Shasta Percival, Kendall Place, Inseon Lee
Mexico has a high potential for water and renewable energy development. However, only a small percentage of this nascent capacity has been used. Expanding renewables and innovation in water provision is critical for serving communities isolated from traditional infrastructure. Mexico City faces many challenges in mobility and transportation brought on by road privatization and over-crowding. Certain municipalities remain continuously underserved by public transportation efforts, limiting mobility and isolating communities. In this section we will analyze these issues, discuss their root causes, and discuss how design can confront them.
Mexico City is one of the world’s largest cities with over 21 million people. When the Spanish colonized in Mexico in the 1500’s, they dried out the lakebed to create a bigger city. Mexico City is located more than 6,500 feet above sea level which causes a heavy wet season throughout the summer and oftentimes causing flash floods. But, what is interesting is that even though this city seems to be over flourished with water, they are in fact facing a huge water shortage because of the lack of proper infrastructure. 2/3rds of Mexico City’s water supply comes from aquifers while the other 1/3rd is imported from surface water 5 to 80 miles away in other cities, but eventually it is distributed to residents through a vast but quickly aging network of pipes that do not easily reach informal settlements. So, what happens when the aquifers start to dry up? There is a risk of lowering the humidity which can cause temperatures to rise and puts already struggling agriculture at risk. With higher temperatures, the water starts to disappear and makes an already thirsty city parched. This also causes the city to sink which causes an already fragile piping system to fail. The Emisor Central, the main piping system in Mexico City, is already corroded and overworked and is constantly being repaired. So, how do people get water other than the regular piping system that cannot keep up with the demand? Tandeo is a system in which they have “a turn” at water delivery through the city’s network, at specified times. For example, they may only have access to water for certain hours during the day and sometimes only once or twice a week. Pipas are government provided water trucks that deliver water to residents. These trucks, however, are very unreliable, not coming for weeks at a time without notice. For this reason, many families in these regions are living off of 20 L of water per day per person. To put that in perspective, the average person in the US takes an 8-minute shower each day, which consumes about 65 L of water! You can imagine the strain that it puts on individuals to divide their 20 L ration for drinking, doing laundry, washing hands, dishwashing, and sanitation purposes.
One recent contribution to help fix the water problem throughout Mexico City is the Emission Oriente. It is one of the world’s largest stormwater drainage and sewage tunnels that was built to prevent floods throughout Mexico City and its Metropolitan area. It was finally completed in 2019 after 11 years of construction. This is just the beginning to solving the many water issues throughout the city.
Suspension of service for long periods of time. For example, only being able to turn on the tap once or twice a week
Trucks transporting potable water on-demand to precarious zones, highly marginalized areas with no service at all and to geographically inaccessible locations. This can cost 500x more than regular piped water
They need to fix leaking infrastructure. 35-40% of the water supplied is lost due to leaks. This is caused by deteriorating pipes as well as illegal connections to the water system. Also, managing urbanization could have a lasting effect. Better communication between land-use management and water management agencies needs to happen so that the urban demand doesn’t further exceed how much water is available. Currently the city is stuck because of the miscommunication. Land decisions affect water and water decisions affect land and the agencies are not working together. Lastly, they need to cultivate a new supply of water in order to put less stress on the emptying aquifer. Rainwater harvesting is one that has already started to be implemented. The goal is to install 100,000 Rainwater Harvesting systems in various parts of the city in the next five-six years to demonstrate the feasibility of using decentralized and sustainable water management models to improve the living conditions of the neediest populations. While RWH will be an important factor in increasing water supplies in informal settlements and helping the city reduce its dependence on the stressed aquifer, Mexico City must still address its ongoing infrastructural and management challenges.
The Mexican electrical sector is federally owned and operated by Comision Federal De Electricidad (CFE), the 6th largest power company in the world and is responsible for 70% or all electricity systems produced in Mexico. The general electricity system breaks down from the generation, transmission, distribution and to consumers. 80% of the power supply comes from fossil fuels (80%), other sources are hydroelectric (10%), nuclear (4%), wind (3%) and other renewables (3%). The current power system conditions in Mexico City were mostly produced in the 1990s. Similar to other world regions, Mexico experienced improvements in the energy sector in power, gas and oil production during the 1990s. However, about 1.8 million people, 1.5% of the population in Mexico have no access to electricity, including three communities in the southern Tialpan, Mexico City. Many social businesses are looking at the possibility of providing access to electricity to those communities through renewable energy systems.
Power plants using fossil fuels provide most of Mexico’s electricity generation
Mexico had 16,406 MW of total renewable energy installed capacity in 2015
Mexico has one nuclear power plant, Laguna Verde. There are plans to expand Mexico’s nuclear generation capacity by building additional plants by 2028
In Mexico, there is a high renewable energy potential. Large scale hydroelectric dams are the largest source of renewable sources. Mexico is one of the top five most attractive countries in the world of possibility in photovoltaic (PV) solar power projects and has a high wind energy potential. However, only 1.7% of this potential is currently in use. In 2015, non-fossil electricity generation accounted for approximately 20% of Mexico’s electricity supply. CFE and the Mexican government set a goal to generate 35% of electricity from renewable sources by 2024. Most renewable energy sources are suitable for micro grid power systems, connecting directly to the distribution, which is cost effective at smaller scales and can help economically.
Most renewable sources are suitable for micro grid and now be cost effective at smaller scales when they are connected directly to the distribution to get to the grid.
Mexico City consists of various types of road networks that affect mobility by automobile. Common forms of local road networks include: geometric plan, grid blocks, organic form, and “informal” (bottom-up) development. In many cases, local road networks are indicative of an area’s socioeconomic status. Large-scale road networks connect municipalities via axis roads, freeways, and toll road systems. Many of these networks are insufficient or remain incomplete throughout Mexico City.
Eje vials. A large network of wide arterial roads with traffic signals along cardinal directions. Established in 1979, but the system remains incomplete.
Only two public freeways or expressways cross Mexico City proper. They are highly congested.
Autopistas. Mexico City has the most expensive toll roads in the world. Sweeping road privatization made these roads inaccessible to the working people. The government is working to re-nationalize 23 private highways throughout Mexico City.
Mexico City ranks as the most congested city in the world. The larger road network is severely inadequate to meet the current needs of the population. The 16 boroughs have been compared to islands separated by seas of traffic as travel between municipalities can take hours by car. Automobile traffic has led to serious environmental concerns over air quality and caused great economic loss to the country.
METRO (SUBWAY)
Second-largest network in North America. Transports 4.4 million people everyday. Heavily subsidized, some of the lowest fares in the world.
BUS RAPID TRANSIT (BRT)
MetroBus, Established 2005. Three-cabin bus travels in a special lane inaccessible to regular motor traffic.
PESERO MINIBUS
A private bus operation that serves as a “collective taxi.” It operates in an informal network of more than 1,000 routes, carrying up to 60% of the city’s daily passengers.
BIKE SHARE
North America’s second-largest bicycle sharing system called EcoBici. Mexico City also has the 5th largest bike path in the world known as the Muevete en Bici.
The subway and bus networks combined cover less than half the urban area of Mexico City. Certain municipalities remain underserved by either form of public transportation. Public transportation in Mexico City faces a social stigma, where the upper and middle class tend to resist public transportation. Status concerns and fear of crime plague the system, leading to designated cars for women and children. Given the density of Mexico City, public transportation is imperative in alleviating traffic congestion and automobile pollution. Certain municipalities remain underserved by any form of public transportation, limiting mobility and isolating communities.