GridCheck NZ

An independent, open check on New Zealand's power system: what's generating, what it costs, and where your bill goes.

Saved 2730 price readings and 193 generation readings since 2026-10-17.

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Right now

Demand (load)5,313 MW · North 3,410 · South 1,903
Cook Strait cable (HVDC)687 MW South → North (limit 865 MW, 79% used)
Renewable93.01%
Carbon54.26 g CO₂/kWh · month avg 34.02 · year avg 45.71
Reserve prices North$1 fast / $5 sustained
Reserve prices South$0 fast / $0 sustained

Load as at 2026-10-22 08:25. HVDC as at 2026-10-22 07:30.

Wholesale price now

Half-hour ending 22/10/2026, 8:00:00 am (trading period 17). $ per MWh, and cents per kWh — before lines, retail and GST.

Northland$158.4715.8c
Auckland$156.4115.6c
Hamilton$152.4315.2c
Hawkes Bay$144.2614.4c
Edgecumbe$143.6914.4c
Taranaki$137.5413.8c
Bunnythorpe$136.5513.7c
Wellington$127.9912.8c
Nelson$38.733.9c
Christchurch$37.923.8c
West Coast$37.303.7c
Canterbury$35.743.6c
Otago$35.103.5c
Southland$33.983.4c

Last 24 hours

One reading every half-hour. Hover for the numbers. Gaps mean no reading was saved.

North Island averageSouth Island averagethin lines = each zone
$0$100$200$300$40009:0012:0015:0018:0021:0000:0003:0006:00

Generation mix now

As at 22 Oct 2026 07:30 · total 5644 MW · renewable 93.01%

SourceMWShare
Hydro335859.5%
Geothermal104818.6%
Wind66511.8%
Gas1983.5%
Coal1412.5%
Solar1182.1%
Battery651.2%
Co-Gen500.9%
Diesel/Oil00.0%

Generation mix — last 24 hours

Each bar is one half-hour, newest on the right. Bar height = total power being made. Hover a bar for the numbers.

HydroGeothermalWindSolarGas, coal & otherBattery
01,0002,0003,0004,0005,0006,000MW09:0012:0015:0018:0021:0000:0003:0006:00
Show as a table
TimeHydroGeoWindSolarGasCoalOilCo-GenBatteryTotalRenew.
07:303358104866511819814105065564493.01%
07:00328210496565319114404959548392.92%
06:3031061052608111911350480515292.73%
06:00284110525580187930470477993.16%
05:30259710555250144300470439994.98%
05:0024501055492014400460418695.46%
04:3021861055484014000460391195.26%
04:002145105645109500460379396.27%
03:302159105540309500470375996.22%
03:002190105436509600470375196.2%
02:302200105434509600470374296.18%
02:002212105233009500472373996.18%
01:302295104830309500470378996.24%
01:002409104726009500470385996.3%
00:3025191045255010000480396696.28%
00:0026691044238014200490414195.38%
23:3028611046212014600490431495.48%
23:0030771045159019300500452594.63%
22:3032331041144023700551471093.81%
22:0034691040168023670571497793.97%
21:30365110371900225560574522093.52%
21:003850103316601751020564538793.81%
20:303784102813201891410571533292.72%
20:0037641023132018914205758536692.7%
19:30363910411373189122059138532792.89%
19:003523110416628189100058114528393.28%
18:303446110019483184102058110527893.35%
18:003348109724216313610205771521694.25%
17:30324410932792549610305536516195.05%
17:003041109031633495990551503195.05%
16:3029791098315334817605533497095.72%
16:0028561099355360955305617489095.82%
15:302771110034042395520430482596.07%
15:002631110132743680510410466696.31%
14:302742110432143261520430475496.73%
14:002736109530742661520560473296.44%
13:302734106533842161520570472796.4%
13:001693106928642561520560364395.34%
12:302664109636339381520572470895.95%
12:0026981086365398815205838477595.98%
11:3028181090387364965306034490195.72%
11:00295511003843331005205737501895.79%
10:30297011023783281005305643503095.8%
10:0029951115424323140510561510695.16%
09:3030921125439312142570554522895.13%
09:00316811274552671428105765536294.71%
08:30335811244992311428605928552794.78%
08:003489111953916314210205867567994.62%

What each fuel earned — 2026-10-21

Whole day, all NZ. Average price = what that fuel was paid per MWh on average across the day (weighted by when it ran). Earned = MWh × average price.

FuelMWhAvg $/MWhEarnedShare
Hydro67,299$44.60$3,001,53241.8%
Geothermal27,000$100.46$2,712,38337.7%
Gas3,708$154.93$574,5338.0%
Wind10,307$36.47$375,8855.2%
Solar3,694$78.28$289,1484.0%
Co-Gen1,322$110.60$146,2252.0%
Battery504$170.15$85,8101.2%
Total113,834$63.12$7,185,516

Monthly: power price vs your bill

Cents per kWh, all incl GST. Wholesale = average for the month. Lines = network charges. Retailer & other = what's left (retailer costs and margin, losses, levies, metering). Bill price = MBIE survey, cheapest plan for an 8,000 kWh/yr home.

MonthPlaceWholesaleLinesRetailer & otherBill price
First summary appears on the 1st of next month

Download the data

Spreadsheet files (last 30 days — change days= up to 365): prices · generation · load · hvdc · carbon · reserves · node_prices · wind_solar · fuel_daily · capacity · poc_prices · monthly · retail

Last problem: 2026-10-19T14:00 — fuel_daily (saving): D1_ERROR: Network connection lost.

Sources: Transpower consolidated live data; em6 (Energy Market Services) free data; MBIE Quarterly Survey of Domestic Electricity Prices. Times are NZ time.