Build an energy tariff.From scratch.
The cost stack of a UK energy tariff, region by region. Bottom-up.
Six levers
Pull, slide, override. Then look again.
Six controls that change the tariff in real time. Every commercial choice is visible — none of them are hidden defaults.
Contract length
Slide month-by-month. Price re-amortises across the term.
VAT toggle
Inc / ex VAT, domestic (5%) and non-domestic (20%).
Annual vs Contract
Annual £ for comparison, total-over-contract for what the customer pays.
Custom kWh
Override Ofgem TDCV with your own annual kWh.
Other Costs drawer
Bespoke rows scoped by fuel, region, charge type.
Assumptions drawer
Ten commercial levers — hedging, shape, imbalance, margin. All overridable.
One workspace
Same tariff. Four views.
Region by region. Cost by cost. Unit rate, standing charge, contract length. Stack by stack, line by line.
The 14-region grid
Every DNO region side by side. Click any to drill in.
The cost cascade
Wholesale → network → policy → ops → margin → VAT. Every row sourced.
Per profile class
Domestic (PC01, PC02 E7/E10) and SME (PC03), each with its own time-of-use shape.
The tariff sheet
p/kWh, p/day, annual £. Export-ready output for pricing managers.
FAQ
Answers, before you ask.
Everything you would email us anyway.
What is Pricing Engine?
A bottom-up tariff builder: every cost row of a UK energy tariff, region by region, traced to a published source. Wholesale, network, policy, metering, ops, margin, VAT.
Who is it for?
Consultancies and TPIs validating supplier quotes, suppliers and aspiring suppliers needing the pricing layer of their stack, and analysts who want a transparent view inside a UK tariff.
Where does the data come from?
Every row traces to an official source — Elexon for wholesale, regulators and operators for network and policy rates. No aggregator estimates, no black boxes.
How accurate is it?
The deterministic layer (wholesale, network, policy) is extracted directly from official sources and follows CDCM where applicable. The commercial layer (margin, hedging) is yours to set in the Assumptions drawer.
What's next?
The remaining SME profile classes (PC05–08) and a fully sourced gas wholesale curve. Live today: domestic (PC01, PC02 Economy 7/10) and SME (PC03, PC04), with network charges across all 14 DNO and 4 GDN regions.
Still curious? Email [email protected] — we read every one.
Methodology
The deterministic cost stack.
Every cost row traces to a published source. No black boxes.
Wholesale Elec
Half-hourly day-ahead, per-PC shaped
DUoS
R/A/G time bands, 14 DNOs
TNUoS
Zonal across 14 GB demand zones
BSUoS
Half-yearly H1 / H2 rates
Capacity Market
Per-kWh GB capacity levy
CfD levy
Quarterly interim, LCCC
CCL
Annual, domestic exemption handled
Nuclear RAB
Monthly, live since Dec 2025
AAHEDC
GB-wide, northern Scotland support
Gas LDZ transportation
4 GDNs, 13 LDZs
Everything you need to be an energy supplier.
Except the bits you'd rather we didn't do.