The ABC Company purchased a solar powered electrical generator on March 9, 2005 for $1.5 million. At that time, it was estimated that the generator would have a useful life of 20 years and a salvage value of $50,000. Over its life span, it was estimated that the generator would produce 30M gigawatts of electricity.

In the 2005 year, the generator produced 800,000 gigawatts;

in the 2006 year: 1.2M gigawatts,

and finally in the 2007 year: 1.0M gigawatts

(i.e. 500,000 gigawatts up to July 17).

On July 17, 2007, during a management meeting, the senior engineer notified the Controller that there were actually 35 years of useful life remaining on the generator (or 35M gigawatts of electricity) now that a $300,000 retrofit had been completed. In addition, the engineer stated that the generator would likely have a salvage value of only $10,000. After further research, the Controller agreed with the engineer's stated information and realized that a 'change of accounting estimate', in respect of the amortization expense, would be required. ABC Company has a calendar year end. Use nearest whole month metho

Find out Capital Cost, Accumulated Amortization, Net Book Value, and Amortization Expense for 2005, 2006, and 2007 using the following methods:

a) Straight line

b) Units of production

c) Double declining balance