A household-scale DC microgrid would operate autonomously and in coordination with other microgrids to maintain a stable DC power supply that is optimized for efficiency, storage and local . Contact online >>
A household-scale DC microgrid would operate autonomously and in coordination with other microgrids to maintain a stable DC power supply that is optimized for efficiency, storage and local
As microgrids appear across the country, they will play an increasingly important role alongside the grid system to deliver clean and reliable power. Japan is currently aiming for 22%-24% of its energy to be produced by renewable sources by 2030, which will include 64GW of solar power.
Abstract: The paper examines Japan''s capital city of Tokyo''s "Zero Emission Tokyo Strategy." Our work shows that Tokyo''s strategy is particularly important in light of the 2030 Agenda''s emphasis on greenhouse-gas emissions reduction, equitable sustainability, and building holistic resilience against all hazards.
Benefits of Microgrids. There are several benefits to using microgrids, including: [1] Increased Reliability: Microgrids can provide a more reliable source of energy, as they can continue to operate even if the traditional power grid goes down. This is especially important for critical infrastructure such as hospitals, schools, and emergency
The project at the Yokota air base near Tokyo, funded through guaranteed energy savings, includes a combined heat and power plant with microgrid controls to support the base''s critical buildings while also improving the efficiency of more than 450 buildings, according to Schneider.
The project at the Yokota air base near Tokyo, funded through guaranteed energy savings, includes a combined heat and power plant with microgrid controls to support the base''s critical buildings while also improving the efficiency of more than 450 buildings, according to Schneider.
The project will provide an alternate source of power to most of the base''s mission-related buildings, easing growing concerns about power reliability in the area and reducing utility costs, Schneider said.
The Air Force has become a leader within the Department of Defense in modernizing its bases to prevent power and systems interruptions from affecting national security, according to Schneider, one of the largest and most active microgrid companies.
"Along with assuring mission readiness, this project is also playing a critical role in helping the Air Force reduce its carbon footprint and sustainability impact," said Steve Wilhite, Schneider senior vice president of energy and sustainability services.
When the project is finished in about three years, Schneider expects the base will save about 30 million gallons of water, 80,000 MMBTU of natural gas and 75 million kWh annually.
The contract grew out of a 2017 request for proposals from energy service companies that focused on a desire for "concentrated reduction" in energy intensity and water use.
Ameresco recently announced that it has begun work on a military energy project that includes a microgrid, this one, a $173 million endeavor at the Norfolk Naval Shipyard in Portsmouth, Virginia.
Before the Fukushima earthquake and tsunami four years ago this month, Toyota''s automotive plant in Miyagi Prefecture, north of Fukushima, had relied entirely on the Tohoku Electric Power Co. for energy. But when the disaster shut down power to its plant for two weeks, managers realized that the company needed a more secure source. The factory couldn''t be independent of the electric grid, but it could manage that energy better—and supplement it.
"The earthquake was a big turning point," says Atsuji Morita, a project manager for Toyota. "We had this big blackout and realized we needed a new system to increase our energy security."
That''s a common theme in Japan these days. After the disaster knocked out power to much of eastern Japan, smart microgrid projects from industrial to residential changed their approach. Initially focused primarily on energy efficiency, projects have shifted the emphasis to generating energy where it is consumed and to having a diversity of power sources.
In February 2013, Toyota formed a limited liability partnership called the Factory Grid, or F-Grid, to create a smart grid that manages and provides supplemental power to seven factories (most of them owned by Toyota) within the industrial park.
F-Grid has built its own natural-gas-fired cogeneration plant, which produces 7,800 kilowatts. That plant is supplemented by 740 kW from solar panels. And, in a creative twist, the factory uses an array of old Prius batteries capable of adding 90 kW of power from energy stored during slow periods at the industrial park. In an outage, even if all other power sources fail, the Prius batteries can supply enough power to keep satellite phones and computers running for three to four days.
The microgrid is operated by a community energy management system, which polls each facility about power needs and manages distribution of energy among them. In the event of an outage, F-Grid plans to also supply power to the local disaster response center, located in a village about a kilometer away.
The shift to emergency energy also happened in a smart-city project, called Kashiwanoha, on the outskirts of Tokyo. The project is backed by the real estate developer Mitsui Fudosan, Hitachi, and Sharp, in cooperation with local government, the University of Tokyo, and Chiba University. This smart city has been in development for several years as a retail and business area. Last summer, the project started offering apartments and condos.
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