Glow Energy
Glow Energy is a Thai power and utilities company focused on electricity generation and the supply of electricity, steam, and processed water to industrial customers.
Last updated August 24, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
Glow Energy PCL was a Thai power and utilities company established in 1993. Its business was centered on electricity generation and the supply of energy and utility services to two principal customer groups: the Electricity Generating Authority of Thailand (EGAT) and industrial users located in major manufacturing areas. The company was described as one of Thailand's largest private electricity generators. Glow's operating model combined contracted power generation with industrial cogeneration. It supplied electricity to EGAT under power purchase agreements while also selling electricity, steam, and processed water directly to industrial customers. This combination gave the company exposure both to Thailand's national electricity system and to the utility requirements of industrial estates and large factories. In 2015, EGAT power purchase agreements represented 59.7% of revenue, illustrating the importance of long-term public-sector offtake arrangements to the business. Electricity remained the dominant revenue source, accounting for more than 85.4% of revenue in that year, while steam sales contributed 12.1%. The company operated four major production facilities in industrial areas of Rayong and Chonburi Provinces. At 31 December 2015, these facilities and other operations were reported to provide total generating capacity of 3,207 megawatts of electricity and steam production capacity of 1,206 tonnes per hour. Glow also had an international asset in Laos: a hydroelectric plant in Attapeu Province. Its generation portfolio therefore included natural-gas-fired, coal-fired, hydroelectric, and increasingly solar-based power facilities. Fuel mix was a significant feature of the company's cost structure. In 2015, natural gas accounted for 62.6% of total cost of sales and coal for 16.8%, while the company was increasing its use of solar generation. The mix reflected Glow's role as a diversified utility and cogeneration operator rather than a single-technology renewable-energy brand. Glow Energy was a subsidiary of the French energy company Engie, which held a 69.11% stake according to the cited 2015 material. The company employed more than 800 people at that time. Reported 2015 revenue was 65,369 million baht, with total assets of 117,169 million baht and net profit of 8,355 million baht; each was reported as lower than the corresponding 2014 result. These figures are historical and should not be treated as current operating data. The available reference material primarily describes Glow Energy in the mid-2010s and does not establish its present corporate status, current ownership, leadership, website, or post-2015 operating footprint. Accordingly, those fields remain unconfirmed in this dossier.
History
Glow Energy was established in Thailand in 1993 as a power and utilities business. Its development was tied to the growth of private electricity generation and the increasing utility needs of Thailand's industrial areas. Rather than focusing only on merchant electricity sales, Glow built a model combining power purchase agreements with EGAT and direct sales of electricity and process utilities to industrial customers. The company's principal operating base was in Thailand's eastern industrial corridor, particularly in Rayong and Chonburi Provinces. It operated four major production facilities in those areas, serving industrial customers that required dependable electricity, steam, and processed water. This cogeneration-oriented model allowed Glow to monetize both electricity and thermal output from its facilities and positioned the company as an integrated industrial utility supplier. By the mid-2010s, Glow had developed a substantial generation portfolio. As of 31 December 2015, reported capacity totaled 3,207 megawatts of electricity and 1,206 tonnes per hour of steam. The company also operated a hydroelectric plant in Attapeu Province, Laos, giving it an operating presence outside Thailand. Its generation technologies included natural gas and coal, with solar becoming an increasingly important part of its stated generation direction. Glow's commercial structure remained strongly linked to EGAT. Power purchase agreements with Thailand's state electricity authority accounted for 59.7% of revenue in 2015. Electricity sales overall generated more than 85.4% of revenue, while steam sales contributed 12.1%. These figures show that the company was primarily an electricity producer, with steam and processed water providing complementary industrial-utility revenues. Ownership during the period covered by the available reference was led by Engie, the French energy group, which held a 69.11% stake and treated Glow as a subsidiary. The company reported more than 800 employees at the end of the period described. Its 2015 revenue was 65,369 million baht, total assets were 117,169 million baht, and net profit was 8,355 million baht. The reference notes that all three measures were below the respective 2014 results. The available material does not provide a sufficiently documented account of later corporate transactions, leadership changes, current facilities, or the company's present legal status. The historical record therefore supports a description of Glow Energy as a major Thai private power and industrial-utility operator in the 1990s through the mid-2010s, but does not establish whether the brand remains active in the same form today.
- 2015
Large-scale generation and industrial utility operations documented
[1]At 31 December 2015, Glow reported 3,207 MW of electricity capacity and 1,206 tonnes per hour of steam capacity. Its operations included four major facilities in Rayong and Chonburi and a hydroelectric plant in Attapeu Province, Laos.
- 2015
Engie identified as controlling shareholder
[1]Engie was reported to hold a 69.11% stake in Glow Energy, making Glow a subsidiary of the French energy group.
- 1993
Company established
[1]Glow Energy was established as a Thai power and utilities company.
Products and positioning
A large Thai private power generator and industrial utility provider combining contracted electricity sales with cogeneration and the supply of steam and processed water.
Power generation
Electricity generation
Electricity generation was Glow Energy's core activity. The company supplied power to EGAT through power purchase agreements and also delivered electricity directly to industrial customers. Its generation portfolio included natural-gas-fired and coal-fired assets, as well as hydroelectric and increasingly solar generation. Electricity was the company's main commercial output and accounted for more than 85.4% of reported revenue in 2015.
Industrial utilities
Steam supply
Glow supplied process steam to industrial customers, particularly those located near its facilities in Thailand's eastern industrial provinces. Steam was produced as part of the company's cogeneration and industrial-utility operations, allowing customers to obtain electricity and thermal energy from an integrated supplier. Steam sales represented 12.1% of reported revenue in 2015.
Industrial utilities
Processed water
Processed water was supplied to industrial customers alongside electricity and steam. The offering formed part of Glow Energy's broader utility-service model for factories and industrial estates, although the available reference does not provide detailed specifications, volumes, pricing, or a separate financial contribution for this activity.
Renewable power generation
Hydroelectric power
Glow Energy operated a hydroelectric plant in Attapeu Province, Laos. The available material identifies the facility as part of Glow's international operating footprint but does not provide its individual capacity, commissioning date, ownership structure, or production figures.
Renewable power generation
Solar power generation
Solar generation was described as an increasingly important component of Glow Energy's energy mix. The reference does not identify individual solar projects, locations, capacity, launch dates, or output, so the available evidence supports only a general description of solar expansion rather than a defined product line.
Sources1 sources
Cite this profile: Cite the canonical profile. /brand-wiki/glow-energy · Editorial policy · How profiles are compiled