Release Notes

POST /api/v1/calculate now prices all of Profile Classes 00 to 08. The maximum-demand classes 05 to 08 and half-hourly Profile Class 00 join the domestic and non-domestic classes already covered, so a single endpoint prices supplies from a domestic meter through to a large maximum-demand connection. Every charge still returns as its own priced line, from CDCM DUoS through to the policy levies, computed from published rates.

You can now send a supply's half-hourly metered consumption and have each charge priced from the actual load rather than an estimated profile split. Annual totals and day-and-night register totals are still accepted, and the response states which basis each figure was priced on.

Maximum-demand supplies are priced from their agreed capacity in kVA, including the capacity charge, an exceeded-capacity charge where measured demand runs above the agreed level, and reactive power charges. The Capacity Market levy is included for these sites.

Supplies on an independent distribution network (IDNO) can now be priced by giving the host network location. The endpoint returns the charges the site pays through its host DNO's published rates, the same mirror the rest of the platform uses.

When a supply, charge, consumption format or period sits outside what the endpoint prices today, or the published rates for a year are not yet available, the API returns a clear reason and no priced figure. A partial result is never handed back as if it were a total.

Query the rates behind GB network charges over the API. A demand or generation MPAN returns the full non-commodity rate card: CDCM DUoS, TNUoS, BSUoS, CCL, CfD, Capacity Market, AAHEDC and Nuclear RAB. A gas MPRN returns the LDZ transportation rate card: ZCA, ZCO, CCA, ECN, CFI and SOLR. Standalone endpoints return any of these on their own, alongside reference data for DNOs, LLFCs and settlement configuration. The API returns published rates, not calculated costs, so each figure matches the DNO, GDN or levy body's own published statement.

A new By region tab alongside the classic By MPAN lookup. Choose a DNO region, then the demand or generation cohort (never blended), then a charging year, and see the spread of Super Red, capacity and fixed charges across the sites we hold, shown as a median with the full observed range. The list shows each site's operator or asset name where held, so you know what you are opening, and any site opens to its complete site-specific EDCM rate card.

The Connection Options Advisor can now compare an EDCM distribution connection against a direct-to-transmission connection on large EHV sites. The add-on appears at 30,000 kVA and above, defaults on, and can be switched off, with results framed against the EHV distribution baseline.

A peak-time (Super Red) charge toggle on the EHV connection form defaults on or off from how common the charge is across that region's EDCM sites, shows the regional percentage, and stays user-overridable. When off, the Super Red component is zeroed in the estimate while fixed and capacity are unaffected.

The what-if sliders showed inflated current and target annual costs because the daily fixed charge was added at the wrong scale. The £ figures beside the sliders and the savings percentage are now correct. Server-side calculations were never affected.

When Nuclear RAB is selected in Validate Past Charges, the levy is now included in the combined total returned by the calculation API and in saved calculation summaries, matching what the results screen already showed. Billing periods before the levy started in December 2025 are correctly left without a Nuclear RAB line.

Decoding an MPAN now shows its TNUoS zone and connection voltage. Enter the Maximum Import Capacity from the bill and the tool resolves the published TDR capacity band and an indicative transmission demand residual in pounds per day. Neutral facts, no verdict.

EHV lookups now show the site operator, connection type, voltage level, an indicative capacity, and address where available, drawn from public network registers and Companies House. An Assumptions and Methodology panel sets out every source and how confident each match is.

Site identity now extends to independently-connected (IDNO) EHV sites, not just the 14 DNO regions.

A signed-out manual EHV lookup now correctly shows the sign-in prompt instead of appearing to do nothing.

A deterministic, bottom-up tariff builder. Dedicated long-form product page at /pricing-engine with full methodology, FAQ and audience use cases.

Overview (14-region price grid), Breakdown (full cost cascade), Profile Class (compare PC variants side by side), and Unit rate (the tariff sheet you can hand to a pricing manager).

Contract length slider with date pickers, VAT toggle, Annual vs Contract view, Custom kWh override (replaces the Ofgem TDCV default), an Other Costs drawer for bespoke rows, and an Assumptions drawer for the commercial layer (margin, hedging, shape, imbalance).

PC01 single-rate, PC02 Economy 7 (day / night), and PC02 Economy 10 (off-peak windows). Each profile class carries its own sourced time-of-use shape.

Default Overview lays every region next to every other. Click any region to focus the rest of the workspace.

Now the first item in both the Consultant and In-house Electric task flows on /tools.

New flagship product band on the homepage between the bespoke-tools narrative and the final CTA. Existing "Platform." hero kept verbatim.

Pricing Engine surfaces on /for-enterprise as a dedicated section, and on /for-consultancies as a flagship strip above the workflow cards.

Pricing Engine sits above the Standard tools bundle as its own product card. Talk to us about access.

Two new entries on /learn covering what Pricing Engine is and how the cost stack is layered.

Expand the DUoS row in either forecast tool to see Consumption (Red/Amber/Green unit rates) and Fixed/Capacity (standing + capacity charges) as their own lines, each with its individual year-on-year change.

Each MPAN in the Portfolio Forecast now displays its TDR band (Band 1–4) inline with the meter name, so you can compare residual bands at a glance without expanding into TNUoS detail.

Removed the duplicated year labels from every row. Each charge section now shows a single column header (current year / forecast year / change) over neatly aligned value columns.

Self-tuning fallback for the D0018 consumption coefficient means non-half-hourly forecasts for years beyond the published horizon now produce results where they previously failed.

When DUoS or CCL rates aren’t yet published for a future year, the forecast now applies a flat-carry from the latest available year and the Assumptions & Methodology panel makes that provenance explicit.

