Cambodia signs plan for solar street lighting across about 1,000 km

The rollout targets national roads, ring roads and selected urban areas

The announced coverage includes sections of National Roads 5, 6, 7 and 21, plus Phnom Penh's second and third ring roads. On National Road 5, the plan identifies stretches linking the Phnom Penh-Kandal area with Kampong Chhnang and routes farther west toward Battambang and Banteay Meanchey. National Road 6 includes sections around Cheung Prey, the Kampong Thom boundary, Chi Kraeng and Serei Saophoan.

Other named corridors include National Road 7 from the Cheung Prey area to Kampong Cham city and National Road 21 from Takhmao toward the Vietnamese border. The programme also covers selected urban roads and tourism areas in Kampong Speu, Takeo, Preah Sihanouk, Koh Kong, Kampot and Kep. Officials have described the wider rollout as an expansion of earlier solar-lighting work on National Road 5 in Pursat.

For practical context, see Cambodia market and country comparisons. This development also connects with Phnom Penh launches 2026–2030 tourism development plan.

Residents should separate the plan from conditions on the road today

The practical promise is straightforward: better night-time visibility on roads and public spaces that lack adequate lighting. Cambodian authorities have linked the project to road safety, public security and evening activity, but those are intended benefits; the memorandum itself does not show that they have already been achieved across the planned network.

For someone choosing a neighbourhood, commuting route or business location, the useful question is whether the exact road section is already lit and maintained. The July agreement establishes a programme and its broad geography, not a completed asset. Maintenance will also matter after construction because the plan calls for the installed systems to be transferred to the transport ministry and the relevant local administrations.