Tag Archives: re

Wind is cheaper than coal? — Fact checking this statement

The other day I heard in passing, “wind is now cheaper than coal.” If true, this symbolizes the holy grail of renewable energy. It would mean that a turning point for not only cleaner energy, but global warming, climate change, pollution, foreign oil dependence, and more.

To fact check this, I pulled up the top 20 results from Google and narrowed them down to the below articles (most were duplicates pointing at these 5 stories).

Not at all definitive but it does give you an idea of the state of the industry. Just keep in mind that the prices may or may not include subsidies or tax breaks, which can drastically change the costs quoted below.


Jul 2012 - In India, wind is cheaper than coal in Indi (w/out subsidies) (Bloomberg Business)

The cost of wind power has dropped below the price of coal-fired energy in parts of India for the first time as improved turbine technology (from GE) and rising fossil-fuel prices boost its competitiveness, Greenko Group Plc (GKO) said.


Mar 2012 – In Michigan wind is cheaper than coal (American Wind Energy Assoc.)

The Michigan Public Service Commission (PSC) recently issued a report that finds that electricity generated from renewable energy sources, at an average cost of $91 per megawatt-hour (9.1 cents/kilowatt-hour), is almost one-third cheaper than the cost of electricity from a new coal-fired power plant ($133 per MWh, or 13.3 cents/kWh).

Further, the report notes, “The actual cost of renewable energy contracts submitted to the Commission to date shows a downward pricing trend.


Feb 2012 – In California, prices doubled in the first decade of 21st century, since 2011 are dropping to parity with natural gas (SF Gate)

The price of renewable power contracts signed by California utilities more than doubled from 2003 through 2011 but has now started to plunge…

The cost of buying electricity from a new natural gas power plant…(in 2011) ranged from 7.5 cents per kilowatt hour to 12 cents per kilowatt hour, depending on the length of the contract…The cost of renewable power from wind and solar facilities averaged between 8 and 9 cents per kilowatt hour.


Nov 2011 – Investigation of Bill Clinton’s claim that wind/solar are cheaper than nuclear (Politifact)

  • Conventional Coal – 94.8 (dollars/MWh)
  • Wind – Onshore – 97
  • Nuclear – 113.9
  • Solar – Photovoltaic – 210.7
  • Wind – Offshore – 243.2
  • Solar – Thermal – 311.8

Source: DOE’s Energy Information Administration


Nov 2011 – Google retires its initiative RE

It’s not clear here if Google feels this is already won and moving on, or if they have had enough and are quitting. One thing is certain, Google invested nearly a billion dollars ($850 million) in renewable energy last year.

This initiative was developed as an effort to drive down the cost of renewable energy, with an RE<C engineering team focused on researching improvements to solar power technology. At this point, other institutions are better positioned than Google to take this research to the next level. So we’ve published our results to help others in the field continue to advance the state of power tower technology, and we’ve closed our efforts.


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Most of the translation on the planet is now done by Google Translate

“In a given day we translate roughly as much text as you’d find in 1 million books. To put it another way: what all the professional human translators in the world produce in a year, our system translates in roughly a single day. By this estimate, most of the translation on the planet is now done by Google Translate.”

Pulled from Breaking Down the Language Barrier via the Google Translate Blog:

The rise of the web has brought the world’s collective knowledge to the fingertips of more than two billion people. But what happens if it’s in Hindi or Afrikaans or Icelandic, and you speak only English—or vice versa?

In 2001, Google started providing a service that could translate eight languages to and from English. It used what was then state-of-the-art commercial machine translation (MT), but the translation quality wasn’t very good, and it didn’t improve much in those first few years. In 2003, a few Google engineers decided to ramp up the translation quality and tackle more languages. That’s when I got involved. I was working as a researcher on DARPA projects looking at a new approach to machine translation—learning from data—which held the promise of much better translation quality. I got a phone call from those Googlers who convinced me (I was skeptical!) that this data-driven approach might work.

I joined Google, and we started to retool our translation system toward competing in the NIST Machine Translation Evaluation, a “bake-off” among research institutions and companies to build better machine translation. Google’s massive computing infrastructure and ability to crunch vast sets of web data gave us strong results. This was a major turning point: it underscored how effective the data-driven approach could be.

But at that time our system was too slow to run as a practical service—it took us 40 hours and 1,000 machines to translate 1,000 sentences. So we focused on speed, and a year later our system could translate a sentence in under a second, and with better quality. In early 2006, we rolled out our first languages: Chinese, then Arabic.

We announced our statistical MT approach on April 28, 2006, and in the six years since then we’ve focused primarily on core translation quality and language coverage. We can now translate among any of 64 different languages, including many with a small web presence, such as Bengali, Basque, Swahili, Yiddish, even Esperanto.

Today we have more than 200 million monthly active users on translate.google.com (and even more in other places where you can use Translate, such as Chrome, mobile apps, YouTube, etc.). People also seem eager to access Google Translate on the go (the language barrier is never more acute than when you’re traveling)—we’ve seen our mobile traffic more than quadruple year over year. And our users are truly global: more than 92 percent of our traffic comes from outside the United States.


by Franz Och

Distinguished Research Scientist, Google


// Thx to - The Next Web