# Solargis

> Solargis provides solar and meteorological data, PV engineering software, and consultancy services covering the entire solar power plant lifecycle — from site screening and energy yield assessment through operational monitoring and forecasting.

Last reviewed: 2026-07-03

Key facts:

- Solar and meteo data covers 99% of the world's population with 30+ years of history, at up to 250 m spatial and 1-minute temporal resolution.
- Data accuracy is validated against 320+ ground measurement stations worldwide; methodology is peer-reviewed and published.
- Used by 1,200+ organizations, supporting roughly 9,000+ large solar projects per year.
- Products: Evaluate (PV design and energy yield simulation), Prospect (site screening and pre-feasibility), Monitor (performance monitoring), Forecast (power forecasting), Analyst (data QC and analysis), Solarmaps (free interactive maps).
- Audience: solar developers and IPPs, asset managers and O&M teams, financial institutions and lenders, EPC contractors, grid operators, and solar data analysts.
- Global Solar Atlas, a free public solar-resource mapping tool built with the World Bank/ESMAP, is a related Solargis initiative on a separate domain (globalsolaratlas.info) and is not covered by this file.

## Products

- [Products overview](https://solargis.com/products): Index of all Solargis products across the PV project lifecycle.
- [Solargis Evaluate](https://solargis.com/products/evaluate): Cloud-based PV design and bankable energy yield simulation using 15-min Time Series and TMY solar data.
- [Evaluate — Features](https://solargis.com/products/evaluate/features): 3D system design, ray-tracing PV simulation, and bankable report generation.
- [Evaluate — Data specs](https://solargis.com/products/evaluate/data-specs): Full list of solar, meteo, and PV output parameters with spatial/temporal resolution.
- [Solargis Prospect](https://solargis.com/products/prospect): Remote solar site screening with 30+ validated map layers and pre-feasibility yield estimates.
- [Prospect — Features](https://solargis.com/products/prospect/features): Map layers, PV system configurator, pre-feasibility reports, and finance calculator.
- [Prospect — Data specs](https://solargis.com/products/prospect/data-specs): Solar, meteo, and environmental parameters available in Prospect, with spatial resolution.
- [Solargis Monitor](https://solargis.com/products/monitor): Satellite-based PV performance monitoring and benchmarking without on-site sensors.
- [Monitor — Features](https://solargis.com/products/monitor/features): Real-time satellite data, API access, and multi-site portfolio reporting.
- [Monitor — Data specs](https://solargis.com/products/monitor/data-specs): Solar and meteo parameters at 5-15 minute resolution, delivered via API.
- [Solargis Forecast](https://solargis.com/products/forecast): 14-day solar power forecasting with nowcasting updates every 5-15 minutes.
- [Forecast — Features](https://solargis.com/products/forecast/features): Cloud Motion Vector nowcasting, NWP model blending, and REST API integration.
- [Forecast — Data specs](https://solargis.com/products/forecast/data-specs): Forecast parameters and delivery via REST API or SFTP.
- [Solargis Analyst](https://solargis.com/products/analyst): Software for visualizing, analyzing, and quality-managing solar data.
- [Analyst — Features](https://solargis.com/products/analyst/features): Data visualization, quality assessment, and dataset management tools.
- [Solargis Solarmaps](https://solargis.com/products/solarmaps): Free interactive maps for assessing weather impact on PV performance.
- [Solarmaps — Free monthly maps](https://solargis.com/products/solarmaps/free-monthly-maps): Free monthly solar performance maps showing GHI variability.
- [Integrations (API/SFTP)](https://solargis.com/products/integration): Overview of API and SFTP options for automating solar/weather data delivery into other applications.

## Pricing

- [Evaluate pricing](https://solargis.com/pricing/evaluate): Subscription pricing for Solargis Evaluate.
- [Prospect pricing](https://solargis.com/pricing/prospect): Basic/Professional/Enterprise tiers for Solargis Prospect, with a full feature comparison table.
- [Monitor pricing](https://solargis.com/pricing/monitor): Pricing tiers and plan details for Solargis Monitor.
- [Forecast pricing](https://solargis.com/pricing/forecast): Pricing tiers and plan details for Solargis Forecast.

## Solutions (use cases)

- [Use cases overview](https://solargis.com/solutions): Index of Solargis solutions mapped to project lifecycle stages.
- [Site selection](https://solargis.com/solutions/site-selection): Compare hundreds of potential sites to find the highest-potential solar locations.
- [Energy yield simulation](https://solargis.com/solutions/energy-yield-simulation): Simulate yield potential and reduce financial risk with best- and worst-case scenarios.
- [Optimizing power plant design](https://solargis.com/solutions/optimizing-power-plant-design): Compare power plant configurations under specific environmental conditions.
- [Real power plant performance](https://solargis.com/solutions/real-power-plant-performance): Compare actual vs. expected performance and diagnose underperformance.
- [Power output forecast](https://solargis.com/solutions/power-output-forecast): Manage variability with 14-day power output forecasts for trading and grid compliance.
- [Ground data verification](https://solargis.com/solutions/ground-data-verification): Cross-check ground measurements against satellite data to catch sensor, soiling, and shading issues.

