Conversation so far:
where was the first silicon photovoltaic cell developed
Photovoltaic technology is born in the United States in 1954 when Daryl Chapin, Calvin Fuller, and Gerald Pearson develop the silicon photovoltaic cell at Bell Lab.
what was the cost per watt of photovoltaic cells back in the 50s
A one-watt cell cost almost $300 per watt in 1956 while a commercial power plant cost 50 cents a watt to build at that time.

Question: did the prices come down
Self-contained rewrite: did the prices of the photovoltaic cell come down