DC Public Service Commission: Gas Customer Choice

Quarterly 1999 - Present Market Shares

District of Columbia, Maryland, and Virginia Customer Choice Programs - Washington Gas Residential Customers

	Market Share
	Customers						Usage
	District of Columbia		Maryland		Virginia		District of Columbia		Maryland		Virginia
Quarters Ended	% of Customers Choosing Alternative Supplier	% of Customers on Sales Service	% of Customers Choosing Alternative Supplier	% of Customers on Sales Service	% of Customers Choosing Alternative Supplier a/	% of Customers on Sales Service	% Alternative Supplier	% Sales Service	% Alternative Supplier	% Sales Service	% Alternative Supplier	% Sales Service
Mar-99	6%	94%	11%	89%	4%	96%	8%	92%	11%	89%	5%	95%
Jun-99	6%	94%	13%	87%	6%	94%	8%	92%	13%	87%	6%	94%
Sep-99	6%	94%	19%	81%	5%	95%	8%	92%	17%	83%	6%	94%
Dec-99	8%	92%	21%	79%	10%	90%	10%	90%	20%	80%	11%	89%
Mar-00	8%	92%	25%	75%	12%	88%	11%	89%	22%	78%	12%	88%
Jun-00	11%	89%	26%	74%	12%	88%	12%	88%	23%	77%	13%	87%
Sep-00	13%	87%	26%	74%	12%	88%	14%	86%	23%	77%	13%	87%
Dec-00	14%	86%	25%	75%	11%	89%	14%	86%	22%	78%	12%	88%
Mar-01	12%	88%	22%	78%	10%	90%	13%	87%	19%	81%	10%	90%
Jun-01	8%	92%	21%	79%	10%	90%	NA	NA	NA	NA	NA	NA
Sep-01	9%	91%	25%	75%	10%	90%	NA	NA	NA	NA	NA	NA
Dec-01	12%	88%	25%	75%	11%	89%	14%	86%	NA	NA	NA	NA
Mar-02	12%	88%	25%	75%	17%	83%	15%	85%	NA	NA	NA	NA
Jun-02	14%	86%	25%	75%	20%	80%	14%	86%	NA	NA	NA	NA
Sep-02	16%	84%	25%	75%	22%	78%	16%	84%	NA	NA	NA	NA
Dec-02	19%	81%	26%	74%	21%	79%	22%	78%	NA	NA	NA	NA
Mar-03	20%	80%	28%	72%	21%	79%	23%	77%	NA	NA	NA	NA
Jun-03	18%	82%	28%	72%	20%	80%	24%	76%	NA	NA	NA	NA
Sep-03	17%	83%	24%	76%	20%	80%	20%	24%	NA	NA	NA	NA
Dec-03	16%	84%	22%	78%	18%	82%	20%	80%	NA	NA	NA	NA
Mar-04	16%	84%	22%	78%	17%	83%	18%	82%	NA	NA	NA	NA
Jun-04	14%	86%	23%	77%	19%	81%	17%	83%	NA	NA	NA	NA
Sep-04	13%	87%	22%	78%	19%	81%	15%	85%	NA	NA	NA	NA
Dec-04	12%	88%	20%	80%	15%	85%	16%	84%	NA	NA	NA	NA
Mar-05	11%	89%	20%	80%	14%	86%	14%	86%	NA	NA	NA	NA
Jun-05	9%	91%	18%	82%	14%	86%	11%	89%	NA	NA	NA	NA
Sep-05	8%	92%	17%	83%	13%	87%	10%	90%	NA	NA	NA	NA
Dec-05	9%	91%	17%	83%	13%	87%	12%	88%	NA	NA	NA	NA
Mar-06	10%	90%	16%	84%	12%	88%	12%	88%	NA	NA	NA	NA
Jun-06	9%	91%	16%	84%	12%	88%	12%	88%	NA	NA	NA	NA
Sep-06	9%	91%	16%	84%	12%	88%	12%	88%	NA	NA	NA	NA
Dec-06	9%	91%	15%	85%	12%	88%	12%	88%	NA	NA	NA	NA
Mar-07	9%	91%	15%	85%	11%	89%	11%	89%	NA	NA	NA	NA
Jun-07	9%	91%	15%	85%	11%	89%	11%	89%	NA	NA	NA	NA
Sep-07	9%	91%	15%	85%	11%	89%	11%	89%	NA	NA	NA	NA
Dec-07	9%	91%	15%	85%	11%	89%	11%	89%	NA	NA	NA	NA
Mar-08	9%	91%	15%	85%	11%	89%	11%	89%	NA	NA	NA	NA

