{"id":2288,"date":"2026-08-07T18:16:00","date_gmt":"2026-08-07T15:16:00","guid":{"rendered":"https:\/\/mits.sa\/%d8%a7%d9%84%d9%86%d8%b8%d8%a7%d9%85-%d8%a7%d9%84%d9%87%d8%ac%d9%8a%d9%86-%d9%85%d8%b9-%d8%a7%d9%84%d8%a8%d8%b7%d8%a7%d8%b1%d9%8a%d8%a7%d8%aa\/"},"modified":"2026-10-17T08:29:50","modified_gmt":"2026-10-17T05:29:50","slug":"hybrid-solar-with-batteries","status":"publish","type":"post","link":"https:\/\/mits.sa\/en\/hybrid-solar-with-batteries\/","title":{"rendered":"Hybrid solar system with batteries: advantages and disadvantages"},"content":{"rendered":"<p>A hybrid solar system is a grid-tied system with batteries, reducing your electricity bill on regular days and ensuring continued power supply for critical loads during power outages. Its main advantage is uninterrupted service during outages, while its primary disadvantage is the cost of the batteries and the need for replacement throughout the system&#039;s lifespan. This article will frankly discuss the advantages and disadvantages, and when a hybrid system is worth the investment and when it is not.<\/p>\n<div class=\"mits-box\"><strong>In short:<\/strong><\/p>\n<ul>\n<li>Hybrid system = panels + hybrid inverter + batteries + grid connection.<\/li>\n<li>Its real value lies in securing electricity during outages, not in increasing savings.<\/li>\n<li>Batteries are charged based on basic loads only, not on the consumption of the entire house.<\/li>\n<li>If your network is stable and your goal is simply to save money, a tethered system is often more advantageous.<\/li>\n<\/ul>\n<\/div>\n<h2>How does the hybrid system work?<\/h2>\n<p>The heart of the system is the hybrid inverter, a single device that manages three power sources: solar panels, batteries, and the grid. During the day, it powers the loads using solar energy and charges the batteries with excess power. When the grid fails, it automatically switches to the batteries to power the critical loads, and the panels continue to generate power and charge as long as the sun is available.<\/p>\n<p>This is the practical difference from a standard tethered system, which stops at the first sign of trouble, even at midday. We explained and compared the three types in <a href=\"\/en\/on-grid-vs-off-grid-vs-hybrid\/\">The difference between On-Grid, Off-Grid and Hybrid solar power systems<\/a>.<\/p>\n<h3>Common operating modes<\/h3>\n<p>The terminology varies from inverter to inverter, but most offer modes similar to these:<\/p>\n<ul>\n<li><strong>Priority of self-consumption:<\/strong> Loads come from the sun first, then the battery, then the grid. Suitable for those who want to reduce their grid usage.<\/li>\n<li><strong>Priority of the reserve:<\/strong> The battery remains charged at all times and is only used during power outages. It is suitable for sensitive loads and extends battery life.<\/li>\n<li><strong>Network priority:<\/strong> The load comes from the grid, and the sun charges the battery and provides assistance when needed. It is used in special cases.<\/li>\n<\/ul>\n<h2>Features of the hybrid system<\/h2>\n<ol>\n<li><strong>Electricity during the outage:<\/strong> Refrigerators, lighting, router, cameras and room air conditioner remain operational.<\/li>\n<li><strong>Taking advantage of the sun during the outage:<\/strong> The panels continue to produce and charge the batteries, unlike the generator which needs fuel.<\/li>\n<li><strong>Protecting sensitive devices:<\/strong> Some hybrid inverters switch to battery quickly enough to function as an uninterruptible power supply for devices.<\/li>\n<li><strong>Flexibility for expansion:<\/strong> You can start with a small battery and increase the capacity later if the inverter supports it.<\/li>\n<li><strong>Smaller batteries than the separate system:<\/strong> Because the network remains the backup source on normal days.<\/li>\n<\/ol>\n<h2>Frankly, the flaws of the hybrid system<\/h2>\n<ol>\n<li><strong>Higher initial cost:<\/strong> Batteries and a hybrid inverter increase the price of the system compared to a system with the same power output.<\/li>\n<li><strong>The batteries need to be replaced:<\/strong> The panels have a performance guarantee of 25 to 30 years, while the batteries have a lifespan in cycles.