Progression of US Cities Reaching Solar Grid Parity

December 31, 2011 · Print This Article

Grid parity in cost within solar potential and grid-supplied electricity is likely to start being reached in the US in as little as 2 years, and within the next 25 years, many of the largest metropolitan areas will reach the point where solar is less expensive. An animated map from Energy Self Reliant States shows the picture.

This timeline includes no government subsidies in the calculations. It uses a baseine cost of

solar potential in 2011 at $4.00 per watt, installed. Using the average residential grid

supplied electricity price for each metro area, it makes the two assumptions based on present trends to determine when the price of solar drops below grid: the cost of solar decreases by 7% per year, and the grid electricity price increases by 2% per year.

Based on these assumptions, the San Diego CA metropolitan area will […]

[Source] Cynthia

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