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Procurement & Switching

Energy Tender UK: What It Is and How to Run One

Johnny Arthur · · Updated 7 July 2026

Hands of business people discussing a contract at a meeting table.

Energy Tender: What It Is, How It Works, and Why UK Businesses Should Use It

Quick Answer: An energy tender is a procurement process in which your business energy supply is put out to competitive bid across multiple suppliers at the same time. Rather than negotiating with one supplier at a time, tendering creates a competitive market for your contract — driving down prices and surfacing the best available deal. Telnergy tenders across 21+ UK suppliers and delivers results within 24 hours, with our fee agreed upfront.

Why Most Businesses Are Getting Their Energy Procurement Wrong

If you are renewing your business energy contract the way most UK companies do — either accepting a renewal offer from your existing supplier, or calling two or three suppliers to compare prices — you are almost certainly not getting the best deal available to you.

The UK business energy market is more fragmented and competitive than most people realise. There are over 30 active business energy suppliers in the UK, ranging from the Big Six to lean, specialist providers who compete aggressively on price to win mid-market commercial customers.1 But accessing this competition requires running a proper tender process — and most businesses lack the time, contacts, or market intelligence to do it effectively on their own.

According to Ofgem, UK businesses collectively overspend billions of pounds per year on energy by failing to switch or negotiate effectively.2 The gap between the cheapest available contract and a typical auto-renewal can easily be 20–40% on the unit rate alone.

This guide explains how a proper business energy tender works, why it consistently outperforms the alternatives, and how Telnergy runs the process on your behalf.

What Is an Energy Tender?

An energy tender — sometimes called an Invitation to Tender (ITT) — is a structured procurement process in which a business formally invites multiple energy suppliers to compete for its supply contract.

The process mirrors tendering in other procurement contexts: a specification is drawn up (your consumption data, contract requirements, and key terms), that specification is sent to multiple potential suppliers simultaneously, and those suppliers return competitive bids by a set deadline. The buyer then evaluates the bids and selects the best offer.

In the energy context, the specification typically includes:

  • Your meter reference numbers (MPAN for electricity, MPRN for gas)
  • Half-hourly or non-half-hourly consumption data (usually 12 months)
  • Your preferred contract length (commonly 12, 24, or 36 months)
  • Any specific requirements — green tariffs, fixed vs flexible pricing, multi-site structures

The result is a set of directly comparable quotes from multiple suppliers, obtained simultaneously under competitive conditions. This is fundamentally different from calling suppliers one at a time, where each supplier knows it is your only current conversation and has no incentive to price aggressively.

Why Tendering Beats the Alternatives

vs. Accepting an Auto-Renewal

When your existing energy contract expires, most suppliers will automatically roll you onto a new contract — often at a significantly higher rate than your original deal, and frequently without explicitly alerting you. Out-of-contract (deemed) rates can be 30–80% higher than a competitively tendered rate.3

Auto-renewals are, in effect, the supplier’s preferred outcome. They have no reason to offer you a competitive price if you are not actively shopping around.

A tender breaks this cycle entirely. It signals to the market that your contract is genuinely available and forces suppliers to compete on price.

vs. Calling Suppliers Directly

Calling suppliers individually to obtain quotes is time-consuming and structurally inefficient. Each supplier you approach knows roughly when you are making contact and in what sequence — and can price accordingly. You also need to negotiate separately with each supplier, using information you do not have (namely, what everyone else has quoted).

A tender resolves this by presenting all suppliers with the same information at the same time, creating a true auction dynamic.

vs. Using a Single-Supplier Broker

Some brokers in the market have preferred supplier relationships or panel arrangements that limit the range of suppliers they access. A broker with a commercial incentive tied to a specific supplier may not present you with the full picture.

Telnergy is fully independent. We tender across 21+ suppliers, declare all commissions under Ofgem’s October 2024 disclosure rules, and have no preferred supplier arrangement that could influence our recommendations.4 Our obligation is to you.

How Telnergy’s Energy Tender Process Works

Step 1: Initial Consultation (30 Minutes)

We start with a short conversation to understand your business, your consumption profile, your current contract situation, and any specific requirements you have. You will need to share recent bills and, ideally, a Letter of Authority that allows us to request consumption data directly from your supplier.

No commitment is required at this stage.

Step 2: Consumption Data Gathering

We pull your half-hourly or monthly consumption data, verify meter details, and build the tender specification. For multi-site businesses, we consolidate data across all meters to create a package that may attract better pricing than individual-site tendering.

