envoy-S Metered +DRM
Fronius Logo
Fronius Datamanager 2.0
Q.reader
EzLogger Pro
Smartlogger 3000
ADL-MXSpro
ADL-MXSmini
blue'Log X-Series
REFULog
Sunny Home Manager 2.0
SMA Data Manager M
SMA Data Manager M Lite
Solar-Log Logo
Solar-Log 50
Solar-Log Logo
Solar-Log 300
Solar-Log Logo
Solar-Log 1200
Solar-Log Logo
Solar-Log 1900
Solar-Log Logo
Solar-Log 1900
Logger 1000
Logger 3000
SUN
SUN PM
further info
DIN-Rail Logger
Measurement on main connection point
Measurement at the inverter
Measurement on the storage system
Measurement of individual module strings
Measuring external sensors
Measuring consumption in the house network
not public
optional
optional
optional
not public
not public
not public
not public
not public
optional
optional
optional
optional
optional
optional
optional
only via meter
planned
only via meter
planned
optional
optional
optional
tba
tba
tba
tba
tba
TBA
not public
not public
not public
More criteria explained:

Compatibility

What is important about compatibility?

Make sure the solar data logger can communicate with the selected components such as ripple control receiver and park controller but also with peripherals such as sensorsbattery storage and inverters. Please also note: without a functioning feed-in management system, the solar system (which is operated in parallel to the grid) must not be put into operation.

What to consider when making a choice?

Check whether the data logger masters the corresponding communication protocols, provides relevant interfaces to direct marketing and transmission system operators (TSO) and distribution system operators (DSO). The overall communication concept should also include all peripheral devices that collect data.

Interfaces

Why are interfaces important?

Interfaces connect external hardware to the solar pv data logger. They enable the logger to collect data in the first place.

What should you consider when making a choice?

Make sure interfaces are available in sufficient numbers to connect the external periphery. If you choose carelessly, you may have to pay extra, for example, in case additional converters or expansion interfaces are required.

IT Security

Why is IT security important?

IT security is growing more and more important with the share of renewable energies rising in total energy production. IT systems controlling and monitoring solar pv systems get increasingly interconnected and digitalized. Thus, they are exposed to potential cyber attacks. Due to partially open protocols, attackers can manipulate solar systems, and consequently cause considerable damage such as blackouts.

What to consider when making a choice?

In addition to complying with requirements in a client network, plant operators ideally ensure that communicating with the plant is encrypted, and no one is able to dial into the plant easily. If you use a VPN, you can use it to increase IT security. Also, take care that passwords comply with state-of-the-art recommendations.

Data and measuring intervals

Why are data and measuring intervals important?

Depending on how often users need the data from the system, they can set different transmission intervals: from 1-minute transmission intervals to transmission once a day.

The setting options also vary for the measurement intervals. These range between the standard of 15 minutes (average value) and 1 second values used in the energy industry.

What to consider when making a choice?

For data intervals, some PV data logger providers restrict the service. For example, some PV data loggers allow data push to a third party portal once a day free of charge. Costs for extra licenses may also be incurred if your own data is to be transferred to a third-party portal at smaller intervals. In this case, data loggers should ensure the greatest possible flexibility, especially regarding your own data sovereignty.

The criteria for the measurement intervals strongly depend on your own wishes but also on the technical necessities. Do you operate a PV system for your own consumption, and would you like to track the load flows? Then you should look to higher-resolution intervals, for example 1-minute averages. Plants running in pure feed-in mode can operate with 15-minute averages without hesitation. A low data resolution has the disadvantage that peaks are less easily detected.

Meanwhile, it has proven best practice to let data logger store a minimum of three months of data locally, and perform a complete data backup in the cloud, says Solar Power Europe.

Note:
This comparison is based on public data from pv magazine's "Product Database Monitoring Systems" magazine. Prices, if available, are coming directly from the providers. With this note we would like to explicitly point out that this article is only an excerpt comparing the most important features as well as the providers from our point of view. In this way, we can guarantee an adequate overview of the information. To view the complete data, simply click on the link to pv-magazine's product database (German-only).
For product detail updates please email us at marketing@solytic.com.
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