EPA Names Microsoft Leading Green Energy Purchaser

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EPA Names Microsoft Leading Green Energy Purchaser

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clip_image002For the second consecutive year, the Environmental Protection Agency (EPA) has named Microsoft to its Green Power Partnership Top 50 List—and this year our ranking increased to second on the Top 50 List.

According to the EPA, Microsoft is purchasing nearly 1.9 billion kWh of green power, which is enough energy to meet 80 percent of Microsoft’s electricity use in the U.S. That’s an increase of nearly 70 percent from last year, when Microsoft used 1.1 billion kWh of green energy. Our annual purchase of green power is equivalent to avoiding the carbon dioxide (CO2) emissions of nearly 285,000 passenger vehicles per year or the CO2 emissions from the electricity use of more than 204,000 average American homes annually. In addition to our spot on the National Top 50 list, we also appear as number 2 on the Top 20 Tech & Telecom list. Our green energy use also qualifies Microsoft for EPA’s Green Power Leadership Club, a distinction given to organizations that have significantly exceeded EPA’s minimum purchase requirements.

While Microsoft has been a consistent purchaser of renewable energy for years, last year’s commitment to carbon neutrality and the creation of an internal carbon fee were both key milestones toward increasing our purchase of renewable energy and carbon offsets. We’re honored to have made the EPA’s list for the second consecutive year and applaud other organizations that are making strides to invest in the nation’s green power market.

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    Have you ever stood on the river coast, watching unbelievable quantities of water flowing near you every second, each minute, in hours, days, months and years? Can you imagine how much power we would need to stop this water movements or how much energy we would need to move such water quantity by machine power?

    It seems to be that huge amounts of energy which causes slowly movements of water masses we could not use – at least not with high efficiency. But, it is a case only if we are using classic and known water turbines which were designed only for high water speeds. Similar effects are to be reached also when using windmill propellers with high efficiency in the air and very poor efficiency when operating deep in to the water stream. After visiting more pages referring TIDAL projects like VERDANT, all VOITH – Siemens and ALSTOM designs, etc., you can easily find out that all of them are carrying the same disadvantages which are causing 12 to 20 times larger investment and operational costs, than it is acceptable and instead of 35 € to 40 € per MWh, are resulting with prices which varies between 500 € to 800 € per MWh of received power.

    This is forcing us to build the dams and artificial lakes what is in the most of cases nearly impossible, very expensive and ecologically always very delicate. So, the only solution was to design completely new type of power turbines, able to extract energy from slow moving water streams. After many years of experiments and development the SP turbines (Stagnation pressure turbines) were designed. On this project I have been working nearly 20 years (http://www.izumi.si).  Up to last year I used to develop only smaller units (SP 1) with Power up to 80 kW, but now days I am working with new designs (SP 2) for which I applied a new Patent and which are 10 times more powerful.

    SP 2 units are incomparably cheaper, technically extremely simple and designed to operate in river or see streams and their life time can be longer than 50 years. The units are placed on the bottom of the river or Sea, they are only 3 m high (instead of 15 to 30 m by known TIDAL units), but their horizontal diameter is very large because SP2 are propelled on radial way and not like other TIDAL turbines which are axially propelled. Therefore, I made calculations and planes for two types of SP 2 units - 22 and 32 meters of diameter – very convenient to be used in larger rivers or as TIDAL units – with life time of more than 50 years:

    SP 22 with 300 kW of Power, costs of 1,5 Million € and price for each MWh of 45 €

    SP 32 with 500 kW of Power, costs of 1,9 Million € and price for each MWh of 40 €

    In deeper water with height of nearly 6 m, capacity of each can be doubled, what means that the price for electricity can be lowered on 25 € to 35 € for each MWh. All is invisible from the coast, works without dams and ecologically is practically ideal.

    Vladimir Markovic      


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