Thermosun Engineering and Power India Pvt. Ltd.

A good Solar company in Delhi to deal with. Initially, the vendor has thoroughly done the job right from installation until the subsidy credit but at times they lack in providing after sales service (which committed for four years) as the solar panels need dust cleaning every month to get optimum electricity generation.

We have installed 5kw subsidy solar plant in pm surya ghar yojna. Best solar company in delhi. Very supportive team and coperative.

We have installed 5kw ongrid system in dec 2025. Thermosun is the best solar company in Delhi . We get subsidy in time. Very supportive team .

Thermosun Engineering And Power India Pvt ltd. in Delhi installed two solar systems for us of 25 KW each. The team coordination was extremely good. They completed the installation on time and with quality products. We appreciate all the team members who interacted with us. They had friendly attitude. This team had rendered a great service. They answered all our questions and were available any time. We thoroughly enjoyed their services.

Thermosun provided professional solar panel installation in Delhi for our home. The team explained the entire process clearly and completed the rooftop solar installation on time. Our electricity bills have reduced significantly. Definitely one of the best solar companies in Delhi for residential solar systems.

Thermosun is the best solar panel company in Delhi. As we order plant they quickly installed and we get subsidy too. Highly recommend foe solar plant installation.

Update on my review because I can't respond to the owner's comments: Comment updated on 03/08/2026 I am sure that the owner of this business is probably not at fault but his staff is really tarnishing the name of the business. I did not want to go ahead with this company, because I had sourced my own preferred installation company. However, my father was in touch with some others who had referred this business and he really wanted to give the business to them, purely just because he wanted comfort and convenience at his age. So I conceded. Mind you, my father is a senior citizen 67 year old man who is a stroke survivor and still goes to work 5 days a week. The amount of pain that your staff has given us and the headaches I have heard from my father, I am extremely disappointed. I have personally heard phone call conversations between my father and Vicky and there is little to no customer care or service shown, knowing full well that this person's age, after struggling through the entire process including mishaps that we have already pointed out on the emails but you have refused to take any accountability for it, we have a very minimal problem left which should be fixed easily but instead we have to struggle to book some time for someone to come in and get the meter connected. The reason why we decided to go ahead with you despite being the more expensive option was because of the ease of installation and you were supposed to have really good customer service, and I can share the quotes I received from other vendors to the owner to prove that we paid a premium to pick you guys instead only for the convenience. You have disappointed us and kept pestering us for payments without completing the job, having to chase you many times. I do not enjoy writing bad reviews for people but I do not have any other way to tell the owner how the customer service is being mishandled apart from this platform. I live in Australia far away from my parents and the main thing I want is ease and comfort for them, even if that means I have to spend extra, but with you I have had to spend extra and also had to deal with horrible customer service and pressures to release payments without completing the job 100%. I can pay you the money right now, but based on what I've seen, you will show 0 effort to go the last mile and get this done. You provide guarantee for 25 years, I am really nervous about how often you're going to show up for your customers. I'm quite frustrated and very very disappointed with this entire saga. Comment on 31/07/2026 After installation at our house they have taken 95% of the payment but they have bothered us so much by not picking up calls and not finishing off the invertor setup and installation. I cannot track any solar activity in my house, I do not even know whether it is working properly or not. They say that they provide 10 years warranty. Within 2 months I have seen such horrible customer service, I don't know whether this company is even going to be there after 10 years. Highly recommend to stay from these people.

Very impressed with the professionalism and dedication of Thermosun Engineering and Power India. They guided me through every step, answered all my questions, and installed a high-quality solar system efficiently. Best solar company in Delhi.

Best service we get from Thermosun. The technical team is very polite. Product is also genuine. I can say without any doubt that Thermosun is best solar company in delhi.

Delhi ki garmi me AC chalane se har mahine bill itna zyada aa raha tha ki me bahut pareshan ho gaya tha. Phir mene socha ki kuyna solar panel lag walu phir mere ek neighbour ne bataya ki Thermosun se solar panel lagwane ko suggest kiya kyunki inki service bahut acchi h. Phir mene Inki team ko contact kiya and phir yeh mere ghar aakar space check ki aur hamare budget ke hisab se 3kw ka system setup kiya. Ab electricity bill na ke barabar ho gaya hai. Service aur installation dono me ye sach me Best solar company in delhi hain. Highly satisfied!