Time-of-Use Savings
Model DUoS savings by shifting Elec consumption out of expensive Red peak hours and into cheap Green off-peak periods.
For energy consultants building business cases for load shifting, battery storage, or demand automation.
Try Time-of-Use SavingsShift 50,000 kWh from Red to Green
East Midlands · LV Unrestricted · 2025-26
saved annually, 39.6% lower DUoS cost
Cost before and after shift · DUoS unit charges
| Band | Rate | Current | After | Saving |
|---|---|---|---|---|
| Red (Peak) | 9.247p | £9,247 | £4,624 | -£4,623 |
| Amber | 1.082p | £2,272 | £2,272 | £0 |
| Green (Off-peak) | 0.048p | £91 | £115 | +£24 |
| Total unit charges | £11,610 | £7,011 | -£4,599 |
The journey
Four steps to your load-shift saving
From MPAN to a quantified time-band saving figure, using official DNO published rates.
Enter
Enter MPAN and consumption
Type the site MPAN and enter annual kWh per Red, Amber and Green band. Have only a total annual figure? Enter it and we estimate the split using Profile Class coefficients for that DNO region.
Annual consumption by time band
Identify
Decode supply point and time bands
We decode the MPAN into its DNO region, profile class and tariff, then show the exact Red, Amber and Green hour schedule for that region alongside the live p/kWh rates. Every figure traces to the official charging statement.
DUoS time band schedule · East Midlands 2025-26
Model
Set the load-shift target
Pick a shift preset or drag the slider to move a percentage of Red consumption into Green. Current DUoS cost by band updates live so you can explore the optimal shift for the site before committing to any operational change.
Current consumption by time band · 500,000 kWh total
Results
See the saving by time band
A band-by-band before/after table shows where the saving comes from. Red cost falls sharply; Green cost rises marginally. The headline figure is the net annual DUoS saving, ready to drop into a client proposal.
Shift 50,000 kWh from Red to Green
East Midlands · LV Unrestricted · 2025-26
saved annually, 39.6% lower DUoS cost
Cost before and after shift · DUoS unit charges
| Band | Rate | Current | After | Saving |
|---|---|---|---|---|
| Red (Peak) | 9.247p | £9,247 | £4,624 | -£4,623 |
| Amber | 1.082p | £2,272 | £2,272 | £0 |
| Green (Off-peak) | 0.048p | £91 | £115 | +£24 |
| Total unit charges | £11,610 | £7,011 | -£4,599 |
The problem
Shifting consumption away from peak hours could save your clients thousands
Red band rates - those peak evening hours - cost significantly more than Amber or Green periods. How much more depends on the DNO region, but the difference can be substantial. For larger sites already on half-hourly metering, the opportunity is there but hard to quantify. And with MHHS rolling out, smaller sites are now seeing their actual consumption patterns for the first time.
Without modelling the savings, it's hard to build the business case for operational changes, battery storage, or smart controls.
Why it matters
What you walk away with
Interactive Savings Calculator
Adjust Red, Amber, and Green splits with sliders and see savings update in real-time.
Current Cost Breakdown
See exactly how much you're paying in each time band with your current consumption pattern.
Scenario Comparison
Model multiple load-shifting scenarios and compare the savings potential of each.
Built on official published rates
FAQ
Answers, before you ask
DUoS charges vary by time of day. Red periods are peak times with highest rates (typically 4-7pm weekdays). Amber periods are shoulder times with moderate rates. Green periods are off-peak with the lowest rates (typically overnight and weekends). Exact times vary by DNO region.
Still curious? Email [email protected]
Quantify the value of every load-shift decision.
Red-band rates can be 100x higher than Green. See the annual saving in seconds, using published DNO rates.