Solar-Log
- Company typePrivate
- Founded2007
- HeadquartersGeislingen, Germany
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
Solar-Log firmographics
Firmographics- Name
- Solar-Log
- Legal name
- Solar-Log GmbH
- Website
- https://solar-log.com
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Ownership category
- akta.pro rank
Solar-Log industry classification
Industry- Product category
- Solar PV Energy Management Systems
- NAICS
- Electric Power Generation, Transmission and Distribution (2211)
- SIC
- Electric Services (4911)
- akta.pro primary industry
- Solar Design, Engineering & Performance Software (PV Modeling, Digital Twins, Monitoring) (EUAMABAH)
- akta.pro secondary industry
- PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations) (EUACAGAC)
Keywords
Where Solar-Log is headquartered
LocationHeadquarters
- HQ city
- Geislingen
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
Solar-Log business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Supply Chain, Personnel, Infrastructure, Operations, Marketing or Sales
Revenue model
- Hardware Sales (Solar-Log™ Base, MOD I/O, accessories): Sale of physical data logger hardware (Solar-Log Base 15, 100, 2000), interface modules (MOD I/O, MOD 485), Smart Relay Box/Station, and accessories. One-time hardware purchase with extension licenses available.
- Software Licenses (portal, feature extensions): Annual or multi-year licenses for Solar-Log WEB Enerest™ 4 portal access, direct marketing (DV) licenses, PM Pro licenses, cluster control licenses, and other feature extensions. Sold via the Solar-Log shop.
- Monitoring-as-a-Service (WEB-4U): Solar-Log WEB-4U service where Solar-Log monitors PV plants on behalf of installers/O&M companies. Provides remote configuration, error analysis, and reporting as a managed service.
- Direct Marketing Services: Direct marketing platform enabling PV plant operators to sell electricity at the power exchange. Solar-Log provides the technical platform and VPN/P2P connection to direct marketing partners (e.g., EnBW), charging license fees.
- Professional Services (Support, Training, VDE Project Support): Solar-Log Academy training programs, technical support (phone, email, TeamViewer), and VDE project support for grid connection certification. Also remote configuration services for partners.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Pay-as-you-go | Demo portal access (free trial) |
| Subscription | Annual | Solar-Log WEB Enerest™ 4 portal licenses |
| One time/ perpetual license | Multi-year contract | Direct Marketing (DV) licenses |
| Subscription | Multi-year contract | PM Pro and Verbundsteuerung (Cluster Control) licenses |
| Unit Pricing | Pay-as-you-go | Hardware (Solar-Log Base, MOD I/O, accessories) |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels7 records
Solar-Log product offering
Product offeringCore offering
Solar-Log manufactures the Solar-Log™ Base family of PV data loggers (Base 15, 100, and 2000) for residential, commercial, and industrial-scale PV installations, and operates the Solar-Log WEB Enerest™ 4 cloud-based monitoring and energy management portal. The portfolio spans hardware data loggers, the Enerest™ cloud platform, and functional solutions for Smart Energy load management, VDE-AR-N-4110 feed-in management, and direct electricity marketing at the power exchange.
Product overview
Solar-Log™ is a manufacturer-independent PV energy management system built around a modular hardware and software architecture. The core is the Solar-Log™ Base data logger line (covering Base 15 up to 15 kWp, Base 100 up to 100 kWp, and Base 2000 up to 2000 kWp), which connects to the cloud-based Solar-Log WEB Enerest™ 4 monitoring portal. The portfolio spans three layers: (1) Hardware — Solar-Log™ Base devices, expansion modules (MOD I/O, MOD 485, Gateway 50), Smart Relais Box/Station, and accessories; (2) Software/SaaS — Solar-Log WEB Enerest™ 4 portal, Enerest ToGo mobile app, and Solar-Log™ WEB-4U managed monitoring service; (3) Functional modules — Smart Energy (self-consumption optimization), Einspeisemanagement (feed-in management), and Direktvermarktung (direct marketing), each with associated software licenses (PM PRO, Verbundsteuerung, DV-Lizenz). The Clemap-powered charging park management solution extends the Smart Energy layer for EV infrastructure. The system is compatible with over 3,800 components from 179 manufacturers including inverters, batteries, heat pumps, meters, and EV chargers.
