GOING SOLAR IN NEW MEXICO
Residential net-zero solar project: SunPower 9.16 kW photovoltaic grid-tied system Clean energy delivers financial benefits for long-term homeowners and retirees in the Land of Enchantment |
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Project Timeline A contract was signed in April, 2016 with a Sun Power Certified installer for the design and installation of a solar PV system. Four months of delay followed to obtain needed HOA architectural review and approval, a process that resulted in two revised project proposals to account for array height, easement and sight-line restrictions. Written approval from the HOA was obtained in August, 2016, triggering subsequent engineering, permit and application activities. A significant amount of time was also consumed coordinating permits with the City, and gain interconnection application approval from the electric utility, PNM. Application screening and approval by PNM took place in October. Site preparation began in November and required three days. Actual rack construction, panel installation and trenching required five days to complete in December. The system passed all three inspections made by technicians from the city and PNM during the first two weeks of January, 2017. Three days of landscaping also concluded in early January, 2017, laying down rock, gravel and planting 15 new trees to screen the array site. A PNM electrician performed the final grid interconnection on January 13th. Final SunPower monitoring configuration and other project closeout activities were completed on January 17th, 2017. Although actual on-site work required less than two weeks, the entire project timeline was nine months; half of this was consumed by delays gaining HOA written approval. |
ROA & Retirement Finances Monthly PNM billing averages nearly 1,000 kWh of household consumption per month at a cost of $200, with peak usage during the Summer. There are 300 sunny days in New Mexico, so a 7.6 kWh solar array will totally offset energy use and avoid $2,400 of annual utility expense. Operating within the PNM net-metering program means we only pay for energy consumed above whatever the solar array generates for the grid. The system will over-produce most of the year and accumulate enough energy credit to cover the hottest Summer months. ![]() The total cost for the solar array and related landscaping will be $28,000 after a 30% federal tax credit. The estimated payback period for the entire project will be 11 years. There is also a payback period for our 2016 Chevrolet Spark EV commuter car, including a similar federal tax credit. Driving a solar powered vehicle avoids thousands of dollars each year in gasoline, oil changes and higher insurance cost. ![]() Long-term financial savings after the payback period are significant, lowering annual household expenditure during our retirement by $6,000, avoiding $2,400 utility and $3,600 gasoline expense each year, a $500 reduction in our monthly retirement operating budget. As costs associated with solar technology continue to fall, ever shorter payback periods and increased financial benefits result for long-term homeowners and retirees in New Mexico. ![]() |