Commitments and Contingencies

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

12. Commitments and Contingencies

In September 2011, the Company signed a letter of credit with Silicon Valley Bank in the amount of $525,000. The standby letter of credit is required by an agreement negotiated between Air Products and Chemicals, Inc. (Air Products) and the Company to supply hydrogen infrastructure and hydrogen to Central Grocers at their distribution center.  There are no collateral requirements associated with this letter of credit.

The Equipment Sale Agreement Addendum No. 1 between Ballard and the Company was executed on June 30, 2011. This addendum relates to a committed purchase by the Company of a total of 3,250 Ballard fuel cell stacks between the dates of July 1, 2011 and December 31, 2012. The amount of this commitment was approximately $9.4 million.  As of June 30, 2012, the Company had purchased 1,884 stacks, and has a remaining commitment of approximately $3.7 million.  In conjunction with this agreement, the Company paid a one-time non-recurring engineering fee of $450,000 to Ballard to be used at Ballard’s sole discretion for the purposes of product development, cost reduction and production implementation.  This fee is being amortized to research and development expense over a period of eighteen months.

Concentrations of credit risk with respect to receivables exist due to the limited number of select customers that the Company has initial commercial sales arrangements with and with government agencies. To mitigate credit risk, the Company performs appropriate evaluation of a prospective customer’s financial condition.

At June 30, 2012, four customers comprise approximately 82.6% of the total accounts receivable balance, with each customer individually representing 46.9%, 25.3%, 5.8%, and 4.6% of total accounts receivable, respectively. At December 31, 2011, five customers comprise approximately 83.0% of the total accounts receivable balance, with each customer individually representing 27.0%, 17.3%, 16.4%, 12.1%, and 10.2% of total accounts receivable, respectively.

For the six months ended June 30, 2012, contracts with three customers comprise approximately 63.2% of total consolidated revenues, with each customer representing 25.3%, 24.9%, and 13.0%, respectively.  For the six months ended June 30, 2011, contracts with three customers and two federal government agencies comprised approximately 72.6% of total consolidated revenues, with each customer representing 28.3%, 12.5%, 11.6%, 10.1%, and 10.1%, respectively.

The product and service revenue contracts we entered into generally provide a one to two-year product warranty to customers from date of installation. We currently estimate the costs of satisfying warranty claims based on an analysis of past experience and provide for future claims in the period the revenue is recognized. 

The following table summarizes product warranty activity recorded during the six months ended June 30, 2012 and 2011:

	June 30, 2012		June 30, 2011
Beginning balance - January 1	$	1,210,919	$	862,480
Additions for current year deliveries	346,970		445,570
Reductions for payments made	(537,879)		(336,950)
Ending balance - June 30	$	1,020,010	$	971,100