Validated by leaders in energy and public safety
A selection of clients we serve and representative delivery cases (in no particular order).
Clients we serve
Spanning power grids, generation groups, oil & gas fields, pipeline networks, customs, fire rescue and urban transport.
Power grids & generation groups
- State Grid · Hubei
- State Grid · Xinjiang
- State Grid · Zhejiang
- State Grid · Shanxi
- State Grid · Gansu
- State Grid · Hunan
- State Grid · Jibei
- State Grid · Chengdu
- State Grid · Ningbo
- State Grid · Hangzhou
- State Grid · Jiaxing
- State Grid · Huzhou
- CSG · Yunnan
- CSG · Guangzhou
- Zheneng Taizhou
- Guoneng Guohua Beijing
- Datang Wushashan
- CGN Ningde Nuclear
- Guoshen Xinjiang
- Shandong Electric
Oil, gas & pipelines
- PetroChina · Changqing
- PetroChina · Daqing
- PetroChina · Southwest
- PetroChina · Tarim
- PetroChina · Qinghai
- PetroChina · Liaohe
- Sinopec · Shengli
- PipeChina · West-East Gas
- PipeChina · Western Pipeline
- PipeChina · Shandong
- PipeChina · Henan
- Saudi Aramco
- Shell
- Chevron
- PETRONAS
- BASF
Public safety & urban operations
- Qianjiang Customs
- Hangzhou Fire Rescue
- Hangzhou Metro
- Nanjing Traffic Police
- Hangzhou Traffic Police
- Nanjing Transport Enforcement
Partner note: Rokid (Hangzhou Lingban Technology) is JoHan's strategic partner in AR terminals. Among the clients listed, some projects were delivered by JoHan as the industry solution provider responsible for scenario delivery and localized deployment; related brand honors and patents belong to Rokid.
Representative cases
Changqing Oilfield · AR Smart O&M
Since 2022 we have worked with Changqing Oilfield (digitalization department and secondary units) to explore AR scenarios in oil & gas, establishing a "two systems, phased build-out" roadmap.
- Phase 1 Remote expert: visual remote guidance, less travel for experts
- Phase 2 Smart inspection: standardized end-to-end inspection support with auto-generated reports
- Phase 3 AR training: standard operating guidance plus real-scene practice
- Phase 4 AI assistant: an oil & gas domain LLM, ask by voice and get an answer
State Grid Dual-Carbon Green Energy Center
An integrated energy station built on existing substations, distribution stations, switching stations and service halls, incorporating data centers, PV and storage, and applying internet, big data, cloud computing and AI to create a green energy hub.
- Aggregates distributed energy and storage from nearby industrial parks
- Optimizes system operation through forecasting and dispatch algorithms
- Participates flexibly in demand-side response to raise per-station revenue
- Delivered system supports 800MW of distributed resource aggregation
PV cloud platform power forecasting POC
Forecasting capability supplied to the PV cloud platform of a leading domestic distributed PV O&M provider, a platform that already connects over 30,000 PV stations with more than 10GW installed.
- Considers season, date, time, weather type, temperature and similar-day output profiles
- Mid-, short- and ultra-short-term forecasting services
- Roughly 95% average accuracy in testing, surfacing generation anomalies early
- Higher O&M efficiency and accumulated operational data
