How much does solar battery storage cost in Devon in 2025?

Expect to pay £3,500–£8,500 depending on battery size and brand.

How long do solar batteries last?

Most batteries last 10–15 years, and many come with a 10-year warranty.

Do I need solar panels to benefit from a battery?

No — some Devon homeowners install batteries alone to take advantage of cheap overnight tariffs.

What is MCS and why does it matter?

MCS is the UK quality mark for small-scale renewables. It assures product and installation standards and unlocks benefits such as Smart Export Guarantee (SEG) payments for solar.

When is Cole Energy’s MCS assessment?

Our MCS assessment is booked for 31 October 2025.

From when will Cole Energy’s solar installs be MCS-certified?

Installations commissioned from November 2025 onward will be MCS-certified.

Will MCS certification make my solar system eligible for SEG?

Yes. With MCS certification, you can apply to an energy supplier for Smart Export Guarantee (SEG) payments for exported electricity.

How do I get started with Cole Energy?

Book a free survey or request a free quote via our website. We’re now taking bookings for November installations.

KARL CALLICOTT 08/11/2025 KARL CALLICOTT 08/11/2025

Cole Energy Takes the Next Step Toward Tesla Powerwall Partnership

Tesla Powerwall and solar panel system – Cole Energy renewable installers in Devon and Cornwall (image © Tesla)

Member of the Renewable Energy Consumer Code (RECC).
Working in partnership with Easy MCS.
HIES membership application pending approval.
All installations compliant with MCS technical standards.

Accreditation Update:
Cole Energy installations are designed and installed to MCS technical standards in partnership with certified professionals.
Our MCS certification is currently in progress and expected to complete by November 2025
All work complies with RECC and HIES consumer protection standards.

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