How did it all begin?

Inaugurated in the UK during the summer of 2023, our platform serves as a conduit connecting homeowners with a network of elite, local energy solution providers that have passed our rigorous assessment. Leveraging our unique technology, we evaluate homes for their energy potential and promptly recommend the most suitable energy solutions, enabling us to present instant quotes.

Our innovative solar calculator tool, accessible through a simple input of your postcode and address, enhances the user journey for homeowners keen on solar solutions. This tool allows for the generation of accurate project estimates without the necessity of a physical site inspection, streamlining the installation timeline. This efficiency not only promotes the adoption of rooftop solar systems but also plays a significant role in reducing carbon footprints.

Standing as the premier platform for both residential and commercial solar solutions in the UK. Our team, based in the UK, comprises skilled engineers, developers, and energy advisors dedicated to making solar energy accessible to every household, advocating for a widespread solar adoption.

Learn more about SUNUTI

SUNUTI Opening Times

At SUNUTI, we operate our consultations by appointment. This ensures one of our experts is available to sit down with you, and really get to know what you're after. It also means we can prepare a selection of different solar system offers just for you, your budget and your preferences. Please book ahead - and note that weekday evenings and Saturdays tend to book up a week or two in advance.

Book an appointment here.

Opening hours & Phone lines available

Monday to Friday - 10am to 6.00pm

Saturday - 10.00am to 5.00pm

Sundays & Bank Holidays - closed

Why not book a virtual consultation? We can't wait to meet you.

Where is the SUNUTI headquarters?

Cheyenne House, West Street, Farnham, Surrey GU97EQ

Our Consultations

What should I expect from our on or off site consultation?

Our platform stands out with its solar calculator tool, making SUNUTI a unique, technology-driven marketplace that instantly unveils the solar potential of your property. We focus on educating and engaging our potential clients with high-quality, visually compelling insights into the solar capabilities of their rooftops for any given address in the UK. This ensures you get access to personalized, relevant information in seconds. Our calculator can provide estimates on cost savings, array designs, and reliable quotes, all without the need for an in-person visit.

Our calculator can assess solar potential, including solar panel size, the annual amount of sunlight per month and yearly, carbon offset factors, and more. It also evaluates solar panel positioning, orientation, and energy production, along with estimated monthly energy savings and the associated costs and benefits of the optimal solar layout.

System Design

At SUNUTI, our approach to system design is personalized and precision-focused. Once we understand your energy requirements and site specifics, our team of expert engineers and designers craft a solar energy system that is both efficient and cost-effective. Using state-of-the-art technology and tools, we ensure that the proposed system maximizes energy output and fits aesthetically with your property's architecture.

Our designs also take into consideration local climate data and sun exposure to optimize the positioning of solar panels for maximum performance year-round. This phase ends with a detailed design proposal, including visual schematics and an outline of the projected energy savings, waiting for your approval before moving forward.

Read more on our blog about Solar system design process

Choosing Solar Panels

When selecting solar panels for your solar energy system, SUNUTI ensures that you receive the highest quality and most suitable panels for your specific needs. Here are key factors we consider:

Efficiency: We recommend panels with high efficiency to maximize energy production even in limited space.

Durability: Our panels are designed to withstand harsh weather conditions, ensuring long-term reliability.

Brand and Warranty: We work with reputable manufacturers known for their robust warranties and superior product support.

Aesthetic: We offer a range of styles that blend seamlessly with your roof, maintaining the aesthetic appeal of your property.

Our experts will guide you through the options to find the best fit for your energy goals and budget.

Read more on our blog on how to choose Solar panels

Choosing an Inverter

The inverter is a crucial component of your solar system, converting the DC electricity generated by your panels into AC power usable in your home. Here’s how SUNUTI helps you choose the right inverter:

Type of Inverter: Depending on your system's size and layout, we'll help you decide between string inverters, microinverters, or hybrid inverters.

Efficiency: We prioritize inverters that offer high efficiency to ensure maximum conversion of solar energy.

Compatibility: The inverter must match the specifications of your solar panels to optimize performance.

