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Monday 08:00 - 17:00 Tuesday 08:00 - 17:00 Wednesday 08:00 - 17:00 Thursday 08:00 - 17:00 Friday 08:00 - 17:00 Saturday 08:00 - 13:00

SolarTherm

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SolarTherm

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SolarTherm is the most trusted brand in the Sri Lankan Solar industry, operating since 1982 with a cu and Alpha Solar Energy Systems (Pvt) Ltd.

SolarTherm is the house hold solar energy service provider in Sri Lanka with the largest customer base over 80,000 customers. We are the pioneers in the solar Water Heating industry with two factories operating in Ekala industrial Estate and Kandana. We are also one of the pioneers in Solar Photovoltaic (electricity) industry for more than 2 decades in Sri Lanka. SolarTherm products are sold by Alpha Thermal Systems (Pvt) Ltd. Our reference projects include largest privately own solar park and the largest solar water heating systems installed in Sri Lanka. SolarTherm water heaters are manufactured in Sri Lanka and customized solutions are integrated using reputed manufacturers across the world. We are an authorized dealer for products from Rheem Australia, a global leader in the solar water heating industry. We are also the exclusive dealer for SolarWorld, solar electricity modules from Germany, which are known as the quality leader in the module manufacturing industry for over 35 year. SolarWorld is the largest high efficiency PV module manufacturer in the world and the largest manufacture off of China. We are also sales and service partner for Fronius inverters made in Austria, considering as the leader in inverter technology for over 20 years.

20/10/2026

කරන්ට් එකෙන් වතුර උණු කරනකොට ඔයාගෙ ගෙදර විදුලි පරිභෝජනය විශාල ප්‍රමාණයකින් වැඩි වෙනවා.
Solartherm Hot Water Systems එක්ක සෝලා බලයෙන් වතුර උණු කරන්න, ගෙදර විදුලි වියදම අඩු කරගන්න.

වැඩි විස්තර සඳහා 011 267 9944 අමතන්න.

19/10/2026

Some journeys go beyond the finish line. They touch lives, inspire hope, and remind us that every voice matters.

From Chilaw to Colombo, every pedal of PC Race 2026 carries a powerful message, Together, We Ride for a Cause.

At Solartherm, we believe a brighter future begins when we stand together for what truly matters. Let’s raise awareness, spread hope, and ride towards a world where no one has to face breast cancer alone.

Every Ride. Every Voice. Every Life Counts.

14/10/2026

When there’s no grid power, your home can still stay powered.

With a Solartherm Off-Grid System, solar power and battery storage work together to power your essential appliances without depending on the electricity grid.

Call 011 267 9944 for more details.

12/10/2026

Heavy rain and cloudy weather don't have to mean giving up your hot shower.
Solartherm Hot Water Systems store heated water, allowing you to enjoy hot water even when the weather isn't cooperating.

Call 011 267 9944 for more details.

08/10/2026

Powering homes. Building trust. For over 40 years.

Another SolarTherm system installed, adding one more home to a legacy built on 40+ years of expertise and the trust of 100,000+ customers.

SolarTherm, Experience you can trust. Energy you can rely on.

06/10/2026

Behind every lesson is a teacher who inspires, guides and shapes the future.

Today, we celebrate the dedication, wisdom and strength of every teacher.

Happy Teachers’ Day!

02/10/2026

When a customer comes back, it means something.

Having already experienced Solartherm, our valued customer returned to us once again, this time for a Solartherm Hot Water System.

From one solution to another, his continued trust is what motivates us to keep delivering better.

Thank you for choosing Solartherm, once again.

Web Site : https://solartherm.lk/

01/10/2026

Every child deserves to dream, explore, laugh and grow without limits.

Let’s celebrate the little hearts that bring so much joy and the big dreams that shape our future.

Happy Children’s Day!

23/09/2026

Most people think solar is just about cutting your electricity bill. They're right. But Solartherm hybrid systems do something more, it cuts you free from the grid entirely.

Call 011 267 9944 for more details.

22/09/2026

තවදුරටත් විදුලි බිලට බයවෙන්න ඕනෙ නෑ.

වඩා කාර්යක්ශමතාවක් සහිතව වසර 40ක් පුරා පාරිභෝගික විශ්වාසය දිනූ Solartherm Hot Water System එකක් අදම ගෙදරට ගෙනියන්න.

වැඩි විස්තර සඳහා 077 700 5593 / 0112 679 944 අමතන්න.

Address

121 Castle Street Colombo 08
Colombo
00800

Opening Hours

Monday	08:00 - 17:00
Tuesday	08:00 - 17:00
Wednesday	08:00 - 17:00
Thursday	08:00 - 17:00
Friday	08:00 - 17:00
Saturday	08:00 - 13:00

Telephone

+94772159997

Website

http://solartherm.lk/

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