13.2.2 Low-carbon energy use
In 2025, Srinakharinwirot University (SWU) measured its low-carbon energy use across the University. The total energy used in 2025 was 200,559 gigajoules (GJ), and the total energy used from low-carbon sources was 466 GJ, about 0.23% of the total energy used. All of the low-carbon energy is renewable electricity from solar power generation on campus. Both figures are given in Gigajoule (GJ) and rounded to the nearest gigajoule, and they come from the University’s monthly energy records on the SWU SDG Sustainability Web App dashboard (filtered for 2025, B.E. 2568) and from the monitoring application of a smaller solar system.
1. Total energy used in 2025
The total energy used includes both the energy purchased by the University and the energy generated by the University. SWU records the monthly electricity consumed by the University at its two campuses, Prasarnmit Campus in Bangkok and Ongkharak Campus in Nakhon Nayok, on the SWU SDG Sustainability Web App dashboard. In 2025, the University used 55,710,830 kWh of electricity, equal to 200,559 GJ (1 kWh = 0.0036 GJ): 102,953 GJ at Prasarnmit Campus and 97,606 GJ at Ongkharak Campus. This total covers the purchased electricity consumed by the University and the electricity generated by the solar PV systems that are owned and controlled by the University.
Figure 1. SWU SDG Sustainability Web App dashboard: total electricity consumption in 2025 (B.E. 2568) by campus and by month (GJ).
Source: https://script.google.com/macros/s/AKfycby53PzkcT8eUJD9a933GyE_59Tyse0n8TG1QjRJUxyqwEYqK_xBcjTKrLDgHnuEIs7G/exec
The electricity figure for Ongkharak Campus is also published on the public electricity statistics page of the Sustainable Development Office, Office of the President, which reports 27,112,842.19 kWh for 2025 (B.E. 2568), the same figure used in the University total and reported as the annual electricity use of Ongkharak Campus in the University’s Sustainable University Performance Report, Academic Year 2568 (UI GreenMetric), page 16.
Figure 2. Public electricity statistics of SWU Ongkharak Campus, Sustainable Development Office, showing 27,112,842.19 kWh of electricity used in 2025 (B.E. 2568) (highlighted).
Source: https://sd.op.swu.ac.th/electricity_statistics
2. Total energy used from low-carbon sources in 2025
SWU’s energy from low-carbon sources is renewable electricity from solar power, a power generation source listed as low-carbon in the THE guidance. At Ongkharak Campus, solar PV systems on the Administration Building and the HRH Princess Maha Chakri Sirindhorn Medical Center generated 128,773.89 kWh (463.59 GJ) in 2025. Only 162.83 kWh of this was exported to the grid, so almost all of the solar electricity was used in University buildings. The Administration Building system supplied about 14% of the building’s electricity use over the year (38,879.99 kWh), and generation from the system at the Medical Center has been recorded since November 2025 (89,893.90 kWh in the last two months of the year).
Figure 3. SWU SDG Sustainability Web App dashboard: monthly electricity generated by solar PV systems at Ongkharak Campus in 2025 (B.E. 2568), by building, with electricity exported to the grid and the building’s actual electricity use (GJ).
Source: https://script.google.com/macros/s/AKfycby53PzkcT8eUJD9a933GyE_59Tyse0n8TG1QjRJUxyqwEYqK_xBcjTKrLDgHnuEIs7G/exec
The solar system at the University’s bioshop generated a further 721.27 kWh (2.60 GJ) of renewable electricity in 2025, all of which was used on site, according to its inverter monitoring application.
Figure 4. Inverter monitoring application of the bioshop solar system: electricity generated in 2025, by month (total 721.27 kWh).
Source: Solar inverter monitoring application, bioshop solar system (screenshot taken October 2026)
3. Low-carbon energy use in 2025
The energy counted as low-carbon is renewable electricity from solar power only. It does not include energy from fossil fuels or from forest-derived biomass.
Total energy used in 2025: 200,559 GJ (55,710,830 kWh of electricity).
Total energy used from low-carbon sources in 2025: 466 GJ (129,495.16 kWh of solar electricity: 463.59 GJ at Ongkharak Campus and 2.60 GJ at the bioshop).
Share of energy from low-carbon sources: about 0.23%.
These figures are tracked under the SWU Zero Carbon policy, announced on 13 December 2024, which commits the University to promote alternative energy such as solar cells and floating solar systems and to reduce electricity use by 5% each year. The energy data are published on the University’s online dashboard, so the evidence is publicly available.