3. INVESTMENT IN SALES-TYPE LEASES, NET

Under sales-type leases, Xi’an TCH leases the following systems: (i) BMPG systems to Pucheng Phase I and II (15 and 11 year terms, respectively); (ii) BMPG systems to Shenqiu Phase I (11 year term); (iii) Shenqiu Phase II (9.5 year term); and (iv) WGPG systems to Yida (15 year term). In addition, as of June 30, 2015, Erdos TCH leased power and steam generating systems from waste heat from metal refining to Erdos (five systems) for a term of twenty years. The components of the net investment in sales-type leases as of June 30, 2015 and December 31, 2014 are as follows:

	2015		2014
Total future minimum lease payments receivable	$	428,978,016	$	583,820,886
Less: executory cost		(102,370,458)		(134,771,919)
Less: unearned interest income		(175,005,482)		(268,028,368)
Investment in sales-type leases, net		151,602,076		181,020,599
Current portion		6,665,583		6,561,984
Noncurrent portion	$	144,936,493	$	174,458,615

As of June 30, 2015, the future minimum rentals to be received on non-cancelable sales-type leases by years are as follows:

2015	$	35,772,703
2016		34,545,930
2017		34,545,930
2018		34,545,930
2019		34,545,930
Thereafter		255,021,593
Total	$	428,978,016