12/19/2023 0 Comments Bloom energyAt the time, after factoring in tax incentives which effectively halved the initial cost, eBay expected a three-year payback period based on the then $0.14/kWh cost of commercial electricity in California. Īs of 2010, 15% of the power consumed by eBay was generated via the use of Bloom Energy Servers. There are 123 Bloom boxes producing at 16 cents/kWh for Delmarva Power in a 21-year deal going from 2012 to 2033. In 2010, Bloom Energy claimed to be developing power purchase agreements to sell electricity produced by the boxes, rather than selling the boxes themselves, in order to address customers' fears about box maintenance, reliability, and servicing costs. Twenty percent of the cost savings depend upon avoiding transfer losses that result from energy grid use. On 24 February 2010, Sridhar claimed that his devices were making electricity for $0.08–.10/kWh using natural gas, cheaper than electricity prices in some parts of the United States, such as California. 'We’re able to tell customers, ‘You don’t have to put any money up front, you pay only for the electrons you use and it’s good for your pocketbook and good for planet,’ ' said." Usage Under the Bloom Electrons service, customers sign 10-year contracts to purchase the electricity generated by Bloom Energy Servers while the company retains ownership of the fuel cells and responsibility for their maintenance. unveiled a service to allow customers to buy the electricity generated by its fuel cells without incurring the capital costs of purchasing the six-figure devices. Īccording to The New York Times (Green Blog), in early 2011 ". Bloom estimated the size of a home-sized server at 1 kW, although others recommended 5 kW. In 2010, the company announced plans for a smaller, home sized Bloom server priced under $3,000. The current cost of each hand-made 100 kW Bloom Energy Server is $700,000–800,000. In competing lower temperature fuel cells, platinum is required at the cathode. To save money, the Bloom Energy Server uses inexpensive metal alloy plates for electric conductance between the two ceramic fast ion conductor plates. Most of the 5,000 kilograms used annually is sourced from Soviet era stockpiles. Current annual worldwide production of scandium is less than 2,000 kilograms. Scandia is scandium oxide ( Scģ) which is a transition metal oxide that costs between US$1,400 and US$2,000 per kilogram in 99.9% pure form. ScSZ has a higher conductivity than YSZ at lower temperatures, which provides greater efficiency and higher reliability when used as an electrolyte. US patent application 20080261099, assigned to Bloom Energy Corporation, says that the "electrolyte includes yttria stabilized zirconia and a scandia-stabilized zirconia, such as a scandia ceria stabilized zirconia". Wired reported that the secret ingredient may be yttria-stabilized zirconia based upon US patent 7572530 that was granted to Bloom in 2009 this material is also one of the most common electrolyte materials in the field. Įach plate is coated with a green nickel oxide-based ink on one side, forming the anode, and another black (probably Lanthanum strontium manganite) ink on the cathode side. The Bloom Energy Server uses thin white ceramic plates of size 100 × 100 mm. In 2011, Bloom stated that two hundred servers had been deployed in California for corporations including Google, Yahoo, and Wal-Mart. The cell's technology continues to rely on non-renewable sources of energy to produce electricity, and because it is not a hydrogen fuel cell, it still produces carbon dioxide (an important greenhouse gas) during operation. The fuel cells have an operational life expectancy of around 10 years based on predictions on fuel costs, the " break even" point for those who purchase the device is around 8 years. According to the company, a single cell (one 100 mm × 100 mm plate consisting of three ceramic layers) generates 25 watts. It withstands temperatures of up to 1,800 ☏ (980 ☌). The Bloom Energy Server or Bloom Box is a solid oxide fuel cell (SOFC) power generator made by Bloom Energy, of Sunnyvale, California, that takes a variety of input fuels, including liquid or gaseous hydrocarbons produced from biological sources, to produce electricity at or near the site where it will be used. A deployment of Bloom Energy Servers outside eBay headquarters
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