Home > Participate > Settlements > Global Adjustment - Archive

Global Adjustment - Archive

The Global Adjustment (GA) is the difference between the total payments made to certain contracted or regulated generators and any offsetting market revenues, as well as the costs of conservation and demand response programs.

The following tables summarize the GA since its inception from January 2005 until December 2012. Prior to January 1, 2011 the Global Adjustment was called Provincial Benefit on bills for customers served by local distribution companies (LDCs).

Available GA Tables:

Global Adjustment Values - 2005-2013

Estimated Global Adjustment - Effective January 1, 2011

Posted Estimated Global Adjustment ($/MWh) for 2005-2010

Fixed Global Adjustment ($/MWh) for Distributor Billing for 2005-2010*


Global Adjustment Values - 2005-2013

​2013 Jan​ ​Feb ​Mar ​Apr ​May ​Jun ​Jul ​Aug ​Sep ​Oct ​Nov ​Dec
GA-OEFC-NUG (M$)

​100.6

93.2​

112.7​

90.1​

90.7​

90.5​

79.4​

89.2​

86.1​

99.1​

112.1​

88.9​

​GA-OPG (M$)

​127.7

​106.4

​111.8

​136.3

​155.1

​161.1

​139.1

180.1​

163.2​

157​

197.2​

117.9​

​GA-OPA (M$)

​380.2

​328.1

​330.3

​388.4

​411.4

​473

​391.1

​430.5

​408.1

​378.1

​537.7

​384.9

Total GA (M$)

​608.5

527.7​

554.8​

614.8​

657.2​

724.6​

609.6​

699.8​

657.4​

634.2​

847​

591.7​

GA ($/MWh)​49.9948.14​49.26​58.59​67.59​70.43​50.89​62.45​66.55​63.12​78.55​50.68​
Class A Total (M$)

​62.8

54.5​

​57.3

63.6​

67.9​

74.9​

63.4​

72.8​

68.4​

66​

88.1​

61.6​

Class B Total (M$)

545.7​

473.2​

497.5​

551.2​

589.3​

649.7​

546.1​

627​

589​

568.2​

758.9​

530.1​

2012

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA-OEFC-NUG (M$)

105.9

103.4

119.4

91.3

92.3

82.0

61.9

73.1

78.0

78.0

108.9

96.9

GA-OPG (M$)

152.0

160.2

202.4

167.5

170.9

176.1

114.1

142.2

131.5

152.5

132.6

146.3

GA-OPA (M$)

254.4

286.4

344.7

335.9

315.0

326.7

245.7

269.5

269.4

315.1

333.7

219.8

Total GA (M$)

512.3

550.0

666.5

594.7

578.2

584.8

421.7

484.8

478.9

545.6

575.2

463.0

GA ($/MWh)

42.46

50.62

62.34

60.72

56.5

52.55

33.59

41.78

47.62

53.81

54.26

40.64

Class A Total (M$)

51.0

54.8

66.4

59.2

57.6

58.2

42.4

49.0

48.4

55.3

59.2

47.8

Class B Total (M$)

461.3

495.2

600.1

535.5

520.6

526.6

379.2

435.9

430.5

490.3

516.0

415.2

2011

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA-OEFC-NUG (M$)

110.1

94.2

101.2

82.2

82.1

102.0

87.0

64.5

50.5

88.9

103.6

116.6

GA-OPG (M$)

118.6

94.3

96.7

114.9

147.0

92.6

80.4

112.0

105.0

118.9

119.5

147.0

GA-OPA (M$)

240.4

205.0

229.8

243.3

269.1

228.5

224.3

249.6

235.9

249.1

227.9

276.9

Total GA (M$)

469.1

393.5

427.7

440.4

498.2

423.1

391.7

426.1

391.4

456.9

451.0

540.5

GA ($/MWh)

37.01

35.18

36.83

43.89

50.05

40.48

31.3

36.57

38.49

45.4

43.46

47.15

Class A Total (M$)

51.1

42.9

46.6

47.9

54.2

46.0

39.0

42.4

38.9

45.5

44.9

53.8

Class B Total (M$)

418.0

350.6

381.1

392.5

444.0

377.1

352.7

383.7

352.5

411.4

406.1

486.7

2010

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA-OEFC-NUG (M$)

96.8

108.9

111.2

97.7

77.1

49.7

47.4

31.0

43.4

99.2

92.4

104.8

GA-OPG (M$)

77.5

71.6

124.1

89.4

41.4

50.8

-5.3

27.8

97.8

108.9

101.5

103.9

GA-OPA (M$)

178.0

121.7

214.6

183.9

154.7

181.9

56.8

99.0

172.5

236.1

195.5

203.7

Total GA (M$)

352.9

302.2

451.1

371.1

273.2

282.4

98.8

156.8

313.7

443.7

389.4

412.4

GA ($/MWh)

27.00

25.91

39.07

35.60

24.34

24.66

7.50

12.25

28.42

40.34

34.14

32.27

Since Jan 1 GA ($/MWh)

27.00

26.49

30.49

31.63

30.22

29.30

25.82

24.01

24.46

25.95

26.67

27.18

2009

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA-OEFC-NUG (M$)

41.9

40.3

64.0

69.9

76.7

91.9

89.8

106.7

72.4

106.6

106.3

95.0

GA-OPG (M$)

0.1

28.4

136.9

167.3

99.7

167.3

202.3

168.3

189.9

133.5

148.6

109.1

GA-OPA (M$)

-25.5

80.2

134.3

168.8

152.0

146.7

174.8

178.4

168.8

142.6

197.6

187.0

Total GA (M$)

16.5

148.9

335.2

406.1

329.2

405.9

466.9

453.4

431.1

382.7

452.5

391.1

GA ($/MWh)