Step 3: Simultaneous Tender Across 21+ Suppliers

We send the tender specification to our full panel of 21+ suppliers at the same time. This creates genuine competition — every supplier knows they are bidding against a field of comparable providers.

Our supplier panel spans the full range of the UK business energy market: major integrated suppliers, independent generators, green energy specialists, and value-oriented challengers. By accessing the entire market rather than a subset of it, we maximise the competitive pressure on pricing.

Step 4: Results Within 24 Hours

We typically receive quotes back within 24 hours for standard commercial contracts. We then evaluate the quotes across a range of factors: unit rate, standing charge, contract flexibility, green credentials, and supplier financial stability.

We present you with a clear comparison — not a raw data dump, but a structured recommendation with reasoning.

Step 5: Contract Placement and Handover

Once you select a preferred supplier, we handle the contract paperwork, notify your existing supplier, and manage the switchover process. We confirm all details in writing to both parties and provide you with a contract summary document.

Step 6: Ongoing Account Management

Your relationship with Telnergy does not end at contract placement. We monitor your contract throughout its term, alert you when your renewal window opens, and flag any billing discrepancies. When your contract is due for renewal, we run the tender process again — ensuring you always benefit from competitive pricing.

The Invitation to Tender (ITT) Explained

The ITT is the formal document at the heart of the tender process. For business energy, it does not need to be a lengthy procurement document — but it does need to contain the right information to enable suppliers to price accurately and competitively.

A well-constructed energy ITT typically includes:

Consumption profile: Your actual energy use, ideally broken down by month and — for electricity — by half-hour period. This allows suppliers to model your demand accurately, which directly affects their pricing. A supplier quoting without interval data is estimating your profile — which typically produces a less competitive or less accurate quote, so if you do not hold half-hourly data, request it from your current supplier before approaching the market.

Meter details: MPAN (electricity) and MPRN (gas) references, plus meter type (credit, smart, half-hourly profile class).

Contract parameters: Desired start date (allowing for the notice period on your current contract), contract duration, and any requirements around flexible or fixed pricing. As a rule of thumb, a fixed all-inclusive contract is appropriate for most SMEs below around 500,000 kWh of annual electricity consumption; above that threshold, pass-through structures warrant evaluation.

Special requirements: If you want a verified renewable energy contract, a dual fuel deal, or specific billing arrangements, these go into the ITT.

Evaluation criteria: What factors matter most to you — lowest unit rate, supplier reputation, green credentials, payment terms. This helps suppliers tailor their bids.

Telnergy handles the entire ITT construction process. You do not need to know what an MPAN is — we gather the data, build the specification, and manage the supplier relationships.

How to Evaluate the Quotes

When quotes arrive, the evaluation should never rest on unit rate alone. A complete like-for-like comparison covers:

  • Unit rate (p/kWh) — the primary cost driver at higher consumption
  • Standing charge (p/day) — proportionally more significant at lower consumption
  • Total annual cost — unit rate × annual consumption + standing charge × 365
  • Contract structure — all-inclusive fixed vs pass-through
  • Contract length — is the quoted term the same across all quotes?
  • Supplier financial robustness — are you confident this supplier will remain solvent for the contract duration?
  • Commission — disclosed and comparable across quotes

The first round of quotes is not necessarily the best available. Once you have a competitive field, there is often scope to negotiate — presenting the most competitive quote to the second-placed supplier and inviting a final offer. In a genuinely competitive tender, this final round frequently produces a further improvement.

Can You Tender Directly, Without a Consultant?

Yes — a direct tender is entirely feasible for businesses with the time and commercial appetite to manage multiple supplier conversations simultaneously. The practical constraints are worth understanding first:

  • Not all non-domestic suppliers quote directly to businesses — some operate exclusively through the intermediary channel
  • Managing a dozen or more simultaneous supplier conversations requires time and administrative discipline
  • Evaluating quotes on a like-for-like basis requires familiarity with contract structures and non-commodity charges
  • The switch transition needs managing correctly, including notice to the outgoing supplier within the notification window

If you do run the process yourself, record the agreed start date, end date, unit rate, standing charge, and any auto-renewal terms in a contract register, and set a reminder for six months before expiry. A consultant-managed tender accesses a wider market, handles the comparison and transition, and tracks renewal dates for future cycles.

How Often Should You Tender?

At every renewal cycle, without exception. A business on 12-month contracts should tender annually; on 24-month contracts, every two years with a market benchmarking exercise at the midpoint to check the contracted rate remains competitive.