<\/li>\n<li><strong>Loading and unloading losses:<\/strong> Every kilowatt-hour that passes through the battery loses a portion of it, so using the sun directly is always more efficient.<\/li>\n<li><strong>Limited capacity during outage:<\/strong> The inverter and the battery have a maximum limit, so not all the air conditioners in the house can be powered by the battery.<\/li>\n<li><strong>Space and ventilation requirements:<\/strong> Batteries need a shaded, well-ventilated place, because summer heat shortens their lifespan.<\/li>\n<\/ol>\n<h3>How long do batteries actually last?<\/h3>\n<p>Lithium phosphate batteries can withstand approximately 3000 to 6000 cycles at a depth of discharge of 80 to 90%. If the battery is charged and discharged once a day, its approximate lifespan is 3000 \u00f7 365 \u2248 8 years to 6000 \u00f7 365 \u2248 16 years. Gel and lead-acid batteries can withstand approximately 500 to 1500 cycles, or about 1.5 to 4 years with daily use. In standby mode, where the battery is only discharged during power outages, the number of cycles decreases and the lifespan increases, although the effects of heat and aging remain. A full comparison can be found in [link\/reference]. <a href=\"\/en\/solar-batteries-lithium-vs-gel\/\">Solar batteries: Lithium or gel?<\/a><\/p>\n<table class=\"mits-t\">\n<thead>\n<tr>\n<th>Item<\/th>\n<th>The linked system<\/th>\n<th>Hybrid system<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Bill reduction<\/td>\n<td>Yes<\/td>\n<td>Yes<\/td>\n<\/tr>\n<tr>\n<td>Working during breaks<\/td>\n<td>no<\/td>\n<td>Yes to important loads<\/td>\n<\/tr>\n<tr>\n<td>batteries<\/td>\n<td>nothing<\/td>\n<td>It exists and needs to be replaced during the system&#039;s lifespan.<\/td>\n<\/tr>\n<tr>\n<td>Initial cost<\/td>\n<td>less<\/td>\n<td>higher<\/td>\n<\/tr>\n<tr>\n<td>Complexity and maintenance<\/td>\n<td>basic<\/td>\n<td>Slightly higher<\/td>\n<\/tr>\n<tr>\n<td>Suitable for him<\/td>\n<td>A stable network and the goal of savings<\/td>\n<td>Frequent outages or loads that cannot tolerate interruption<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Does the battery increase savings? A straightforward calculation.<\/h2>\n<p>This is a frequently asked question. Let&#039;s assume a battery with a usable capacity of 10 kilowatt-hours, charged from excess electricity during the day and discharged at night. The maximum value of this energy on the 18 halala tariff is 10 x 0.18 = 1.8 riyals per day, or approximately 1.8 x 365 \u2248 657 riyals per year, according to the tariff announced at the time of writing. Please refer to the Saudi Electricity Company for the current tariff.<\/p>\n<p>However, in a net metering system, this surplus would be exported to the grid and deducted from your subsequent consumption according to established settlement procedures. This means the additional savings provided by the battery in this case are very small; in fact, the charging and discharging losses might even result in a negative balance. In short: buy a battery because you need electricity during power outages, not because you expect greater savings.<\/p>\n<h2>How do you calculate the battery capacity of a hybrid system?<\/h2>\n<p>A common mistake is calculating the battery consumption based on the entire house&#039;s power consumption. The correct approach is to identify a separate, critical load panel and calculate its consumption during the expected outage period. For example, consider a villa in Dammam with an expected outage of 4 hours; the figures are estimates for illustrative purposes.<\/p>\n<ul>\n<li>Refrigerator and freezer: Approximately 0.6 kWh over 4 hours (estimate).<\/li>\n<li>LED lighting (15 bulbs x 15 watts): 225 watts x 4 = 0.9 kilowatt-hours.<\/li>\n<li>Router and cameras: 50 watts x 4 = 0.2 kilowatt-hours.<\/li>\n<li>24000 BTU split air conditioner for living room: approximately 2.3 kW x 4 = 9.2 kWh.<\/li>\n<li>Total: 0.6 + 0.9 + 0.2 + 9.2 = 10.9 kWh.<\/li>\n<\/ul>\n<p>With a 90% lithium battery with a deep discharge and a 95% inverter efficiency of 10.9 \u00f7 0.9 \u00f7 0.95 \u2248 12.7 kWh nominal capacity. If the air conditioner were left off during a power outage, the demand would drop to approximately 1.7 \u00f7 0.9 \u00f7 0.95 \u2248 2 kWh only. This illustrates that the decision to use the air conditioner determines the battery size. The inverter must also be able to handle the instantaneous load and the compressor starting current of the air conditioner. For more information, see [reference\/link]. <a href=\"\/en\/solar-battery-sizing\/\">Calculating battery capacity for a solar system<\/a>.