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Four panel brands rank in the top five of more than ten countries. Two inverter brands do. No battery brand does — despite batteries having half again as many brands competing.

The UK’s fastest-growing battery markets are its smallest ones. They are also the markets where the strategy that won England works least well.

A brand can lose share without losing a single customer, and gain share while selling exactly what it sold last quarter. The number every manufacturer reports to the board is the one that explains least about what to do next.

Australia's best-selling battery size lost most of its market within a month of the rebate changing. The quarterly average recorded a fall of a tenth. In the medium to long term, that’s actually a good sign.

Europe's most mature battery market is the one where installers are doing less battery work each month. That isn't a contradiction; it's a stage.

The most popular commercial solar system in Australia is one almost nobody actually wanted. For fifteen years, businesses with the roof space and the power bills to justify 250, 400, even 800 kilowatts have installed 99 instead. And they were right to.

Four weeks ago I told a room of Australian clients that Ireland’s battery growth was probably coming bigger batteries. I have since gone through the installer-level data properly. I was looking in the wrong place.