Power, As It Should Be? A Critical Examination of tem energy’s Claims

Tem energy, the Battersea-based startup backed by Atomico with $75 million raised, has signed up over 2,000 business customers on a promise that sounds almost too good to be true: up to 30% lower bills, total transparency, and a fundamental reinvention of how electricity changes hands. Their RED™ platform, their AI transaction infrastructure, their physical hedging market with Electron, and their championing of the P442 Exempt Supply framework have generated considerable press coverage and investor excitement.

But read tem’s own published content carefully — their homepage, their FAQ, their P442 articles for generators and business customers — and a very different picture emerges. One in which the company is not a licensed supplier, operates behind an unnamed regulatory partner, derives its headline savings from a mechanism it admits delivers single-digit percentage reductions, and has built an entire brand identity around transparency while leaving its most structurally important facts buried or absent entirely.

The foundation: tem is not a licensed energy supplier

Before examining any individual claim, one fact disclosed in tem’s own FAQ must be understood, because it reframes everything else. Asked directly whether tem holds a UK supply licence, their answer is unambiguous: tem does not hold a licence. Their explanation: they have chosen not to hold a licence because tem isn’t built to be another utility inside the old system. To stay compliant with UK regulations, they partner with an Ofgem-licensed supplier who manages requirements like meter registrations and compliance checks.

This is a significant disclosure. In the GB energy market, the licensed supplier is the entity with binding legal obligations to customers: billing standards under the supply licence conditions, mandatory complaint handling processes, access to the Energy Ombudsman, and Supplier of Last Resort (SoLR) protections. If a supplier fails, Ofgem appoints a SoLR to absorb the customer book. Those protections attach to the licensed entity — not to a technology platform sitting in front of it.

Tem’s customers are signing energy contracts, receiving bills, and managing their accounts entirely through the RED™ interface — which belongs to an unlicensed company. Their statutory protections under UK energy regulation sit with a licensed supply partner that tem has not named anywhere on its website. A company whose footer reads “nothing to hide” has chosen not to disclose who is actually responsible for its customers under UK law.

Claim 1: “We don’t buy power from the wholesale market”

Tem’s FAQ states plainly that they do not buy from the wholesale market. This is the most structurally important claim on their website — and the one hardest to reconcile with how GB licensed electricity supply actually functions.

Every licensed supplier in Great Britain must hold a position in the market and balance that position. Balancing — matching contracted supply to actual customer demand across each half-hourly settlement period — is a mandatory obligation under BETTA. When actual consumption differs from contracted supply, the difference is settled through the Balancing Mechanism at system prices, which are derived from the wholesale market. There is no licensed supply operation in GB that is entirely disconnected from the wholesale market, regardless of how the commercial layer above it is structured.

Tem’s unlicensed status is directly relevant here: it is their unnamed licensed supply partner that holds the balancing obligation, not tem itself. Tem can technically say that tem the company does not buy from the wholesale market — because tem is not licensed to do so. But the partner behind them does. The claim as presented to customers implies a structural bypass of the wholesale market that simply does not exist.

Claim 2: “We’ve reinvented how energy is bought and sold”

This headline claim is tem’s most sweeping. The fundamental architecture of GB electricity supply has not changed: tem’s licensed partner operates within the same market framework as Octopus, EDF, British Gas, and every other licensed supplier. Electrons reach customers through the same National Grid infrastructure. The same mandatory network charges, levies, and balancing costs ultimately apply.

What tem has built is a more automated and transparent commercial layer sitting in front of a conventional licensed supply operation. That has genuine value. But it is categorically not a reinvention of how energy is bought and sold at a market level. The innovation is in the technology and compliance layer, not in the underlying market architecture.

Claim 3: “Cutting out middlemen” — but tem is unlicensed

The middleman claim contains a genuine kernel of truth but is structurally inverted. In the traditional business energy market, brokers commonly embed undisclosed commissions of 1–3p/kWh into unit rates. Tem’s direct sales model can legitimately remove that commission for customers who come direct — a real and meaningful saving in a market where broker opacity has been a persistent problem.

However, the model also introduces a new layer rather than simply removing one. The supply chain is: wholesale market → unnamed licensed supplier → tem (unlicensed platform) → customer. A standard arrangement is: wholesale market → licensed supplier → customer (often via broker). Tem has replaced the broker with itself and added an unlicensed intermediary that takes its own margin, is not regulated by Ofgem as a supplier, and whose financial obligations to customers are indirect rather than direct.

Tem has not removed a middleman. It has replaced one type of intermediary with another, while adding a layer of structural opacity around which entity actually holds regulatory responsibility for its customers.

Claim 4: The real savings mechanism — P442 Exempt Supply

Tem’s own published P442 articles confirm what their homepage does not make explicit: the primary structural savings mechanism is Exempt Supply under the P442 framework, not wholesale market disruption or AI infrastructure.

Exempt Supply connects eligible renewable generators to eligible business consumers. When a valid match is established through the ESNA process, some non-commodity costs are removed from the matched portion of that customer’s consumption. The generator-consumer pairing creates the saving. Tem’s platform automates and scales the matching and compliance process — genuinely useful work that has made P442 accessible to SMEs for the first time at scale.

But their P442 for Partners article states clearly that the mechanism typically saves a single-digit percentage of your total bill. Their homepage claims savings of around 30%. These two statements appear on the same website and cannot both be true.

