Entries by David Anthony

Is Sodium Sulfur (NaS) Battery a viable Grid Energy Storage Solution?

On September 21st, 2011, sodium-sulfur (NAS) batteries installed at Mitsubishi Materials Corp’s Tsukuba Plant, Japan, caught on fire. It took firefighters more than 8 hours to control the blaze, and two weeks to extinguish the fire. NGK Insulators Ltd., the company that manufactured the energy storage system, said the fire authorities are still investigating the cause of the fire. NGK has suspended production of its NAS cells, and advised customers around the world refrain from using their batteries until it tracks down the cause of the fire and finds a solution.

Storing Wind Energy as Hydrogen

By David Anthony and Ken Brown Wind turbines capture the energy contained in wind.  The turbine rotates a shaft which powers an electric generator.  The electricity that flows from the generator can go to the wind farm’s grid connection to be consumed immediately or go to storage.  We have previously discussed the advantages of storage.  […]

Billion Dollar Opportunities in Cleantech

by David Anthony It’s true. Cleantech investment hasn’t worked out exactly how people dreamt it would back in the overly-optimistic days of the last decade. One of the main obstacles deterring venture capital investors from the sector is the frequently lengthy time lag between investment and commercialization. More importantly, the number of successful cleantech exits […]