Total storage decreased 39.9 GWh over the last week. South Island controlled storage decreased 6.1 % to 1817 GWh; South Island uncontrolled storage increased 4.6 % to 346 GWh; with Taupo storage increasing 23.1 % to 337 GWh.
Hydro Watch - 8 August 2019, Issue 1,164
By Michael Cawte, August 8, 2019
Total storage decreased 180 GWh over the last week. South Island controlled storage decreased 6.2 % to 1935 GWh;South Island uncontrolled storage decreased 7.3 % to 330 GWh; with Taupo storage decreasing 8.7 % to 274 GWh.
Hydro Watch - 1 August 2019, Issue 1,163
By Michael Cawte, August 1, 2019
Total storage decreased 168.5 GWh over the last week. South Island controlled storage decreased 5.2 % to 2063 GWh; South Island uncontrolled storage decreased 10.5 % to 357 GWh; with Taupo storage decreasing 4 % to 300 GWh.
Hydro Watch - 25 July 2019, Issue 1,162
By Michael Cawte, July 26, 2019
Total storage decreased 66.6 GWh over the last week. South Island controlled storage decreased 1.8 % to 2177 GWh; South Island uncontrolled storage decreased 13 % to 398 GWh; with Taupo storage increasing 11.3 % to 312 GWh.
Hydro Watch - 18 July 2019, Issue 1,161
By Michael Cawte, July 18, 2019
Total storage increased 188.8 GWh over the last week. South Island controlled storage increased 1.1 % to 2216 GWh.South Island uncontrolled storage increased 29.5 % to 458 GWh; with Taupo storage increasing 26.9 % to 281 GWh.
The three most important issues for the 2020s - #3, Extreme Renewables
By Greg Sise, July 16, 2019
This is the third in a series of three posts on what I see as the most important issues for the electricity market for the 2020s and beyond. The first issue was woeful lack of disclosure in the gas market, and the second issue was the ineffectiveness of the electricity hedge market. This third and final issue is on the challenge of moving toward extremely high level
Hydro Watch - 11 July 2019, Issue 1,160
By Ruth Heron, July 12, 2019
Total storage decreased 96.1 GWh over the last week. South Island controlled storage decreased 4.3% to 2,191 GWh; South Island uncontrolled storage decreased 12.2% to 354 GWh; with Taupo storage increasing 30.9% to 221 GWh.
The Clean Car Discount
By Greg Sise, July 10, 2019
The government released a consultation paper yesterday on the Clean Car Standard and Clean Car Discount. The Clean Car Standard would require importers of new and used vehicles to lower the average emissions of the vehicles they bring into the country. The Clean Car Discount increases the cost of vehicles t
Hydro Watch - 27 June 2019, Issue 1,158
By Ruth Heron, June 28, 2019
Total storage decreased 216.7 GWh over the last week. South Island controlled storage decreased 4.6% to 2,406 GWh; South Island uncontrolled storage decreased 16.9% to 435 GWh; with Taupo storage decreasing 5.7% to 203 GWh.
Hydro Watch - 20 June 2019, Issue 1,157
By Ruth Heron, June 21, 2019
Total storage decreased 206 GWh over the last week. South Island controlled storage decreased 3% to 2523 GWh; South Island uncontrolled storage decreased 19.6% to 523 GWh; with Taupo storage decreasing 0.6% to 215 GWh.
Hydro Watch - 13 June 2019, Issue 1,156
By Ruth Heron, June 13, 2019
Total storage decreased 215.8 GWh over the last week. South Island controlled storage decreased 2.8% to 2,600 GWh; South Island uncontrolled storage decreased 19.6% to 650 GWh; with Taupo storage increasing 8.2% to 216 GWh
The three most important issues for the 2020s - #2, The Hedge Market
By Greg Sise, June 10, 2019
This is the second in a series of three posts on what I see as the most important issues for the electricity market for the 2020s. The first issue was disclosure in the gas market, which has as much impact on electricity as it has on gas, and is woefully inadequate. The second issue, and the topic of this post, is the electricity hedge market: how it is not working for new retail
Hydro Watch - 6 June 2019, Issue 1,155
By Ruth Heron, June 7, 2019
Total storage increased 168.1 GWh over the last week. South Island controlled storage increased 4.8% to 2,674 GWh; South Island uncontrolled storage decreased 2.9% to 809 GWh; with Taupo storage increasing 52.2% to 200 GWh.
