When we introduced Solargis Evaluate 2.0 last year, our goal was clear: to bring high-quality solar data, PV design, and energy yield simulation into a single modern platform that reflects how PV engineers and developers really work.

Solargis Evaluate integrates:

  • High-resolution solar, meteorological, and environmental data
  • 3D PV power plant design module
  • PV Components Catalog
  • Advanced PV performance simulation
  • Analytics and Reporting

Twelve months have passed since launching the platform and we’ve delivered numerous product updates that make Evaluate an even more powerful solution for complete PV project design and evaluation. In this article, we’ll walk you through the most important updates and new features.

Unlimited designs and simulations, one subscription

One of the most visible changes is not in the interface, but in the business model. We’ve had dozens of conversations with users about how they really want to work: with more streamlined workflows, fewer tools, and less friction between data, PV design, and simulation. And we listened.

Enjoy the most accurate data from the very first moment of project development, without having to move the data back and forth between tools for design, PV simulation, and data analysis. Evaluate lets you keep everything in one place.

A €12,000/year Solargis Evaluate subscription now includes:

  • up to 60 projects in Early Stage,
  • an unlimited number of system designs per project,
  • unlimited 15-minute TMY P50 simulations with reports,
  • unlimited collaborators on every project, and
  • high-quality solar, meteorological and environmental data included for each project.

You can now run as many 15-minute TMY P50 simulations as you need, without worrying about “using up” your subscription or optimizing your license limits. If you want to compare multiple layouts, DC/AC ratios, technology options, or design revisions, you can simply do it at no additional cost.

Evaluate Unlimited WEB

Designing closer to real terrain

Many new utility-scale PV projects are not built on perfectly flat desert plots. They sit on rolling terrain, sloped agricultural land or irregular parcels constrained by land availability. Early designs need to reflect that reality to mitigate risks associated with erosion, ground disturbances and construction.

Over the past year, we introduced terrain-following PV design in the 3D Energy System Designer. The PV simulation is performed at the cell level, ensuring precise inter-row shading accuracy even on irregular terrain. You can now:

  • design fixed-tilt and 1-axis horizontal tracker PV systems that adapt to the landscape and follow real-world terrain undulations,
  • respect clearances and orientations while still accounting for slope,
  • model shading and energy yield at cell level, even on complex, mountainous terrain.

Terrain following

You can also upload up to 5 of your own terrain data in GeoTIFF format. This allows you to override default global or regional DEMs with high-resolution, project-specific data, so your row heights, inter-row spacing and shading calculations are based on the terrain you will actually build on, not a smoothed global model.

These features make early-stage layouts far more representative of the real site, reducing uncertainty, the risk of later redesigns and making energy yield simulations more reliable.

Terrain data import

Seeing cost impact as you design

Estimating total project cost is as important as estimating energy yield. To compare options properly, you need to understand how design decisions affect CAPEX.

That’s why we added an interactive bill of materials that estimates project costs as you design. While working on the layout, you can assign unit prices and spare quantities to individual components and watch totals update in real time, with the total CAPEX always visible to reflect the cost impact of design decisions.

You can add custom items that are not part of the predefined library, so the estimate better reflects your actual project scope. Instead of exporting layouts to spreadsheets and stitching everything together by hand, you see both performance and indicative cost in one place, while you are still exploring design options.

Energy System Designer Interactive Bill of Materials

Modelling snow and soiling losses realistically

Accounting for snow and soiling losses has a direct impact on the forecasted energy production. Ignoring them, or assuming a generic fixed loss, can easily result in overly-optimistic PV simulations.

Evaluate now lets you simulate both snow and soiling losses using Solargis models built on high-resolution solar resource and meteorological data. The models account for:

  • local climate and geography,
  • system configuration and tilt,
  • temperature, wind and precipitation patterns.

You can define your own cleaning schedule based on your planned maintenance schedule or use the simulation results to identify periods where cleaning is most impactful and plan events accordingly. These losses are then consistently integrated into the energy yield chain, making bankable reports more realistic and reducing the risk of unpleasant surprises in operation.

Soiling losses

Uncertainty estimates and Pxx values built in

Regardless of how optimistically the energy yield predictions look, a project cannot be financed on promises alone. Probabilistic scenarios are essential for bankability, as most lenders require P50 for expected performance and P90 (or P95) for debt service coverage calculations.

