Energy storage and battery companies netted US$418 million in funding, while a further US$232 million changed hands in mergers and acquisitions (M&A) of battery or storage companies during 2014, according to a new report from Mercom Capital.

Will the Indian battery market scenario witness a major change? As the power supply in the country continues to be unreliable, the role of batteries has to change from being an emergency back-up solution to a long time power/energy storage solution.

The UK’s Renewable Energy Association (REA) has launched two new trade groups to represent the solar and storage industries respectively.

Two recent reports, one from credit rating and investment advisory agency Moody’s, the other from technology and tech market analysts Navigant Research, appear to show divergent views on the potential of distributed energy storage, including residential solar-plus-batteries.

Just 3–4% of electricity generated by utilities globally is stored today, according to the International Energy Agency. This is despite the fact that storage can help overcome the energy ‘trilemma’ of curbing rising energy prices, the need to ensure the security of supply and creating a low carbon economy. So, what’s the hold-up? Taking the UK as his starting point but with lessons transferrable to other regions, Roger Lin of NEC Energy Solutions explains and counters some of the myths that stand in its way.

A 1MWh battery developed by US manufacturer Aquion Energy and installed at a private estate in Hawaii will allow the area’s residents to meet almost all of their electricity demand with power generated from a connected solar array.

A US regional electricity transmission and distribution operator’s plan to install energy storage batteries could enable ‘benefit stacking’ as a way of overcoming “crippling challenges” faced by energy storage, according to one energy expert.

Covering the energy storage market has been an interesting – if occasionally bumpy – ride so far and we can expect it to be an even more vibrant and action-packed space from here on in. From the top five most-read news stories to some great interviews via our regular guest blogs, we’ve rounded up some highlights from our year.

The US market for solar-plus-storage is predicted to grow more than twentyfold in the next three years, rapidly expanding from US$42 million in value this year to US$1 billion by 2018, according to GTM Research.

In the second part of his exploration of the areas of the world taking a lead in supporting the deployment of storage, Andy Colthorpe looks at Germany, Japan and Puerto Rico.