Blooming Idiot Boxes

Another green technology scam with no increased benefits.

The Institute for Energy Research writes:

In 2010, fuel cell manufacturer Bloom Energy unveiled its “Bloom Energy Server.” The unveiling and subsequent press attention claimed that these “Bloom Boxes” were green, efficient and represented the future of energy production. But three years later it appears that Bloom Energy’s success can be attributed to savvy PR and government subsidies—not a superior product. After reviewing Bloom’s products in the real world, it appears that not only are Bloom Boxes functionally the same as natural gas power plants, but they are less efficient.

It Started with a Fawning Media

Bloom Energy generated buzz in 2010 after 60 Minutes correspondent Leslie Stahl became the first journalist to tour the Sunnyvale, California headquarters and look inside the top-secret “Bloom Box”. Stahl’s piece, however, was much closer to advertising than journalism. For example, Stahl starts, “In the world of energy, the Holy Grail is a power source that’s inexpensive and clean, with no emissions. Well over 100 start-ups in Silicon Valley are working on it, and one of them, Bloom Energy, is about to make public its invention.”

Bloom’s good PR extends beyond Apple. A number of well-known companies have purchased Bloom Boxes, including Adobe, FedEx, Staples, Google, Coca-Cola, and Wal-Mart. One reason these companies signed up is because of government subsidies. As 60 Minutes explains, “In California 20 percent of the cost is subsidized by the state, and there’s a 30 percent federal tax break because it’s a ‘green’ technology. In other words: the price is cut in half.” Getting the price cut in half definitely makes expensive energy technology look appealing, especially if it has the veneer of being “green.”

While Bloom Boxes aren’t green (unless you consider natural power plants green), the most important question is whether Bloom Boxes are efficient. According to 60 Minutes, Google has some Bloom Boxes that “use natural gas, but half as much as would be required for a traditional power plant.” The claim that Bloom Boxes are efficient does not stand up to scrutiny.

Is Bloom Green: Unboxing Bloom Energy’s Costs

A couple of engineers in California decided to compare Bloom’s energy efficiency with a cogeneration facility running on natural gas. These two engineers, Bob Spitzka and James Hall, have worked on the feasibility and design of nearly 100 cogeneration facilities and wanted to see how Bloom compared in terms of efficiency. After all, as 60 Minutes noted above, Bloom Boxes received subsidies because they are perceived as “green.”

Spitzka and Hall find that conventional cogeneration, which also produces usable heat, can achieve better CO2 reductions than Bloom Energy fuel cells when operating on the same fuel. The following chart compares a cogeneration unit to a Bloom Energy unit, each rated at 100 kw and operating 90 percent of the year:

cogen

As the chart shows, a conventional cogeneration unit would cost $500,000 less annually than a Bloom Energy unit. Moreover, the Bloom unit actually increases CO2 emissions by 98.2 tons per year, despite Bloom Energy’s claims that Bloom Boxes are better for the environment. Moreover, cogeneration is nothing new; the technology has existed for more than a century, yet these old units cost less and are more efficient than Bloom Energy’s Bloom Box.

more here: http://www.instituteforenergyresearch.org/2013/06/18/the-bloom-is-off-bloom-energy/

0 0 votes
Article Rating

Discover more from Watts Up With That?

Subscribe to get the latest posts sent to your email.

57 Comments
Inline Feedbacks
View all comments
June 25, 2013 2:22 pm

Dave Rutledge:

However, the Bloom box electricity comes day and night, and at night we generate too much power and have to sell it to the city at a loss at the low night-time rate.

You can’t throttle the Bloom units down?
Also, what are the capacities of the Caltech cogen and Bloom plants? 100kW is a small power plant; I’m sure there are many buildings on your campus which use more than that.

June 25, 2013 2:50 pm

Hi Alan,
The cogen is 12.5MW and runs 24/7 except for maintenance. There are twenty 100kW Bloom boxes (I was mistaken earlier). They also run 24/7 except for maintenance. Here is the description
http://www.sustainability.caltech.edu/documents/94-energy_portfolio.pdf
Net, we generate 91% of our electricity (this number and the costs in the earlier comment are for FY2012), buying extra from the city during the day and selling surplus to the city at night.

mike g
June 25, 2013 5:19 pm

Barry Hoffman says:
June 25, 2013 at 6:02 am
The Bloom Box is generating on site where as the Co-gen plant is generating its electricity remotely. Where is the transmission line loss (resistance = heat loss) accounted for with the Co-gen calculation?
There are transmission costs to the Blooming Idiot Boxes to consider, as well. It costs something to move natural gas through a pipeline.

Doug Badgero
June 25, 2013 7:18 pm

Thermal efficiency is just less than 52% for a bloom box. This is about the same as a modern nat gas cogen plant, maybe just a bit less than the most modern cogen plants. And use of waste heat is not an option. The second law ALWAYS gets in the way.

Chris G
June 25, 2013 10:25 pm

For the people that think absorption chillers are cost effective with waste heat I suggest that you check efficiencies. Unless you are throwing waste heat out (which is not available on the bloom box) electric chillers are far and away a better bet. P.S. for the people who have not taken thermo, you must add in all parasitic losses like cooling towers for the heat rejection, pumps for the heat exchangers and so forth. I have done a couple of experiments with 30KWe turbines and single effect absorbers: net effect 42% NET efficiency. Not good.

Grey Lensman
June 26, 2013 3:08 am

Chris G, Suggest you look what is available on the market. Why chuck waste heat out. Air conditioning, water heating and space heating are the three biggest users of electricity. Use it wisely, save money.
You will be surprised that they dont have cooling towers, etc.

oeman50
June 26, 2013 9:56 am

I saw the original 60 Minutes airing about the Bloom Box. When they said it was using natural gas, I knew right then it had to be emitting CO2 and water. I listened very carefully for any claims that it did not emit CO2 and heard them skirt around the issue but they did not make that claim. I agree, this is no “greener” than a combustion turbine combined cycle unit. Those units, that use “waste heat” to generate steam and make electricity, no cogeneration or CHP, have efficiencies approaching 60% on the most advanced models, better than fuel cells. But you may want to note that in Connecticut, fuel cells are considered “renewable” by law.
And waste heat. Every solid oxide fuel cell I know of runs at a rather high temperature so the exhaust should be hot enough to recover the heat. It just appears they have not elected to do so, it does have more capital cost. If you are using many small generating units, the costs go up, it is more economical to collect the heat from a single source. But, you can use the exhaust from a fuel cell to generate steam for cogeneration or for making electricity from an organic Rankine cycle, the first is in actual use and the second type is under construction.

Verified by MonsterInsights