<\/p>\n<div class=\"mits-tip\"><strong>\ud83d\udca1 Tip:<\/strong> Have the technician disconnect the critical load circuit to a separate panel that outputs from the backup outlet of the hybrid inverter. This prevents the battery from being drained by an additional heater or air conditioner accidentally running during a power outage, and allows you to know in advance what will operate and what will shut down.<\/div>\n<h2>Who is the hybrid system suitable for?<\/h2>\n<ul>\n<li>Farms and the outskirts of cities where power outages are frequent.<\/li>\n<li>Homes with medical equipment or elderly people who need constant air conditioning.<\/li>\n<li>Shops that have display refrigerators or stock that will spoil if refrigeration is interrupted.<\/li>\n<li>Offices and clinics that contain servers, monitoring systems, and networks.<\/li>\n<\/ul>\n<p>If your electricity supply is stable and your goal is to reduce your bill, start with a hybrid inverter system that supports adding batteries later, thus postponing the cost of batteries until you actually need them. To calculate the size of your system, try <a href=\"\/en\/solar-energy-calculator\/\">Solar Energy Calculator<\/a>And look at <a href=\"\/en\/solar-products\/\">Solar energy products<\/a> \u0648<a href=\"\/en\/solar-energy\/\">MITS Solar Energy Services<\/a>. If air conditioning is your primary concern, these solutions might also be helpful. <a href=\"\/en\/hvac\/\">HVAC<\/a> High efficiency to reduce the load on the battery.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"mits-faq\">\n<h3>Can the entire house be powered by batteries during a power outage?<\/h3>\n<p>Theoretically possible, but very expensive, because air conditioners consume most of the energy. Practically speaking, you should select the critical loads and design the battery and inverter accordingly.<\/p>\n<h3>Does the hybrid system work without batteries?<\/h3>\n<p>Many hybrid inverters operate as grid-tie inverters without batteries; batteries are added later. Check this feature in the inverter&#039;s specifications before purchasing.<\/p>\n<h3>Do I need approval to connect the hybrid system to the network?<\/h3>\n<p>Yes, if it will be connected to the grid and export electricity to it, it is subject to the regulatory framework, implementation by a qualified contractor, and submission through the Saudi Electricity Company. Confirm the current procedures with the relevant authorities.<\/p>\n<h3>What is the best type of battery for a hybrid system?<\/h3>\n<p>Lithium phosphate (LiFePO4) is currently the most common choice for hybrid systems due to its high cycle count and deep discharge capacity. The gel is initially cheaper but has a shorter lifespan and requires a larger capacity for the same usable power.<\/p>\n<h3>What happens if the power outage lasts longer than the battery capacity?<\/h3>\n<p>During the day, the panels continue to power the loads and charge the battery, and at night the loads stop when the battery reaches a preset minimum level to protect it. Therefore, some people add a backup generator for extended periods.<\/p>\n<\/div>\n<div class=\"mits-cta\">\n<p><strong>Do you need a suitable system?<\/strong> The MITS team designs and installs hybrid systems and calculates battery capacity based on your truly critical loads, so you don&#039;t pay for capacity you don&#039;t need.<\/p>\n<p><a href=\"\/en\/contact\/\">Request a price quote<\/a> \u00b7 <a href=\"https:\/\/wa.me\/966575993880\">WhatsApp 0575993880<\/a> \u00b7 <a href=\"\/en\/solar-energy-calculator\/\">Try the calculator<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Solar hybrid system with batteries: its advantages and disadvantages frankly, does the battery increase savings, and how to calculate its capacity for your important loads during outages.<\/p>","protected":false},"author":1,"featured_media":2287,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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solar with batteries, pros and cons: does a battery increase savings, and how to size it for your essential loads during 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