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Fully Online Learning

Everything aspect of the learning is done online. Starting from the registration to the certification.

Globally Recognised

Our courses are widely recognised

Easy to Use

The website is easy to use and user friendly

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After taking our course, you will receive a certificate that is widely recognised


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This safety course is suitable for all technicians and solar installers. How do you keep safe whilst installing a solar system, climbing rooftops, ...
19 Lectures
Appropriately sizing your batteries, inverters, solar panels and charge controller is very key and foundational if any solar system is going to las...
32 Lectures
Maintenance and Troubleshooting is an important aspect of an installed solar system which ensures it’s sustainability. It is an increasingly ...
10 Lectures


Fully Online

All the course videos and examinations, and assignments required for certification will be done absolutely online. You will get a globally recognised certificate 

Join a global network

We offer a vast network of alumni with whom you may collaborate on projects, learn from one another, and many other things. This comes at no further cost to you.

Join an initiative

We enable our students to participate in a global campaign to make the world a better place by making the platform open to anybody in the globe.



Kehinde Songonuga
Kehinde SongonugaReview on The Concept and Science of Climate Change; Understanding the Climate Menace
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Clear and concise class. I learnt a lot about climate change. I choose to be an advocate. Thank you Retti Virtual University
JACOB ABIDOWOReview on Complete Course on Solar PV Design and Installation- with Practical Hands-On Installation Videos
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Nice course
DanielReview on The Concept and Science of Climate Change; Understanding the Climate Menace
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A well simplified and detailed free course on CLIMATE CHANGE.
Dara Base
Dara BaseReview on Solar Installation Safety Course
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Very informative. Well done
Rasaq Adio Adeleye
Rasaq Adio AdeleyeReview on The Complete Course on Solar PV Entrepreneurship
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The Complete Course on Solar PV Entrepreneurship. The course was very impressive and technically detailed. The experience gained from the programme will enable the participants to render innovative and cost-effective services that will be pivoted to making our clients achieve business sustainability in the 22nd Century, and beyond. Indeed, attending the programme will enable me to contribute towards making Nigeria environmentally-friendly through encouraging clients to use clean Renewable Energy as a means to creatively navigate the power challenge confronting them in their production processes. Overall, it is pertinent to mention that I feel delighted to have attended the programme conducted by the RETTI VIRTUAL UNIVERSITY. Best Regards, Rasaq Adio Adeleye.

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Become a Retti Affiliate

Join Retti in selling it’s courses and earn a 20% commission. Refer a friend, family, work community to learn about solar energy with Retti today and get paid.
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Become a Student

Being a student of Renewable Energy RETTI Virtual University is a privilege that very few have and you are special to have chosen to learn from us. Our courses are taught by only professionals in the industry with years of experience and capacity to impact knowledge on anyone. Sign up today to be a student of a reputable training institute.
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Be a Solar Entrepreneur

The courses on this site was created to accommodate people willing to learn how to own a business of their own with solar. We have special courses to help you achieve this aim.
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