District of Columbia, Maryland, and Virginia Customer Choice Programs - Washington Gas Commercial Customers

	Market Share
	Customers						Usage
	District of Columbia		Maryland		virginia		District of Columbia		Maryland		virginia
Quarters Ended	% of Customers Choosing Alternative Supplier	% of Customers on Sales Service	% of Customers Choosing Alternative Supplier	% of Customers on Sales Service	% of Customers Choosing Alternative Supplier a/	% of Customers on Sales Service	% Alternative Supplier	% Sales Service	% Alternative Supplier	% Sales Service	% Alternative Supplier	% Sales Service
Mar-99	1%	99%	37%	63%	100%	0%	7%	93%	41%	59%	29%	71%
Jun-99	1%	99%	42%	58%	100%	0%	7%	93%	43%	57%	30%	70%
Sep-99	1%	99%	42%	58%	100%	0%	9%	91%	42%	58%	29%	71%
Dec-99	17%	83%	40%	60%	62%	38%	22%	78%	42%	58%	29%	71%
Mar-00	22%	78%	41%	59%	93%	7%	26%	74%	41%	59%	35%	65%
Jun-00	28%	72%	41%	59%	92%	8%	34%	66%	41%	59%	34%	66%
Sep-00	33%	67%	41%	59%	91%	9%	35%	65%	41%	59%	34%	66%
Dec-00	32%	68%	41%	59%	88%	12%	34%	66%	41%	59%	33%	67%
Mar-01	30%	70%	39%	61%	54%	46%	33%	67%	39%	61%	23%	77%
Jun-01	30%	70%	39%	61%	22%	78%	40%	60%	NA	NA	NA	NA
Sep-01	30%	70%	39%	61%	22%	78%	47%	53%	NA	NA	NA	NA
Dec-01	32%	68%	38%	62%	28%	72%	49%	51%	NA	NA	NA	NA
Mar-02	33%	67%	41%	59%	29%	71%	51%	49%	NA	NA	NA	NA
Jun-02	34%	66%	44%	56%	31%	69%	50%	50%	NA	NA	NA	NA
Sep-02	35%	65%	44%	56%	33%	67%	49%	51%	NA	NA	NA	NA
Dec-02	33%	67%	45%	55%	33%	67%	52%	48%	NA	NA	NA	NA
Mar-03	33%	67%	46%	54%	33%	67%	33%	67%	NA	NA	NA	NA
Jun-03	31%	69%	45%	55%	33%	67%	48%	52%	NA	NA	NA	NA
Sep-03	31%	69%	45%	55%	33%	67%	50%	50%	NA	NA	NA	NA
Dec-03	33%	67%	45%	55%	33%	67%	41%	59%	NA	NA	NA	NA
Mar-04	33%	67%	42%	58%	32%	68%	47%	53%	NA	NA	NA	NA
Jun-04	32%	68%	42%	58%	32%	68%	49%	51%	NA	NA	NA	NA
Sep-04	31%	69%	41%	59%	31%	69%	48%	52%	NA	NA	NA	NA
Dec-04	33%	67%	45%	55%	33%	67%	48%	52%	NA	NA	NA	NA
Mar-05	31%	69%	40%	60%	28%	72%	48%	52%	NA	NA	NA	NA
Jun-05	31%	69%	39%	61%	27%	73%	53%	47%	NA	NA	NA	NA
Sep-05	30%	70%	38%	62%	27%	73%	54%	46%	NA	NA	NA	NA
Dec-05	32%	68%	38%	62%	27%	73%	51%	49%	NA	NA	NA	NA
Mar-06	34%	66%	40%	60%	29%	71%	53%	47%	NA	NA	NA	NA
Jun-06	34%	66%	41%	59%	29%	71%	54%	46%	NA	NA	NA	NA
Sep-06	33%	67%	41%	59%	29%	71%	55%	45%	NA	NA	NA	NA
Dec-06	34%	66%	41%	59%	30%	70%	55%	45%	NA	NA	NA	NA
Mar-07	35%	65%	41%	59%	30%	70%	56%	44%	NA	NA	NA	NA
Jun-07	34%	66%	41%	59%	30%	70%	56%	44%	NA	NA	NA	NA
Sep-07	34%	66%	40%	60%	30%	70%	57%	43%	NA	NA	NA	NA
Dec-07	34%	66%	40%	60%	30%	70%	57%	43%	NA	NA	NA	NA
Mar-08	34%	66%	40%	60%	30%	70%	58%	42%	NA	NA	NA	NA
NA: Not Available
Source: Washington Gas Light Company