PER, EPS, PBR and BPS are calculated in-house from the last 4 quarters (2025Q3–2026Q2) · Dividend yield is based on ₩40 per share · Prices as of the 2026-10-02 close
GSE holds an exclusive city gas supply franchise in western South Gyeongsang Province, giving it a stable revenue base, but its earnings are concentrated in the winter peak season and remain highly sensitive to swings in international LNG prices.
GSE is a regional monopoly city gas distributor supplying an area equal to 48.3% of South Gyeongsang Province, including Jinju and Sacheon, using natural gas purchased from KOGAS.
2025 consolidated revenue reached KRW 170.0bn and operating profit KRW 7.3bn (4.3% margin), an improvement over 2024, though net profit has not yet returned to 2022-2023 levels.
Quarterly results are heavily concentrated in the winter-peak first quarter, while the summer off-season third quarter has repeatedly posted operating losses.
Since 2026, Middle East geopolitical risk has driven a sharp rise in international LNG prices and domestic wholesale rates for industrial and power-generation gas, while the government has kept residential and general-use tariffs frozen.
FnGuide cited the expansion of GSE's western Gyeongnam supply area and the growth of the aerospace industry cluster as a mid- to long-term source of industrial demand.
GSE is a regional city gas distributor centered on western South Gyeongsang Province. Its core business is purchasing natural gas from KOGAS and selling it to residential, commercial, and industrial end-users, with the LNG supply segment accounting for the large majority of revenue.
Its franchise area covers Jinju, Sacheon, and other locations equal to 48.3% of the entire area of South Gyeongsang Province, giving it a stable demand base underpinned by a regional monopoly pipeline network.
The company was founded in 1989 as a network systems provider and listed on KOSDAQ in 2001, before later shifting its core business to city gas supply, which remains its sole core operation today.
Industrial demand centers within its franchise area include the Sacheon industrial complex, an aerospace cluster linked to Korea Aerospace Industries (KAI), and shipbuilding complexes, suggesting a meaningful industrial revenue contribution alongside residential demand.
Because city gas franchises are exclusive by region, GSE does not compete directly with other regional operators such as Seoul City Gas, Incheon City Gas, or Daesung Energy; its business risk centers more on local economic and industrial demand swings and the regulated tariff structure than on direct competition.
It also operates ancillary businesses such as CNG charging stations, though their revenue contribution appears limited. Reflecting the regulated nature of the industry, feedstock costs are tied to wholesale rates set by KOGAS, while retail supply costs require approval from local government authorities.
| Quarter | Revenue | Operating profit | Op. margin |
|---|---|---|---|
| 2025Q2 | ₩30.9B | ₩1.6B | 5.2% |
| 2025Q3 | ₩19.4B | -₩1.5B | −7.5% |
| 2025Q4 | ₩45.8B | ₩1.6B | 3.4% |
| 2026Q1 | ₩71.5B | ₩5.4B | 7.6% |
| 2026Q2 | ₩36.3B | ₩2B | 5.4% |
| Year | Revenue | Operating profit | Net income (parent) | Op. margin | ROE | Debt-to-equity |
|---|---|---|---|---|---|---|
| 2022 | ₩172.6B | ₩4.6B | ₩5.9B | 2.7% | 6.7% | 130.9% |
| 2023 | ₩168.8B | ₩4.4B | ₩5.6B | 2.6% | 6.0% | 126.1% |
| 2024 | ₩155.6B | ₩4.9B | ₩3.6B | 3.2% | 3.8% | 152.5% |
| 2025 | ₩170.1B | ₩7.3B | ₩3.9B | 4.3% | 4.0% | 141.4% |
Consolidated basis (financial statements including subsidiaries) · Final figures from DART filings · Net income attributable to owners of the parent · Data as of 2026-08-23
GSE's 2025 consolidated revenue reached KRW 170.08bn, up from KRW 155.62bn in 2024, while operating profit rose to KRW 7.34bn from KRW 4.91bn a year earlier, lifting the operating margin from 3.2% to 4.3%.
However, net profit attributable to owners came to KRW 3.88bn in 2025, higher than the KRW 3.56bn recorded in 2024 but still below the KRW 5.90bn and KRW 5.59bn posted in 2022 and 2023 respectively, indicating that profit recovery has not fully kept pace with revenue and operating profit growth.
The debt ratio rose from 130.9% in 2022 to 152.5% in 2024 before easing slightly to 141.4% in 2025. On a quarterly basis, the city gas business shows pronounced seasonality.
