down
Is Huaneng Power International down?
Huaneng Power International, Inc., commonly known as Huaneng Power, is a Chinese electric power company
https://www.hpi.com.cn/Pages/default.aspx ↗A public website resource responded; the application, sign-in, and APIs were not tested.
Service disruption activity for Huaneng Power International
Last 24 hoursObserved disruption signals combine available incidents, recorded reports, website checks, and emerging problem patterns. A low score does not guarantee that every feature is working.
Latest observation: 2026-11-08 15:51:59 UTC. Refreshes automatically while this page is visible.
No user-submitted outage reports in the last 24 hours.
Huaneng Power International outage history
2025–2026Daily history over the past 12 months. Select a day for its evidence.
Select a square for daily details. Scroll sideways to explore earlier months.
How to read this calendar
Dates use New York time (America/New_York). Green means no issues observed with sufficient monitoring coverage; it does not guarantee uninterrupted uptime. Pink includes official incidents, repeated website failures, or corroborated user reports. Gray days are unknown. Activity estimates alone do not turn a day pink. Today’s result can change.
Huaneng Power International website uptime and response time
Website responded successfully HTTP 200. Last checked 2026-11-08 15:51:59 UTC.
Public endpoint monitoring — this lightweight resource measures website connectivity and response time. It does not test the application, login, or API. Check official component status below for product availability.
Checked address: https://www.hpi.com.cn/Pages/default.aspx
DNS lookup: 620 ms · TCP connection: 475 ms · TLS handshake: 476 ms. Certificate expires 2026-11-29; trusted connection: yes.
91.7%
Successful website checks (24h)
22 successful / 24 measurable checks
2829 ms
Median response time
9815 ms
95th percentile response time
2 failed checks; 0 restricted checks. Restricted checks are excluded from the success rate. Lines connect recorded samples across gaps; availability between checks is unknown. Response time measures receipt of HTTP headers, not full page load. Checks run from one US monitoring server and do not verify sign-in, API, or app features. These sampled results are separate from down reports and estimated activity.
Evidence behind the status
Website reachable in latest check. A public website resource responded; the application, sign-in, and APIs were not tested.
Website checks and estimated activity have independent update times. Refer to each section for its latest observation.
These measurements describe different things. A reachable homepage can coexist with login or API failures. Missing evidence stays unknown.
Official component status
No mapped official components are available for this product. Parent-company status is not substituted for product status.
Official incident timeline
No product-matched incidents are available in the collected provider history. This does not prove that no incident occurred.
Recovery tracker
No recent recovery can be established from available evidence.
1 consecutive successful checks within the last 30 minutes. These checks measure the public website; they cannot establish recovery of every feature.
Slowdown detection
No sustained slowdown has been established against the earlier baseline.
Recent median: 2847 ms · Earlier median: 2829 ms. Flags require at least 3 recent and 5 earlier checks, more than twice the baseline, and at least 500 ms extra latency. Slowness alone does not identify server load as the cause.
Emerging down-report signals
No recent emerging problem patterns are available for this service.
Emerging problem patterns can persist after an incident and do not measure report counts or prove an outage.
Is it down in your region?
Run one public website check from a community probe. Results describe that probe, not every user in a country.
Results are reused for 15 minutes. Shared free allowance: up to 60 tests per hour. A successful website check does not verify authenticated app or API functions.
Infrastructure incident context
Check whether broader platform incidents coincide with the problem you are seeing. These providers are context, not verified dependencies of Huaneng Power International.
No active incidents recorded.
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About Huaneng Power International status on Iszdown
Huaneng Power International, Inc., commonly known as Huaneng Power, is a Chinese electric power company. It was established in 1994 by the China Huaneng Group, one of the five largest power producers in China. It engages in the development, construction and operation of large power plants. As of 31 May 2018, the market capitalization of its H share was HK$28.484 billion. As of 31 December 2017, about 30.92% of total share capital are "foreign share", while the rest were domestic share. Huaneng Power's H share is a component of Hang Seng China Enterprises Index, representing 50 largest H share companies on the Stock Exchange of Hong Kong. However, under different selection criteria, Huaneng Power's A share is a component of SSE SmallCap Index since May 2018, an index for next 320 shares that were not included in SSE 180 Index. Huaneng Power was ranked 745th in 2018 Forbes Global 2000.
This page combines the available Huaneng Power International report activity, official product status, public website measurements, and daily history. Each measurement has its own observation time. A search spike alone does not confirm downtime, and a reachable website does not establish that sign-in or every product feature works.
No mapped official components are available for this service. Latest public website measurement: 2026-11-08T15:51:59.000Z.
Visit the official Huaneng Power International website · How it works
What to check when Huaneng Power International is not working
These are troubleshooting suggestions, not a list of currently reported problems.
Huaneng Power International will not open
Compare your usual browser or app with a private browser window, then try another network if available. Save unsent work first. A difference between networks can help separate a local connection problem from a wider disruption.
Huaneng Power International is slow or only one feature fails
Record the affected action, exact error, and time. Compare the website response measurements with any official component incidents; loading a homepage does not test every feature.
Website troubleshooting guide · Sign-in problems · API errors and timeouts
Include the time, affected feature, and error message when contacting official support. Keep passwords, payment information, session cookies, and access tokens private.
Recent Huaneng Power International outage history
No product-matched official incidents have been archived for this service in the displayed history. This does not establish that it has never had an outage. See the daily calendar for other available evidence.
Frequently asked questions about Huaneng Power International
Is Huaneng Power International down right now?
Website reachable in latest check. A public website resource responded; the application, sign-in, and APIs were not tested. This page was assembled at 2026-11-08T15:57:37.000Z.
How many Huaneng Power International outage reports are there today?
The displayed rolling 24-hour window contains 0 recorded reports, from 2026-11-07T15:50:00.000Z to 2026-11-08T15:50:00.000Z. This is not a calendar-day total or a count of affected people. Estimated activity is shown separately as an estimate.
Why does Huaneng Power International show operational when it is not working for me?
An official operational status can coexist with a local network issue, account problem, or feature-specific incident. Compare the mapped components, recent incident updates, and regional diagnostic on this page. Automated website checks test public access, not your signed-in session or every Huaneng Power International feature.
When was Huaneng Power International status last updated?
No current product status observation is available for Huaneng Power International. Reports, estimated activity, and website checks can provide additional context.
Has Huaneng Power International had outages before?
The daily calendar links available incident evidence and retains daily monitoring summaries. Pink marks service issues, green requires sufficient observations with no issues observed, and gray means insufficient coverage. The collected history is incomplete and is not a lifetime outage count or a guarantee of uninterrupted uptime.
How do I follow Huaneng Power International or report a problem?
Use “Watch this service” to save Huaneng Power International in this browser’s watchlist, then return to compare its status with other saved services. Optional browser notifications can flag status changes while the watchlist page stays open and visible; background alerts are not sent. Use the problem-report button for an outage report; contact the provider through its official website for account, billing, or private support issues. Iszdown is independent and cannot resolve provider support tickets.
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Check a related product separately; its status can differ from Huaneng Power International.