Based on historical Portales, NM data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in Portales.
Portales has an average monthly Global Horizontal Irradiance (GHI) of 5.45 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 19% less than the average monthly Direct Normal Irradiance (DNI) of 6.75 kWh/m2/day. 
Solar installations in Portales that are always titled at the latitude of Portales (Average Tilt at Latitude or ATaL) average 6.32 kWh/m2/day, or about 16% greater than the average monthly GHI of 5.45 kWh/m2/day and approximately 6% less than the average monthly DNI of 6.75 kWh/m2/day. 
Global Horizontal Irradiance: The total amount of solar radiation that is received per unit area by a surface that is always positioned in a horizontal manner.
Direct Normal Irradiance (DNI)
Direct Normal Irradiance: The total amount of solar radiation received per unit area by a surface that is always perpendicular to the sun rays that come in a straight line from the direction of the sun at its current position in the sky.
Average Tilt at Latitude (ATaL)
Average Tilt at Latitude: The total amount of solar radiation received per unit area by a surface that is tilted toward the equator at an angle equal to the current latitude. ATaL will often produce the optimum energy output.
Solar Radiation Levels in Portales
Solar Radiation Data in Portales, NM
See the chart below for monthly solar radiation levels in Portales.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Portales, NM
Portales, NM has a average annual solar radiation value of 6.07 kilowatt hours per square meter per day (kWh/m2/day). 
The month with the highest historical solar radition values in Portales is June with an average of 6.99 kWh/m2/day, followed by April at 6.69 kWh/m2/day and July at 6.64 kWh/m2/day. 
The three months that historically average the lowest average solar radiation levels in Portales (New Mexico) are December with an average of 5.01 kWh/m2/day, followed by January with an average of 5.1 kWh/m2/day and November at 5.26 kWh/m2/day. 
Solar Power Comparison: Portales vs. the U.S.
Solar Power Levels in Portales
The average monthly solar radiation level in Portales, NM, of 6.07 kilowatt hours per square meter per day (kWh/m2/day) is approximately 63% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 8% less than the average level of 6.6 kWh/m2/day in a city with historically high levels (NV). 
→ Values listed as 0 (zero) are not available (N/A).
Solar Power: vs. the U.S.
Below is a month-by-month comparison of how average Portales solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). 
→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).
We do not currently have data on solar panel installations in the city of Portales, NM at this current time.
However, Portales is in Roosevelt County and Roosevelt County has at least 3 solar insallations right now. 
Solar Power Output in Portales
The Power of Solar in Portales, NM
Monthly AC solar system output averages for Portales (nm). Month-by-month solar power, as ranked by AC output, in Portales. 
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Portales, NM
Portales (NM) has a average annual solar AC output value of 6916.41 kilowatt hours (AC). 
The month with the highest historical solar power output in Portales is April with an average of 629.23 kWhac, followed by June at 627.78 kWhac and May at 625.88 kWhac. 
The three months that historically average the lowest average solar output levels in Portales (New Mexico) are February with an average of 505.1 kWhac, followed by November with an average of 508.33 kWhac and December at 510.28 kWhac. 
Cost of Utilities in Portales
Portales Electricity Costs
Electricity prices (residential) in Portales averaged 13.10 cents per kilowatthour (¢/kWh) in September 2018, which was about 1% more than the overall U.S. average residential electricity rate of 13.01¢/kWh in September. 
Solar Power Poll: Portales
Vote now: Given all of the data and analysis provided for Portales, is solar power a good choice for residents of this city?
Portales Natural Gas Costs
Natural gas prices (residential) in New Mexico averaged $13.45 per thousand cubic feet (Mcf) in September 2018, which was approximately 22% less than the overall U.S. average residential natural gas rate of $17.32 per Mcf in September. 
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"Solar cells convert sunlight into electricity through a physical process known as the photovoltaic effect.",
"Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.",
"Various missions to space by different countries are known to utilize solar energy as a main power source.",
"The largest solar power plant in the world covers 1000 acres & is located in the Mojave Desert in California.",
"Some tax incentives and rebate programs are designed to spur the use of solar energy. These vary by location.",
"Solar power is renewable, does not produce any pollutants and is one of the cleanest source of energy.",
"It takes light about 8 minutes, 19 seconds to travel the 93,000,000 miles from the sun's surface to us on Earth.",
"About half of the sun's energy is absorbed by the Earth's surface; about 30 percent is reflected back from the surface.",
"The solar energy that strikes the Earth in one hour could provide all of the Earth's energy needs for a complete year."
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