Terms of service

1. About us and these Terms

1.1  These Terms and Conditions ("Terms") apply to the sale of products and services by Thunder Energy Services Ltd ("Thunder", "we", "us" or "our") through www.thunderenergy.co.uk (the "Website") and, where stated in the listing, through third-party platforms.

1.2  Thunder Energy Services Ltd is a company registered in England and Wales (Company No. 17015962). Registered office: Belle House, 1 Hudsons Place, London SW1V 1JT. VAT No. GB518641484. You can contact us by email at support@thunderenergy.co.uk or by WhatsApp on +44 7380 358474.

1.3  These Terms apply to you as a consumer unless we say otherwise. If you are buying for business purposes, or on behalf of a public body or other organisation, Section 17 also applies.

1.4  You must be at least 18 years old to place an order.

1.5  Please read these Terms before placing an order. The version of these Terms in force when you place your order applies to that order. We may update these Terms from time to time, but changes will only apply to orders placed after the updated version is published.

1.6  Your contract with us is made up of these Terms, your order confirmation, the product information shown on the product page at the time of your order, and our Refund & Returns Policy, Shipping Policy and Warranty Policy. Our Privacy Policy explains how we use your personal data.

2. Our products

2.1  Our kits are Thunder manufactured, as well as system designs, built from components we select from specialist manufacturers. The product page at the time of your order describes the components, specifications and contents you will receive.

2.2  Product images are for illustration. Colours, finishes and packaging may differ slightly from those shown.

2.3  Sizes, weights, capacities and other measurements are approximate. They may vary within the tolerances stated in the product documentation or, where none is stated, by up to 2%.

2.4  We may change the components or specifications of our products for future orders. Once we have accepted your order, we will only make changes that are minor, are needed to reflect changes in law or technical requirements, and do not affect the performance, safety or regulatory status of the product. If we need to make a more significant change, we will tell you before dispatch and you may cancel your order for a full refund.

2.5  All products are subject to availability. If a product you have ordered is unavailable, we will tell you by email and refund any payment you have made for it.

2.6  The solar panels supplied in our Bolt kits are large dual-glass panels, each measuring approximately 1762 x 1134 x 30 mm and weighing approximately 21 kg. Each panel must be carried, moved and installed by at least two people.

2.7  Generation and savings figures shown on our Website, including results from our savings calculator and our financial projections, are estimates based on the assumptions stated with them, such as location, panel orientation and tilt, and electricity tariff. They are not guaranteed. Actual generation and savings depend on your location, shading, weather, installation, energy use and tariff.

2.8  Unless we expressly state otherwise, our kits are not supplied as MCS-certified installations. Eligibility for export payments, such as the Smart Export Guarantee, depends on your energy supplier's requirements and is not guaranteed.

3. Placing an order

3.1  Our order process allows you to check and correct any errors before submitting your order.

3.2  After you submit your order, we will send you an email acknowledging that we have received it. This acknowledgement does not mean that your order has been accepted.

3.3  Our acceptance of your order takes place when we email you to confirm that it has been accepted or when we dispatch the products, whichever happens first. At that point a contract between you and us comes into existence.

3.4  If we cannot accept your order, for example because the product is out of stock, the delivery address is outside our delivery area or needs an additional delivery charge that was not shown at checkout (see clause 5.1), or there has been an error in the price or description, we will tell you and refund in full any payment you have made.

4. Prices and payment

4.1  Prices are shown in pounds sterling and include VAT at the applicable rate. Any delivery or other charges are shown before you pay.

4.2  The price you pay is the price shown when you place your order. Price changes do not affect orders we have already accepted.

4.3  Payment must be made in full when you place your order, using one of the payment methods shown at checkout. By submitting payment details, you confirm that you are authorised to use the payment method.

5. Delivery

5.1  Delivery areas and charges:

(a)     free standard delivery applies to addresses in mainland Great Britain, other than those in an Extended Delivery Area;

(b)     the Scottish Highlands and Islands, the Isles of Scilly and other offshore islands, the Isle of Man and the Channel Islands are Extended Delivery Areas. The postcodes they cover are listed in our Shipping Policy. We can deliver to these areas, but an additional delivery charge applies, which depends on the products ordered and the delivery address. If your address is in an Extended Delivery Area, please contact us at support@thunderenergy.co.uk before placing your order and we will give you a delivery quote;

(c)     if you place an order for delivery to an Extended Delivery Area without first agreeing the delivery charge with us, we will contact you with a delivery quote before accepting your order. You may either accept the quote and pay the additional charge, or cancel your order and receive a full refund. We will not take any additional delivery charge without your express agreement;

(d)     deliveries to the Isle of Man and the Channel Islands may be subject to local import duties, taxes or charges, which are your responsibility. See also clause 8.2(g); and

(e)     we do not deliver to Northern Ireland, to P.O. Boxes or to BFPO addresses.

