Since the launch of the site almost four years ago, Energy-Storage.News (and PV Tech Storage as it was previously known), has consistently brought you high-quality blogs from both guest contributors and our team of journalists and experts here at Solar Media. Here’s just a selection of some of the best guest blogs we ran from January to June, 2017:

The digital ledger system blockchain has been both praised and misunderstood in equal measure and its relationship to the physical world of electrons is at its earliest stages of exploration. In the latest ‘Storage & Smart Power’ section of PV Tech Power, Carsten Reincke-Collon, CTO of Younicos looks at how energy storage and management software will interact with blockchain-led or blockchain-like systems of data processing and recording.

Powerhive has been delivering access to electricity for rural and remote communities since its inception in 2011, classifying itself as much as a technology company as it is a developer or vendor of energy solutions. Andy Colthorpe spoke with Daniel Porras, vice president for impact and communications and a member of the executive team.

The developer of one of the world’s biggest battery energy storage systems (BESS) installed globally so far will be taking its vanadium redox flow systems into the international market, beginning with a pilot in Belgium.

Over the past couple of weeks, various flow battery makers have touted new sales and supply chain agreements as the fledgling sector fights for a share of the stationary energy storage market.

The rise of energy storage will enjoy a similarly meteoric trajectory to that enjoyed by solar PV deployment in the past and could reach 305GWh of installations by 2030, BNEF has predicted.

German renewables firm BayWa r.e. has commissioned a combined PV and battery system in Zambia’s Chisamba province, to supply irrigation for aquacultural farming.

While decreases in costs continue to make energy storage more and more competitive, financial advisory and asset management firm Lazard has highlighted just how variable project economics can be, citing examples of US projects with 9%, 11% and 21% IRR (internal rate of return).

Having been subject to discussion for years within the academic sphere, energy storage projects have become a topic of high interest to energy sector focused investors in recent years. Philipp Lobnig of E-nable+, an online platform connecting energy projects with investors, offers his views on the key questions these investors should be asking.

Rental solar power company Redavia has commissioned two microgrid PV-plus-storage systems totalling 303kWh of energy storage capacity, both located in the Songwe region in western Tanzania.