Remember the iconic Financial Regulator TV ad from the mid-2000s?
A man stands up on a Dublin bus and loudly announces:
“I don’t know what a tracker mortgage is.”
One by one, other passengers admit to things they don’t understand either.
The point wasn’t that anyone was foolish. Quite the opposite.
It was a reminder that lots of us quietly pretend to understand technical terms because we assume everyone else does.
“Solar PV” is probably one of those phrases today.
You’ll see it on installers’ websites, SEAI information, energy articles and news reports.
Some people know exactly what it means but many don’t, which is perfectly understandable.
So let’s answer one of the simplest – and most common – questions homeowners ask.
What does Solar PV actually mean?
What Does PV Stand For?
PV stands for Photovoltaic, which is a bit of a mouthful.
The term comes from two sources.
“Photo” refers to light and “Voltaic” relates to electricity.
Put the two together and photovoltaic simply describes the process of converting light into electricity.
Which is exactly what solar panels do.
So when someone talks about a Solar PV system, they’re simply referring to solar panels that generate electricity.
Is Solar PV the Same as Solar Panels?
For most homeowners, yes, and the two terms are often used interchangeably.
If someone says they’re installing Solar PV, they almost certainly mean they’re installing solar panels that generate electricity for the home.
It’s industry terminology rather than a completely different technology.
What’s the Difference Between Solar PV and Solar Thermal?
This is where some confusion can arise.
Solar PV generates your electricity, while solar thermal heats your water.
Years ago, solar thermal systems were relatively common in Ireland.
Today, most homeowners looking to reduce electricity bills are talking about Solar PV, which is why you’ll hear the term much more often.
Why Do Installers Say “Solar PV”?
Mostly because that’s the technical name for the technology.
It’s a bit like saying “EV” instead of electric vehicle or “BER” instead of Building Energy Rating.
People working in the industry use the abbreviation every day.
Homeowners, understandably, often don’t.
The important thing to remember is that when an installer talks about Solar PV, they’re simply talking about solar panels that generate electricity.
Does Every Solar System Use PV?
If you’re generating electricity from rooftop solar panels, then yes.
Every modern domestic solar electricity system uses photovoltaic technology.
Whether it’s a small system supplying part of a home’s electricity or a larger installation with battery storage and EV charging, the electricity itself is generated using photovoltaic cells.
Why Does the Term Matter?
To be honest, it doesn’t matter very much.
You don’t need to remember the word photovoltaic to decide whether solar is right for your home.
But understanding the terminology does make researching solar a little easier.
Suddenly, phrases like “Solar PV installation,” “Solar PV grants,” “Solar PV system,” and “Solar PV installer” feel far less intimidating, as they’re all referring to essentially the same thing.
Don’t Be Put Off by the Jargon
Every industry has its own language.
Mortgage brokers talk about LTVs. Car dealers mention PCPs.
The solar industry has PV, inverters, kWh and kWp.
It can feel like learning another language at first, but homeowners don’t need to become solar engineers.
They simply need enough information to make a confident decision about what’s right for their home.
A good installer should always explain the terminology rather than assume everybody already understands it.
Common Questions About Solar PV
What does PV stand for in solar panels?
PV stands for photovoltaic, which describes the process of converting daylight into electricity.
Is Solar PV the same as solar panels?
For most homeowners, yes. Solar PV is simply the technical term for solar panels that generate electricity.
Is Solar PV the same as solar thermal?
No. Solar PV generates electricity, while solar thermal systems heat water.
Why do installers call it Solar PV?
Because photovoltaic is the technical name for the technology used in modern electricity-generating solar panels.
Thinking About Solar for Your Own Home?
Understanding the terminology is only the first step.
With over 20 years’ experience and more than 25,000 installations across Ireland, Activ8 Solar Energies helps homeowners cut through the jargon and understand how solar works in real life.
If you’d like to learn more about solar panels, battery storage, EV charging, available grants and projected savings, you can get in touch with the Activ8 team here.