Your Trusted Solar Energy Company

Tethys Energy is the top choice in Reading for all of your solar power needs.


MCS Certified - Microgeneration Certification Scheme
MCS Certified - Microgeneration Certification Scheme
Which Trusted Trader - Highly Rated
RECC - Renewable Energy Consumer Code
NAPIT Approved Installer
Average of 4.9 out of 5 for Service, Quality & Value

Our Services

A solar energy company at the forefront of the industry, offering complete solar energy installations, including PV solar panels and solar batteries, as well as providing solar energy systems service and maintenance.

What makes Tethys Energy different from any other renewable energy company? From our long list of accreditation's and certifications to our many years of service, we are a trusted, proven, knowledgeable leader in the industry.

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Solar Panel Installations

Complete solar panel and energy installation service.
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Solar Battery Storage

Energy efficient solar batteries and energy storage.
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Solar Power Maintenance

Maintaining, cleaning and repairing your solar install.
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Solar Energy Audits

Review the viability of solar energy for your home.
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Hot Water Storage

Efficiently heat the water for your home with solar energy.
Reading, Finest Renewable Energy Company For Homeowners In Berkshire.
Jason Fuller - Director - Tethys Energy

Why Choose Us?

When you work with Tethys Energy, you get a solar energy company you can trust. Some of our many proven benefits include:
Free quotes and consultations.
No hidden fees.
More than a decade of knowledge.
Multiple accreditation's and certifications.
Innovative technologies.
Highly rated service on Which? Trusted Trader.

Benefits Of Home Solar Power Systems

Investing in a solar energy system installed by reputable solar energy installation company provides a number of benefits to homeowners.

These include...


A reduction in your monthly energy bill, sometimes up to a 50% drop in your total bill.
Cleaner, greener energy for the future health of our Earth.
The opportunity to sell your excess energy back to the national grid.
An increase in value to your home, and a feature that makes your home more marketable to potential buyers.
Provides energy independence. You don't have to rely on the grid and their ever inflating prices in order to power your home.
A reduction in your personal carbon footprint, ensuring you are reducing your household’s carbon emissions and reliance on fossil fuels.
Get A Free Quotation With A 100% No Quibble Guarantee.

Solar Energy Systems Installation Costs

The cost of your solar energy installation and entire system will vary greatly depending on many factors, but the solar energy company you use makes all the difference.

Not all solar power installation companies are created equal.

Many solar panel companies will charge astronomical mark-ups on their services, or will low-ball their estimate, and then add in hidden costs and fees throughout the process.

They may do shoddy work, skimping on important details and leading to a system that is not as efficient as it could be.


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Your Guarantee

With Tethys Energy, there absolutely no hidden fee's, what's quoted, is what it will cost. All our work comes with a 100% no quibble guarantee of workmanship, backed by NAPIT, RECC & MCS for your peace of mind.

Solar Engineers Installing Solar Panels In Reading - Berkshire

A Solar Energy Company For You

A solar panels company that truly cares about the homeowners we serve, Tethys energy is here for all of your renewable energy needs. Our services include:

Solar battery installation

We’re using one of the newest technologies around, solar batteries, to help you get the most out of your solar energy system.

PV solar panel installation

After a full consultation and estimate, we’ll install your system with the utmost care and expertise.
Solar energy system maintenanceWe offer routine maintenance and fix any issues with your system so that it will last longer and work as efficiently and effectively as possible.
Solar energy fault finding and repairHaving trouble with an existing solar energy system? We can run a full diagnostic and audit your entire system and provide recommendations on how to fix the problem efficiently.
5-Star Customer Service & The Highest Standards Of Workmanship.

What our happy customers say

We pride ourselves on our excellent service and believe in always going the extra mile to make sure you get great value for money and the highest standards of workmanship. Read what some of our other happy customer's have to say about Tethys Energy on Which? Trusted Traders here.

Excellent work...

"On time, on budget, professionally done and set up, including replacement of an inverter which was broken on arrival. Top of the line equipment used throughout."
BJ Thompson

Prompt and efficient...

"Jason did a great job of getting my PV array back working. I have recently taken over the array from another family member, so did not understand anything about it except that it wasn't working. Jason came, quickly figured out what the fault was, and fixed it with no fuss or bother."

Crispin Keable

Fantastic Service...

"Jason responded to my request for a second opinion promptly. I was "cold called" by a company offering a free check on my 6 year old solar energy system. They then tried to tell me the system was working at 72% capacity, that they would replace my inverter and install optimisers for £5,500 but special offer if i signed a contract there and then for £4,500. Needless to say I declined. I contacted Which? Trusted Traders for advice and was given Jason's name. He checked my system, found no problems and told me if anything it was performing better than expected."

Diana Benton

Get In Touch

Our goal is to offer the highest quality service and care to our customers.
For more information and to set up your free consultation, contact us today.