Trusted by companies all around the world#
Logo energy partners power
Logo first solar
Logo formosa
Logo chint
Logo belectric
Logo nova

What is Solargis TMY API?

Solargis TMY API synthesizes a representative year from up to 30 years of historical solar radiation and meteorological records. It supports solar project design and yield simulation via API integration into third-party tools, delivering bankable, gap-free data.

Data is available with temporal resolutions and aggregations from hourly to 1-minute.

  • Asynchronous process
  • Computed on-demand
  • Bankable data validated against ground measurements
  • API key-based, userless tokens available
  • Easy integration with custom tools and PV software 
Bankable TMY data for project financing

Bankable TMY data for project financing

Accurate energy yield estimates are essential for project financing and feasibility studies. The Solargis TMY data can be fed directly into financial models or other software tools for accurate economic projections which are required by investors and banks to assess the viability of solar projects.

Maximize site selection with reliable TMY data

Maximize site selection with reliable TMY data

Assess solar resource potential with representative yearly data. Typical Meteorological Year data generates a representative year from up to 30 years of historical solar radiation and meteorological records.

It includes parameters like GHI, DNI, temperature, wind, and humidity for global locations. Data is computed on-demand, ensuring freshness and accuracy validated against ground measurements.

From design to performance

From design to performance

Optimize PV power plant design by modeling the impact of tilt, orientation, and weather on energy production, unlocking smarter, high-efficiency system layouts.

From optimized design to operations, benchmark real plant performance against TMY data to accurately analyze system efficiency and long-term energy yield.

Data trusted by financial stakeholders

Data trusted by financial stakeholders

Solargis provides bankable data accepted by banks, investors, and other stakeholders. Our algorithms based on real-world physics, grounded in the latest peer-reviewed scientific literature and built on transparent, traceable, and validated models, leave no room for ambiguities in any simulation step. 

Our scientific, rigorously documented approach – along with numerous independent validation studies – has earned Solargis its reputation as the most reliable source of solar resource data on the market.

Technical documentation

Technical documentation

Check out the technical documentation or learn more about the technology behind this solution.

10 000+

Projects supported by our bankable solar & meteo data, software, and services every year

24

Years of experience with solar projects and improving industry standards

99%

Coverage of the world’s population with 30 years of solar and meteorological data

"We had been in touch with several meteo providers and we found that Solargis provides the most representative estimates for each site."
Matteo Riccieri
Chief Operating Officer
RTR
Logo rtr
1 / 4
Logo energy partners power
Logo first solar
Logo formosa
Logo chint
Logo belectric
Logo nova

Related products and services#

Reliable and accurate solar data
Fast sites comparison
Comprehensive environmental overview
Analytics and solar power calculator
Collaboration and multilingual support
15-min Time Series and TMY data
Up to 30 years of data history
3D energy system designer
Unmatched level of detail and accuracy
PV simulation based on ray tracing and Perez all-weather sky model
Asynchronous process
Supports high-volume requests
Validates inputs before charging credits
API key-based, userless tokens available
Easy integration with custom tools and PV software