Solar System & Battery Sizing for 775 kWh/Month in Stavanger, Norway
Complete photovoltaic engineering breakdown for a 775 kWh/month (25.8 kWh/day) electricity profile in Stavanger, Norway (2.9 Peak Sun Hours/day).
Technical Specification Table — 775 kWh/Month Solar System (Stavanger, Norway)
| Monthly / Daily Electricity Consumption | 775 kWh/month (25.8 kWh/day) |
| Location Peak Sun Hours (PSH) | 2.9 hours/day (Stavanger, Norway) |
| Required PV System Size (80% Performance Ratio) | 11.44 kWp DC |
| Number of Solar Panels (440W N-Type Bifacial) | 26 panels |
| Roof Area Required | 53.3 m² (574 sq ft) |
| Recommended Hybrid Inverter Rating | 10.2 kW AC |
| Recommended LiFePO4 Battery Storage (85% DoD) | 19.8 kWh Nominal (16.8 kWh Usable) |
| Estimated Annual Output | 9,687 kWh/year (~807 kWh/month) |
| Estimated System Turnkey Cost (Before Tax Credits) | kr 173,888 |
| Annual Electricity Bill Savings (@ kr 1.4/kWh) | kr 13,562/year (kr 1,130/month) |
Frequently Asked Questions
How many solar panels are needed for 775 kWh per month in Stavanger, Norway?
With an average of 2.9 Peak Sun Hours per day in Stavanger, Norway and an 80% system performance ratio, a monthly usage of 775 kWh (25.8 kWh/day) requires a 11.44 kWp solar array, which equals 26 standard 440W N-Type solar panels occupying 53.3 m² (574 sq ft) of roof space.
What size solar battery bank do I need for 775 kWh/month?
To cover evening and overnight loads (65% of daily consumption at 85% LiFePO4 depth of discharge), a 19.8 kWh nominal (16.8 kWh usable) LiFePO4 battery bank paired with a 10.2 kW hybrid inverter is recommended.
How much money will a 11.44 kW solar system save in Stavanger, Norway?
Generating approximately 9,687 kWh per year at an average local tariff of kr 1.4/kWh, the system saves kr 13,562 per year (kr 1,130/month) with an estimated payback period of 12.8 years.