The wrong way
- PE Unit Rate: Looks competitive
- PE Standing Charge: Looks competitive
- Decision: PE must be cheaper
Got a PE Solutions quote in front of you?
Don't compare it using the unit rate and the line labelled Standing Charge alone.
This is particularly important with PE.
We have reviewed PE quotations for customers where fixed costs are shown across different charge lines.
That means the Standing Charge shown on the quotation may not represent the complete fixed cost of the supply.
Before signing, work through the whole quotation.
We will show you exactly what to check.
We compare business energy quotations every day.
One thing we specifically check on PE quotations is how the charges are presented.
We have seen real PE customer quotations where the headline Standing Charge was only one part of the fixed daily cost.
Other fixed costs were shown separately.
That creates an easy comparison mistake.
A customer can look at:
Supplier A standing charge: £4.00/day
PE standing charge: £1.25/day
and conclude that PE has the cheaper fixed cost.
But that comparison is meaningless until every applicable PE fixed charge has been checked.
If the PE quotation also contains separate daily distribution or transmission charges, those matter too.
The correct question is not:
“Which supplier has the lowest standing charge?”
It is:
“What will each quotation actually cost me?”
This is not a theoretical warning.
In PE quotations and contract information supplied to us by customers, we have seen fixed costs separated into different lines.
For example, a quotation can contain a Standing Charge while also showing separate distribution or transmission-related fixed charges.
The precise figures vary by quotation and supply.
That is why we do not publish one made-up PE charge and pretend it applies to everybody.
We check the actual document.
PE itself currently publishes a number of separate electricity charge categories, including:
Not every charge applies to every supply.
But every applicable charge needs to be understood.
Check:
Then calculate the expected annual cost.
Before comparing anything, find:
If any of these are wrong or unclear, resolve that before signing.
Check the legal customer first.
This might be:
Do not sign simply because the trading name looks familiar.
For a limited company, check the actual registered company name.
If the wrong business is on the contract, fix it before proceeding.
Check the complete supply address.
This matters particularly where a business has:
Do not assume the quotation relates to the correct meter simply because the postcode is right.
For electricity, check the MPAN.
For gas, check the MPRN.
Compare it with a recent bill.
If you have several meters, do this for every quotation.
A fantastic price for the wrong meter is useless.
Find the proposed start date.
Then find the contract length or end date.
Do not look only at:
12 months
24 months
36 months
Check the actual dates where supplied.
Make sure the proposed start does not conflict with an existing fixed contract.
If you are renewing PE, compare the proposed start with your current Contract End Date.
PE Renewals GuideThis number matters enormously.
For electricity this is usually expressed in kWh.
For gas, annual consumption is also compared in kWh.
Check the consumption PE has used against:
Do not assume an annual-cost estimate is meaningful if the consumption behind it is wrong.
Imagine a quotation is calculated using 20,000 kWh.
But the business actually uses 50,000 kWh.
The annual-cost estimate is not giving you a realistic picture.
The rates may be correct.
The calculation can still be unsuitable for comparing your expected cost.
Use the best consumption information available.
The unit rate is the price charged for each kWh of energy covered by that rate.
For a simple single-rate electricity meter, there may be one main unit rate.
But not every meter is single-rate.
You may have:
Do not compare a multi-rate PE quotation against another supplier using only one of the rates.
Suppose a meter uses:
30,000 kWh during the day
20,000 kWh at night
You need to calculate:
30,000 × Day Rate
plus
20,000 × Night Rate
Using all 50,000 kWh against the Day Rate gives the wrong answer.
Using all 50,000 kWh against the Night Rate gives the wrong answer.
If you do not know the split, check the existing bills or consumption data.
The Standing Charge is normally expressed as a daily amount.
For example:
125p/day = £1.25/day.
To turn that into a simple annual figure:
£1.25 × 365 = £456.25 per year.
But with a PE quotation, do not stop there.
The line labelled Standing Charge may not represent every fixed cost applying to the quotation.
Keep reading.
PE currently publishes Distribution Fixed Charge as a separate charge category measured in p/day.
If a Distribution Fixed Charge appears on your quotation and applies to the contract, include it when assessing the complete daily fixed cost.
Standing Charge:
125p/day
Distribution Fixed Charge:
137p/day
Simple combined daily fixed cost of those two lines:
262p/day
or:
£2.62/day
Annual cost:
£2.62 × 365
=
£956.30/year
This example demonstrates the calculation only.
Do not imply 137p/day is PE's standard current Distribution Fixed Charge.
Actual charges depend on the individual quotation.