Warranty and Support: We select inverters backed by strong warranties and reliable customer support.

Our goal is to provide you with an inverter that enhances system performance and reliability.

Read more on our blog guide about Solar inverters

Choosing a Battery

Integrating a battery storage system allows you to maximize the use of your solar energy, ensuring power availability even when the sun isn’t shining. Here’s how we guide you in choosing the right battery:

Capacity and Power: We assess your energy usage to recommend a battery with sufficient capacity and power output to meet your needs.

Lifespan and Warranty: We choose batteries offering long lifespans and robust warranties to ensure value for your investment.

Type of Battery: Depending on your needs and budget, we can recommend lithium-ion, lead-acid, or alternative types, each with its own benefits and trade-offs.

Safety Features: Safety is paramount. We ensure that the batteries we recommend are equipped with advanced safety features to protect your home and family.

With SUNUTI, you’ll receive expert advice tailored to ensure your battery storage system is efficient, safe, and suited to your energy needs.

Read more about Solar Batteries on our blog guide

Pricing & Payment

At SUNUTI, we believe in transparent and fair pricing. We do not require any down payment until you have reviewed and agreed upon the order. Here's how our payment process works:

Initial Payment: If your installation requires a G99 application, we require a 25% deposit. This deposit is fully refundable if the application is not approved, ensuring that you do not bear any financial risk.

Deposit Protection: IWA protects the deposit from the moment it is paid, and a Deposit Protection Certificate is issued. Coverage is in place once we register the contract with IWA and a policy has been issued to you.

Pre-Installation Payment: Before we begin any onsite work, including scaffolding, we collect 50% of the total project cost. This ensures that all necessary materials are secured and ready for your installation.

Final Payment: The remaining 25% is due upon the successful issuance of the MCS certificate after installation is complete. This final installment is only requested once we ensure that everything is installed as per the highest standards and you are ready to start benefiting from solar energy.

Our goal is to keep the payment process simple and secure, giving you peace of mind as you transition to solar power.

Payment Method

To make the payment process as convenient as possible, SUNUTI offers a variety of payment options. You can choose any of the following methods to settle your invoices:

Bank Transfer: Secure and straightforward, you can send payments directly from your bank account to ours.

Credit/Debit Card: We accept all major credit and debit cards face to face or via a payment link for quick and easy transactions including Amex.

Finance Options: For those who prefer to finance their installation, we offer tailored financing solutions to spread the cost over time.

Each payment method is secure and designed to provide you with peace of mind throughout the transaction process.

Placing An Order

Finalizing your order with SUNUTI is simple and secure, thanks to our use of electronic agreements for all contract signings. Here’s how the process works:

Review Your Proposal: After your system design is approved, we will send you a detailed proposal and contract to review. This document will include all the specifications, pricing, and terms of your solar installation.

Signing Digitally: Once you're ready to proceed, you'll receive the contract via our electronic agreement industry-leading digital signature platform that ensures the security and legality of electronic signatures. You can sign your contract from any device, at your convenience, without the need for printing or scanning.

Confirmation: After you sign the contract, a copy will be automatically sent to your email for your records. We will also receive a notification and begin preparing for the next steps in your solar installation process.

Customer Support: If you have any questions or need assistance during the signing process, our dedicated customer support team is always ready to help.

By using an electronic agreement system, we streamline the contracting process, making it faster, more secure, and environmentally friendly.

G99 certificate

For larger solar installations, obtaining a G99 certificate is crucial to ensure compliance with grid connection standards. Here’s how SUNUTI supports you through this process:

Assessment: We begin by determining if your installation requires a G99 certificate based on its size and specifications.

Application Preparation: Our team of experts prepares all necessary documentation and technical details required for the G99 application. This includes system design, electrical schematics, and safety features.

Submission: SUNUTI handles the submission of your G99 application to the local network operator. We manage all correspondence and follow-ups to ensure a smooth process.

Monitoring and Updates: Throughout the application process, we keep you informed of the progress and any additional information required by the grid operator.

Final Approval: Once your G99 application is approved, we proceed with the installation of your solar system, ensuring all standards are met for a safe and compliant connection to the electrical grid.

