124US Power Generation Assets

In 1996, the U.S. had a total electricity-generating capability of 775,872 megawatts (MW); 91.5% was owned by utilities. The largest portion of utility capability in the country is fueled by coal. The largest plant, Grand Coulee of the Bureau of Reclamation, is a hydroelectric plant on the Columbia River in Washington. The largest utility in the country is the Tennessee Valley Authority (TVA), which provides electricity to seven southeastern states. Although investor-owned utilities account for over three-quarters of U.S. retail electricity sales, both Grand Coulee and TVA are federally owned. The average price of electricity in the U.S. in the year 2000 was 6.9 cents per kilowatt-hour.

The share of U.S. generating capability derived from coal has been steadily falling over the past half-century, and now comprises less than 40%. The nonutility share of capability more than doubled from 1986 to 1996, so that in 1996 nonutilities provided almost 9% of the total. Although the share of utility gas capability increased, the share of net gas-fired generation declined. In 1996, almost one-fifth of electricity was generated at nuclear plants. Figure 1.4 gives a breakout of utility-owned generation by fuel source.

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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