Solar PV

What is Solar PV?

A solar photovoltaic (solar PV) system works by absorbing sunlight and converting it into energy that can be used in your home. This means your home won’t need to import as much energy from the grid, helping to reduce electricity bills.

A battery may be installed alongside the solar PV system and can be used to store excess energy generated by the solar panels on sunny days so it can be used on cloudy days or during the nights. A battery may be recommended as part of the funded installations for your home; alternatively, some homeowners choose to purchase a battery themselves to complement their solar PV system where it is not possible to fund it.

Common Misconceptions / FAQs

Solar panels only work when it’s sunny/warm

- Solar panels work off light, not heat.

- Cold temperatures in winter do not affect their function.

- Shorter days and lower sun angles in winter reduce sunlight hours, but panels run more efficiently in colder temperatures.

- Even in cloudy UK weather, panels still produce electricity—just less depending on cloud cover.

Solar installation is a lot of hassle

- This may come from private installations where homeowners handle planning permission, contacting the DNO, and roof assessments. With YES, we or our subcontractors handle all of this, you don’t need to worry.

- Physical installation typically takes 1–3 days.

It’s difficult to get permission to install a solar system

- Planning departments vary, but Solar PV is considered permitted development in most cases.

- YES and our contractors ensure all requirements are met before installation.

Solar panels are bad for the environment after their lifetime.

- Panels typically last up to 25 years and can be recycled.

- Installers must arrange recycling under the Waste Electrical and Electronics Equipment Directive. If the installer is no longer in business, Dedicated Collection Facilities (DCF) can take them back free of charge.

Will I own the solar panels?

Yes! You’ll receive a Solar Ownership document confirming they belong to you. This will not affect your ability to sell your home.

The Installation

Someone must be present

This can be you or someone you trust. Installers will advise on timing and duration.

Before the Installation

• Surveys will determine:

Which roof is best for panel placement:

• South-facing with minimal shading is ideal.

• The type of roof also matters—not all roof types (e.g. steel) are suitable for installation.

• Roof structure to ensure it supports the panel weight:

• In some rare cases, a structural engineer may need to conduct their own site survey.

• Access for fitting and space for electrics (loft, garage, etc.).

• Whether additional electrical work is needed.

If planning permission is required, YES will arrange this.

Please do not start a planning application yourself.

During the Installation

•Clear the space for electrics—this will be agreed with installers beforehand.

This will be the responsibility of the customer. If you are unable to move anything, please consult the contractors and they will be able to assist.

• A typical install includes:

• Securing roof anchors into rafters.

• Mounting the racking system.

• Attaching solar panels.

• Installing bird protection.

• Connecting electrics to the property (access to main supply and fuse board needed).

• Installing an inverter (usually in the loft).

• Connecting the inverter to the grid or battery.

After the Installation

Installers will advise if an internet connection is needed for remote monitoring.

Array testing ensures the system works correctly.

Scaffolding remains for a few weeks for easy access if needed.

Rubbish is usually removed the same day/week.

You can now contact your energy provider to set up a Smart Export Guarantee (SEG).

Smart Export Guarantee (SEG)

If you don’t use all the electricity generated and don’t have a battery, the excess is exported to the grid.

• SEG means your provider pays you for this exported energy.

• Not all suppliers offer SEG, and tariffs vary—shop around.

• Typical documents required:

• Solar ownership letter

• MCS certificate

• G98 notification

Contact YES if your supplier asks for anything else.

Maintenance Recommendations

• Panels are self-cleaning, but annual cleaning is recommended.

• Use qualified personnel or ground-level equipment.

• Keep trees and foliage trimmed to avoid shading.

• Consider future building work that might block sunlight.

Handover Documents

You can expect the following documents to be provided once the installation is complete, and the work has been signed off.

Trustmark Certificate

· Microgeneration Certification Scheme (MCS) certificate

· Solar ownership letter

· Micro generation (G98) notification

· Electrical installation certificate

· Insurance backed guarantees

· Building regulations certificate (or evidence of competent persons scheme)

· Claim of compliance document

· PV System Verification Certificate

· Workmanship guarantee

· Manufacturer's warranty

· User guide