Month: May 2017

Lithium Battery Facts

Source https://www.flickr.com/photos/evgo/6545153803/, license Compare Lithium Ion Lead Acid Cost to Charge Vehicle Compared to Lead Acid ENERGY DENSITY BY WEIGHT. Lithium-ion batteries have 3 times the energy density by weight of lead-acid batteries.  This means that for the same weight, a lithium-ion battery contains 3 times as much energy.  Source YouTube — Lithium Ion Battery Explained. ENERGY DENSITY BY VOLUME. Lithium-ion batteries have 6 times the energy density by volume of lead-acid batteries.  This means that for the same volume (size)  a lithium-ion battery contains 6 times as much energy.  Source YouTube — Lithium Ion Battery Explained. MEMORY EFFECT. Lead-acid batteries have very little...

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Battery Improvements Fuel New Technologies

A long time ago (in the nineteen-sixties), when I was growing up, batteries cost a few bucks and we used them in flashlights, transistor radios, and kiddie toys; and they were pretty uncomplicated devices. Fifty years later consumers spend a lot more on batteries and battery-based technology. Electric car batteries — $10,000.00. Residential solar power backup batteries — $5000.00 to $20000.00. The economics of batteries have changed enormously — batteries will play a major role in residential power, commercial power, transportation, and communication. World’s Largest Building to Manufacture Batteries To put all this in perspective, consider the Tesla Gigafactory,...

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Battery Basics

A long time ago (in the nineteen-sixties), when I was growing up, batteries cost a few bucks and we used them in flashlights, transistor radios, and kiddie toys; and they were pretty uncomplicated devices. Fifty years later consumers spend a lot more on batteries and battery-based technology. Electric car batteries — $10,000.00. Residential solar power backup batteries — $5000.00 to $20000.00. The economics of batteries have changed enormously — batteries will play a major role in residential power, commercial power, transportation, and communication. World’s Largest Building to Manufacture Batteries To put all this in perspective, consider the Tesla Gigafactory, world’s largest building opened last year, outside of Sparks Nevada.  Tesla Corporation plans to produce more lithium ion batteries at this one location than were produced in the entire world in 2013, by 2018 approximately 35  GWh/year of its new 2170 batteries.  According to Tesla CEO Elon Musk the 2170 will be the cheapest lithium ion battery ever with the highest energy density,. Says Musk, “We have the best cell in the world that is also the cheapest cell.” Battery Technology/Prices in Rapid Flux According to a 2017 study by McKinsey and Company battery costs have fallen from approximately $1,000.00 per kWh in 2010 to $227 per kWh in 2016, and are projected to fall below $100/kWh by 2030.  $100.00/kWh is considered to be the magic price point for battery storage where electric cars...

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Useful Microgrid Links

NREL Project Integrate OMNETRIC Group Library The value of the microgrid as a complementary technology INTEGRATE Project Points to New Methods of Electric Grid Control COMMUNITY ENERGY: POWER TO THE PEOPLE Omnetric Group Page Decentralized Energy Blog Rural Africa takes to decentralized power Singapore Open Data portal A QUARTERLY LOOK AT AMERICA’S FAST-EVOLVING DISTRIBUTED SOLAR POLICY CONVERSATION   CABINET IN YOUR COMMUNITY: Grid Modernization Fact...

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Six Feet of Superfood

The health benefits of collards are well documented — calcium, vitamin E, magnesium, phosphorus, folic acid (see What Are the Health Benefits of Cooked Collard Greens and The World’s Healthiest Foods-Collard Greens).  This year I was amazed at the productivity of the plants in my little 6-7 foot wide patch of collards. I literally could not eat all the collards my patch was producing and I gave away many bags of delicious tender succulent leaves. My secret?  Soil preparation, mulching, water, and fertilizer. Out-Perform the Commercial Growers In general commercial collar growers sell you an entire collar plant, typically...

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