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| | Learn more [http://www.nextekpower.com/blog/news/secret-dc-grid-has-been-powering-parts-of-san-francisco-since-1879/ here]. | | Learn more [http://www.nextekpower.com/blog/news/secret-dc-grid-has-been-powering-parts-of-san-francisco-since-1879/ here]. |
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| − | | [[File:Nextek Power Systems - The Evolution of Distributed Electrical Power.pdf|border|right|250px|File:Nextek Power Systems - The Evolution of Distributed Electrical Power.pdf|alt=File:Experience from First Solar Mini Grid Service in Bangladesh.pdf]] | + | | [[File:Nextek Power Systems - The Evolution of Distributed Electrical Power.pdf|border|right|300px|File:Nextek Power Systems - The Evolution of Distributed Electrical Power.pdf|alt=File:Experience from First Solar Mini Grid Service in Bangladesh.pdf]] |
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| | *In our lifetime, the load (what we use electricity for), has gone from almost entirely AC to entirely DC. Not a lot of semi-conductors were in use before the 1970s. | | *In our lifetime, the load (what we use electricity for), has gone from almost entirely AC to entirely DC. Not a lot of semi-conductors were in use before the 1970s. |
| | *Power convertors can take AC to DC, or DC to AC, however, a more ideal state would have fewer conversions. What does this mean for battery storage? | | *Power convertors can take AC to DC, or DC to AC, however, a more ideal state would have fewer conversions. What does this mean for battery storage? |
| − | *The adoption of DC in developed countries has been mostly influenced by fuel optionality and efficiency factors. Eg:<br/> | + | *The adoption of DC in developed countries has been mostly influenced by fuel optionality and efficiency factors. Eg: |
| − | **DTE Energy, the largest utilities in USA, have 2 floors of their headquarters for DC power to run their lighting systems. This DC house is built in their parking lot. <br/> | + | **DTE Energy, the largest utilities in USA, have 2 floors of their headquarters for DC power to run their lighting systems. This DC house is built in their parking lot.<br/> |
| − | **PNC Bank put DC lighting in their first net zero bank, and have 2,500 more to go! <br/> | + | **PNC Bank put DC lighting in their first net zero bank, and have 2,500 more to go!<br/> |
| − | **In Japan DC micro-grids were the only source of electricity for miles after the tidal wave. <br/> | + | **In Japan DC micro-grids were the only source of electricity for miles after the tidal wave.<br/> |
| | **The Sun blazer One designed and built by Nextek, charging station has deep cycle batteries. It provides 3 days of light and cellphone charging. Whole Foods Berkeley was one of their first customers and they love the DC system which rides through their outages. | | **The Sun blazer One designed and built by Nextek, charging station has deep cycle batteries. It provides 3 days of light and cellphone charging. Whole Foods Berkeley was one of their first customers and they love the DC system which rides through their outages. |
| − | *Areas with the largest changes taking place: <br/> | + | *Areas with the largest changes taking place: |
| − | **Lighting is intrinsically DC. <br/> | + | **Lighting is intrinsically DC.<br/> |
| − | **Displays: retail advertising on every shelf of the store. <br/> | + | **Displays: retail advertising on every shelf of the store.<br/> |
| − | **Vehicles: as more electric vehicles, more charging stations needed, naturally gravitating towards DC. <br/> | + | **Vehicles: as more electric vehicles, more charging stations needed, naturally gravitating towards DC.<br/> |
| − | **Computing: giant consumer of DC. <br/> | + | **Computing: giant consumer of DC.<br/> |
| | **Developing world issues are being addressed through micro grids. Most of the world isn’t waiting for AC infrastructure. Thus they are huge drivers economically – a big piece of business. | | **Developing world issues are being addressed through micro grids. Most of the world isn’t waiting for AC infrastructure. Thus they are huge drivers economically – a big piece of business. |
| − | *Efficiency gains from AC to DC:<br/> | + | *Efficiency gains from AC to DC: |
| − | **It's beneficial to power storage to have batteries live in DC. <br/> | + | **It's beneficial to power storage to have batteries live in DC.<br/> |
| − | **Increased safety. <br/> | + | **Increased safety.<br/> |
| − | **You don’t need licensed electricians and it takes fewer hours to install. <br/> | + | **You don’t need licensed electricians and it takes fewer hours to install.<br/> |
| − | **The product costs less to install and is cheaper to own. <br/> | + | **The product costs less to install and is cheaper to own.<br/> |
| − | **It's reliable. For example, NNT facilities in Japan researched stopped after 7 years and went DC. <br/> | + | **It's reliable. For example, NNT facilities in Japan researched stopped after 7 years and went DC.<br/> |
| − | **Change over in buildings, you can move things around while people are working, and can work on everything hot. <br/> | + | **Change over in buildings, you can move things around while people are working, and can work on everything hot.<br/> |
| | **Allows you to provide wireless control and cheaper cost. In the USA it is a big deal as federal investment tax credit gives 30% cost of solar back to customer. People can take this system (integrating solar and power for connected loads) –> ethical double dipping. | | **Allows you to provide wireless control and cheaper cost. In the USA it is a big deal as federal investment tax credit gives 30% cost of solar back to customer. People can take this system (integrating solar and power for connected loads) –> ethical double dipping. |
| − | *Large corporations are beginning to re-imagine their products as DC. <br/> | + | *Large corporations are beginning to re-imagine their products as DC. |
| | **Intel have a whole power lab in New Mexico. Lennox have solar assisted products. All the autos are looking at integrated charging structure, economics of providing buffer to grid. Integrated battery system. | | **Intel have a whole power lab in New Mexico. Lennox have solar assisted products. All the autos are looking at integrated charging structure, economics of providing buffer to grid. Integrated battery system. |
| | *IEEE Pilot in Haiti: demonstrating how DC can advance efficiency and interoperability. Yellow box: has USB port for phone charging. 40 of the boxes can fit in charging container under solar panel. | | *IEEE Pilot in Haiti: demonstrating how DC can advance efficiency and interoperability. Yellow box: has USB port for phone charging. 40 of the boxes can fit in charging container under solar panel. |
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| | == <span class="mw-headline" id="Questions_Posed">Q & A</span> == | | == <span class="mw-headline" id="Questions_Posed">Q & A</span> == |
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| − | 1. Does the price include the power box? <br/> | + | 1. Does the price include the power box?<br/> |
| | *Nope, just the solar boxes. Power boxes are about $46 a piece.<br/> | | *Nope, just the solar boxes. Power boxes are about $46 a piece.<br/> |
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| | __NOTITLE__ | | __NOTITLE__ |
| | | | |
| − | [[Category:Conference_Documentation]]
| |
| − | [[Category:Microenergy_Systems]]
| |
| − | [[Category:Electric_Connections]]
| |
| | [[Category:Electricity]] | | [[Category:Electricity]] |
| | + | [[Category:Electric_Connections]] |
| | + | [[Category:Microenergy_Systems]] |
| | + | [[Category:Conference_Documentation]] |
1. Does the price include the power box?
2. 1 cent per person per day means what?