New calculator mode to analyse whether your agreed capacity (MIC) is oversized. Enter your MPAN or manually specify voltage level, MIC, and maximum demand to see if you could save by moving to a lower TDR band.

Toggle between annual view and 3-year total to see cumulative savings opportunity. Year-by-year breakdown accordion shows exactly how costs compare each charging year.

Get a recommended MIC value that maintains a safe margin above your peak demand while moving you to the optimal TDR band.

For EHV sites, see warnings about threshold changes in April 2026 that could affect your band - helping you plan ahead for RIIO-3.

New calculator mode for energy consultancies to model DUoS savings from load shifting. Enter your MPAN and consumption, then use interactive sliders to explore how moving demand between Red, Amber, and Green time bands affects your annual costs.

Intuitive R/A/G sliders that maintain 100% total consumption. Reduce Red and the reduction cascades to Amber; reduce Amber and it flows to Green. See your potential savings update in real-time as you drag.

Don't know your R/A/G split? Enter your total annual consumption and we'll estimate the split using D0018 profile coefficients for your meter's profile class, or time band hours for half-hourly meters.

Clear before/after comparison showing baseline costs vs shifted costs. See exactly how much you could save per year by optimising when you use electricity.

Enter a generation MPAN and the calculator automatically detects it from your LLFC. The interface adapts to show "Export kWh" instead of "Usage kWh" and displays DUoS credits (negative rates) with green styling.

All 8 CDCM generation tariff categories are now supported (LV_GEN_AGG, LVS_GEN_AGG, LV_GEN_SS, etc.). Generation tariffs have negative unit rates, meaning embedded generators receive credits for the electricity they export to the grid.

Embedded generators can calculate their EET credits by entering their Maximum Export Capacity (MEC). EET is a credit paid annually based on your connection capacity, calculated as MEC × EET rate × billing days.

Generation MPANs work in Budget Forecast mode too. See how your export credits will change year-over-year using published future rates.

TNUoS capacity inputs (MIC, voltage level) now only appear for half-hourly customers who need them. Non-half-hourly customers (Profile Classes 01-04) no longer see these fields since their TDR band is determined automatically from annual consumption.

Non-half-hourly demand calculations now complete in ~4.5 seconds, down from 30+ seconds. Fixed an N+1 query issue with BST transition lookups.

The Customise Test MPAN modal now includes a Demand/Generation toggle. Select "Generation" to generate test MPANs for export meters, making it easier to explore how embedded generation credits work.

Budget Forecast now correctly includes negative charges (credits) in the year-over-year comparison summary.

Predict future electricity costs using rates published 12-18 months in advance. Compare current vs future charges side-by-side for DUoS, TNUoS, BSUoS, CCL, CfD, and Capacity Market.

CCL is now available alongside DUoS, TNUoS, BSUoS, CfD, and Capacity Market charges for non-domestic customers.

Cleaner interface when your billing period crosses April 1st, with better mobile layout and consistent design across both calculator modes.

New segmented S-Box Grid layout that mirrors how meter numbers appear on bills. Each segment (PC, MTC, LLFC, DNO, Unique ID, Check digits) has its own input field with color-coding for easier data entry. You can now edit individual segments without retyping the whole MPAN.

Fixed cold start delays that could cause slow responses, especially first thing in the morning. The calculator now responds faster.

Calculation result emails now display correctly in Outlook desktop, with proper header styling.

Fixed an issue where billing periods spanning two charging years (e.g., March to April) would show a validation error even when all consumption data was entered correctly.

The "Generate Test MPAN" button now works reliably every time. Previously, random generation could intermittently fail with no feedback to the user. The generator now uses pre-validated meter configurations, and the warming system has been hardened to prevent cascading failures.

Fixed recognition of MPANs where LLFC codes appear without leading zeros on bills (e.g., "1" instead of "001"). The calculator now automatically pads these codes correctly when you paste 19-20 digit MPANs. Visual feedback shows when auto-padding has been applied.

A comprehensive knowledge hub covering everything from meter numbers (MPAN) to network charges (DUoS, TNUoS, BSUoS) to industry reforms (MHHS, TCR, CDCM). Essential reference for TPIs and energy professionals.

Instantly search all glossary terms from the Learn page. Press Cmd+K (Mac) or Ctrl+K (Windows/Linux) to open the search palette and find definitions in seconds.

Share links to specific terms using hash URLs (e.g., /learn#mpan or /learn#duos). Perfect for documentation, training materials, or answering client questions.

The MPAN decoder now correctly displays "SSC (Standard Settlement Configuration)" for MHHS-format MPANs, ensuring accurate terminology for energy professionals.

The calculator now clearly asks for all 21 or 22 digits from your electricity bill, with a help icon explaining where to find both rows of numbers in the "S" box. This prevents incomplete MPANs being entered (the 13-digit "Supply Number" alone is not enough to determine your tariff).

Fixed an issue with MPAN validation to ensure all valid meter numbers are correctly accepted.

MPANs with alphanumeric characters in the LLFC position (e.g., A01, P80, N35) are now correctly accepted.

Previously, charges you had deselected (like TNUoS or BSUoS) would still appear in your calculation results and email summaries. Now, only the charges you select are calculated and included in your results and emails.

The calculator now automatically hides input fields for charges you haven't selected. For example, if you deselect TNUoS, the "Triad Demand" field will no longer appear, creating a cleaner and more focused form.

Penalty charges when maximum demand exceeds your agreed capacity are now displayed in the DUoS breakdown, helping you identify unexpected capacity-related costs.

Charges for poor power factor are now displayed in the DUoS breakdown, giving you visibility into power quality penalties.

Removed the visual step indicator to create a cleaner, more focused experience that works better across all devices.

Tap FROM or TO dates on mobile to jump directly to the right calendar month - making it faster to select billing periods on your phone or tablet.