In the off-season third quarter of 2025, revenue was KRW 19.4bn with an operating loss of KRW 1.47bn and a net loss of KRW 1.44bn, consistent with the typical seasonal pattern in the industry where heating demand largely disappears in summer.
By contrast, the winter-peak first quarter of 2026 saw revenue of KRW 71.5bn, operating profit of KRW 5.44bn, and net profit of KRW 4.14bn, reaffirming a structure where a large share of annual results is concentrated in a single quarter.
Notably, the fourth quarter of 2025 posted an operating profit of KRW 1.57bn yet a net loss of roughly KRW 0.5bn, illustrating how non-operating factors can amplify quarterly net profit volatility.
Combined net profit attributable to owners over the most recent four quarters (Q3 2025 through Q2 2026) totaled KRW 3.96bn, close to the full-year 2025 figure and suggesting the earnings recovery trend has continued.
In 2026, Korea's city gas industry is exposed to a strong external variable in the form of a sharp rise in international LNG prices driven by Middle East geopolitical risk.
According to KOGAS, the wholesale rate for power-generation natural gas rose to KRW 19,379 per gigajoule (GJ) in June, up 7.9% month-on-month, and compared with the March rate of roughly KRW 16,048 per GJ set before the Middle East conflict intensified, this represents an increase of about 20.1%.
The JKM marker, the spot price benchmark for East Asian LNG, rose from USD 10.7 per MMBtu on February 27 to USD 18.6 per MMBtu by early June.
The Korea Energy Economics Institute forecast that even if the Hormuz blockade ends by late June, Korea's LNG import unit price would rise to roughly KRW 18,700-22,500 per GJ by October before gradually stabilizing toward year-end.
However, the government has kept residential and general-use tariffs frozen out of concern for public burden, while reflecting cost pressure mainly through industrial and power-generation rates, meaning regional distributors with meaningful industrial exposure, such as GSE, are more directly affected by feedstock cost increases in terms of revenue volume.
Qatar is the single largest source among Korea's long-term LNG contracts, accounting for roughly 6.1 million tonnes, or 17%, as of 2026, so delays in repairing damaged Middle East production facilities could heighten uncertainty around Korea's overall LNG supply.
Competitively, GSE holds an exclusive regional franchise and does not compete directly with other regional distributors such as Seoul City Gas, Incheon City Gas, or Daesung Energy; its results instead hinge more on industrial demand and temperature within its own franchise area.
FnGuide projects that gas demand in 2026 will grow mainly on the back of industrial natural gas use, viewing the expansion of GSE's western Gyeongnam franchise area and the growth of the aerospace industry cluster as the basis for the company's mid- to long-term growth.
This aligns with ongoing development of an aerospace industrial complex centered on KAI in the Jinju-Sacheon area, which could broaden the base of industrial gas demand. In the near term, however, international LNG price swings are expected to have a larger impact on results.
The Korea Energy Economics Institute forecast that even if Middle East geopolitical uncertainty partially eases, Korea's LNG import unit price would stay elevated through October before gradually stabilizing toward year-end.
This implies feedstock cost pressure could persist heading into the winter peak season (Q4 through Q1 of the following year), and the timing and extent of pass-through to retail rates under the cost pass-through mechanism will be a variable affecting margins from the fourth quarter onward.
As the government continues to freeze residential and general-use tariffs while reflecting cost changes mainly through industrial and power-generation rates, this policy direction is expected to keep influencing GSE's revenue and cost structure given its industrial demand exposure.
If force-majeure disruptions at Middle East supply sources such as Qatar persist, uncertainty over Korea's overall LNG supply could increase, remaining a variable to monitor from a cost and procurement stability standpoint.
GSE's price-to-book ratio is understood to trade in a range below its multi-year average multiple, indicating the share price has formed at a discount relative to net asset value.
On the earnings side, following a slowdown in net profit through 2022-2024, 2025 and the most recent four quarters have shown a gradual recovery, and whether this recovery continues is cited as a factor that could influence how the market values the multiple.
On dividends, the yield has generally stayed close to or somewhat above its five-year average, reflecting a relatively stable cash dividend policy typical of the city gas sector.
That said, a debt ratio in the high-100% range indicates financial leverage that is not negligible and should be weighed alongside net asset value. How the traded multiple should be interpreted may vary depending on individual assessments of seasonal earnings swings and feedstock cost variables.
