Joanna O’Loan
Since 2019, I’ve been helping people understand and adopt energy efficiency and zero-carbon technologies through research, analysis, writing, training, and advice at Energy Saving Trust. I’m especially excited about the opportunities net zero brings to improve our homes, not just in terms of carbon, but in comfort, health, and quality of life.
My background is in chemical engineering and with a lifelong curiosity about how things work, I’m passionate about making complex topics accessible.
I enjoy being outdoors – whether it’s Munro bagging, forest and coastal walks, or just enjoying a coffee al fresco – and practicing yoga.
Areas of expertise
- Making homes zero carbon – from heat pumps and electric heating to solar panels
- Everyday energy use – helping people understand how their appliances and habits affect energy bills
- Warm, energy-efficient homes – advice on insulation and ways to make homes more comfortable and efficient
- Media spokesperson
Media appearances
- BBC Morning Live (TV)
- BBC Sliced Bread (podcast)
- BBC The Big Green Money Show (podcast)
- Saga Magazine
- The Scotsman
- The Times
- The Sun
- Financial Times
Articles by Joanna O’Loan
Solar panels
Solar panels capture the sun’s energy and convert it into electricity for your home. Here’s how they work and their benefits.
Solar panel installation: a step-by-step guide
Want to get started with solar? Our step-by-step guide will take you through the solar panel installation process.
Which areas of the UK have the most solar panels?
Find out which areas of the UK have the most solar panels, and which areas have the greatest potential for the ‘rooftop…