PE also currently publishes Transmission Fixed Charge as a separate charge category measured in p/day.
If your quotation contains an applicable Transmission Fixed Charge, it needs to be considered alongside the other applicable fixed charges.
Standing Charge:
125p/day
Transmission Fixed Charge:
290p/day
Simple combined daily fixed cost of those two lines:
415p/day
or:
£4.15/day
Annual:
£4.15 × 365
=
£1,514.75/year
Again, this is a calculation example based on the structure we have seen on PE customer documentation.
It is not a statement that every PE quotation contains a 290p/day Transmission Fixed Charge.
Here is the comparison mistake we want customers to avoid.
Imagine you look only at:
PE Standing Charge:
£1.25/day
Another supplier:
£3.00/day
At first glance PE appears £1.75/day cheaper.
But now imagine that the PE quotation also contains an applicable:
Transmission Fixed Charge:
£2.90/day
The relevant PE fixed daily cost from those two lines becomes:
£1.25 + £2.90
=
£4.15/day
Now the comparison looks completely different.
That is why we read the whole PE quotation.
Display this as an educational worked example.
The charge structure and figures on an individual PE quotation must always be checked.
Total entered fixed daily cost: 0.00p/day
Total entered fixed daily cost: £0.00/day
Annual entered fixed cost: £0.00
Only enter charges that actually apply to your quotation. Do not enter p/kWh charges, p/kVA/day charges or p/kVArh charges into this calculator. Those are calculated differently.
Capacity cost per day: £0.00
Capacity cost for selected period: £0.00
Use the capacity and rate shown on the relevant quotation or supply information. Do not guess the kVA.
We have also seen PE customer quotation information where the balance between distribution and transmission-related fixed charges changed between quotations.
For example, a previous structure might contain:
A Standing Charge
A separate Distribution Fixed Charge
A separate Transmission Fixed Charge
while a newer quotation may show:
A Standing Charge
£0.00 Distribution Fixed Charge
A different Transmission Fixed Charge
That means comparing only one charge line between the old and new quotation can be misleading.
Compare the complete cost structure on both.
This needs separate treatment.
PE currently lists Capacity Charge in:
p/kVA/day
That is not the same measurement as:
p/day.
So do not simply take:
Standing Charge p/day
plus
Capacity Charge p/kVA/day
and add the two numbers together.
You need to know the applicable capacity in kVA.
A simple capacity calculation is:
Capacity in kVA
×
Capacity rate in p/kVA/day
×
number of days
Agreed capacity:
100 kVA
Capacity charge:
5p/kVA/day
Daily capacity cost:
100 × 5p
=
500p/day
=
£5/day
Annual illustration:
£5 × 365
=
£1,825/year
This is an educational example only.
The 5p rate is not a PE quotation or current PE standard rate.
PE currently lists Excess Capacity Charge in p/kVA/day.
This is separate from an ordinary p/day fixed charge.
Do not automatically assume an excess-capacity charge will apply every day or to every supply.
If it appears on the quotation or contract, establish:
If you do not understand it, ask before signing.
PE currently lists Reactive Capacity Charge in p/kVArh.
Again, that is a different unit.
It cannot simply be added to:
p/day
p/kWh
or
p/kVA/day
as though they were the same thing.
If a reactive charge applies to the supply, understand the measured quantity and rate before trying to calculate its financial effect.
For a customer who has never heard of kVArh, the important point is simple:
Do not ignore the line.
And do not guess what it costs.
Keep reading after the rates you recognise.
PE's current bill guidance says customer charges can include:
PE also says new network charges or government levies may arise during a contract and that, where the contract allows, applicable charges can be passed through.
That is another reason to read the contract terms rather than treating a business energy quotation as only two numbers.
| Charge | Unit | Means | Simple calculation |
|---|---|---|---|
| Unit Rate | p/kWh | Charge for each kWh covered by the rate | kWh × rate |
| Standing Charge | p/day | Daily fixed charge | rate × days |
| Distribution Fixed Charge | p/day | Separate daily charge where applicable | rate × days |
| Transmission Fixed Charge | p/day | Separate daily charge where applicable | rate × days |
| Capacity Charge | p/kVA/day | Charge based on applicable capacity | kVA × rate × days |
| Excess Capacity Charge | p/kVA/day | Capacity-related charge where applicable | Depends on applicable excess capacity and terms |
| Reactive Capacity Charge | p/kVArh | Charge based on reactive energy where applicable | kVArh × rate |
| Nuclear RAB Levy | p/kWh | PE currently lists this as a separate charge category | Applicable kWh × rate where charged |
| Network Charging Compensation Charge | p/kWh | PE currently lists this as a separate charge category | Applicable kWh × rate where charged |
This table explains how the units work.
