Available Other Features
Missing Other Features
Pricing
Starting Price
Options
- Free Trial
- Annual Subscription
Available Since
Deployment Options
Good Option For
- Freelancers (1 person company)
- Microbusiness (2-10 people)
- Small Business (11-50 people)
- Medium Business (51-250 people)
- Large Business (250+ people)
Deep dive
Core Features
T*SOL combines technical system design with dynamic simulation, environmental analysis and economic assessment. Users can work with predefined solar thermal configurations or modify components and parameters to investigate how design decisions affect system performance. Key capabilities include:
Dynamic Solar Thermal Simulation: Simulates solar thermal systems over periods of up to one year using hourly meteorological data, calculating energy production, system efficiency and solar contribution.
System Design & Optimization: Supports optimization of collector area and storage volume against defined targets and includes configurations for domestic hot water, space heating, process heat, swimming pools and large-scale systems.
Component & Climate Databases: Includes databases covering collectors, boilers, storage tanks and climate data, allowing projects to be configured using relevant technical and location-specific information.
Shading Analysis: Accounts for shading from the horizon and nearby objects such as buildings and trees, including seasonal changes in light transmission.
Variant Comparison: Multiple system variants can be maintained within a project, allowing users to compare how different components and configurations influence solar thermal performance.
Environmental Impact Analysis: T*SOL calculates the CO₂ emissions avoided by a solar thermal system compared with a defined reference heating system, using emission factors for the displaced energy source.
Closing Insights
Solar thermal systems need to be properly sized and configured because performance depends on the interaction between collector area, storage capacity, auxiliary heating, demand, system controls and local climate conditions. T*SOL helps designers evaluate these variables before installation, simulating different configurations to determine expected solar yield, system efficiency and suitable combinations of collectors and storage. Users can also compare alternative system designs and assess their economic performance. Valentin Software
TSOL is developed by Berlin-based Valentin Software and forms part of its renewable-energy software portfolio, alongside PV*SOL for designing and simulating photovoltaic systems and PV*SOL Premium, which adds 3D visualization and detailed shading analysis. Valentin Software
A fully featured 30-day trial is available, although saving and printing project reports are disabled during the trial. As of September 2026, a one-year licence for T*SOL costs €485 plus VAT.