Release notes

Recent updates of Solargis database and online applications

We are constantly working to improve Solargis. Below are details of recent updates to Solargis model and services.

If you have a feature request, send us your feedback via our contact form.

07 Nov 2019

Stochastic generation of 1-minute solar irradiation data

- For many PV modelling applications it is preferred to have solar irradiation data in 1-minute or 5-minute time step. However, long history of measured solar radiation in 1 minute time step is not easily available. Nor is it possible to receive satellite imagery with frequency of 1-minute.

- We have created a model for stochastic generation of 1-minute solar radiation data from native data resolution of 10/15/30 minutes. The stochastic generation can also be used for generating 5-minute or 10-minute data from 15/30 minute time series. The methodology is explained here:

- Calculation of 1-minute TMY and time series of PV electricity output is also supported.

06 Nov 2019

Solargis model v2.2.0

- Site specific albedo values used for calculation of GTI and shaded GHI

- Surface albedo is a key parameter that determines amount of reflected irradiation falling on the front-side of tilted PV modules . Reflected irradiation also impacts Global horizontal irradiation in regions where terrain is not flat. Until now, we had been using a default albedo value of 0.12 for calculation of time series of GHI and GTI. With release of model version 2.2.0 we will be using site-specific monthly averages of albedo for calculation of reflected irradiation. Technical specification of the albedo dataset to be used can be seen here:

11 Oct 2019

Nowcasting service coverage extended to include parts of Indonesia

- Nowcasting service, based on near-real time processing of satellite imagery, was extended to include region between -5 - +5 Latitude and 115 - 130 longitude.

- Updated coverage map for nowcasting service can be seen here: Solargis API User Guide

- Learn more about Solargis nowcasting service:

09 Sep 2019

Prospect v1.1.0

- New version of economy calculator

- Economy calculator available also in compare tool

- Horizon editor

30 Aug 2019

New data parameter - Water equivalent of fresh snowfall

- Time series of water equivalent of fresh snow fall [unit: kg/m2] is available as a new data parameter. The data is taken from the ERA5 database and is available for full history (except last 2-3 month period).

- Data on fresh snowfall helps to understand frequency of snow events and is useful for estimation of snow losses.

26 Aug 2019

Solargis model v2.1.32

- Input GOES-East satellite imagery for April 2003 was improved. Previously there were some artificially low irradiance values in some regions such as Chile. This issue has now been fixed.