Europe’s installed base of electrical energy storage leaped by almost 50% during 2017 but perhaps the bigger takeaway is the growing share of battery systems installed behind-the-meter, an analyst has said.

As might be expected, California’s main utilities led the way in 2016 for US state-by-state deployment of energy storage, with Southern California Edison installing as much as 40% of the national total, according to a new survey.

Younicos’ CEO Stephen Prince gives the lowdown on the hottest trends in energy storage, why standardisation will create a mainstream market and more.

Every year sees energy storage build on the success of the preceding one, it seems, and this year we were able to carry insights and opinions from some of the best placed participants and observers. Here’s our picks for the content most representative of the year it’s been, as well as the 10 most read news stories on the site.