## Services

- [Services overview](https://solargis.com/services): Index of Solargis consultancy services for solar resource and PV performance assessment.
- [Solar Resource & Meteo Assessment](https://solargis.com/services/solar-resource-assessment): Regionally validated solar and meteorological data assessment report for utility-scale projects.
- [Site Adaptation of Solargis Models](https://solargis.com/services/site-adaptation-of-solargis-models): Combines satellite data with on-site measurements to reduce uncertainty of estimated energy output.
- [Quality Control of Solar & Meteo Measurements](https://solargis.com/services/quality-control-of-solar-radiation-meteo-measurements): Identifies errors in measured solar irradiance data and prepares datasets for further use.
- [Customized GIS Data](https://solargis.com/services/customized-gis-data): Solar, meteorological, and PV potential GIS data for use in your own applications.
- [PV Energy Yield Assessment](https://solargis.com/services/pv-energy-yield-assessment): Independent PV energy yield evaluation using Solargis' proprietary simulation tools, for financial risk assessment.
- [PV Performance Assessment](https://solargis.com/services/pv-performance-assessment): Post-operation performance report with a revised long-term energy yield estimate for refinancing or acquisition.
- [PV Variability & Storage Optimization Study](https://solargis.com/services/pv-variability-and-grid-integration-study): Statistical data and insights for designing and managing PV-plus-storage systems.
- [Regional Solar Energy Potential Study](https://solargis.com/services/regional-solar-energy-potential-study): Combined solar resource, meteorological, and geographic analysis for regional PV deployment planning.

## Resources & data

- [Free solar resource maps & GIS data](https://solargis.com/resources/free-maps-and-gis-data): Free downloadable solar resource maps for 200+ countries.
- [Resources hub](https://solargis.com/resources): Index of success stories, blog, maps, webinars, publications, and ebooks.
- [Blog](https://solargis.com/resources/blog): Index of Solargis blog posts on solar data, best practices, and product updates.
- [Ebooks & whitepapers](https://solargis.com/resources/ebooks): Downloadable guides on solar model validation, albedo, and dataset selection.
- [Webinars](https://solargis.com/resources/webinars): Recorded webinars on solar data, project optimization, and industry best practices.
- [Success stories](https://solargis.com/resources/success-stories): Customer case studies, including Apex Clean Energy, candi solar, Iberdrola, and First Solar.
- [Publications](https://solargis.com/resources/publications): Scientific papers, reports, and conference presentations from the Solargis team.
- [Solargis vs. alternatives](https://solargis.com/resources/solargis-vs-alternatives): Comparison of Solargis Evaluate against PVsyst, Solcast, and other tools.

## Best practices & technical articles

- [How to calculate P90 (and other Pxx) PV energy yield estimates](https://solargis.com/resources/blog/best-practices/how-to-calculate-p90-or-other-pxx-pv-energy-yield-estimates): Explains P90/P75/P99 exceedance-probability metrics used by lenders in project financing.
- [The pros and cons of 1-minute, 15-minute, and 60-minute solar data](https://solargis.com/resources/blog/best-practices/the-pros-and-cons-of-1-minute-15-minute-and-60-minute-solar-data): How data resolution affects solar project design and performance analysis.
- [Being certain about solar radiation uncertainty](https://solargis.com/resources/blog/best-practices/being-certain-about-solar-radiation-uncertainty): What solar radiation uncertainty means, how it's calculated, and why it matters for project assessment.
- [Solar resource data: Time Series vs monthly averages](https://solargis.com/resources/blog/best-practices/solar-resource-data-time-series-data-vs-monthly-averages): Why hourly/sub-hourly Time Series data reduces risk compared to monthly-average data.
- [From Time Series to TMY: when to use each](https://solargis.com/resources/blog/best-practices/from-time-series-to-tmy-when-to-use-each): Comparison of the two main dataset types used in solar yield assessment.
- [Solargis' approach to 1-minute data](https://solargis.com/resources/blog/best-practices/solargis-approach-to-1-minute-data): How Solargis and the University of Málaga developed 1-minute resolution solar data.
- [Surface albedo — most frequent questions](https://solargis.com/resources/blog/product-updates/surface-albedo-most-frequent-questions): FAQ on ground surface albedo and its role in bifacial PV modeling.
- [What is lowest expected operating temperature (TLEO)?](https://solargis.com/resources/blog/product-updates/lowest-expected-operating-temperature): How TLEO is calculated and why it matters for safe PV array sizing.

## Company

- [Homepage](https://solargis.com/): Solargis overview — bankable solar data, software, and services for PV projects.
- [About us](https://solargis.com/about/about-us): Solargis' mission, values, and team background.
- [Customers](https://solargis.com/customers): Organizations that use Solargis data and software.
- [Contact us](https://solargis.com/contact-us): General contact form for product and service questions.

## Optional

- [Our expertise](https://solargis.com/technology/expertise): Overview of the science and technology behind Solargis data.
- [Data accuracy & validation](https://solargis.com/technology/accuracy-and-validation): Validation results from 320+ ground stations worldwide, by climate and region.
- [Collateral materials](https://solargis.com/resources/collaterals): Downloadable list of product, technology, and success-story collateral.