GridCheck NZ

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

Saved 2842 price readings and 201 generation readings since 2026-10-17.

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Right now

Demand (load)4,574 MW · North 2,901 · South 1,673
Cook Strait cable (HVDC)604 MW South → North (limit 848 MW, 71% used)
Renewable95.8%
Carbon39.4 g CO₂/kWh · month avg 34.12 · year avg 45.71
Reserve prices North$0.99 fast / $1 sustained
Reserve prices South$0 fast / $0 sustained

Load as at 2026-10-22 12:25. HVDC as at 2026-10-22 11:30.

Wholesale price now

Half-hour ending 22/10/2026, 12:00:00 pm (trading period 25). $ per MWh, and cents per kWh — before lines, retail and GST.

Northland$51.005.1c
Auckland$50.995.1c
Hamilton$49.124.9c
Hawkes Bay$47.084.7c
Edgecumbe$46.594.7c
Taranaki$45.034.5c
Bunnythorpe$44.374.4c
Wellington$41.624.2c
Nelson$37.193.7c
Christchurch$36.823.7c
West Coast$36.123.6c
Canterbury$35.433.5c
Otago$35.033.5c
Southland$33.793.4c

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$40015:0018:0021:0000:0003:0006:0009:0012:00

Generation mix now

As at 22 Oct 2026 11:30 · total 4932 MW · renewable 95.8%

SourceMWShare
Hydro247950.3%
Geothermal102920.9%
Wind83216.9%
Solar3857.8%
Gas951.9%
Co-Gen611.2%
Coal511.0%
Battery00.0%
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
01,0002,0003,0004,0005,0006,000MW12:0015:0018:0021:0000:0003:0006:0009:00
Show as a table
TimeHydroGeoWindSolarGasCoalOilCo-GenBatteryTotalRenew.
11:302479102983238595510610493295.8%
11:002602103579637195510570500795.94%
10:302568103880739498510590501595.86%
10:0026131040814389107500594507695.75%
09:3027401040774365153520574518694.93%
09:00291610457183321988105613535993.73%
08:30309010447052591981100512545993.42%
08:003262104669518619814105330561192.97%
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%

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.