「Smart grid」カテゴリーの投稿

TEPCO buys 17 million smart meters from global vendors 2012/01/23

According to business paper Nikkei (Jan 22, 2012), Tokyo Electric Power Company (TEPCO), the largest energy provider in Japan and the operator of Fukushima nuclear power plant, is commencing an open procurement of 17 million smart meters, whose estimated amount is USD 2.2 billion at minimum, between 2012 and 2018. Previously, suppliers of such a large procurement were limited to domestic companies having close relationship with TEPCO, but the power provider will allow global suppliers to join this time. Due to the severe accident of Fukushima nuclear, TEPCO owes numerous liabilities of damage compensation of more than USD 40 billion...

China’s Smart Grid for the future export 2011/01/31

It is obvious that smart grid is nothing but agreed upon story about investment. In United States, President Obama revealed national smart grid policy immediately after the victory in presidential election. Based on his intention, Department of Energy made detailed plan of $39 billion smart grid investment and awarded funds to many power companies mostly for installation of smart meters. But in some regions, after deployment of smart meters, consumers started complaining about the result of smart metering. They said electricity price went up extremely higher than before. We know at present this happened because power companies lacked appropriate communication...

Japanese Variable Speed Pumped Storage Hydroelectricity may stabilize coming Smart Grid 2011/01/23

We know coming Smart Grid needs grid-scale storage to incorporate fluctuations from lots of distributed power generators of renewable energy. But wen we hear the word grid-scale storage, we usually imagine it is a futuristic realization. However, there already exists one that is in operation world wide. That is Pumped-Storage Hydroelectricity (PSH) power station.As to fundamental description about PHS, visitors had better to see here and here. According to a paper Electrical Energy Storage - Large Scale, Japan has the second largest power capacity of PSH next to US. Since Japan is a mountainous country, there may be a lot...

Zero Energy Building not soon, but coming 2010/12/12

As a country that doesn’t have fossil energy source, Japan has kept saving energy as much as possibl...

Panasonic’s cost effective smart grid for consumer 2010/12/11

Panasonic revealed two key products of smart grid for home use in a trade show held at Tokyo this week. The trade show “Eco Products 2010” is Japan’s largest one for manufacturers selling eco-friendly products. Major players in smart grid including Hitachi, Mitsubishi Electric, Toshiba and Panasonic had their booth in the venue Tokyo Big Sight. One key product of Panasonic is a small sized lithium ion battery unit with 5 kWh capacity appropriate to place outside the house. “This battery unit enables to run all the appliances at average home for half a day”, Panasonic’s senior engineer hoping to...

» このブログのTOP

» オルタナティブ・ブログTOP