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Headshot of Joanna O'Loan, Knowledge Manager at Energy Saving Trust

Joanna O’Loan

Knowledge Manager

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

 

Articles by Joanna O’Loan

Five things you should do to prepare your home for winter

28 October 2026

Infrared heating explained

26 October 2026

Electric storage heaters

26 October 2026

How to get rid of damp

26 October 2026

Air-to-air heat pumps

20 October 2026

Should I switch to a time of use tariff?

19 October 2026