Claim 5: The socialisation problem

The non-commodity costs that P442 removes from eligible customers’ bills do not disappear. They are socialised costs that fund the Renewables Obligation, Contracts for Difference, the Capacity Market, and network infrastructure that the entire GB electricity system depends upon. When a customer is exempted from their proportionate share, that share is redistributed across all remaining licensed supply customers — other businesses and households not in an Exempt Supply arrangement.

The 2.5 MWh cap per half-hourly settlement period exists precisely to limit this redistribution effect. Tem is actively encouraging brokers, partners, and generators to scale P442 as widely as possible, describing it as “a huge industry change.” As their customer base grows, the redistribution effect grows proportionally.

Claim 6: “So, is this just exempt supply? No.”

When customers ask directly in the FAQ whether RED™ is essentially an Exempt Supply product, tem answers no — then redirects to technology narrative. But their own P442 technical articles establish that Exempt Supply is the primary structural savings mechanism. The intelligent pricing engine is the automation layer that makes Exempt Supply operable at scale — not a separate source of bill reduction.

Claim 7: “The UK’s first physical-hedging market”

Tem and Electron’s announcement describes their arrangement as “the UK’s first physical-hedging market.” This claim does not survive scrutiny from anyone with energy trading experience.

Grid Trade Master Agreements (GTMAs) have provided the standard bilateral legal framework for physical forward electricity trading in GB for decades. Under a GTMA, two counterparties commit to actual delivery of electricity at a future date and price — this is, definitionally, physical hedging. The UK Capacity Market pays batteries reservation fees for committed capacity availability — structurally identical to what tem describes. Batteries have participated in the Capacity Market since it opened to storage.

What tem and Electron have built is a bilateral, automated version of existing mechanisms. The “UK’s first” framing is simply false.

Claim 8: RED™ is trademarked

Tem uses RED™ throughout their website — the ™ symbol, not ®. The ™ designation is self-assigned and requires no registration or formal process. The ® symbol indicates a mark formally registered with the Intellectual Property Office, carrying enforceable legal rights. There is no publicly available evidence that “RED” is a registered trademark held by tem. A common colour term used across numerous energy businesses would face substantial hurdles under section 3(1)(b) of the Trade Marks Act 1994.

Where tem deserves genuine credit

Critical scrutiny of marketing overstatement must not obscure what tem has genuinely accomplished.

The automation of Exempt Supply at scale is a legitimate technical achievement. Before P442, the process was manual and fragile. Tem processed over 70 applications simultaneously — more than any previous market participant — building the compliance infrastructure around ESNA verification, matching, cap monitoring, and scheme hygiene that makes P442 accessible to SMEs for the first time.

Their itemised billing is a meaningful improvement over market standard. Traditional business energy bills bundle commodity and non-commodity costs into opaque unit rates. Breaking these out line by line makes it far harder for any supplier to hide margin.

Half-hourly actual-data settlement eliminates large true-up adjustments and accurately reflects consumption patterns. And the direct distribution model removes embedded broker commission — a real saving in a market where broker opacity has been persistent and well-documented.

The Bulb parallel

No critical analysis of a VC-backed UK energy disruptor can avoid the cautionary tale of Bulb Energy. Bulb grew rapidly on competitive pricing and a clean-energy narrative, reached 1.7 million customers, and collapsed in late 2021 as wholesale gas prices spiked — costing the taxpayer an estimated £3 billion. Bulb’s failure was substantially a hedging failure.

Tem’s physical hedging model with Electron is, in part, a direct architectural response to this failure mode. The intent is well-founded. But the parallel cuts deeper in one respect specific to tem’s unlicensed structure. Bulb’s customers were protected by the SoLR process because Bulb was the licensed supplier. Tem’s customers in a comparable scenario would depend entirely on their unnamed licensed supply partner’s financial resilience — an entity most customers do not even know exists.

Conclusion

Tem energy has built something real: an automated, well-designed platform that scales Exempt Supply under P442, removes broker commission, and delivers more transparent billing than most of the business energy market manages. For an SME on an out-of-contract rate, switching to tem may well deliver meaningful savings.

But the company has constructed an elaborate narrative of wholesale market bypass and systemic reinvention that does not survive contact with its own published disclosures. Tem is not a licensed supplier. Their licensed partner is unnamed. They do not bypass the wholesale market. Their 30% savings headline is contradicted by their own P442 documentation. And their direct answer to “is this just exempt supply?” is factually wrong according to their own technical content published elsewhere on the same website.

The deepest irony is this: tem’s brand is built entirely on transparency. “Nothing to hide” appears in the footer of every page. Yet the most consequential facts about the product — that tem is not the licensed supplier, that the savings mechanism is primarily regulatory cost shifting, that the licensed partner is unnamed, and that those savings come partly at the expense of other market participants — appear nowhere in tem’s customer-facing material.

A genuinely transparent company would put those facts front and centre and let customers decide. The gap between that standard and what tem actually publishes is, in the end, the most revealing thing about them.

Sources: tem.energy homepage; tem FAQ page; tem P442 for Generators article; tem P442 for Partners and Business Customers article; tem/Electron physical hedging announcement; Atomico Series B announcement. All claims attributed to tem are drawn directly from their published website content, accessed March 2026.