The businesses that consistently pay the lowest energy costs are those that treat every renewal as a procurement opportunity. The businesses that consistently overpay are those that treat it as an administrative exercise.

Who Should Use an Energy Tender?

Tendering delivers the greatest returns for businesses that:

  • Spend more than £5,000 per year on energy. At this level, even a 10% saving more than justifies the time investment in a proper tender.
  • Have contracts coming up for renewal in the next 3–12 months. The optimal window to begin a tender is 6–9 months before your contract end date, when the forward market gives you maximum flexibility.
  • Have multiple sites. Multi-site tendering can achieve better rates by presenting suppliers with a larger, consolidated volume opportunity.
  • Have been on the same contract for more than 2 years. The longer you have been with the same supplier without tendering, the greater the likely savings.

Telnergy has clients across retail, hospitality, healthcare, education, and manufacturing. A 14-site restaurant group we work with saved £14,000 per year on gas through a structured tender process. A hotel client saved £6,435 per year. A school saved £8,200 per year. These are not exceptional results — they are what consistent, disciplined tendering produces.

How Much Does an Energy Tender Cost?

Telnergy’s fee is agreed with you upfront. Most clients choose to have it paid via the supplier we place the contract with, as a commission embedded in the tariff — though you can pay it directly if you prefer. Under Ofgem’s October 2024 rules, we are required to disclose this commission to you at the point of recommendation — so you always know exactly how we are paid.4

Our fee is agreed upfront and disclosed in writing. It can be paid directly, or funded by the supplier from within the tariff structure — and it does not increase your energy costs above what you would pay going direct — in fact, because we drive competitive pricing through the tender process, you almost always pay less than you would negotiating alone.

Search interest in “energy tender” increased by 41% in the 12 months to April 2026. Several factors are driving this:

Sustained energy price volatility. The post-2022 energy crisis normalised active procurement management for UK businesses. Companies that previously auto-renewed are now asking questions about whether they are getting the best price.5

Regulatory reform. Ofgem’s TPI disclosure rules and the Labour government’s announcement of full TPI regulation in July 2025 have increased awareness of energy broker practices — and prompted businesses to ask more questions about how their contracts are sourced.6

Net zero commitments. As businesses take on net zero targets, they are reviewing their energy procurement to understand their Scope 2 emissions footprint — and a tender is increasingly the moment at which green contract options are evaluated. See our guide: Net Zero Business Energy.

Frequently Asked Questions

Q: How does business energy tendering work in the UK?

It involves creating a formal specification of your energy requirements and sending it to multiple suppliers simultaneously. Suppliers compete by submitting their best pricing. Telnergy manages the process across 21+ suppliers — results in 24 hours, free to quote.

Q: How do I tender for business energy in the UK?

You need your MPAN and MPRN numbers, 12 months of consumption data, and a preferred contract length. Telnergy handles the entire process: data gathering, ITT, supplier engagement, and recommendation.

Q: What is an ITT in energy procurement?

An Invitation to Tender — the document containing your consumption data, meter details, and contract requirements sent to multiple suppliers to invite competitive bids.

Q: How many energy suppliers should I tender to?

More is generally better. Telnergy tenders to 21+ suppliers, covering the full UK business energy market.

Q: When is the best time to tender for business energy?

6–9 months before your contract end date. This gives you access to forward market pricing and enough time to switch before expiry.

Q: Is energy tendering free for businesses?

Yes, when working with Telnergy. We are paid by commission from the winning supplier, which we disclose under Ofgem’s 2024 rules.

Q: Can I tender for energy if I have multiple sites?

Yes — multi-site tendering often achieves better results by presenting a larger volume opportunity to suppliers.

Ready to Run Your Energy Tender?

The process takes less time than you might think. A 30-minute initial consultation is all we need to get started. We will have quotes from 21+ suppliers on your desk within 24 hours.

Get a free energy tender quote from Telnergy — no obligation to proceed.

References

Footnotes

  1. Ofgem, Retail market monitoring update, 2025. ↩

  2. Ofgem, Business energy market review, 2024. ↩

  3. Cornwall Insight, Out-of-contract rate analysis for non-domestic customers, 2024. ↩

  4. Ofgem, Third Party Intermediary (TPI) disclosure rules, October 2024. ↩ ↩2

  5. BEIS, Business energy consumption statistics, 2025. ↩

  6. Department for Energy Security and Net Zero, TPI regulation announcement, July 2025. ↩

Telnergy Limited is an independent commercial energy consultancy established in 2002, based in Christchurch, Dorset. Ofgem registered TPI · ADR Ref E3561 · CRN 04576876.