A practical guide to lender green finance products that can reduce the upfront cost of solar and batteries.
Important note:
Platinum Electrical Solutions is an installation specialist, not a financial advisor, credit broker, or lender. This page is a general guide to products currently offered by UK lenders. You must apply directly with your bank or mortgage provider and check eligibility, rates and terms with them.
Why this matters right now
Recent government announcements about the Warm Homes Plan and the wider push for home energy upgrades have put a spotlight on funding options. At the same time, several major lenders have introduced green borrowing and reward schemes to make improvements like solar panels and battery storage more accessible.
How green finance usually works
Most green finance options fall into two categories:
- Additional borrowing on your mortgage
Some lenders allow you to borrow extra against your existing mortgage for eligible home improvements, sometimes at a preferential rate. This can be a way to avoid higher-interest personal loans. - Cashback or rewards after installation
Some lenders offer cashback when you complete and verify eligible improvements. These schemes typically require proof of installation and certification.
What lenders are offering
Offers change and eligibility varies, so always check your own lender’s latest terms. These are examples of options available in the UK market.
Nationwide Building Society
Nationwide offers a 0% interest Green Additional Borrowing product for qualifying customers, fixed for a set period. This is designed for energy-efficient home improvements.
Halifax and Lloyds Banking Group
Halifax offers Green Living rewards that can include cashback for eligible improvements such as solar panels and battery storage. The amount depends on the improvement type and current offer terms.
Barclays
Barclays offers a Greener Home Reward for eligible mortgage customers completing certain improvements. These schemes usually require documented proof and often reference MCS certification for solar works.
What you will usually need to apply
Most lenders will ask for some or all of the following:
- A formal quote from an accredited installer
- Confirmation of the work being completed (final invoice)
- Certification documents for the installed system (often an MCS certificate for solar)
- Sometimes an EPC or other property information
How to apply: a simple step-by-step
Step 1: Get a quote
Request a formal quote from Platinum Electrical Solutions so you have a clear system specification and cost to share with your lender.
Step 2: Speak to your lender about green finance
Log in to your banking app or call your lender. Ask for green additional borrowing, eco additional borrowing, greener home reward, or energy efficiency finance options. Many lenders treat this as a top-up rather than a full remortgage, but the process depends on the bank.
Step 3: Get an approval decision
Some lenders provide a decision in principle quickly. Others will request documents before confirming.
Step 4: Install
We complete the installation to the standards required for certification and documentation.
Step 5: Submit your paperwork
After commissioning, we provide your final invoice and certification documents. You submit these to the lender to finalise any borrowing, trigger cashback, or complete the claim process.
Why installer credentials matter
Some lenders will only accept claims or documentation when the work is completed by an appropriately certified installer. For solar PV, MCS certification is commonly referenced. TrustMark registration may also be relevant depending on the product terms.
Platinum Electrical Solutions is MCS certified and TrustMark registered, and we provide the completion paperwork you need for your lender process.
Quick next step
If you want to explore finance options with your bank, start with a quote so you have the correct system cost and specification.
Request a quote here
https://platinum-electrical-solutions.co.uk/contact/
Battery-only and want an instant estimate first
https://platinum-electrical-solutions.co.uk/battery-only-quote/
Do I have to remortgage to fund solar
Not always. Some lenders offer additional borrowing as a top-up to your existing mortgage, subject to eligibility and affordability checks. Others offer cashback rewards after installation.
Will my lender require an MCS certificate
Many solar-related products and rewards reference MCS certification. We provide the MCS certificate on completion for eligible solar PV installations.
Can I finance a battery-only system
Some lenders include battery storage as an eligible improvement, but criteria vary. If you cannot install solar, a battery-only setup can still reduce bills by charging off-peak and using stored energy during peak times.
Is green finance always 0%
No. Some products are 0% for a fixed period, others are low-interest, and others are cashback schemes. Always check the latest lender terms.