Differentiator
Problem solved
Functional benefit
Brands
- Solar-Log WEB Enerest™: Online monitoring platform for PV systems
- Solar-Log™ WEB-4U
- Solar-Log™ Base
- Enerest ToGo
Products and services
- Solar-Log™ Base 15 Data logger hardware for residential PV plants up to 15 kWp, providing PV monitoring, energy management, and grid integration with S0, RS485/RS422, USB, and dual Ethernet interfaces. Sold to installers and end customers via the Solar-Log shop.
- Solar-Log™ Base 100 Data logger hardware for commercial-scale PV plants up to 100 kWp, offering the same interface set as Base 15 with capacity for larger installations. Sold via the Solar-Log shop to installers and C&I customers.
- Solar-Log™ Base 2000 Data logger hardware for industrial PV plants up to 2000 kWp (2 MWp), supporting Modbus/TCP for remote control systems, VDE-AR-N-4110 compliance for medium-voltage grid connection, and cluster networking with up to 9 slave units. Sold to enterprise, utility, and industrial customers.
- Solar-Log WEB Enerest™ 4 Cloud-based online monitoring and energy management portal for all Solar-Log™ devices and select third-party loggers, providing real-time plant monitoring, error detection, yield analysis, automated reporting, and remote configuration. Available as a subscription license and supports white-label deployment for partners.
- Enerest ToGo Free mobile application for iOS and Android providing real-time PV plant monitoring, error notifications, consumption and production overview, and weekly yield reports with push notifications. Designed for both professionals (installers, O&M companies) and end customers.
- Solar-Log™ WEB-4U Managed monitoring service in which Solar-Log specialists monitor customer PV plants on behalf of portal partners (installers, O&M companies, energy suppliers). Includes error detection, remote configuration, custom reporting, and prioritized fault alerts as a subscription service.
- Smart Energy Integrated energy management module enabling PV surplus utilization through intelligent control of heat pumps, heating rods (AC ELWA 2, AC THOR, AC THOR 9S), EV chargers, battery storage (including forecast-based charging for Varta batteries), and smart plugs. Increases self-consumption rates from approximately 30% to 75% for typical 5 kWp residential systems.
- Einspeisemanagement (Feed-in Management) Feed-in management solution for grid-compliant power limitation and control. Supports fixed and dynamic percentage curtailment, self-consumption compensation, simplified feed-in management under German EEG, and VDE-AR-N-4110 certified medium-voltage grid control with active and reactive power management. Targets grid operators, energy suppliers, and large PV plant operators.
- Direktvermarktung (Direct Marketing) Direct marketing solution enabling PV plant operators to sell generated electricity at the power exchange via integrated VPN/P2P connection to marketing partners (including EnBW). Handles certificate exchange, yield forecasting, and live feed-in metering with compatible Janitza and PRO380-CT meters. Includes DV license with 30-day free activation for project flexibility.
- Solar-Log™ Ladeparkmanagementlösung powered by Clemap
Quantifiable outcome
- Self-consumption rates can increase from ~30% (without Smart Energy) to up to 75% with AC ELWA 2 heating element integration (average household with 5 kWp PV system)
- +2 more outcomes
Companies that use Solar-Log
Customer profileSegments4 records
Ideal customer profiles4 records
Solar-Log technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration10 records
AI capability2 records
Feature10 records
Solar-Log partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Clemap AGcoreSolar-Log partnered with Clemap AG to power the Solar-Log Charging Park Management solution. Clemap provides the intelligent charging infrastructure management layer with dynamic and static power limiting, supporting AC and DC charging stations from over 60 manufacturers. This enables integrated EV charging control within Solar-Log's energy management ecosystem.
- EnBW (Energie Baden-Württemberg AG)coreSolar-Log partners with EnBW for direct marketing of PV energy. The partnership simplifies the direct marketing process with reduced hardware costs and installation complexity. Solar-Log's platform enables simplified enrollment and certificate exchange with EnBW as direct marketing partner.
Scale indicators7 records
Recent moves6 records
Expansion highlights5 records
Solar-Log competitors and assessment
Company assessmentBroad incumbents
- Sungrow: Chinese inverter and energy storage system manufacturer with iSolarCloud monitoring platform. Competes with Solar-Log via bundled inverter-plus-monitoring solutions, particularly in C&I and utility-scale projects.