PER, EPS, PBR and BPS are all calculated in-house (the same method as Naver and Toss) · Dividend yield = cash dividend per share from DART filings (supplemented by KRX) ÷ current price · As of 2026-08-23
In the first quarter of 2026, revenue reached KRW 71.5bn with operating profit of KRW 5.44bn and net profit of KRW 4.14bn, meaning a large share of the trailing four quarters' profit was concentrated in a single quarter. The annual operating margin also improved from 2.7% in 2022 to 4.3% in 2025. If winter heating demand remains solid, this seasonal peak effect could recur.
FnGuide cited the expansion of GSE's western Gyeongnam franchise area and the growth of the aerospace cluster as a mid- to long-term growth basis.
Industrial demand centers such as the Sacheon industrial complex, the KAI aerospace cluster, and shipbuilding complexes are already present within its franchise area, so new industrial demand could broaden the revenue base. This could serve as a relatively stable revenue growth driver compared with residential demand alone.
Because city gas franchises are exclusive by region, GSE does not compete directly with other regional operators such as Seoul City Gas or Incheon City Gas. This structure lowers the risk of market share erosion from new entrants.
Revenue stability depends more on local economic, demographic, and industrial demand trends than on competitive dynamics.
In the fourth quarter of 2025, despite an operating profit of KRW 1.57bn, net profit swung to a loss of roughly KRW 0.5bn. This illustrates that non-operating factors can materially affect quarterly net profit. It suggests operating profit improvement does not automatically translate into net profit improvement.
The debt ratio rose from 130.9% in 2022 to 152.5% in 2024 before easing slightly to 141.4% in 2025, but it remains in the high-100% range. Given the ongoing pipeline and facility investment typical of a regulated utility, leverage management remains an area requiring continued attention. Changes in the interest rate environment could affect net profit through interest expense.
In the third quarter of 2025, revenue was KRW 19.4bn with an operating loss of KRW 1.47bn and a net loss of KRW 1.44bn, reflecting a recurring off-season loss pattern. This seasonal swing makes quarterly results difficult to predict. Unusual summer weather or a mild winter could also affect annual performance.
International LNG prices have fluctuated sharply over short periods due to Middle East geopolitical risk, and changes in the won-dollar exchange rate also directly affect feedstock costs.
While feedstock costs are linked to wholesale rates, a time lag in pass-through means cost burdens can temporarily rise during price spikes. This can affect both revenue volume and margins.
As the government maintains a policy of freezing residential and general-use tariffs out of inflation concerns, cost increases are being reflected mainly through industrial and power-generation rates. If this policy direction persists, it could affect GSE's revenue structure given its industrial demand exposure.
The timing and magnitude of rate adjustments depend on policy variables such as local government approval procedures.
City gas demand, particularly for heating, is highly dependent on temperature, and quarterly results vary significantly with the severity of winter cold. A sustained mild winter due to unusual climate patterns could reduce the peak-season earnings contribution. Conversely, an extreme cold wave could temporarily boost results, creating forecasting uncertainty.
A point to check whether international LNG (JKM) import prices actually stabilize as forecast by the Korea Energy Economics Institute, an important variable for gauging fourth-quarter cost pressure.
The Q3 2026 report disclosure will show post-off-season profitability, with the key question being whether a loss pattern similar to Q3 2025 repeats.
A point to check announcements from the Ministry of Trade, Industry and Energy and local governments on city gas retail (feedstock) rate adjustments, with the key issue being whether further industrial and power-generation rate hikes are reflected.
The Q4 and full-year 2026 business report disclosure will reveal how winter peak-season demand and tariff pass-through effects showed up in results.
GSE is a city gas distributor with a stable revenue base underpinned by its regional monopoly franchise in western South Gyeongsang Province, having improved its operating margin to 4.3% in 2025 with a gradual net profit recovery over the trailing four quarters.
However, net profit has not yet returned to 2022-2023 levels, and the debt ratio remains in the high-100% range, keeping financial leverage management in focus.
Results show pronounced seasonality, concentrated in the winter peak season with recurring operating losses in the summer off-season, alongside non-operating volatility such as the Q4 2025 case where an operating profit still resulted in a net loss.
In 2026, a surge in international LNG prices driven by Middle East geopolitical risk has led to higher industrial and power-generation wholesale rates, while the government maintains frozen residential and general-use tariffs, putting feedstock costs and regulatory policy simultaneously in play for earnings.
The expansion of the western Gyeongnam franchise area and the growth of the aerospace cluster are cited as mid- to long-term industrial demand drivers, though the timing and scale of their impact on results still require confirmation.
Investors may want to monitor upcoming seasonal off-peak and peak-season results, the timing of international LNG price stabilization, and changes in tariff policy.
Report written 2026-09-05 · Data as of 2026-09-04
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