Solar jargon demystified: a beginner’s handbook

team egg | 06/01/2025

Confused by solar energy jargon? Our simple guide breaks down key solar terms, making it easy to understand solar power and make informed decisions for your home. Perfect for beginners!

At a Glance

Confused by solar jargon? We've got you covered with simple explanations for all the key terms

From inverters to net zero, learn the lingo and make solar energy work for you

Are you feeling overwhelmed by the technical jargon surrounding solar energy? Terms like kWh, inverters, and solar efficiency can all sound complicated, but understanding them is essential when considering solar panels for your home.

In this blog, we’re breaking down the most common solar energy terms into simple, everyday language. Whether you’re exploring solar panel options, learning about battery storage, or comparing installation quotes, this guide will empower you to make informed decisions.

Say goodbye to confusion 👋 and hello to solar clarity. 🌞

Sunny Speak: the ultimate solar glossary

Battery Storage

Rechargeable energy storage that saves surplus power from your solar panels for later use, like having sunshine on demand.

Energy Performance Certificate (EPC)

A report showing a property’s energy efficiency and estimated costs. It’s required when properties are built, sold, or rented and ranges from A (most efficient) to G (least efficient).

DNO (Distribution Network Operator)

The company responsible for maintaining the local electricity network that delivers power to your home. If you install solar panels, your DNO may need to approve your connection to the grid.

FIT (Feed-in Tariff)

A government program (ended in 2019) that helped homeowners install solar panels by paying them for the energy they generated. Nearly a million UK homes benefitted.

The Grid

The national network that delivers electricity across the country. Solar systems with battery storage can help reduce reliance on it.

Inverter

A key component of a solar energy system that converts the direct current (DC) electricity generated by your solar panels into alternating current (AC) electricity, which is used by most household appliances.

kW (Kilowatt)

A unit measuring electric power.

kWh (Kilowatt Hour)

The amount of energy used to power a 1kW appliance for one hour. A typical UK household uses about 4 kWh of electricity daily.

Net Zero

Balancing the carbon emissions produced with an equivalent amount removed from the atmosphere. Reducing emissions and offsetting what’s left is key.

NPV (Net Present Value)

A way to calculate the lifetime financial benefit of an investment, like installing solar. A positive NPV means your project pays off.

PV (Photovoltaic)

The technology that converts sunlight into electricity, making solar panels the powerhouse of renewable energy.

Running Costs

The annual expenses for maintaining a solar system, including cleaning, upkeep, and replacing parts like inverters or batteries.

SEG (Smart Export Guarantee)

A scheme where energy suppliers pay homeowners for the solar energy they generate and sell back to the grid.

TOUT (Time of Use Tariff)

A flexible electricity pricing system where rates change throughout the day. It’s perfect for solar users who can store energy when it’s cheap and sell it back when prices peak.

Got a solar buzzword you don't understand? We'd be happy to help! Let us know @egg.crackingenergy

Keep up with the current

Sign-up to our newsletter to receive all the latest news, advice and content as well as unmissable offers and promotions.

arrow-right-white
We take our privacy obligations seriously, you can opt out from updates at any time - for more details, please see our Privacy Policy.