It does not mean every charge applies to every PE customer.
Always use the actual quotation and contract.
Calculated from the figures you entered
Annual unit cost: £0.00
Annual p/day fixed cost: £0.00
Annual capacity cost if entered: £0.00
Annual additional p/kWh cost if entered: £0.00
Total calculated annual cost: £0.00
Equivalent monthly average: £0.00
Equivalent daily average: £0.00
This is not a PE quotation and does not guarantee the amount you will be billed. Your actual quotation may contain additional charges or terms not included in this calculator.
PE calculated annual cost: £0.00
Other supplier calculated annual cost: £0.00
Based on the figures entered, the difference is £0.00. The calculated annual costs are equal.
Do not assume that.
PE's current bill guidance says that on a fixed-term contract the Standing Charge and Unit Rate will typically not increase.
But PE also says customers may become subject to new network charges or government levies during the contract and that, where the contract allows, these can be passed through.
It also says network charges and government levies can be updated annually.
So when comparing a PE fixed contract, establish exactly:
Do not rely on the word “fixed” by itself.
For a straightforward single-rate quotation with only p/kWh and p/day charges entered into the calculation:
Annual unit cost:
Annual kWh × unit rate ÷ 100
Annual fixed daily cost:
Total applicable p/day charges ÷ 100 × 365
Then:
Annual unit cost + annual fixed daily cost
=
Simple estimated annual cost
But stop there if the quotation also contains charges calculated using:
kVA
kVArh
different consumption bands
separate registers
or another calculation method.
Those need to be calculated correctly as well.
Imagine a meter uses only 3,000 kWh a year.
A difference of 1p/kWh changes the annual unit cost by:
£30.
But a difference of £2/day in fixed charges changes the annual cost by:
£730.
That is why a low-usage meter cannot sensibly be compared using the unit rate alone.
This is particularly relevant for supplies such as:
Enter different fixed costs and unit rates to calculate a meaningful crossover. If one quote is cheaper on both entered components, there is no crossover.
Simple comparison only. Does not include capacity, reactive, pass-through or other charges.
At 100,000 kWh per year:
1p/kWh = £1,000/year
2p/kWh = £2,000/year
3p/kWh = £3,000/year
At 500,000 kWh per year:
1p/kWh = £5,000/year
So on a high-usage supply, do not become so focused on a fixed daily charge that you ignore a material unit-rate difference.
The correct comparison uses both.
Sometimes the quotation with the higher fixed cost is still cheaper overall.
That depends on consumption.
Supplier A:
£1/day total fixed cost
30p/kWh
Supplier B:
£4/day total fixed cost
27p/kWh
Supplier B costs an extra:
£3/day × 365
=
£1,095/year
in fixed cost.
But its unit rate is:
3p/kWh cheaper.
Breakeven consumption:
£1,095 ÷ £0.03
=
36,500 kWh/year.
Below approximately 36,500 kWh, Supplier A is cheaper using these simple figures.
Above approximately 36,500 kWh, Supplier B is cheaper.
This is why there is no universally “best” standing charge or unit rate.
Use it as a useful reference.
Do not treat it as a substitute for checking the quotation.
Ask:
If the underlying consumption is wrong, the annual estimate can be a poor guide even where the quoted rates themselves are correct.
Check.
Do not assume.
Business energy quotations and published rates can be displayed exclusive of VAT.
When comparing two suppliers, make sure you are comparing figures on the same VAT basis.
Also remember that some qualifying supplies can be eligible for reduced VAT treatment.
Do not change a VAT status simply because a customer says they are a charity.
Eligibility depends on the use and circumstances of the supply.
Check whether Climate Change Levy is included in the annual comparison or shown separately.
PE's own bill guidance identifies Climate Change Levy as one of the charge types that can appear on an energy bill.
Do not accidentally include CCL on one supplier's annual cost while excluding it from the other and then call the comparison fair.
Use the same basis.
A 12-month contract and a 36-month contract are not the same product.
A longer agreement can provide price certainty for longer.
A shorter agreement allows an earlier market review.
Neither is automatically better.
Check:
Then decide.
You should be able to answer:
If you cannot answer a material question from the documentation, ask before signing.
Send the whole quotation.
Not just the first page.
Not just a screenshot of the unit rate.
And not just the line labelled Standing Charge.
Send:
If there are several meters, tell us which quotation belongs to which meter.
We can then check the charges and compare the quotation properly.