5.2  Your order may arrive in more than one delivery, from different locations and on different days. For example, solar panels and kit accessories might be delivered separately.

5.3  Solar panels for our Bolt kits are delivered on a pallet by a specialist pallet carrier:

(a)     we will contact you to agree a delivery day. In some rural or remote areas we may not be able to guarantee a specific day;

(b)     the pallet is delivered kerbside, at ground level outside your property. The driver will not carry the panels into your property or garden;

(c)     a person aged 18 or over must be present to receive the delivery; and

(d)     you are responsible for moving the panels from the kerbside, which requires two people.

5.4  Battery products, including Vault and the battery supplied with our Plus kits, contain lithium cells and are delivered by a specialist carrier approved to transport them.

5.5  If a pallet delivery cannot be completed on the agreed day because nobody is present to receive it, or because the delivery address is inaccessible or was given incorrectly, a redelivery charge of £89.99 (including VAT) applies.

5.6  Delivery dates are estimates. Unless we agree otherwise, we will deliver within 30 days after we accept your order. If we do not, you may cancel your order and receive a full refund for any products not delivered. This does not apply where the delay is caused by you, for example if you do not agree a delivery day with us when asked.

5.7  The products are your responsibility from the time they come into the physical possession of you or a person you have nominated. You own the products once they have been delivered and we have received payment in full.

5.8  Please inspect your delivery on arrival. Where possible, note any visible damage on the carrier's delivery record and tell us within 3 business days. This helps us resolve any claim with the carrier quickly and does not affect your legal rights.

6. Your right to cancel

6.1  If you are a consumer, you have the legal right to cancel your order within 14 days without giving any reason. The cancellation period ends 14 days after the day on which you, or a person you nominate, receive the products. Where your order is delivered in more than one delivery, the period ends 14 days after the day on which you receive the last item.

6.2  To cancel, tell us clearly by email at support@thunderenergy.co.uk. You may use the model cancellation form in our Refund & Returns Policy, but you do not have to.

6.3  You must return the products to us within 14 days after telling us you wish to cancel, following the return instructions we send you.

6.4  Unless the products are faulty or not as described, you are responsible for the direct cost of returning them:

(a)     products that can be returned by parcel should be sent using a tracked and insured service. Estimated costs are shown in our Refund & Returns Policy;

(b)     products that cannot normally be returned by post must be returned as follows:

(i)      Bolt solar panels: you may arrange collection yourself by a suitable pallet carrier, with the panels securely packed and insured, or ask us to arrange collection; and

(ii)     battery products, including Vault and the battery supplied with our Plus kits: these contain lithium cells and are classed as dangerous goods for transport, so they must be returned by a carrier approved to transport lithium batteries. You may arrange this yourself or ask us to arrange collection.

(c)     where we arrange a collection, we charge £89.99 (including VAT) for each collection and deduct it from your refund. Orders that include both solar panels and a battery may need separate collections. If you cancel after a pallet or battery delivery has been dispatched and it is returned to us, the same charge applies to that return.

6.5  We will refund all payments received from you, including any standard delivery charge you paid, less any deduction permitted under clauses 6.4(c) and 6.6. We will refund you within 14 days after we receive the products back or, if earlier, after you provide evidence that you have sent them. If we have arranged collection, we will refund you within 14 days after you tell us you wish to cancel. We will use the payment method you used for the order.

6.6  You may handle the products as you would in a shop to establish their nature, characteristics and functioning. If you handle or use them beyond that, for example by mounting, installing, connecting or operating them, or by exposing solar panels to outdoor conditions, we may reduce your refund to reflect any reduction in their value. Where a product can no longer be sold as new, the reduction may be up to its full price. Where any part is missing or damaged, the reduction will reflect the cost of replacing it. We will explain any reduction and show you the evidence it is based on. If we have already refunded you, you will be liable to pay us the amount of the reduction.

6.7  The right to cancel applies to consumers only. Our optional 30-day goodwill returns, including the products excluded from them, are explained in our Refund & Returns Policy.

7. Faulty products and your legal rights

7.1  We are under a legal duty to supply products that are of satisfactory quality, fit for purpose and as described. If you are a consumer, your rights include:

(a)     up to 30 days from delivery: if your product is faulty, you can get a full refund;

(b)     up to six months: if your product cannot be repaired or replaced, you are entitled to a full refund in most cases; and

(c)     up to six years (five years in Scotland): if your product does not last a reasonable length of time, you may be entitled to some money back.

