Solar and wind are the cheapest sources in most of the world
![](https://canalsolar.com.br/wp-content/uploads/2020/05/0243cbf1978673fe443d7558de6ab4f0.jpg)
The study also points out that both sources represent 90% of all net renewable additions in 2019
Engineers create solar-powered composting unit
![](https://canalsolar.com.br/wp-content/uploads/2020/05/11b8145be285a17777ee4d809bfd4d09.jpg)
An electric composter needs energy for the drying, grinding and cooling process
Economic analysis and preparation of commercial proposals for PV projects
Understand which factors should be considered in solar energy projects