2016年-世界发展银行全球_The_Power_System_in_the_Eye_of_the_Storm___The_Call_for_Energy_Resilience_and_Climate_Adaptation_in_Belize_58页_1005kb

Summary of THE POWER SYSTEM IN THE EYE OF THE STORM: The Call for Energy Resilience and Climate Adaptation in Belize

Core Content

This document outlines the vulnerabilities of Belize's power system to extreme weather events and the urgent need for climate adaptation and energy resilience. It highlights the increasing frequency and intensity of hurricanes and tropical storms in the Caribbean, which pose significant threats to the country's infrastructure and economy. The analysis is conducted by the World Bank in collaboration with Belize Electricity Limited (BEL) and other stakeholders, and serves as a foundation for the Energy Resilience for Climate Adaptation Project (ERCAP).

Main Points

• Belize's Climate Vulnerability: Belize is located in the Caribbean and is highly exposed to extreme weather, including hurricanes and tropical storms. Climate change is expected to increase the intensity and frequency of such events, leading to more severe impacts on the country's infrastructure and economy.
• Impact of Extreme Weather on the Power Sector: Extreme weather events have caused significant damage to the power infrastructure, leading to widespread outages, financial losses, and disruptions in essential services.
• Historical Storms and Their Effects:
  • Hurricane Dean (2007): Caused a near country-wide electricity blackout, with 90% of recorded faults in the distribution system. It took nearly a week to fully restore services.
  • Hurricane Richard (2010): Resulted in damage to transmission and distribution lines, reducing BEL's ability to dispatch hydropower, which accounts for half of domestic capacity. Over 35,000 customers were affected.
  • Tropical Storm Alex (2010): Caused 10% reduction in electricity demand due to distribution system failures.
• Economic Impact: The financial and economic consequences of power outages include direct costs of repairs, lost utility revenue, and indirect GDP losses due to unserved energy. For example, Hurricane Dean and Richard caused estimated GDP losses of $3–5 million and $80 million respectively.
• Infrastructure Weaknesses:
  • The radial transmission system is a single circuit, making it prone to cascading outages.
  • Wooden poles and corrosion in metal fittings are weak points in the transmission network.
  • Vegetation management is a key issue, as fallen trees and branches damage infrastructure.
  • Distribution systems are especially vulnerable, with over 90% of faults during hurricanes occurring in this area.
• Operational Challenges: BEL's emergency response is hampered by outdated communication systems, limited access to damaged areas, and insufficient operational capabilities for rapid recovery.
• Project Overview: The Energy Resilience for Climate Adaptation Project (ERCAP) is designed to enhance the resilience of Belize's power system. It is supported by the World Bank through the Global Environment Facility (GEF) and the Energy Sector Management Assistance Program (ESMAP).

Key Vulnerabilities and Solutions

• Transmission System:
  • Needs to be segmented to prevent cascading outages.
  • Should be strengthened with more durable materials and regular maintenance.
• Vegetation Management:
  • Improved practices are necessary to prevent tree-related damage to power lines.
• Distribution System:
  • Must be reinforced to withstand extreme weather.
  • Upgrade to higher voltage networks in key cities like Belize City and Belmopan.
• Emergency Response and Recovery:
  • Need for a structured and rapid response plan.
  • Enhanced communication systems and access to infrastructure during disasters.

Key Figures and Data

• Total Installed Power Capacity: 110 MW, with 50 MW imported from Mexico.
• Peak Demand: ~86 MW, increasing by ~5% annually.
• Power Mix (2015):
  • Hydropower: 39%
  • Biomass: 14%
  • Diesel and fuel oil: 5%
  • Imports from Mexico: 42%
• Number of Storms (1864–2015):
  • 21 hurricanes (4–5 category: 25%)
  • 27 tropical storms
  • 9 tropical depressions
• GDP Impact of Storms:
  • Hurricane Dean: ~$3–5 million
  • Hurricane Richard: ~$80 million
  • Tropical Storm Alex: ~$300,000

Conclusion

Belize faces significant risks from climate change, particularly in the energy sector. The power system is highly vulnerable to extreme weather events, which have caused substantial economic and social disruptions. The Energy Resilience for Climate Adaptation Project (ERCAP) aims to address these vulnerabilities through targeted investments and improved operational strategies, ensuring a more resilient and reliable power supply in the face of future climate challenges.