Upload Your PE QuoteThe first thing we want to know is whether we are comparing the whole quote.
With PE, we specifically look below the Standing Charge.
If there is a distribution charge, transmission charge, capacity charge or another separate charge, we want to know about it.
Then I check the units.
p/day is one thing.
p/kWh is another.
p/kVA/day is another.
You can't just add all the numbers together.
Once we understand how every applicable charge is calculated, we can work out what the contract is likely to cost using the customer's actual consumption.
Then we can compare it properly.
This is one of the biggest things we look for on a PE quote.
We've had PE prices in front of us where you could easily look at the Standing Charge and think:
“That's cheap.”
But then there are other charges further down.
That's why we keep saying send us the whole quote.
If you send us a screenshot saying:
24.65p and £1.25 a day
We still don't know whether that's a good deal.
What else is on the quote?
Is there a transmission charge?
Distribution?
Capacity?
What usage have they quoted on?
Is it day and night?
How long is the contract?
That's the information we need.
And this isn't us saying PE is expensive.
We've put plenty of customers with PE.
It's us saying compare PE properly.
The same rule applies to every supplier.
We want to know what you are actually going to pay, not which two numbers look nicest on the front of the quotation.
The Best Energy Rates
Keep the answers with the quotation.
Start with the customer, supply, meter, contract dates and annual consumption. Then check every unit rate, the Standing Charge and all other applicable charges. Do not assume the Standing Charge is the only fixed cost shown on a PE quotation.
Not necessarily. We have seen PE customer quotations where fixed costs are shown across separate lines. Check for applicable Distribution Fixed, Transmission Fixed, capacity-related and other charges before calculating the complete cost.
PE currently lists Distribution Fixed Charge as a separate electricity charge category measured in p/day. If one applies to your quotation, include it when assessing the complete fixed daily cost.
PE currently lists Transmission Fixed Charge as a separate charge category measured in p/day. If it applies to your quotation, it should be considered alongside the other applicable fixed charges.
Not by simply adding the displayed numbers. A Standing Charge is expressed in p/day, while PE currently lists Capacity Charge in p/kVA/day. To calculate a capacity charge you also need the applicable capacity in kVA.
It means pence for each kVA of applicable capacity for each day. For example, 100 kVA at 5p/kVA/day would equal 500p or £5 per day. The 5p figure is only an educational example, not a PE standard rate.
PE currently lists Excess Capacity Charge in p/kVA/day. If it appears on your contract, establish when it applies, the relevant capacity and how the charge is calculated rather than treating it as an ordinary p/day charge.
PE currently lists Reactive Capacity Charge in p/kVArh. This is a different measurement from p/day, p/kWh and p/kVA/day, so it needs to be calculated using the relevant reactive energy information where it applies.
The line labelled Standing Charge may not tell you the complete fixed cost of a PE quotation. Check whether other applicable daily fixed charges are shown separately before comparing PE with another supplier.
Use the annual consumption against the relevant unit rate or rates, add the annual cost of all applicable p/day charges and then correctly calculate any capacity, reactive or other charges that apply. Do not combine charges with different units as though they were the same.
Do not assume so. PE's current bill guidance says Standing Charge and Unit Rate will typically not increase on a fixed-term contract, but it also says new network charges or government levies can arise and, where the contract allows, applicable charges can be passed through.
Use the same consumption and comparison basis for both. Calculate the complete cost of each quotation, including applicable fixed and additional charges, rather than comparing only the unit rate and headline Standing Charge.
Use the consumption on each register. Multiply day consumption by the day rate and night consumption by the night rate. Do not apply one rate to the whole annual consumption unless that genuinely reflects the quotation.
Consumption determines how much impact the unit rate has on annual cost. Fixed charges can dominate a low-usage supply, while a small unit-rate difference can be worth thousands of pounds on a high-usage meter.
No. Treat it as an estimate. Check the consumption and charges used to produce it and whether all applicable costs are included. Actual bills can also depend on consumption and the applicable contract terms.
No. A low fixed cost can be offset by a higher unit rate, and a higher fixed cost can sometimes be worthwhile if the unit rate is sufficiently lower. Compare the complete annual cost using your consumption.
Yes. Send us the complete PE quotation and a recent bill. We can check the meter, consumption, rates, fixed charges and other applicable charges before comparing the available options from our supplier panel.
Send the whole PE quotation and a recent bill. Do not crop the document to show only the unit rate and Standing Charge because other parts of the quotation may materially affect the comparison.
The Best Energy Rates is an independent business energy intermediary. We are not PE Solutions or Pozitive Energy.