Hydro Watch - 30 May 2019, Issue 1,154
By Ruth Heron, May 31, 2019
Total storage increased 283.1 GWh over the last week. South Island controlled storage decreased 0.2% to 2,550 GWh; South Island uncontrolled storage increased 52.2% to 833 GWh; with Taupo storage increasing 3.2% to 131 GWh.
Hydro Watch - 23 May 2019, Issue 1,153
By Ruth Heron, May 23, 2019
Total storage decreased 93 GWh over the last week. South Island controlled storage decreased 1.9% to 2,557 GWh; South Island uncontrolled storage decreased 6.2% to 547 GWh; with Taupo storage decreasing 5.5% to 127 GWh.
Hydro Watch - 16 May 2019, Issue 1,152
By Ruth Heron, May 17, 2019
Total storage increased 130 GWh over the last week. South Island controlled storage increased 3% to 2,606 GWh; South Island uncontrolled storage increased 9.3% to 583 GWh; with Taupo storage increasing 3.8% to 135 GWh.
Hydro Watch - 9 May 2019, Issue 1,151
By Ruth Heron, May 9, 2019
Total storage decreased 117.3 GWh over the last week. South Island controlled storage decreased 1.9% to 2531 GWh; South Island uncontrolled storage decreased 8.4% to 534 GWh; with Taupo storage decreasing 12.4% to 130 GWh.
Hydro Watch - 2 May 2019, Issue 1,150
By Ruth Heron, May 6, 2019
Total storage increased 184.7 GWh over the last week. South Island controlled storage increased 2.6% to 2,581 GWh; South Island uncontrolled storage increased 26% to 582 GWh; with Taupo storage remaining steady at 148 GWh.
The three most important issues for the 2020s - #1, Gas Disclosure
By Greg Sise, May 2, 2019
This is the first in a series of three posts on what I see as the most important issues for the electricity market, and by association the gas market, for the 2020s. This first post is actually a submission to the Gas Indsutry Company's recent consultation on information disclosure in the wholesale gas market. The GIC documents and all subsmissions can be found at
Hydro Watch - 25 April 2019, Issue 1,149
By Ruth Heron, April 29, 2019
Total storage decreased 65.6 GWh over the last week. South Island controlled storage decreased 1.2% to 2,517 GWh; South Island uncontrolled storage decreased 8.4% to 462 GWh; with Taupo storage increasing 5.8% to 148 GWh.
Hydro Watch - 18 April 2019, Issue 1,148
By Ruth Heron, April 18, 2019
Total storage decreased 42.5 GWh over the last week. South Island controlled storage increased 0.9% to 2,548 GWh; South Island uncontrolled storage decreased 9% to 504 GWh; with Taupo storage decreasing 9.5% to 140 GWh.
Hydro Watch - 11 April 2019, Issue 1,147
By Ruth Heron, April 11, 2019
Total storage decreased 40.8 GWh over the last week. South Island controlled storage decreased 0.1% to 2,526 GWh; South Island uncontrolled storage decreased 4.4% to 554 GWh; with Taupo storage decreasing 7.1% to 155 GWh.
Hydro Watch - 4 April 2019, Issue 1,146
By Ruth Heron, April 4, 2019
Total storage increased 194.3 GWh over the last week. South Island controlled storage increased 8.9% to 2,529 GWh; South Island uncontrolled storage decreased 2.8% to 580 GWh; with Taupo storage increasing 2.8% to 166 GWh
Hydro Watch - 28 March 2019, Issue 1,145
By Ruth Heron, March 28, 2019
Total storage increased 601.7 GWh over the last week. South Island controlled storage increased 16.8% to 2322 GWh; South Island uncontrolled storage increased 94.5% to 597 GWh; with Taupo storage decreasing 11.8% to 162 GWh.
Hydro Watch - 21 March 2019, Issue 1,144
By Ruth Heron, March 22, 2019
Total storage decreased 63.5 GWh over the last week. South Island controlled storage increased 1.2% to 1,989 GWh; South Island uncontrolled storage decreased 17.2% to 307 GWh; with Taupo storage decreasing 11.4% to 184 GWh.
Hydro Watch - 14 March 2019, Issue 1,143
By Ruth Heron, March 15, 2019
Total storage decreased 39.3 GWh over the last week. South Island controlled storage decreased 1.4% to 1,965 GWh; South Island uncontrolled storage decreased 2.6% to 371 GWh; with Taupo storage decreasing 1.2% to 207 GWh.
