What’s in a Solar Proposal? How to Weigh Up Solar Options for Your Home
Considering solar panels for your home is a significant step. Once you start receiving proposals, though, the details can quickly become confusing. How do you tell whether a proposal suits your budget and energy needs? This guide walks you through the key parts of a solar proposal and gives you a simple checklist so you can judge each one with confidence.
Why It Pays to Read Solar Proposals Carefully
No two solar proposals are the same. The cost, equipment quality, warranties and aftercare can vary a lot between installers. It is sensible consumer practice to get more than one quote and to read each one carefully, so you don’t end up with a system that doesn’t meet your needs.
Our solar proposal checklist below sets out what to look for in each quote.
Key Components of a Solar Proposal
1. System Design & Performance
A good proposal will include details about the system size, panel specification and how the system is expected to perform based on your roof’s shading and orientation. Check that performance estimates follow the MCS method and are realistic for your home. Use our checklist to note the estimated output for each proposal.
2. Costs & Savings
The upfront cost is important, but so is the long-term savings potential. A good proposal will outline the total system cost, including VAT (qualifying home solar and battery installations are currently zero-rated), and give an estimate of your energy savings and export income over time. Savings depend on your usage, tariff and how much of your generation you use at home.
3. Financing Options
Some installers offer finance through a regulated lender. Check the total amount payable, the term and the monthly repayments, and make sure the installer is authorised by the FCA to arrange credit. Finance is always subject to status and affordability.
4. Warranties and Aftercare
Warranties are a crucial part of any solar proposal. Look for clear guarantees on the panels, the inverter and any battery, as well as a workmanship warranty. Ask whether deposits are protected and whether the workmanship warranty is insurance-backed, and check what support is offered after installation.
5. Installer Reputation
A good deal isn’t just about the price: the reputation of the installer matters just as much. Check that the installer is certified by the Microgeneration Certification Scheme (MCS), is a member of a consumer protection scheme such as HIES, and has genuine, recent customer reviews.
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Your Solar Proposal Checklist
To keep things simple, use the checklist below when you read through each proposal. It gives you a clear overview of the key factors, such as system size, cost, warranties and financing options.
How to Use the Checklist
Work through each section for every proposal you receive and note the answers side by side. Here’s what to check:
- System Design & Performance: The number of panels, panel make and model, inverter and battery (if any), system size and estimated annual generation.
- Costs & Incentives: The total system cost including VAT, what is included (scaffolding, bird protection, monitoring), and the projected savings and Smart Export Guarantee income.
- Financing Options: The lender, total amount payable, term and monthly repayments for any finance offered.
- Warranties: The warranty lengths for panels, inverters and batteries, plus any workmanship guarantee and whether it is insurance-backed.
- Installer Reputation: MCS certification, consumer protection membership (such as HIES) and a solid track record in customer reviews.
Final Thoughts
Taking time to understand each solar proposal is the best way to make a sound financial and energy-saving decision for your home. Use the checklist above to check each proposal carefully. Don’t rush the process, and don’t sign until you’re happy with every part of the quote.
Want a clear, itemised solar proposal? LODEAL by REST UK is an MCS-certified installer with more than 10,000 installations across England and Wales, and every quote follows a free survey. Get a free, no-obligation quote or call 03305 202053.
FAQs
A strong proposal will offer a detailed breakdown of costs, a clear performance estimate calculated using the MCS method, and clear warranties on equipment and workmanship. It should also explain any financing options and who the lender is.
Many people find it helpful to get more than one quote so they can weigh up system sizes, costs and warranties. Whatever you decide, make sure each installer is MCS certified and that you understand exactly what is included.
Not necessarily. While a low price might be tempting, it’s important to consider panel quality, warranties, deposit protection and the installer’s experience. The cheapest option may not offer the best long-term value.
Some installers can arrange finance through regulated lenders, such as an unsecured loan spread over a fixed term. Check the total amount payable and the term, and remember that finance is subject to status and affordability. You can also pay outright.
LODEAL by REST UK designs, supplies and installs solar panels, batteries and EV chargers itself. We are MCS certified and HIES members, and have completed more than 10,000 installations across England and Wales. Get a free quote.