This is a summary of your key legal rights. For detailed information, visit Citizens Advice at www.citizensadvice.org.uk.

7.2  Where a product is faulty or not as described, we will cover the reasonable cost of returning it, including pallet or battery collection where needed.

7.3  In addition to your legal rights, Thunder provides a commercial warranty on its products, as set out in our Warranty Policy. The warranty period for each product is shown in the Warranty Policy and on the product page at the time of purchase. Nothing in our Warranty Policy affects your legal rights.

8. Installation, connection and regulatory requirements

8.1  Our products fall into two categories, and the product page tells you which applies:

(a)     plug-in solar devices, which you may connect to a standard household socket; and

(b)     products that must be hard-wired into your electrical installation by a qualified electrician.

8.2  Plug-in solar devices. Our plug-in solar devices, such as our Bolt kits, are listed as compliant plug-in solar devices on the ENA register under the reference shown on the product page. Since 27 August 2026, plug-in solar devices that comply with the Government's Plug-in Solar Device Interim Product Specification may be connected to a standard socket-outlet in England, Wales and Scotland under the Plugs and Sockets etc. (Safety) Regulations 1994 and Electricity Safety, Quality and Continuity Regulations 2002 (Amendment) Regulations 2026 (SI 2026/848). To keep your installation safe and lawful, you must:

(a)     install and use the device in accordance with the instructions supplied with it;

(b)     connect it only with the supplied AC cable, directly to a suitable socket-outlet, and never through an extension lead, multi-way adaptor, travel adaptor or plug converter;

(c)     not open, modify or re-wire the device or replace any of its components, and not connect any additional panels or other equipment, except compatible components we supply for an upgrade to another listed configuration (for example, upgrading Bolt 460W to Bolt 920W);

(d)     not connect a battery or other storage system to the device, other than as part of a hard-wired installation under clause 8.3;

(e)     not connect more than one plug-in solar device in your household, in line with current network connection rules;

(f)      register the device when you connect it, using the Energy Networks Association's plug-in solar registration service at myplugin.solar or any service that replaces it, which notifies your electricity network operator. If you permanently disconnect, remove or replace the device, you must also notify your network operator; and

(g)     not connect the device through a socket-outlet in Northern Ireland, the Isle of Man or the Channel Islands, where the plug-in route under SI 2026/848 does not apply, unless local rules expressly permit it. In those places, the device must be connected in accordance with local requirements for generation equipment, which may include installation by a qualified electrician and approval from the local electricity network operator.

8.3  Hard-wired products. Any product that includes battery storage (including Bolt Plus, Storm Plus and Vault) are not plug-in solar devices as of September 2026. They must never be connected by inserting a plug into a socket-outlet, even where the AC cable supplied with them is fitted with a plug. They must be installed by a suitably qualified electrician via a fused connection unit (fused spur), in accordance with the product instructions and:

(a)     the latest edition of BS 7671 (IET Wiring Regulations);

(b)     the Building Regulations in England and Wales, including Part P where applicable, or the building standards in Scotland; and

(c)     Engineering Recommendation G98, including notification to your Distribution Network Operator. Your electrician will normally make this notification. If they do not, you are responsible for making it.

Your electrician should provide you with the relevant certificates and notification records, which you should keep.

8.4  Before connecting any product, check that your electrical installation is in good condition and suitable. If your consumer unit is old, your circuits are not clearly identified, or you are unsure about the condition of your installation, have it checked by a qualified electrician first.

8.5  We are not responsible for loss or damage caused by installation, connection or use that does not follow the product instructions, these Terms or the requirements in this Section 8, or by work carried out by you or a third party. This does not apply to the extent the loss or damage is caused by a defect in our product, inaccurate instructions from us, or our negligence.

8.6  Installation services. Where we provide installation or other services, the scope and price are set out in our quote or on the product page, and these Terms apply together with any specific terms in that quote. If you buy a service online as a consumer, you may cancel within 14 days of the contract. If you ask us to start the service within that period, you will pay for the work carried out up to the point you cancel, and you will lose the right to cancel once the service has been fully performed.

9. Your property, mounting and permissions

9.1  You are responsible for checking that the place where you install the product, whether a garden, flat roof, shed, outbuilding, wall or balcony, is structurally suitable and can safely support the weight of the equipment and the wind loads acting on it.

9.2  Solar panels must be securely fixed or ballasted so that they cannot be moved or lifted by the wind. Do not install panels where, if dislodged, they could fall onto people, public areas or neighbouring property, or where they would block access or escape routes.

9.3  If you rent your home or own it on a lease, you are responsible for obtaining any permission required from your landlord, freeholder or managing agent before installing. The plug-in solar regulations do not give tenants or leaseholders a right to install.