Hydro Watch - 7 March 2019, Issue 1,142
By Ruth Heron, March 8, 2019
Total storage decreased 219.1 GWh over the last week. South Island controlled storage decreased 5.8% to 1,992 GWh; South Island uncontrolled storage decreased 15.7% to 380 GWh; with Taupo storage decreasing 10.6% to 210 GWh.
Hydro Watch - 28 February 2019, Issue 1,141
By Ruth Heron, March 1, 2019
Total storage increased 1.9 GWh over the last week. South Island controlled storage remained the same on 2,116 GWh; South Island uncontrolled storage increased 2.7% to 451 GWh; with Taupo storage decreasing 4.3% to 235 GWh.
Hydro Watch - 21 February 2019, Issue 1,140
By Ruth Heron, February 21, 2019
Total storage increased 32.3 GWh over the last week. South Island controlled storage decreased 2.6% to 2,115 GWh; South Island uncontrolled storage increased 35.9% to 439 GWh; with Taupo storage decreasing 10% to 245 GWh.
Hydro Watch - 14 February 2019, Issue 1,139
By Ruth Heron, February 15, 2019
Total storage decreased 206.2 GWh over the last week. South Island controlled storage decreased 5.1% to 2,172 GWh; South Island uncontrolled storage decreased 17.1% to 323 GWh; with Taupo storage decreasing 7.6% to 272 GWh.
Hydro Watch - 7 February 2019, Issue 1,138
By Ruth Heron, February 7, 2019
Total storage decreased 95.1 GWh over the last week. South Island controlled storage decreased 0.1% to 2,289 GWh; South Island uncontrolled storage decreased 12.8% to 390 GWh; with Taupo storage decreasing 10.7% to 295 GWh.
Hydro Watch - 31 January 2019, Issue 1,137
By Ruth Heron, January 31, 2019
Total storage increased 115.8 GWh over the last week. South Island controlled storage increased 5% to 2,291 GWh; South Island uncontrolled storage increased 7.7% to 447 GWh; with Taupo storage decreasing 7.1% to 330 GWh.
Hydro Watch - 24 January 2019, Issue 1,136
By Ruth Heron, January 24, 2019
Total storage increased 129.2 GWh over the last week. South Island controlled storage increased 3.1% to 2,182 GWh; South Island uncontrolled storage increased 21.5% to 415 GWh; with Taupo storage decreasing 2.9% to 356 GWh.
Hydro Watch - 17 January 2019, Issue 1,135
By Ruth Heron, January 17, 2019
Total storage decreased 9.8 GWh over the last week. South Island controlled storage increased 1.3% to 2,116 GWh; South Island uncontrolled storage decreased 15.5% to 342 GWh; with Taupo storage increasing 7.8% to 366 GWh.
Hydro Watch - 10 January 2019, Issue 1,134
By Ruth Heron, January 10, 2019
Total storage increased 154.1 GWh over the last week. South Island controlled storage increased 3.4% to 2089 GWh; South Island uncontrolled storage increased 29.1% to 404 GWh; with Taupo storage decreasing 1.4% to 340 GWh.
Hydro Watch - 20 December 2018, Issue 1,131
By Ruth Heron, December 20, 2018
Total storage increased 41.4 GWh over the last week. South Island controlled storage increased 1.7% to 1,940 GWh; South Island uncontrolled storage decreased 2.4% to 368 GWh; with Taupo storage increasing 7.1% to 282 GWh.
Hydro Watch - 13 December 2018, Issue 1,130
By Ruth Heron, December 14, 2018
Total storage decreased 58.3 GWh over the last week. South Island controlled storage increased 1.3% to 1,909 GWh; South Island uncontrolled storage decreased 16.1% to 377 GWh; with Taupo storage decreasing 3.6% to 263 GWh.
Hydro Watch - 06 December 2018, Issue 1,129
By Ruth Heron, December 6, 2018
Total storage increased 76.6 GWh over the last week. South Island controlled storage increased 5.5% to 1,885 GWh; South Island uncontrolled storage decreased 5.5% to 450 GWh; with Taupo storage increasing 1.8% to 273 GWh.
Hydro Watch - 29 November 2018, Issue 1,128
By Ruth Heron, November 29, 2018
Total storage increased 89.5 GWh over the last week. South Island controlled storage increased 7.6% to 1,787 GWh; South Island uncontrolled storage decreased 8.5% to 476 GWh; with Taupo storage increasing 2.8% to 268 GWh.