Battery Backup Storage Guide
GPT Energy – Battery Backup Runtime Guide
❄ Winter – Gas Furnace Only (No AC)
Battery Size | Essentials Only (~1.6 kW) | Most of Home, No AC (~2.8–3.0 kW) |
10 kWh | 6–6.5 hrs | 3–3.5 hrs |
20 kWh | 12–13 hrs | 6–7 hrs |
30 kWh | 18–19 hrs | 9–10 hrs |
40 kWh | 24–25 hrs | 12–13 hrs |
50 kWh | 30–31 hrs | 15–16 hrs |
60 kWh | 36–38 hrs | 18–20 hrs |
Spring / Fall – Mild AC Cycling
Battery Size | Essentials Only | Most Home No AC | 1 AC (Light) | 2 AC (Light) |
10 kWh | 7 hrs | 3.5 hrs | 2.5 hrs | 1.5–1.8 hrs |
20 kWh | 14 hrs | 7 hrs | 5 hrs | 3 hrs |
30 kWh | 21 hrs | 10 hrs | 7.5 hrs | 5 hrs |
40 kWh | 28 hrs | 13–14 hrs | 10 hrs | 6.5–7 hrs |
50 kWh | 35 hrs | 17 hrs | 12.5 hrs | 8 hrs |
60 kWh | 42 hrs | 20 hrs | 15 hrs | 10 hrs |
Summer-Heavy AC Use
Battery Size | Essentials Only | Most Home No AC | 1 AC (Heavy) | 2 AC (Heavy) |
10 kWh | 6 hrs | 3 hrs | 1.5–2 hrs | 1 hr |
20 kWh | 12 hrs | 6 hrs | 3–3.5 hrs | 2 hrs |
30 kWh | 18 hrs | 9–10 hrs | 5 hrs | 3.3 hrs |
40 kWh | 24 hrs | 12–13 hrs | 6.5–7 hrs | 4.5 hrs |
50 kWh | 30 hrs | 15–16 hrs | 8 hrs | 5.5 hrs |
60 kWh | 36 hrs | 18–19 hrs | 9.5 hrs | 6.5 hrs |