Hatim Altarteer
Associate Drilling Engineer
Saudi Aramco
Hatim Altarteer is a Drilling Engineer at Saudi Aramco with a Bachelor of Engineering in Petroleum Engineering. He applies digitalisation and circular-economy principles across energy operations through advanced data analytics. He is particularly interested in sustainable innovation, data-driven optimisation, and the role of digital solutions in the energy transition.
Participates in
TECHNICAL PROGRAMME | Energy Leadership
Energy Access for All
Forum 25 | Digital Poster Plaza 5
27
April
15:30
17:30
UTC+3
Many communities in hot climates face rising night-time temperatures. Standard energy-access measures, such as annual kilowatt-hours or the number of grid connections, do not show whether people can sleep safely during heat waves or power outages. This paper introduces safe-sleep hours (SSH), a simple outcome measure defined as the hours between sunset and sunrise when indoor conditions stay below heat-stress limits and the power supply does not fail. Thresholds are evaluated using established comfort and health methods, including ASHRAE Standard 55 for thermal acceptability and the wet-bulb globe temperature screening method in ISO 7243. Bedroom setpoints in the range 25–28 °C at moderate humidity reflect evidence that cooler nights reduce illness, mortality, and sleep disruption. Humid heat is particularly hazardous, and extreme wet-bulb conditions can become life-threatening within hours. With more than one billion people lacking reliable access to cooling, SSH offers an objective benchmark that aligns energy planning with public-health protection at night.
To make SSH practical, the paper presents a cooling design for small power systems that combine solar panels, modest batteries, and compact thermal storage with very efficient local cooling for residential areas. The design goal is not simply to deliver more energy but to provide the most SSH at the lowest overall cost and also provide the minimum energy needed for such residential area of 100–300 watt. Different cooling design setups are compared. In tough conditions such as humid nights, haze that reduces solar output, or multi-hour evening outages, designs that make and store cold during the day keep residential areas safer for longer and need smaller batteries to reach the same level of reliability. This approach is promising for low-income and underserved communities in both hot-humid and hot-arid regions.
The paper also outlines ways to pay for verified results. Support can be linked to measured SSH, with extra help triggered on official heat-alert nights through bill credits or service contracts that guarantee a minimum number of safe-sleep hours. By shifting the focus from generic energy delivered to proven night-time safety, the work connects electrification, resilience, and public health and offers a practical path to protect sleep in a warming world.
Co-author/s:
Abdulrahman Tayar, Offshore Drilling Supervisor, Saudi Aramco.
To make SSH practical, the paper presents a cooling design for small power systems that combine solar panels, modest batteries, and compact thermal storage with very efficient local cooling for residential areas. The design goal is not simply to deliver more energy but to provide the most SSH at the lowest overall cost and also provide the minimum energy needed for such residential area of 100–300 watt. Different cooling design setups are compared. In tough conditions such as humid nights, haze that reduces solar output, or multi-hour evening outages, designs that make and store cold during the day keep residential areas safer for longer and need smaller batteries to reach the same level of reliability. This approach is promising for low-income and underserved communities in both hot-humid and hot-arid regions.
The paper also outlines ways to pay for verified results. Support can be linked to measured SSH, with extra help triggered on official heat-alert nights through bill credits or service contracts that guarantee a minimum number of safe-sleep hours. By shifting the focus from generic energy delivered to proven night-time safety, the work connects electrification, resilience, and public health and offers a practical path to protect sleep in a warming world.
Co-author/s:
Abdulrahman Tayar, Offshore Drilling Supervisor, Saudi Aramco.
