Looking to buy or sell energy? Check out Tally Energy, our retail brand.

The platform powering the next generation of energy companies

The licensed, API-first layer between energy products and the consumer.

Put your tariff on the meter in weeks, under your brand. We run supply, settlement and compliance underneath.

The solution

TrueSource is the licensed, API-first supply layer

01

White-label energy supply

Partners launch consumer energy products in weeks instead of 12–24 months.

02

Partners keep the upside

The customer relationship and the product margin stay with you.

03

We handle the regulated last mile

We hold the licence obligations and run settlement, balancing, billing, compliance, risk and customer operations.

Product companyOwns the brand, the customer and the product margin
your tariff →
truesource
One API, backed by a regulated supply entity
← settlement, billing, compliance
Consumer’s meterHome or business, under the partner’s brand
What you inherit

Everything a licensed supplier runs, behind one API

We run settlement, billing and the industry data flows a supplier needs, ready for half-hourly settlement.

  • Supply

    Licensed market access and supplier-of-record obligations, handled under our arrangement with a UK licensed supplier.

  • Settlement

    Half-hourly settlement with Elexon (the Balancing and Settlement Code administrator), reconciled on a double-entry ledger.

  • Billing

    Consumer bills under your brand, with network and policy pass-through charges itemised to six decimal places.

  • Compliance

    Ofgem (the energy regulator) licence conditions, industry code obligations and regulatory reporting.

  • Risk and hedging

    Wholesale hedging, position management and credit collateral, so imbalance never lands on your balance sheet.

  • Customer operations

    Contact centre, Ombudsman compliance and debt processes, run by us behind your brand’s front door.

  • Market data flows

    Registration, switching and smart-meter data flows through the retail and smart-metering systems.

Build or buy

The alternative is becoming a licensed supplier yourself

A tariff looks like a simple consumer product. Behind it sits a regulated business.

  1. 01

    Regulatory and licensing

    Ofgem licence, capital adequacy, compliance audits, regulatory reporting

  2. 02

    Market interaction

    Elexon settlement, industry data flows, smart-meter connectivity, balancing

  3. 03

    Procurement and systems

    Billing platforms and market messaging: expensive to buy, slow to integrate

  4. 04

    Risk management

    Wholesale hedging, credit collateral, customer debt and price-cap exposure

  5. 05

    Customer operations

    Contact centres, billing operations, Ombudsman compliance, debt collection

12–24 months and £1m+

to build a regulated supplier, before the first 10,000 customers

Ofgem capital target: £115 per dual-fuel customer, 2025

All of that overhead delivers one consumer product. Inherit it from us instead and it stays our problem, not a second business you have to run.

How it is built

Our own retail brand already runs on it

  • Tally Energy runs on TrueSource

    Our own peer-to-peer retail brand supplies customers on the same API partners integrate. Every feature reaches Tally before it reaches anyone else.

  • Licensed market access

    Through our partnership with a UK licensed supplier, on a pay-as-you-go basis.

  • A ledger that balances

    Every kWh and every penny is a double-entry transaction the database cannot get wrong. Half-hourly settlement, pass-through charges to six decimal places.

Getting started

From first call to first meter

We take on partners one at a time, so the first conversation is with the people who build it.

  1. 01

    Tell us about the product

    Name the product and the energy question inside it. We come back with how it runs on TrueSource and what the tariff looks like.

  2. 02

    Integrate once

    One API for accounts, tariffs, meters and settlement. Your product keeps its own front door; we sit behind it.

  3. 03

    Go live under your brand

    We register the supply and carry the supplier obligations. Your customers see your brand on the tariff and on the bill.

  4. 04

    Add markets on the same integration

    Each new territory is our licensing problem, not a second build.

Talk to us

Weeks from integration to live meters, against the 12–24 months a supply licence takes.

The future of fair energy

Consumers will stop buying energy. They’ll buy products with energy inside.

In ten years, consumers will buy heat, miles and comfort from brands they already trust, and each of those products will run on licensed supply infrastructure underneath. That is the layer we run today.