In-depth guides, comparisons and how-tos for power stations, solar and backup power.
AC vs DC explained in one line: direct current (DC) flows one way, and alternating current (AC) keeps reversing direction. Your solar panels and batteries make DC. Your outlets deliver AC. Every off-grid or backup system exists to move power between the two, and knowing the difference makes inverters, chargers and wiring much easier to […]
According to the IRS Residential Clean Energy Credit page (checked Oct 21, 2026), the federal 30% credit for home solar “is not available for any property placed in service after December 31, 2025.” That makes the solar tax credit 2026 story a new one: homeowners who buy a system this year save through carryforwards, state […]
Amp-hours vs watt-hours comes up every time someone compares a 12V battery to a 48V battery or to a portable power station. The short version: watt-hours tell you how much energy a battery holds. Amp-hours only mean something once you know the voltage. Here’s how to convert between them and compare batteries fairly. Amp-Hours vs […]
A watts to amps calculator comes down to one line, amps = watts ÷ volts, the same relationship the U.S. Department of Energy uses for appliance energy estimates. This guide gives the formula, a ready-made chart for common voltages, and the two corrections people forget: inverter losses and power factor. Use it to size wire, […]
Your solar payback period is how many years it takes for bill savings to equal what you paid for the system. Installers’ estimates often lean optimistic. With a spreadsheet, NREL’s PVWatts and your own bills, you can check them in under an hour. In 2026 there’s one big change: don’t subtract a 30% federal credit […]
Victron PowerAssist is a MultiPlus-II feature that lets you run loads bigger than your shore power or generator can supply. You set a maximum input current. When your loads go over it, the MultiPlus-II tops up the difference with power from the battery. When the loads drop, the spare shore power recharges the battery. It’s […]
Net metering vs net billing is the most important utility rule to understand before you buy solar. Both programs credit the power your panels send to the grid. The difference is how much each exported kWh is worth, and that can change your payback by years. What Happens to Your Extra Solar At midday your […]
The Ohm’s law formula is V = I × R: voltage equals current times resistance, the relationship physicist Georg Ohm published in 1827. It’s the most useful equation in DIY electrical work. It explains why cables get hot, why voltage sags under load, and why a dead short on a battery is so dangerous. Here’s […]
How much do solar panels cost for a house? The best public data comes from Lawrence Berkeley National Laboratory (LBNL), which tracks hundreds of thousands of real installs. Its October 2025 update covers systems installed in 2024. Here are those numbers, what they mean for a typical home in 2026, and why quotes vary so […]
Want the full 50A from your Orion XS? If your Victron Orion XS is not charging full amps, the reason is usually simple to find and fix, and it’s one of the most frequently asked Orion questions. Victron’s Orion XS manual lists the exact reasons the output can be lower than expected. Here they are, […]
