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【Yiteng Energy Storage】Tesla Powerwall Home Energy Storage Case in Puerto Rico
创建于05.14
Puerto Rico Tesla Powerwall Home Energy Storage Case
——Rebuild the island's power grid with solar energy + energy storage to withstand hurricane power outage crises
Puerto Rico is a U.S. **commonwealth** (autonomous territory), belonging to the U.S. overseas territories, located in the eastern part of the Caribbean Greater Antilles, with an area of approximately 9,104 square kilometers and a population of about 3.22 million. It operates with internal autonomy as a U.S. commonwealth, but matters of sovereignty such as national defense and foreign affairs are governed by the U.S. federal government. Residents hold U.S. citizenship but cannot participate in the U.S. presidential elections. The economy relies on U.S. aid, with manufacturing (such as biomedicine) and tourism as pillar industries, and the GDP in 2021 was approximately $111 billion.
Background Pain Points:
"Dual Impact of 'Vulnerable Power Grid + Extreme Climate'"
1. Hurricane Threat: The 2017 Hurricane Maria destroyed Puerto Rico's power grid, leaving the entire island without electricity for months.
2. High electricity costs: Relying on imported diesel for power generation, residential electricity rates reach $0.28 per kWh (50% higher than the U.S. mainland).
3. Policy Promotion: The government subsidizes 40% of the energy storage equipment costs, accelerating the energy transition.
Solution:
"Solar Roof + Powerwall Home Microgrid"
1. Photovoltaic power generation: Each household installs 8-12kW solar panels, generating an average of 40-60 kWh per day.
2. Energy storage configuration: 2-4 Powerwalls per household (13.5kWh per unit), capable of supporting critical loads for 24 hours.
3. Off-grid mode: Automatically switches to independent power supply during a hurricane to ensure the operation of refrigerators and medical equipment.
Technical Highlights:
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“Powerwall can detect a power outage in 0.02 seconds and switch over, 100 times faster than a diesel generator.”
Achievement Data:
Index | Before Implementation | After implementation |
Household electricity cost | $200/month | $30/month (reduced by 85%) |
Power outage time | Annual average of 80 hours | Close to 0 hours |
Carbon emissions | 4 tons of CO₂ per household per year | 0 tons (100% green electricity) |
Disaster Recovery Capability | Depend on government rescue | Self-powered for 7 days |
Current deployment situation: (Unit: household)
Insights from the Latin American Market:
"Three Major Essential Needs for Energy Storage in Island Countries"
1. Disaster response: Urgent needs in the Caribbean/Central America hurricane-prone areas.
2. Decarbonization: Islands away from the mainland can save 30-50% on energy costs.
3. Policy dividends: Countries like Brazil and Chile have introduced similar subsidy policies.
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Photovoltaics + energy storage can transform households from 'disaster victims' into 'energy independents.'
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