The SolarFarm powerplant has both fixed and variable costs. As the plant expands production, it first has constant returns to scale, and then diminishing returns to scale. (a) Draw a large graph showing (only) the firm’s marginal costs and average total costs in a suitably labelled graph. Show on the graph where the firm’s technology changes from constant-returns to diminishing-returns. SolarFarm is a monopolist with a downward sloping demand curve. Add to your graph a demand and marginal revenue curve. Assume that the demand curve intercepts the average cost curve at its minimum point. Show the quantity and price of electricity in this market.

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