Reinventing storage

Home Technologist 04 Energy storage Reinventing storage

Seven innovative ways to retain excess electricity — from mature to experimental technologies.

Infographic illustrating seven innovative ways to retain excess electricity: pumped hydro, batteries, compressed air, thermal, flywheel, hydrogen, and advanced electromagnetic

Journalist: Daniel Saraga
Graphics: Benjamin Schulte

Sources: Pathways for Energy Storage in the UK, The Centre for Low Carbon Futures (2012); European Energy Storage Technology Development Roadmap towards 2030, European Association for Storage of Energy and European Energy Research Alliance (2013); Energy storage costs, Anasim (2009)

More in this special report on energy storage: Too little, too muchA tank full of sunshine; 2050: towards a renewable Europe; The high price of inaction


The power of dams

Hydro is the top source of renewable electricity in Europe, but environmentalists are concerned about the proliferation of new projects. 
Milo Swinkels

A young field of specialisation.
CIS Denmark

The Copenhagen International School’s new building and its 12,000 coloured solar panels is bound to be one of “5 solar-powered…

Using hot stones and steam turbines, researchers seek new solutions for storing green surplus energy.