Our team works diligently to navigate the complexities of grid compliance so you can focus on the benefits of your new solar energy system.

Read more about G98 or G99 certificates on our blog


To ensure a safe and efficient installation of your solar panels, SUNUTI arranges for bespoke scaffolding to be erected at your property. Here's how we manage this critical part of the installation process:

Timely Setup: Two days before the scheduled installation date, our certified scaffolding team will arrive at your site. This timing allows us to prepare your property without rushing, ensuring that everything is perfectly in place for the installation day.

Bespoke Design: Each scaffolding setup is tailored to the specific requirements of your property. This customized approach ensures that our installation team can work safely and effectively, regardless of the architectural challenges presented by your building.

Safety and Efficiency: Our scaffolders are trained to the highest standards of safety and efficiency. We take great care to minimize any disruption to your daily routine, while ensuring that the scaffolding provides strong support and easy access for our technicians.

Post-Installation Removal: Once the installation is complete and the MCS certificate is granted, we promptly dismantle the scaffolding. This process is handled with the same attention to detail and respect for your property as every other step in our service.


At SUNUTI, we ensure that all equipment needed for your solar panel installation arrives safely and on time. Here’s how our delivery process works:

Scheduled Delivery: Ideally, we deliver all necessary equipment to your property one day before the installation begins. This advance delivery allows us to verify that all components are on site and ready, ensuring a smooth start to the installation process.

Secure Storage: We ask that you provide a safe space on your property to store the equipment until the installation begins. This helps in keeping the components secure and readily accessible.

Flexible Arrangements: If a secure storage space is not available at your property, we can arrange for the equipment to be delivered on the day of the installation instead. This flexibility ensures that we can adapt to your specific needs without delaying the project.

Coordination and Support: Our team will coordinate with you ahead of time to confirm delivery details and address any concerns you may have. We strive to make the delivery process as convenient and unobtrusive as possible. By carefully managing the delivery and storage of your solar installation equipment, SUNUTI ensures that everything is in place for a successful installation.


At SUNUTI, we prioritize quality and customer satisfaction above all. To ensure the highest standards are maintained during the installation of your solar panels, we adopt a detailed two-day installation process:

Day One: On the first day, our certified installation team prepares the site, sets up the scaffolding if not already in place, and begins mounting the solar panels. This day focuses on carefully positioning and securely attaching the panels to your roof, ensuring that every component is aligned and functioning correctly.

Day Two: The second day is dedicated to completing the electrical connections, optimizing the system configuration, and conducting thorough testing. This extra time allows us to ensure that the system is not only operational but also fine-tuned for maximum efficiency.

No Rush, Better Quality: Unlike some companies that rush to complete installation in a single day, we spread the process over two days. This approach reduces the risk of errors and allows ample time for meticulous craftsmanship and quality control.

Customer Walkthrough: At the end of the installation, we provide a detailed walkthrough of your new system, explaining how everything works and answering any questions you may have. This ensures that you are fully informed and comfortable with your new solar energy setup.

By not rushing the installation process, SUNUTI ensures that your solar system is installed with the care and precision it deserves, leading to better performance and longevity.

Read more about the Solar installation process on our blog guide

MSC Certificate

At SUNUTI, obtaining an MCS certificate for your solar installation is an essential part of our process, underscoring our commitment to quality and compliance with industry standards.

What is an MCS Certificate? The MCS certificate is a mark of quality and demonstrates compliance to industry standards for renewable technology installations. It confirms that both the products used and the installation process meet rigorous and consistent standards.

Process for Obtaining MCS Certificate: Once your solar system installation is complete, our installer will register the installation with MCS and issue an MCS certificate. This process includes verifying that all components have been installed correctly and that the system is fully operational according to MCS guidelines.

Benefits of the MCS Certificate:

Quality Assurance: Ensures that your solar system is installed to the highest technical standards.

Eligibility for Incentives: An MCS certificate is often required to qualify for governmental financial incentives and support schemes.

Increased Property Value: Systems certified under MCS can increase the value of your property by confirming that the installed technology is safe, reliable, and compliant with current standards.

