The following table discloses revenue by primary geographical market, customer type, and customer credit risk profile (in thousands). The table also includes a reconciliation of the disaggregated revenue to revenue by reportable segment (in thousands).



	Reportable Segments
	Three Months Ended March 31, 2020									Three Months Ended March 31, 2019
	Retail Electricity			Retail Natural Gas			Total Reportable Segments			Retail Electricity			Retail Natural Gas			Total Reportable Segments


Primary markets (a)
New England	$	46,593		$	7,054		$	53,647		$	76,234		$	8,528		$	84,762
Mid-Atlantic	45,842			15,804			61,646			66,811			21,369			88,180
Midwest	14,989			13,607			28,596			22,107			20,489			42,596
Southwest	14,344			8,127			22,471			16,940			7,676			24,616
	$	121,768		$	44,592		$	166,360		$	182,092		$	58,062		$	240,154

Customer type
Commercial	$	40,015		$	15,517		$	55,532		$	67,235		$	19,867		$	87,102
Residential	93,228			33,363			126,591			124,768			41,095			165,863
Unbilled revenue (b)	(11,475		)	(4,288		)	(15,763		)	(9,911		)	(2,900		)	(12,811		)
	$	121,768		$	44,592		$	166,360		$	182,092		$	58,062		$	240,154

Customer credit risk
POR	$	84,913		$	23,037		$	107,950		$	128,937		$	28,979		$	157,916
Non-POR	36,855			21,555			58,410			53,155			29,083			82,238
	$	121,768		$	44,592		$	166,360		$	182,092		$	58,062		$	240,154

(a) The primary markets include the following states:


•	New England - Connecticut, Maine, Massachusetts, New Hampshire;


•	Mid-Atlantic - Delaware, Maryland (including the District of Colombia), New Jersey, New York and Pennsylvania;


•	Midwest - Illinois, Indiana, Michigan and Ohio; and


•	Southwest - Arizona, California, Colorado, Florida, Nevada, and Texas.

(b) Unbilled revenue is recorded in total until it is actualized, at which time it is categorized between commercial and residential customers.