Peak Sun Hours in New South Memphis, Tennessee, United States
- Solar zone
- Zone 3 (good)
- Best month
- June (6.7)
- Worst month
- December (2.1)
- Climate
- Temperate · 16.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.44 | 3.51 | 3.69 | 0.97 | 3.8 | 83 |
| Feb | 3.01 | 4.55 | 3.65 | 1.25 | 5.8 | 83 |
| Mar | 4.12 | 5.88 | 4.17 | 1.66 | 11.0 | 81 |
| Apr | 5.30 | 7.10 | 4.87 | 2.01 | 16.3 | 78 |
| May | 5.94 | 7.72 | 4.73 | 2.45 | 21.1 | 78 |
| Jun | 6.68 | 7.96 | 5.50 | 2.53 | 25.8 | 73 |
| Jul | 6.39 | 7.64 | 5.09 | 2.49 | 27.8 | 69 |
| Aug | 5.85 | 6.96 | 4.90 | 2.28 | 27.8 | 65 |
| Sep | 4.95 | 6.04 | 5.05 | 1.76 | 24.1 | 65 |
| Oct | 3.77 | 4.86 | 4.89 | 1.23 | 17.2 | 69 |
| Nov | 2.76 | 3.70 | 4.23 | 0.96 | 10.4 | 75 |
| Dec | 2.13 | 3.13 | 3.37 | 0.87 | 5.7 | 83 |
GHI, Clear-sky, DNI, DHI in kWh/m²/day. Data: NASA POWER climatology (long-term monthly averages).
Off-grid calculator
Add appliances
- Add an appliance to size a system.
Sizing
- Daily load
- 0.00 kWh
- Panel wattage
- 0 W
- Panel count (400W modules)
- 0
- Battery bank
- 0.0 kWh
Sizing against worst-month PSH of 2.13 kWh/m²/day, 0.77 system efficiency.
About solar in New South Memphis
New South Memphis, United States has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.45 kWh/m²/day, a good solar resource by global standards.
The strongest month in New South Memphis is June (summer) at 6.68 kWh/m²/day, and the weakest is December (winter) at 2.13 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the December value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
New South Memphis's solar conditions are well within the range where off-grid PV is a straightforward engineering exercise with standard-sized arrays and lithium batteries.
FAQ
- What are the peak sun hours in New South Memphis?
- New South Memphis averages 4.45 peak sun hours per day annually, ranging from 2.13 in December to 6.68 in June.
- How many solar panels do I need in New South Memphis?
- Panel count depends on your daily load. At New South Memphis's annual average of 4.45 kWh/m²/day, a 5 kWh/day load needs roughly 4 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in New South Memphis?
- Sizing against New South Memphis's worst month (December, 2.13 kWh/m²/day) with 2 days of autonomy at 80% depth of discharge, a 5 kWh/day load needs about a 12.5 kWh battery bank.
- How does New South Memphis's solar resource compare globally?
- New South Memphis sits in solar zone 3 out of 5 (where 5 is strongest) at 4.45 kWh/m²/day — good by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- How much does winter reduce solar output in New South Memphis?
- New South Memphis's worst month (December) delivers 2.13 kWh/m²/day — about 32% of the summer peak of 6.68. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect New South Memphis's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. New South Memphis's 4.45 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in New South Memphis?
- At New South Memphis's latitude (35°), a fixed tilt near 35° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.