Letter of Authority (LoA) for Business Energy: What It Is, How It Works & When You Need One Quick answer
A Letter of Authority (LoA) is a legal document that allows a third party (such as an energy broker, consultant, or supplier) to access information and act on behalf of your business energy account.
In the UK energy market, signing an LoA allows a broker to collect energy usage data, request quotes from suppliers, and arrange contract switches on your behalf, and while an LoA does not usually allow someone to sign contracts without your permission, it does give them limited authority to manage certain administrative tasks.
If you would like to read more information or learn more about the pricing of business energy, you can do so here .
Key Takeaways
A Letter of Authority (LoA) gives a third party permission to act on your business energy account.
It allows brokers to request quotes, retrieve usage data, and manage supplier communication.
Most energy suppliers require a valid LoA before speaking to a broker on your behalf.
LoAs typically remain valid for 6–12 months, depending on the agreement.
Signing an LoA does not usually give someone permission to sign contracts without approval.
Always ensure your LoA has clear permissions and an expiry date.
The UK energy market is overseen by Ofgem.
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Authored by: Ally Cox (Business Technology & B2B Services Specialist 10+ Years’ Experience)
Reviewed by: James Ward (Telecoms Specialist, 12+ Years Experience)
Last Updated: March 2026
Contents
Pros and Cons of a Letter of Authority
Importance of LOAs
Relevance to Energy Suppliers
Safety of Signing an LOA
Validity Period of an LOA
How to Write a Letter of Authority
What Is a Letter of Authority? A Letter of Authority (LoA) is a document that authorises a third party to access and manage certain aspects of your account, and in the business energy sector, LoAs are commonly used when working with:
energy brokers
procurement consultants
utility management companies
Once signed, the broker or consultant can contact energy suppliers to gather information and manage administrative tasks related to your energy account.
Major UK suppliers such as:
British Gas Business
EDF Energy
Octopus Energy
will typically require an LoA before discussing your account with third parties.
Pros and Cons of a Letter of Authority
Pros Cons
Speeds up switching energy suppliers
Can grant too much access if poorly written
Allows brokers to gather quotes quickly
Business data is shared with a third party
Simplifies supplier communication
Risk of misuse if given to an untrustworthy broker
Enables full energy account management
May remain active longer than expected without expiry
Importance of LOAs We have seen first hand how energy brokers play a major role in helping SMEs navigate complex tariffs, rising costs, and contract terms, but they can’t act on your behalf without a valid LoA .
An LoA gives your chosen provider the authority to:
📞 Contact your current supplier to retrieve contract or usage information
🧾 Request quotes from alternative suppliers
🔁 Handle your energy contract switch from start to finish
💼 Manage energy-related admin, billing queries, or disputes
It’s a legal safety net that makes sure no unauthorised activity occurs under your business name.
Relevance to Energy Suppliers Almost all commercial energy suppliers in the UK require a signed LoA before they’ll communicate with third parties acting on your behalf.
🔑 industries that rely on LoAs:
Business energy
Financial services
Property & estate management
Healthcare & insurance
Brokers such as Inenco, Bionic, and Love Energy Savings won’t proceed with a switch unless you’ve authorised them via LoA .
Safety of Signing an LOA Yes, LoAs are safe as long as you know what you’re signing and choose a reputable broker .
🛡️ our guidelines for signing an LOA securely:
✅ Read all terms and check which services the LoA permits
✅ Ensure it includes an expiry date
✅ Never sign a blank LoA
✅ Check the company’s reviews and credentials before authorising
✅ Retain a signed copy for your records
⚠️ Don’t give unrestricted access to your energy accounts unless you trust the provider fully.
Validity Period of an LOA Most LoAs are valid for 12 months unless otherwise stated.
📝 In some cases, especially when linked to a fixed energy contract, the LoA remains valid until the end of that contrac, so a lways check the document’s start and expiry date.
If your LoA expires, your broker or supplier will require a new one before continuing to act on your behalf!
How to Write a Letter of Authority If you’re asked to draft or complete an LoA for your business energy broker, make sure it includes:
✅ Your company letterhead
🎯 Pro tip from our experts : Most brokers provide a ready-made LoA template so make sure it aligns with your expectations before signing.
💡 Final Thoughts A Letter of Authority is an essential tool in the business energy world, offering convenience and flexibility, especially when you’re navigating the volatile UK energy market in 2026. While it comes with some risks, choosing a trusted partner and reading the fine print will protect your interests!
Read more here
FAQs 1. What is a Letter of Authority in business energy?
A Letter of Authority is a document that allows a broker or consultant to access your business energy account information and communicate with suppliers on your behalf.
2. Does an LoA allow someone to sign contracts for my business?
Usually no. Most LoAs only allow information access and administrative actions, not contract signing.
3. Why do energy brokers need a Letter of Authority?
Suppliers cannot share account information without permission. An LoA allows brokers to retrieve usage data and obtain quotes from suppliers.
4. How long does a Letter of Authority last?
Most LoAs remain valid for 6-12 months, though some may have shorter or longer validity periods depending on the agreement.
5. Can I cancel a Letter of Authority?
Yes. Businesses can usually withdraw or cancel an LoA by contacting the broker or supplier in writing.
6. Is signing an LoA risky?
It can be safe if you read the document carefully, check the permissions, and only work with reputable brokers.
7. Do all energy suppliers require an LoA?
Most suppliers require a signed LoA before discussing account details with third parties due to data protection and privacy rules.
Here is a Handy Video About What is a Letter of Authority or LoA
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Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.