1.21

12.83

27.79

37.96

31.42

37.74

41.72

37.50

39.80

34.49

40.79

31.05

Since Jan 1 GA ($/MWh)

1.21

6.56

13.43

18.90

21.13

23.72

26.22

27.70

28.97

29.51

30.51

30.56

2008

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA-OEFC-NUG (M$)

56.9

46.5

40.1

43.1

44.8

24.8

26.1

31.1

25.0

47.1

42.4

51.6

GA-OPG (M$)

30.4

-36.5

-64.1

-21.1

45.8

-64.6

-63.7

-7.9

-20.3

1.7

-33.9

43.8

GA-OPA (M$)

30.2

34.1

37.2

43.4

83.5

38.6

79.8

66.8

30.3

44.1

49.8

74.0

Total GA (M$)

117.5

44.1

13.2

65.3

174.1

-1.2

42.2

90.0

34.9

92.9

58.4

169.3

GA ($/MWh)

8.69

3.44

1.02

5.73

15.42

-0.10

3.26

7.26

2.99

8.04

4.98

13.08

Since Jan 1 GA ($/MWh)

8.69

6.14

4.45

4.74

6.69

5.58

5.23

5.49

5.23

4.54

5.45

6.12

2007

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA (M$)

93

-71

-5

56

123

78

81

4

56

41

80

61

GA ($/MWh)

6.81

-5.50

-0.37

4.72

10.40

6.23

6.37

0.30

4.77

3.52

6.50

4.56

Since Jan 1 GA ($/MWh)

6.81

0.81

0.42

1.41

3.08

3.60

4.00

3.52

3.65

3.63

3.89

3.95

2006

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA (M$)

-32

53

31

70

37

35

14

-9

154

125

46

130

GA ($/MWh)

-2.40

4.26

2.36

6.15

3.10

2.85

1.02

-0.66

13.46

10.55

3.79

10.14

Since Jan 1 GA ($/MWh)

-2.40

0.80

1.32

2.41

2.54

2.60

2.35

1.96

3.12

3.83

3.82

4.36

2005

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

GA (M$)

21

35

27

-63

-18

-94

-170

-244

-261

-140

-44

-202

GA ($/MWh)

1.44

2.78

2.01

-5.40

-1.55

-7.06

-12.31

-17.82

-21.37

-11.66

-3.57

-14.82

Since Jan 1 GA ($/MWh)

1.44

2.06

2.05

0.37

0.02

-1.20

-2.89

-4.84

-6.57

-7.05

-6.74

-7.45

Note: Positive amount denotes a charge as per IESO settlement.

Return to Top


Estimated Global Adjustment - Effective January 1, 2011

2012

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

1st Estimate ($/MWh)

42.77

49.06

48.50

74.68

55.29

53.36

51.23

37.77

3.8.30

53.44

47.72

49.36

2nd Estimate (M$)

520.2

548

675.2

586.8

582.2

572.5

599

486.1

460

542.3

588.2

472.7

2nd Estimate ($/MWh)

42.97

50.43

62.13

60.49

58.01

54.22

43.59

28.94

49.49

52.02

55.68

39.46

 2011

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

1st Estimate ($/MWh)

28.84

42.13

37.11

39.30

43.01

47.14

38.71

26.57

44.55

38.62

37.85

47.08

2nd Estimate (M$)

485.3

406.3

438.9

386.0

496.1

422.9

390.3

420.4

387.7

461.2

456.5

541.4

2nd Estimate ($/MWh)

37.74

35.83

35.68

42.99

49.94

40.93

30.75

36.35

39.11

45.59

44.71

45.72

Note: Positive amount denotes a charge to the consumer.

Return to Top


Posted Estimated Global Adjustment ($/MWh) for 2005-2010

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

2010

28.42

26.75

39.82

36.48

25.20

25.75

8.71

13.30

29.36

41.39

35.51

33.27

2009

5.23

12.76

27.64

37.87

31.04

37.73

41.73

32.02

39.69

34.36

40.89

30.99

2008

8.65

3.48

1.22

5.78

15.71

-0.50

3.25

7.22

2.80

7.93

3.93

13.37

2007

6.83

-5.45

-0.38

4.67

10.42

6.57

6.35

0.21

4.90

3.44

6.76

4.56

2006

-2.50

2.00

1.85

6.26

3.10

1.88

1.40

-0.65

13.15

10.07

3.85

10.60

2005

1.40

2.80

2.00

-5.70

-2.10

-6.20

-11.50

-16.00

-20.00

-13.20

-2.80

-19.83

Note: Positive amount denotes a charge as per IESO settlement.

Return to Top


Fixed Global Adjustment ($/MWh) for Distributor Billing for 2005-2010*

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

2010

30.00

32.80

26.30

45.70

34.10

21.20

24.40

5.70

13.60

28.90

39.90

32.30

2009

12.10

5.20

9.50

30.20

39.80

27.90

35.00

43.30

33.60

41.30

33.00

38.00

2008

4.05

9.10

3.60

1.40

5.45

14.40

-0.25

3.50

7.80

2.90

7.80

3.90

2007

10.15

6.95

-5.65

-0.50

4.60

9.75

6.10

6.20

0.25

5.00

3.30

6.30

2006

-14.50

-3.50

2.00

4.00

6.50

3.00

2.00

2.30

-1.00

13.00

9.75

3.85

2005

-0.10

-0.10

-0.10

-0.10

-0.10

-0.10

-6.00

-12.50

-17.00

-20.00

-15.50

-2.50

*Previously, the government set the preliminary daily GA rate on a monthly basis.

Note: Positive amount denotes a charge to the consumer.

Return to Top