Photovoltaics or photovoltaic systems

I have the following sentence and I'd like to hear your opionon on that:

"Electrictiy generated from photovoltaics..."

Is it correct to use the term "photovoltaics" or do I have to use "photovoltaic systems"?

I'd appreciate every comment and would be thankful for your help.

It is correct because the meaning is clear, unambiguous, and concise.

There are already long-established precedents in scientific usage: mechanics, electrostatics, hydraulics, kinetics ... a long list of nouns derived from adjectives, in each case encompassing a large body of knowledge or practice within one word. It is neither necessary nor helpful to replace such terms by noun phrases such as “mechanical systems” or “photovoltaic cells” unless the further discussion of the matter justifies it.