Final Steps: After the successful inspection, the MCS certificate is issued. SUNUTI will provide you with all necessary documentation and assist with any questions you might have about the certification or the operation of your new system.

By ensuring that every installation is MCS certified, SUNUTI guarantees that your solar system is not only efficient and safe but also a valuable addition to your property.

Read more on our guide about MCS certificate for Solar installation

Connecting to the grid

Connecting your new solar system to the energy grid is a crucial final step in harnessing solar power. SUNUTI guides you through this process to ensure a seamless transition and to maximize your energy savings and returns.

Initiating Connection: While you await the issuance of your MCS certificate, and potentially a G98 certificate for systems with an output up to 3.68 kWp which receive automatic approval post-installation, we recommend beginning the process of connecting to the energy grid. This step involves notifying and coordinating with your energy provider, such as Octopus or E.ON, known for their favorable terms for purchasing surplus energy.

If your property does not already have a smart meter, it is essential to arrange for its installation through your energy provider. A smart meter is crucial for accurately monitoring the energy you consume and the surplus energy you feed back into the grid.

Customer Responsibility: It is important that you contact your energy provider to request the installation of a smart meter. Providers typically handle the setup and any associated costs directly with you.

Why a Smart Meter is Important:

Accurate Energy Tracking: Smart meters provide real-time data on your energy usage, allowing you to manage your consumption more effectively.

Surplus Energy Management: With a smart meter, you can accurately track the amount of energy you feed back into the grid, which can help you maximize the financial returns from your solar system.

Read more on our guide on How to Sell Your Surplus Solar Energy Back to the Grid in the UK


At SUNUTI, we stand behind the quality of our products and the expertise of our installation team. To ensure your peace of mind and satisfaction, we offer comprehensive guarantees on both equipment and workmanship.

25-Year Equipment Guarantee: We supply solar equipment from manufacturers that provide a 25-year guarantee on the solar equipment we install. This long-term warranty covers any defects in materials or performance, ensuring that your solar panels continue to operate efficiently throughout their expected lifespan.

5-Year Workmanship Guarantee: Our installations are backed by a 5-year workmanship guarantee. This covers the quality of the installation labour and the integrity of how the system is set up. If any issues arise due to our installation, we are committed to resolving them promptly.

Insurance Backing: To further protect your investment, our workmanship guarantee is supported by special IWA insurance. This means that even in the unlikely event of SUNUTI facing operational difficulties, your guarantee remains secure and actionable.

Commitment to Service: Our guarantees are a testament to our commitment to delivering high-quality products and services. Should you encounter any issues, our dedicated customer service team is readily available to assist you with claims and ensure that any concerns are addressed swiftly and satisfactorily.

By offering robust guarantees and insurance backing, SUNUTI provides you with not just solar solutions, but also the assurance that your investment is protected for years to come.


At SUNUTI, our commitment to you extends far beyond the initial installation. Our comprehensive aftercare services are designed to ensure that your solar system continues to operate at peak efficiency and that any issues are addressed promptly and effectively.

Regular Maintenance Checks: We offer scheduled maintenance services to keep your solar system in optimal condition. These checks help to identify and resolve any potential issues before they can impact performance, extending the lifespan of your system. Please contact us to find out more.

Customer Support: Our dedicated customer support team is available around the clock to answer your questions and address any concerns you may have. Whether you need assistance with system monitoring, performance issues, or warranty claims, we are here to help.

System Monitoring: We provide ongoing monitoring of your solar system’s performance. This allows us to quickly detect any irregularities and take corrective actions without delay.

Updates and Upgrades: As advancements in solar technology continue, SUNUTI keeps you informed about potential upgrades or updates that could enhance your system's efficiency and output.

Educational Resources: We believe in empowering our customers with knowledge. SUNUTI offers a variety of educational resources that help you understand and manage your solar system more effectively, ensuring you get the most out of your investment.

Our aftercare services are a reflection of our dedication to your long-term satisfaction and the performance of your solar energy system.

Customer Support
Do you have additional questions? No problem, let us help you through the process