The daily charge problem
Look at a standard retail electricity bill. You'll find two numbers: a daily charge (usually $1.50–5.00 per day) and a per-kWh rate. That's it. No breakdown of what's inside those numbers — just a charge that arrives every day regardless of whether you used any power, and a rate that seems fixed and fair.
It isn't.
Buried inside that daily charge are several completely separate costs that your retailer has bundled together at their discretion: Vector's network fixed charge, Transpower transmission, metering, and the retailer's own margin. Some retailers also shift part of their variable cost into the daily charge to make their per-kWh rate look more competitive than it is.
The result: some Auckland customers on standard retail plans are paying $3–5 per day in daily charges — $90–150/month — before they've consumed a single kilowatt-hour. Most have no idea what's in that number.
So what does Vector actually charge? It's public information. And the gap between what they charge and what some retailers pass on is significant.
What Vector actually charges
Vector publishes their residential pricing schedule publicly every year. Here are the real numbers from their April 2026 schedule (excluding GST):
This is what Vector charges your retailer. A standard residential customer's monthly Vector network cost works out to roughly:
- Fixed: $1.9220 × 30 days = $57.66
- Peak kWh (e.g. 150 kWh during winter peak windows): $0.1047 × 150 = $15.71
- Off-peak kWh: $0.00
Total Vector network charge: ~$73/month. That's what a spot-plan retailer passes through to you. Compare that to a flat-rate retailer charging $3.50/day — $105/month in daily charges alone, before any usage. The difference represents transmission, metering, and margin, all bundled invisibly.
For standard users, Vector's off-peak variable rate is $0.00/kWh — and from October through April, almost all consumption is off-peak. That means the variable network charge is effectively zero in summer. On a flat-rate plan, this saving never reaches you. On a spot plan, it shows up directly on your bill.
What a spot plan actually shows you
When you switch to a spot plan through a retailer like Electric Kiwi, Ecotricity, or Powerhub, your bill is broken into its real parts. For the first time, you see:
- The wholesale spot price component — what electricity actually cost at your grid exit point, updated every 30 minutes
- The Vector network charge — passed through at cost from Vector's published schedule, not marked up or bundled
- Transpower transmission — the national grid cost, also passed through
- Metering — your smart meter provider's actual charge
- The retailer's service fee — a small, explicitly stated daily or monthly amount
Each line is separate. Each has a source. You can open Vector's April 2026 pricing schedule and verify that your network charge matches exactly what Vector bills your retailer — because on a spot plan, it's a pass-through, not a discretionary bundle.
The six layers of your power bill
Whether you're on a flat-rate or spot plan, your bill has the same six components. The difference is whether you can see them:
| Component | ~Share | Visible on spot? | Visible on flat-rate? |
|---|---|---|---|
| Wholesale electricity | ~38% | ✓ Per half-hour, at cost | ✗ Bundled into c/kWh |
| Vector network | ~27% | ✓ Passed through at published rate | ✗ Bundled into daily charge |
| Transpower transmission | ~8% | ✓ Separate line | ✗ Bundled into daily charge |
| Retailer margin & services | ~11% | ✓ Explicit daily/monthly fee | ✗ Spread invisibly across both charges |
| Metering | ~4% | ✓ Separate line | ✗ Bundled into daily charge |
| GST | 15% on total | ✓ | ✓ |
On a flat-rate plan, the daily charge can contain up to five of those six components, blended at the retailer's discretion. On a spot plan, all six are visible and separately accounted for.
A real example bill, line by line
Here's what a typical Auckland standard-user spot bill looks like for July — a winter month, 650 kWh consumed, roughly 200 kWh falling during peak windows:
| Line item | Basis | Amount |
|---|---|---|
| Wholesale electricity | Avg ~$110/MWh × 650 kWh, pass-through | $71.50 |
| Vector network — daily | $1.9220/day × 31 days | $59.58 |
| Vector network — peak variable | $0.1047/kWh × 200 kWh peak | $20.94 |
| Vector network — off-peak variable | $0.00/kWh × 450 kWh | $0.00 |
| Transpower transmission | Pass-through, ~2.8¢/kWh | $18.20 |
| Metering | ~1.5¢/kWh | $9.75 |
| Retailer service fee | Retailer's stated fee | $12.00 |
| Subtotal (excl. GST) | $191.97 | |
| GST (15%) | $28.80 | |
| Total | $220.77 |
Now the same month on a standard flat-rate plan at $3.50/day and 30¢/kWh:
| Line item | Amount |
|---|---|
| Daily charge ($3.50/day × 31 days) | $108.50 |
| Usage (30¢/kWh × 650 kWh) | $195.00 |
| Subtotal | $303.50 |
| GST (15%) | $45.53 |
| Total | $349.03 |
The $128 difference between these two bills is almost entirely the wholesale electricity component — spot pays $71.50 at cost; the flat-rate plan bundles roughly that same cost into $195 at a marked-up average rate. The network charges, metering, and transmission cost about the same in both cases. You just couldn't see them before.
Of the $108.50 flat-rate daily charge: roughly $59.58 is Vector's actual network fixed charge, ~$18 is Transpower transmission, ~$9.75 is metering. That's ~$87 of identifiable underlying cost. The remaining ~$21/month is the retailer's margin — invisible inside a single daily number.
What this means when comparing plans
Daily charges are not the same thing across different retailers. A $1.20/day retailer service fee on a spot plan is a completely different thing from a $3.50/day bundled daily charge on a flat-rate plan. They look like the same type of number but measure entirely different things — comparing them directly is meaningless.
Vector's TOU structure is working on you whether you see it or not. Vector charges more for peak-period consumption during winter months. On a flat-rate plan, this cost is averaged into your rate and invisible. On a spot plan, you see it directly — and if you shift loads out of peak windows (7–11am and 5–10pm, May–September), you save at the network layer as well as the wholesale layer. The savings stack.
Summer is structurally different from winter, and your bill should reflect it. Standard users pay $0/kWh variable network charge off-peak — which in summer is effectively all the time. On a flat plan, that seasonal cost reduction never reaches you. On spot, it shows up as lower network charges in warmer months, on top of typically lower wholesale prices.
Spot plans don't eliminate the retailer's margin — they make it visible. Electric Kiwi, Ecotricity, and Powerhub all structure their service fees differently. On a spot plan you can see exactly what each retailer charges for their service and compare them directly. That transparency alone is worth something.
Information is the thing that actually saves you money
There's a reason retailers have historically preferred a single daily charge and a single per-kWh rate. When your bill is two numbers, you can't tell what's driving it up, what's fixed, or where you might have any control. You're paying blindly into a black box.
A spot plan changes that. When the wholesale price is a separate line that updates every 30 minutes, you can actually see what electricity costs right now — and make decisions based on it. Run the dishwasher at midnight when the price drops to $20/MWh. Hold off the dryer at 6pm when it's at $400/MWh. Charge the car overnight instead of in the evening. None of these decisions are difficult. They just require knowing the price — which, until you're on a spot plan, you never do.
This is why price visibility isn't just a transparency nicety. It's the mechanism by which you save money. A household that can see the wholesale price and acts on it — even loosely, even occasionally — will consistently come out ahead of one paying a flat rate in the dark.
Most households switch to spot to access cheaper wholesale electricity. The itemised bill that comes with it — seeing Vector's actual charges, the Transpower pass-through, the metering cost each as their own line — is a side effect. But it's the side effect that makes clear how much of a standard retail daily charge is markup, and how much is legitimate infrastructure cost. Now you know the difference.