Solar Cell Systems: Types, Pros, Cons, Installation Guide

Thansettakij•Economy•9d ago

Reader Briefing

Thailand is promoting solar energy installation for homes to combat rising electricity costs and energy price volatility.

•The Thai cabinet has agreed to prioritize national energy development to address fluctuating prices and promote efficiency.
•New progressive electricity tariffs will be implemented, with the first 200 units capped at 3 baht per unit.
•A Net Billing scheme will be introduced to purchase excess solar power from rooftop installations, with a national target of 500 MW.
•The government is exploring incentives for installing solar rooftops on residences to reduce household electricity expenses.

Overview

•On April 28, 2026, the Cabinet (ครม.) resolved to approve the national energy agenda in order to mitigate impacts from volatile energy prices and promote energy efficiency.
•On April 29, 2026, the National Energy Policy Council (กพช.) resolved to approve two key energy agenda items, acting upon the Cabinet's resolution from April 28, 2026.
•The National Energy Policy Council (กพช.) approved a progressive tariff structure for residential electricity consumption, pricing the first 200 units at no more than 3 baht per unit, due to the need to promote efficient energy use and reduce people's cost of living.
•The Energy Regulatory Commission (กกพ.) is tasked with collaborating with the Metropolitan Electricity Authority (กฟน.) and the Provincial Electricity Authority (กฟภ.) to finalize the design of the progressive tariff structure by June 2026.
•The Metropolitan Electricity Authority (กฟน.) and the Provincial Electricity Authority (กฟภ.) are to study investment methods for installing solar photovoltaic systems on residential rooftops, in collaboration with the Energy Regulatory Commission (กกพ.), in order to offer electricity sales services at fair and appropriate rates.
•The National Energy Policy Council (กพช.) approved the promotion of solar rooftop energy generation for residential users through a Net Billing system, with a national target of purchasing up to 500 megawatts of excess electricity.
•The purchase rate for excess solar electricity from rooftop installations will be 2.20 baht per unit for a duration of 10 years.
•The Energy Regulatory Commission (กกพ.) is required to issue regulations and announcements for electricity purchase according to the aforementioned guidelines by June 2026, and the Electricity Generating Authority of Thailand (กฟผ.), Provincial Electricity Authority (กฟภ.), and Metropolitan Electricity Authority (กฟน.) must update their Grid Code to support the solar for the people goal without impacting the national grid's stability.

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Key Quotes

Cabinet (ครม.)

"Determining a national energy agenda, focusing on mitigating impacts from volatile energy prices and promoting efficient energy use."

การกำหนดวาระแห่งชาติด้านพลังงาน โดยเน้นแนวทางการบรรเทาผลกระทบจากราคาพลังงานที่ผันผวน และการส่งเสริมการใช้พลังงานอย่างมีประสิทธิภาพ

National Energy Policy Council (กพช.)

"Approved the progressive electricity tariff rate for the first 200 units at no more than 3 baht per unit."

เห็นชอบอัตราค่าไฟฟ้าแบบก้าวหน้า (Progressive Rate) สำหรับการใช้ไฟฟ้า 200 หน่วยแรก ในอัตราไม่เกิน 3 บาทต่อหน่วย

National Energy Policy Council (กพช.)

"Purchasing excess electricity from residents installing solar panels on rooftops in a Net Billing format, with a national purchase target not exceeding 500 megawatts."

การรับซื้อไฟฟ้าส่วนเกินจากประชาชนที่ติดตั้งโซลาร์เซลล์บนหลังคาที่พักอาศัย รูปแบบ Net Billing เป้าหมายรับซื้อรวมทั้งประเทศไม่เกิน 500 เมกะวัตต์

Key Entities

Organization

Cabinet (ครม.)(คณะรัฐมนตรี (ครม.))ℹ️

The Thai cabinet that resolved to approve the national energy agenda.

National Energy Policy Council (กพช.)(คณะกรรมการพลังงานแห่งชาติ (กพช.))

The council that approved key energy agenda items including progressive tariffs and solar rooftop purchasing schemes.

Energy Regulatory Commission (กกพ.)(คณะกรรมการกำกับกิจการพลังงาน (กกพ.))

The commission tasked with designing progressive electricity tariffs and issuing regulations for purchasing excess solar power.

Metropolitan Electricity Authority (MEA)(การไฟฟ้านครหลวง (กฟน.))

An electricity authority involved in studying solar rooftop installations and updating grid codes.

Provincial Electricity Authority (PEA)(การไฟฟ้าส่วนภูมิภาค (กฟภ.))

An electricity authority involved in studying solar rooftop installations and updating grid codes.

Distribution Electricity Authorities(การไฟฟ้าฝ่ายจำหน่าย)

The collective term for electricity authorities involved in the distribution aspect of energy policy.

Electricity Generating Authority of Thailand (EGAT)(การไฟฟ้าฝ่ายผลิตแห่งประเทศไทย (กฟผ.))ℹ️

An authority responsible for updating grid codes to support the solar for the people initiative.

Than Settakij(ฐานเศรษฐกิจ)

A publication providing information about solar cell systems.