In the past year, we’ve integrated uncertainty estimates and Pxx values directly into Evaluate. You can now request GHI and DNI uncertainty for your project and obtain P10, P50, P75, P90, P95 and P99 values based on the Solargis model’s performance in your region, and interannual variability derived from the long-term historical record.    

Evaluate now provides these values consistently for each project, so you can:

  • stress-test financial models,
  • understand downside risk, and
  • decide whether a project meets your investment criteria.

Project Request Data

Run PV simulations using 1-minute TMY P50 data

Short-term variability matters more than ever for DC/AC sizing, grid compliance, storage and ramp-rate control. To support this in Evaluate, you can now request, export, and run a PV simulation using 1-minute TMY P50 data.

Considering high-resolution 1-min data from the initial design phase is essential for achieving higher accuracy in performance forecasts, optimizing system configuration for local conditions, and maintaining compliance with evolving technical and grid requirements.

Compared to 15-minute or hourly data, 1-minute resolution:

  • reveals short-term irradiance fluctuations that are otherwise smoothed out,
  • allows more refined DC/AC optimisation and clipping analysis,
  • supports more realistic sizing of storage and dispatch strategies,
  • and improves the robustness of grid-related studies.

The result is more robust, efficient, and bankable solar power projects and a closer match between simulated and real-world operation, particularly for projects in highly variable climates or with tight grid requirements. 

Collaboration and continuous improvements

Because Evaluate is cloud-based, collaboration allows multiple stakeholders to access the same project, assumptions, and results in real time. It aligns all stakeholders on project progress and leads to a more coordinated decision-making across geographically distributed teams.

We have introduced a new project collaboration manager. You can allow other users from your company account to view your projects (read-only access) and you can transfer the ownership of the project, so that the owner can edit the project.

In parallel, we’ve made a steady stream of smaller improvements across the Analysis and Reports sections. These include:

  • Monthly and yearly heatmaps to the TEMP parameter
  • Standard deviation to the monthly statistics of the solar resource data
  • Performance ratio (PR) parameter to the monthly statistics table in the PVOUT-specific analysis category
  • A new table with a breakdown of monthly losses to the PV losses section
  • New tables to display additional uncertainty-related data
  • A new chart displaying expected yearly values for different Pxx to the GHI & DNI uncertainty pages
  • A new table showing unavailability losses on the Losses page
  • Monthly performance ratio values for PV statistics

Other improvements related to Exports

  • Users can select a date range for exports
  • Solar and meteorological data can be exported as a ZIP file containing separate files for each exported year
  • Simulated 1-minute TMY data can be exported
  • Users can choose which stage-specific parameters from the PV simulation to export when exporting energy system data

What’s next

We will keep listening to your feedback and improving the platform continuously so stay tuned because we already have plenty of new product updates in the pipeline.

If you’re already using Solargis Prospect, Evaluate is the natural next step. If you’re new to Solargis, it’s a way to bring high-quality solar data, modern PV design and robust simulation into one coherent workflow.

If you’d like to explore Evaluate for your own projects, contact us and our team will be happy to walk you through the platform.

Keep reading

Introducing Solargis Evaluate 2.0: A new standard for PV project design and evaluation
Solargis news

Introducing Solargis Evaluate 2.0: A new standard for PV project design and evaluation

Today, we launched Solargis Evaluate 2.0, the next generation of our Evaluate solution. The new Evaluate is a more advanced, cloud-based platform for complete PV project design and evaluation, equipping project developers and industry experts with all the tools needed to tackle the growing complexity of modern solar projects.

Product news: Soiling losses calculation now available in Solargis Evaluate
Solargis news

Product news: Soiling losses calculation now available in Solargis Evaluate

We’ve just added another layer of precision to Solargis Evaluate. Following the recent launch of snow loss calculations, soiling losses are now also part of our energy yield simulation toolkit – helping developers, investors, and technical advisors model real-world PV performance more accurately.

2025 solar resource overview in maps: A year of exceptional highs and lows
Solargis news

2025 solar resource overview in maps: A year of exceptional highs and lows

As every year, we bring you a map summarizing last year’s global horizontal irradiation (GHI) anomalies, highlighting how much regional weather conditions diverged from long-term averages (LTA). These maps help project developers, asset managers, and investors understand how atmospheric variability may have influenced PV performance worldwide.