Referred by Octopus Energy? Welcome.
Solar and batteries from an Octopus Trusted Partner
Octopus may recommend us when they can't install for you directly. From the first survey to aftercare, you're our customer and we handle everything.
Prefer to plan it yourself? Design your solar system online (opens in a new tab).
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Independent companies selected, vetted and monitored by Octopus Energy against safety, quality and customer-service standards. Not Octopus employees.
Black in-roof panels we fitted, close up unconfirmed
How the Octopus Trusted Partner programme works
When Octopus Energy can't take on a solar or battery installation itself, for example because of where you live or the type of job, it recommends independent local installers it has checked. We're one of them.
You're our customer.
We handle your survey, quote, design, installation and aftercare ourselves.
You're free to choose.
If Octopus introduces you to us, you're free to choose any installer. There's no obligation to go ahead with our quote.
Your agreement is with us.
Any installation agreement is between you and Mercia Electrical. Octopus Energy isn't a party to the contract and doesn't supervise the work on site.
Our own prices.
We're an independent company with our own prices and terms. Octopus doesn't set them.
Octopus only shares your details with us if you ask them to.
Checked by Octopus, and accredited in our own right
Octopus Trusted Partners are selected, vetted and monitored by Octopus Energy for safety, quality and customer service. Alongside that, we hold the accreditations you'd expect from any installer you let into your home:
- MCS certified, so your installation gets the certificate energy suppliers ask for
- NICEIC approved contractor for electrical work
- TrustMark registered and a HIES member, so the Consumer Code protections apply unconfirmed
- A 14-day cooling-off period on home installations
- MCS
- NICEIC
- TrustMark
- HIES
What we can help with
Solar panels.
Panels for your roof, designed around how your household uses electricity.
Battery storage.
Keep your solar power for the evening, or add a battery to panels you already have.
Using an Octopus tariff with your system
Many people pair solar panels or a battery with a smart tariff. Tariffs, eligibility and prices change, so we don't pick one for you: we'll send you Octopus's official smart tariffs page so you can read the latest details and decide what suits your home.
What we do: set up your inverter and battery so they're ready for the tariff you choose unconfirmed, and give you the MCS certificate that suppliers usually ask for before they pay for the electricity you export.
Already with Octopus?
Email hello@octopus.energy.
New to Octopus?
Switch first, then pick a tariff.
Questions about Octopus accounts or tariffs? Octopus can help at hello@octopus.energy.
See Octopus's smart tariffs unconfirmed
One of our home installations
Trevor Little, Derby. A 16-panel GSE in-roof solar system with a Tesla Powerwall 3 battery. We fitted the panels into the roof alongside his roof renovation, worked with his roofer, and handled the grid approval.
"The system is performing brilliantly — I'm generating far more energy than I expected. Mercia are experienced, organised and fair — I highly recommend them." unconfirmedTrevor Little, Derby
Trevor Little's home, Derby
Questions about Octopus referrals
Are you part of Octopus Energy?
No. We're Mercia Electrical Ltd, an independent installer based in Mickleover, Derby. Octopus Trusted Partners are independent companies, not Octopus employees.
Why did Octopus send me to you?
Octopus recommends its partners when it can't do a job directly, for example because of the area or the type of installation. It only shares your details with us if you ask it to.
Do I have to be with Octopus to use you?
No. We install for anyone, whoever supplies your electricity.
Who sets the price?
We do. You'll get our own written quote after a survey, and there's no obligation to go ahead. There's no charge for the survey or quote unconfirmed.
Will my system work with an Octopus tariff?
We'll set your system up so it's ready for the tariff you choose unconfirmed and send you Octopus's official tariff page. Questions about Octopus accounts or tariffs? Octopus can help at hello@octopus.energy.
Who do I contact if something goes wrong?
For anything about your installation, contact us: we look after aftercare and complaints ourselves (see our complaints page). For your energy supply or your Octopus account, contact Octopus at hello@octopus.energy.
Can I spread the cost?
Yes, finance is available through our finance partners. Finance is subject to status.
Talk to us about your home
Tell us a little about your home and we'll call you to talk it through. Or email sales@merciaelectrical.com.
What happens next
Survey
We look at your roof, your usage and your electrics.
Design and quote
A system designed around how you use power, with a clear written quote.
Install and aftercare
Installation, grid paperwork, handover and support.