{ "id": 90019, "date": "2026-06-28T00:00:00", "date_gmt": "2026-06-28T00:00:00", "guid": { "rendered": "https:\/\/genixenergy.com.ua\/?p=90019" }, "modified": "2026-07-05T22:05:39", "modified_gmt": "2026-07-05T14:05:39", "slug": "critical-loads", "status": "publish", "type": "glossary", "link": "https:\/\/genixenergy.com.ua\/en\/glossary\/critical-loads\/", "title": { "rendered": "Critical Loads" }, "content": { "rendered": "

Critical loads are the electrical circuits in a home or building that must keep running during a power outage: typically refrigeration, lighting, internet equipment, phone charging, and any heating controls or medical devices. Knowing which loads are critical is the first step in sizing a backup power system correctly.<\/p>\n\n

Why it matters for home backup power<\/h2>\n\n

When the grid fails, a battery cannot power every appliance in a home without a very large and expensive installation. Identifying critical loads first lets a homeowner match battery capacity to actual needs rather than whole-house demand, which stretches backup time and keeps system cost proportionate.<\/p>\n\n

A LiFePO4 battery delivers roughly 85 percent of its nameplate capacity as usable energy: depth of discharge runs 80 to 95 percent, and one-way discharge and inverter efficiency add a further 90 to 95 percent factor(Source: Battery University BU-808<\/a>). Knowing your critical load in watts and your longest expected outage in hours converts that usable percentage into a specific kWh<\/a> target.<\/p>\n\n

Critical Loads in practice<\/h2>\n\n

Key numbers<\/h3>\n\n

A typical apartment running only critical loads (refrigerator, a few lights, a router, phone charging, and a gas-boiler circulation pump) draws around 300 to 700 W. Over an eight-hour outage that is roughly 2.4 to 5.6 kWh of energy. With a 20 to 30 percent margin for variation and efficiency losses, a 5 kWh system covers a one-bedroom apartment; a 10 kWh unit covers a larger apartment or a small house. Genixgreen LiFePO4 systems run at a nominal 51.2 V and scale in parallel from about 5 kWh to 16 kWh for homes and into the MWh range for commercial sites. The actual backup time<\/a> always depends on which loads are connected and how many watts they draw at the time of the outage.<\/p>\n\n

Critical loads vs. non-critical loads<\/h3>\n\n

Non-critical loads, such as air conditioning, electric kettles, and washing machines, draw high power and can drain a home battery in a fraction of the time a critical-load-only plan allows. Separating them onto a different circuit, or using the load-management feature of a hybrid inverter, can multiply effective backup time by two or three times without changing the battery at all. In a fully off-grid<\/a> setup this separation is essential: every watt-hour spent on a non-critical load is a watt-hour unavailable for the circuits that matter most.<\/p>\n\n

How Genixgreen uses Critical Loads<\/h2>\n\n

Genixgreen has built LiFePO4 storage in its own factory since 2011 and ships to 100+ countries, with local stock in Odesa for delivery across Ukraine. Genixgreen home battery systems are designed to work alongside a hybrid inverter that can dedicate a separate critical-load circuit, so the circuits that matter most receive power first and are the last to be shed during an outage or in island mode.<\/p>\n\n

Related terms<\/h2>\n\n