What do the loads use?
AC appliances require an inverter. DC loads require a suitable distribution path and may need voltage conversion.
Six scenario types
Choose the layout that matches the way power is distributed.
The right scenario is not based on whether the project is a house, boat or workshop. It is based on the loads, the available charging sources and whether the system supplies AC, DC or both.
Start with three questions
You do not need to know every technical detail before choosing.
Is solar part of the system?
Solar scenarios add daytime and no-sun load groups, PV inputs and controller requirements.
How is the battery recharged?
Grid, generator and shore-power charging can be represented where an AC charging source is available.
The scenario families
Six routes through the calculator.
Each route changes the inputs GridGap asks for and the results it can calculate. Pick the one that describes the proposed system, not the one that sounds most familiar.
Inverter-supplied loads
For installations where the loads are supplied as AC.
- AC Battery + InverterBattery-backed AC supply with grid or generator charging.
- AC Solar + Battery + InverterAC supply with battery storage and solar generation.
Battery and distribution
For boats, RVs, sheds, tiny homes and other systems with DC loads.
- DC Battery + DistributionBattery supply through DC distribution and conversion where required.
- DC Solar + Battery + DistributionDC supply with solar generation and battery storage.
One battery system, two load paths
For systems that run AC appliances and DC equipment from the same battery system.
- AC/DC Battery + Inverter + DistributionAC loads through an inverter with DC loads through distribution.
- AC/DC Solar + Battery + Inverter + DistributionMixed AC and DC supply with solar generation and battery storage.
Solar scenarios
Daytime and no-sun loads are entered separately.
Solar changes when energy is supplied, not just how much energy is needed. GridGap separates daytime solar usage from night-time or no-sun battery use so the calculation has a more realistic load split.
Typical uses
The building type helps with context. The electrical architecture still decides the scenario.
Homes and offices
Usually AC systems with battery backup, solar or both.
Workshops and stores
Often AC loads with higher surge or motor-related considerations.
Lodges and guesthouses
Useful where the same site may need several operating assumptions compared.
RVs, boats and sheds
Often DC or mixed AC/DC systems with charging from shore power, grid or solar.
Pick the architecture first. Refine the assumptions inside the scenario.
Once the scenario matches the proposed system, the calculation can focus on the loads, operating hours and equipment assumptions that actually matter.