DNV SolarFarmer
Bankable 3D-aware PV yield simulations, from automated layout to sub-hourly energy outputs, all in one streamlined tool.
Overview
Solar PV Power Forecast Models
Accurate and flexible PV power models, for the realities of operational solar assets
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Complete, end-to-end operational PV forecasting, for any asset
Solcast offers three solar energy forecasting models - Rooftop PV, Advanced PV and Premium PV - that model PV power for assets of any scale or complexity. With a single API call you can model historical, live and forecast PV power, either in your own notebooks, inside energy platforms, or in your own energy software tool.
Choose the PV forecast power model that you want to work on top of the irradiance and weather data you get through the Solcast API. The Rooftop PV forecast power model is included with Solcast Live and Forecast data.
Premium PV Power Forecast Model
Our most comprehensive PV forecast, trained on your production data
For operators where forecast accuracy has direct financial impact. Our experts generate candidates across physical, ML, neural network, and non-linear model families, then review and select the best configuration for your site. Probabilistic outputs from P10 through P90.
Advanced PV Power Forecast Model
A flexible, powerful model you configure and optimise yourself
Physics-based model built on pvlib with proprietary Solcast extensions. Up to 20 configurable parameters — you configure the model to match your plant's specifications. SDK tools available for self-service tuning.
Rooftop PV Power Forecast Model
Predict PV power at one site or millions, with or without specs and measurement data
A simple, proven 6-parameter empirical model, which can operate on as little as the location and the installed capacity. Specify tilt, azimuth and a loss factor when available, to refine the accuracy. Use our SDK to train the model on your own measurement data. In commercial use at millions of solar assets globally.
Bring investment-grade solar energy forecasting & data into your workflow
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Frequently asked questions about PV forecasts
What outputs do the models provide?
All four models return continuous, gap-free time-series in kW or MW: estimated actuals (-7 days to “now”) and forecasts (“now” to +14 days) at 5-, 15- or 60-minute resolution.
How do I decide which model to use?
Choose by data availability and accuracy target: Advanced PV for high-spec utility sites, Rooftop PV for low-spec sub-MW fleets, Premium PV Power Model (PVML) when you have SCADA and need ultra-low error.
What geographic coverage is included?
Global. The models leverage Solcast’s 1–2 km satellite data and NWP grids, so you can request forecasts for any coordinate worldwide without local sensors.
Can the models handle snow, soiling or curtailment?
Yes. Rooftop PV Power and Advanced PV Power include dynamic snow-cover and soiling factors and Premium PV Power ingests SCADA availability/curtailment tags to refine training.
How do I access the data?
Via RESTful JSON or CSV API endpoints. You can also use the Solcast Toolkit for quick testing, bulk downloads and site management.
Are academic or research licences available?
Yes—discounted licences are offered to accredited researchers and universities.
What support do Solcast and DNV provide?
Solcast offers onboarding guides, sample code, email support and an optional Accuracy-Assist tuning service. DNV provides detailed documentation, training webinars and next-business-day email support..
