The Marmite heat pump. The James Blunt of heating. And now Octopus has done something cool. TJ Root talks engineering, online warfare and the £500 idea that could change how Britain heats and cools its homes.

Just seven weeks after plug-in solar became legal in Great Britain, two more manufacturers have announced products aimed at making household electricity generation cheaper, simpler and more accessible.

British drone developers are focussing on construction. But they are missing one thing.

A genius product with a memorable name? What would it be like to have your own personal engineer on hand - for every stupid question.

Wales is proposing something radical: bringing government, finance and communities together to build, own and benefit from energy infrastructure. It's a recognition of where the renewable energy market is heading and could establish an international precedent.

Renewr believes the barrier to commercial renewable deployment isn't simply technology or demand. It's the transactional model used to sell it.

There is an idea that in this world we are all angry with each other. It feeds the algorithms. It makes us watch outrage.

Stephen Coyle is an anomaly, he's unique. Well sort of.

Whilst some boundaries are moving, some barriers still exist. It's not gender wars, it's maths.

There's a problem with coordination. We've been told about it, and witnessed it. Any solutions?

It can often be a very simple idea, used in a clever