Summary

• Introduction to today’s webinar.0:02
  • Welcome to the webinar.
  • About engineering for change and its mission.
• Intro to the webinar.2:28
  • Get familiar with the critical functions, including chat.
  • Welcome to the webinar.
  • Introduction of the guests and the topic.
  • Introductions of the guest speakers.
• What Is energy poverty?7:12
  • Access to electricity is a form of energy poverty.
  • 70% of the people without access to electricity live in
  • Rural electrification in the United States and off-grid electrification on the navajo nation.
  • The challenges and opportunities.
• Derek’s introduction.12:39
  • Renewable energy specialists for the navajo nation.
  • 31% of homes lack complete plumbing and water.
  • The navajo nation and the hopi reservation.
  • The importance of renewable energy.
• How much does it cost to run a solar home?17:17
  • Average household income is above $8,000, not per month.
  • 能源效率和可持续性。
  • The challenges of traveling on navajo.
  • The main importance of solar is light.
  • Three days of autonomy for the system.
  • The importance of family reliable electricity.
• The off-grid systems themselves.23:53
  • The off-grid systems themselves.
  • Data going to the homes exceeds the power going to homes.
  • Diversity in energy consumption in the navajo nation.
  • Energy consumption over the two-year period.
• How much energy are homes consuming?30:15
  • Energy consumption on the ac side of the system.
  • Energy on the dc side.
• Daily energy consumption for homes.33:29
  • Homes consumed a wide variety of energy.
  • Load profiles of 25 homes.
  • Consistency of load from one season to the next.
  • Design of the arrays.
• Battery bank sizing and autonomy.39:34
  • Battery bank size and days of autonomy.
  • Service costs and maintenance costs.
  • Analyzing battery voltage profiles for reliability of the system.
  • Time series analysis for battery.
• What’s next for this work?46:11
  • Average daily consumption of electricity in sub-Saharan Africa.
  • Next steps for the study.
  • Contact informations and Q and a.
  • Who finances the MTU and revenue model.
  • Designing standalone systems for some households.
  • Understanding distribution of energy consumption.
• Batteries and maintenance.52:26
  • The lifespan of the batteries, especially maintenance-free batteries.
  • Maintenance-free battery agm.
  • Two questions from the audience.
  • Tools and resources for designing systems without historical data.
• Load estimation and load estimation tools.58:15
  • Webinar series for engineering for change, load estimation.
  • Data flows before the monitoring system.
  • 50 fields of data for each unit of data.
  • 20 more questions left unanswered.