{"id":13152,"date":"2026-02-05T15:30:28","date_gmt":"2026-02-05T08:30:28","guid":{"rendered":"https:\/\/solarppm.com\/?p=13152"},"modified":"2026-02-09T10:59:50","modified_gmt":"2026-02-09T03:59:50","slug":"how-to-calculate-payback","status":"publish","type":"post","link":"https:\/\/solarppm.com\/en\/how-to-calculate-payback\/","title":{"rendered":"Is Investing in Solar PV Systems Worthwhile?"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u0e08\u0e38\u0e14\u0e04\u0e38\u0e49\u0e21\u0e17\u0e38\u0e19\u0e42\u0e0b\u0e25\u0e32\u0e23\u0e4c\u0e40\u0e0b\u0e25\u0e25\u0e4c\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Many business owners wonder whether installing a solar PV system provides a worthwhile return on investment (ROI). To provide clarity, Solar PPM presents a preliminary guide on how to calculate the break-even point for your solar investment.\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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How to Calculate the Break-Even Point for Solar Installations\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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1. Determine System Size Based on Total Consumption<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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each industrial facility, depending on electricity usage patterns and operating hours. Solar PPM offers expert consultations at no cost to help determine your optimal system size.<\/span><\/p>

  • Example:<\/span><\/i> A 300 kWp installation (equivalent to 300,000W).<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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    2. Calculate Total Investment Cost<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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    Installation costs fluctuate based on system size, mounting type, and roof structure.<\/span><\/p>

    • Example:<\/span><\/i> Assuming an installation cost of <\/span>25 THB per Watt<\/b>.<\/span><\/li><\/ul>

      Total Investment:<\/span><\/i> 300,000W x 25 THB\/W = <\/span>7,500,000 THB<\/b>.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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      3. Estimate Annual Energy Production<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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      Since solar intensity varies throughout the day, we use “Peak Sun Hours” (PSH) for calculation. On average, Thailand provides approximately <\/span>4 hours of effective sunlight per day<\/b>.<\/span><\/p>

      Calculation:<\/span><\/i> 300 kWp x 4 hours = <\/span>1,200 kWh per day<\/b>.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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      4. Calculate Annual Electricity Savings <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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      Based on the electricity tariff as of August 2023:<\/span><\/p>

      • Standard Rate: <\/span>5.09 THB per unit (kWh)<\/b>.<\/span><\/li>
      • Daily Savings: 1,200 kWh x 5.09 THB = <\/span>6,108 THB per day<\/b>.<\/span><\/li>
      • Annual Savings (365 days): 6,108 x 365 = <\/span>2,229,420 THB per year<\/b>.<\/span><\/li><\/ul>

        Accounting for Operation & Maintenance (O&M):<\/b> Assuming an annual O&M cost of approximately 200,000 THB (actual costs depend on system scale):<\/span><\/p>

        • Net Annual Savings:<\/span><\/i> 2,229,420 – 200,000 = <\/span>2,029,420 THB per year<\/b>.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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          5. Calculate the Break-Even Point (Payback Period)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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          With a 7,500,000 THB investment and annual savings of 2,029,420 THB:<\/span><\/p>

          • Payback Period:<\/span><\/i> 7,500,000 \/ 2,029,420 = <\/span>3.69 Years<\/b>. Since a high-quality solar system has an operational lifespan of <\/span>25 years<\/b>, you will enjoy pure profit for the remaining <\/span>21.31 years<\/b>.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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            6. Leverage BOI (Board of Investment) Incentives<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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            If your facility qualifies for BOI investment promotion, you may receive a <\/span>50% corporate income tax exemption<\/b> on the project value, applicable within a 3-year period.<\/span><\/p>

            • Tax Deduction:<\/span><\/i> 7,500,000 THB x 50% = <\/span>3,750,000 THB<\/b>.<\/span><\/li>
            • Adjusted Investment Cost:<\/span><\/i> 7,500,000 – 3,750,000 = <\/span>3,750,000 THB<\/b>.<\/span><\/li>
            • Optimized Payback Period:<\/span><\/i> 3,750,000 \/ 2,029,420 = <\/span>Only 1.84 Years<\/b>.<\/span><\/li><\/ul>

              Under this scheme, the profitable period extends to <\/span>23.16 years<\/b>. When calculated against your annual savings, the total lifetime benefit reaches approximately <\/span>47,001,367.2 THB<\/b>.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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              Conclusion\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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              A single investment in a solar PV system can significantly reduce operational overhead and substantially increase long-term profitability for your facility.<\/span><\/p>

              Note: This is a preliminary calculation. For a comprehensive financial analysis tailored to your specific facility, please contact our specialists.<\/span><\/i><\/p>

              Consult with Solar PPM today:<\/b> Line Official:<\/b> @solarppm<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

              Many business owners wonder whether installing a solar PV system provides a worthwhile return on investment (ROI). To provide clarity, Solar PPM presents a preliminary guide on how to calculate the break-even point for your solar investment. How to Calculate the Break-Even Point for Solar Installations 1. Determine System Size Based on Total Consumption each […]<\/p>\n","protected":false},"author":34,"featured_media":7625,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"","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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5],"tags":[],"class_list":["post-13152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"\nIs Investing in Solar PV Systems Worthwhile? - SolarPPM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/solarppm.com\/en\/how-to-calculate-payback\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Is Investing in Solar PV Systems Worthwhile? - SolarPPM\" \/>\n<meta property=\"og:description\" content=\"Many business owners wonder whether installing a solar PV system provides a worthwhile return on investment (ROI). 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To provide clarity, Solar PPM presents a preliminary guide on how to calculate the break-even point for your solar investment. How to Calculate the Break-Even Point for Solar Installations 1. 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