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 26/08/2025 KARL CALLICOTT 26/08/2025

Battery Storage Installation in Devon: Is It Worth It in 2025?

Access to government-backed incentives such as the Smart Export Guarantee (SEG) requires MCS certification. Cole Energy is in the process of completing MCS certification, and has the assessment date on the 31st October. Eligibility for SEG and similar schemes will apply once certification is achieved. Actual savings and efficiency improvements depend on individual circumstances, including system size, location, roof orientation, electricity usage habits, and export tariffs. Estimates are indicative based on third-party data.

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