- SMA Solar Technology: One of the world's largest inverter manufacturers with the Sunny Portal/Sunny Home Manager monitoring and energy management ecosystem. Competes with Solar-Log through bundled inverter-attached monitoring at utility, C&I, and residential scales.
- Fronius International: Austrian inverter manufacturer offering Solar.web monitoring and Fronius Ohmpilot for self-consumption optimization. Direct overlap with Solar-Log's Smart Energy and feed-in management value proposition, especially across European C&I and installer channels.
- SolarEdge: Israeli inverter and module-level power electronics company with its own monitoring and energy management platform serving residential, C&I, and utility-scale markets. Competes with Solar-Log via integrated inverter-plus-monitoring bundles.
- Enphase Energy: US-based microinverter and home energy systems company with the Enphase Installer Toolkit and IQ monitoring platform. Competes with Solar-Log on residential monitoring, battery integration, and self-consumption optimization features.
- Huawei FusionSolar: Global inverter and smart PV solution provider whose FusionSolar platform competes in monitoring and energy management. Notably, Huawei's data loggers integrate with Solar-Log Enerest 4 — making Huawei both a competitor and ecosystem participant.
Direct peers
- Locus Energy (now part of AlsoEnergy/Enphase): PV monitoring and analytics platform focused on residential, commercial, and O&M portfolios. Direct overlap with Solar-Log on portfolio monitoring, fault detection, and O&M workflow support across distributed PV assets.
- AlsoEnergy: US-headquartered PV and energy storage asset performance management platform serving commercial, industrial, and utility-scale portfolios. Comparable to Solar-Log WEB-4U managed monitoring and O&M company value proposition, especially for portfolio-scale deployments.
- KOSTAL Solar Electric: German inverter and PV monitoring provider serving residential and C&I customers across Europe. Competes with Solar-Log in the same channel — PV installers — with bundled inverter-plus-monitoring offerings and comparable grid-compliance functionality.
- meteocontrol: German-headquartered PV monitoring and yield forecasting specialist offering the VCOM cloud platform and data loggers. Directly comparable to Solar-Log on manufacturer-independent monitoring and is even explicitly integrated into Solar-Log's Enerest 4 portal as a third-party logger.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Solar-Log social profiles
Digital presenceSolar-Log compliance and trust
Trust signalCompliance5 records
Solar-Log financial estimates
Financial estimateRevenue estimate
Valuation estimate
Solar-Log leadership team
Management profileNumber of profiles
Profiles4 records
Solar-Log funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Solar-Log M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Solar-Log
What does Solar-Log do?
Solar-Log manufactures the Solar-Log™ Base family of PV data loggers (Base 15, 100, and 2000) for residential, commercial, and industrial-scale PV installations, and operates the Solar-Log WEB Enerest™ 4 cloud-based monitoring and energy management portal. The portfolio spans hardware data loggers, the Enerest™ cloud platform, and functional solutions for Smart Energy load management, VDE-AR-N-4110 feed-in management, and direct electricity marketing at the power exchange.
Is Solar-Log a public or private company?
Solar-Log is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Solar-Log founded?
Solar-Log was founded in 2007. It employs 51 to 100 people.
Where is Solar-Log based?
Solar-Log is headquartered in Geislingen, Germany, in the Europe region.
How does Solar-Log make money?
Five revenue lines are on record. Hardware Sales (Solar-Log™ Base, MOD I/O, accessories) is the primary driver. The others are software Licenses (portal, feature extensions), monitoring-as-a-Service (WEB-4U), direct Marketing Services and professional Services (Support, Training, VDE Project Support).
Who are Solar-Log's main competitors?
Broad incumbents on record are Sungrow, SMA Solar Technology, Fronius International, SolarEdge, Enphase Energy and Huawei FusionSolar. Direct peers are Locus Energy (now part of AlsoEnergy/Enphase), AlsoEnergy, KOSTAL Solar Electric and meteocontrol.
Does Solar-Log have an API?
No public API is recorded for Solar-Log.
What industry is Solar-Log in?
Solar-Log's product category is Solar PV Energy Management Systems. Its primary akta.pro industry code is EUAMABAH, Solar Design, Engineering & Performance Software (PV Modeling, Digital Twins, Monitoring), with a secondary code of EUACAGAC, PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations). Its NAICS code is 2211 and its SIC code is 4911.