The early development of solar technologies starting in the 1860s was driven by an expectation that coal would soon become scarce, such as experiments by . installed the world's first rooftop photovoltaic solar array, using 1%-efficient cells, on a New York City roof in 1884. However, development of solar technologies stagnated in the early 20th centu.
[pdf] Solar Turbines Incorporated, a wholly owned subsidiary of , designs and manufactures industrial for onshore and offshore electrical power generation, for marine propulsion and for producing, processing and transporting natural gas and oil. The company traces its history to the 1927 founding of the Prudden-San Diego Airplane Company, which became the Solar Aircraft Company in 1929. Through the , th.
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