9.4  You are responsible for checking whether planning permission or any other consent is required, particularly if your property is a listed building, is in a conservation area or is a flat. Guidance for England and Wales is available at www.gov.uk/planning-permission-england-wales. In Scotland, contact your local planning authority.

9.5  We recommend that you tell your home insurer about your installation.

10. Our website and intellectual property

10.1  The information on our Website, including blog articles and guides, is provided for general information. It does not replace the instructions supplied with your product or advice from a qualified professional about your property.

10.2  The content of our Website, including text, images, datasheets, designs, logos and the names Thunder, Storm, Bolt and Vault, belongs to us or our licensors. You may view and print it for your personal use, but you may not copy, reproduce or use it for commercial purposes without our written permission.

10.3  When you buy a product, you own it. Any software or firmware in the product is licensed for use with the product by its manufacturer. Monitoring apps are provided by third parties under their own terms and privacy policies. If we provide our own app or monitoring service, separate terms will apply.

10.4  Links to third-party websites are provided for convenience only. We are not responsible for their content.

11. Our responsibility for loss or damage

11.1  If we fail to comply with these Terms, we are responsible for loss or damage you suffer that is a foreseeable result of our breach or our failure to use reasonable care and skill. We are not responsible for loss or damage that is not foreseeable.

11.2  We supply our products to consumers for domestic and private use. If you are a consumer, we have no liability to you for any loss of profit, loss of business, business interruption or loss of business opportunity.

11.3  Clause 8.5 explains our responsibility where installation, connection or use does not follow the product instructions or these Terms.

12. Your personal data

We use your personal data as described in our Privacy Policy.

13. Events outside our control

13.1  We are not responsible for delays or failures to perform caused by events outside our reasonable control, such as severe weather, fire, flood, pandemic, industrial action, carrier failures, supply shortages or acts of government.

13.2  If such an event affects us, we will tell you as soon as possible and take steps to minimise the delay. If there is a risk of substantial delay, you may contact us to cancel your order and we will refund you for any products you have paid for but not received.

14. Complaints

14.1  If you have a complaint, please contact us at support@thunderenergy.co.uk with your order number. We will acknowledge your complaint and aim to resolve it as quickly as possible.

14.2  You can also get free, independent advice from Citizens Advice at www.citizensadvice.org.uk.

15. Other important terms

15.1  We may transfer our rights and obligations under these Terms to another organisation. We will tell you in writing if this happens and will ensure that the transfer does not affect your rights.

15.2  You may only transfer your rights or obligations under these Terms to another person if we agree to this in writing.

15.3  Nobody other than you and us has any right to enforce these Terms, whether under the Contracts (Rights of Third Parties) Act 1999 or otherwise.

15.4  Each clause of these Terms operates separately. If a court decides that any clause is unlawful or unenforceable, the remaining clauses will remain in full force and effect.

15.5  If we do not insist immediately that you do anything you are required to do under these Terms, or if we delay taking steps against you, we can still require you to do it later.

15.6  We may contact you by email at the address you gave us when ordering. You can contact us at support@thunderenergy.co.uk.

16. Governing law and jurisdiction

These Terms are governed by the law of England and Wales. You can bring legal proceedings in the courts of England and Wales. If you live in Scotland, you can bring legal proceedings in either the Scottish or the English courts. If you live in Northern Ireland, you can bring legal proceedings in either the Northern Irish or the English courts.

17. Business customers

17.1  This Section applies if you buy from us for purposes relating to your trade, business, craft or profession, or on behalf of a public body or other organisation (a "Business Customer"). Where this Section conflicts with other Sections of these Terms, this Section prevails.

17.2  Where we agree a separate written contract, quotation or framework agreement with you, its terms prevail over these Terms to the extent of any conflict.

17.3  Section 6 and clause 7.1 do not apply to Business Customers. Returns of products that are not faulty are at our discretion.

17.4  Our Warranty Policy sets out our entire warranty obligations to Business Customers. To the fullest extent permitted by law, all other terms implied by statute or common law are excluded, except those that cannot legally be excluded.

17.5  Our total liability to a Business Customer arising under or in connection with any order is limited to the price paid for that order. We are not liable to a Business Customer for any loss of profit, revenue, business, goodwill or anticipated savings, or for any indirect or consequential loss. Nothing in this clause limits liability for death or personal injury caused by negligence, for fraud, or for any other liability that cannot be limited by law.

17.6  Where you supply or install our products for use by others, such as tenants or residents, you are responsible for ensuring that installation complies with Section 8 and for providing users with the instructions and safety information supplied with the product.