Everything You Need
to Know About Solar
In-depth guides, expert analysis, and real case studies to help you make confident decisions about solar energy.
Solar in Thailand's Rainy Season: How Much Does Factory Output Drop?
Solar keeps producing in the rain — heavy-rain days drop roughly 50–80% vs a clear day, but factory ROI is built on the 1,300–1,500 kWh/kWp annual yield that already includes the monsoon. Monthly curve + TOU impact + myths + lightning/storm/flood protection.
Read MoreFactory Solar Sizing Thailand: How Many kWp? (2026)
How many kWp should a Thai factory install? Size it step by step from bill → daytime load → kWp → roof area → generation, using 6.5 m²/kWp and ~1,300 kWh/kWp/yr, with a worked example and the common sizing mistakes to avoid.
Read MoreZero Export Solar Thailand: No-Backfeed Rules (MEA/PEA 2026)
Why most Thai factory rooftop solar must not export to the PEA/MEA grid: the 15% transformer rule, Zero Export Controller vs Reverse Power Relay 32, the MEA/PEA approved-equipment lists, and why C&I is self-consumption by default.
Read MoreWhat Is the Ft Charge? Current Thailand Ft Rate 2026
What is the Ft (fuel adjustment charge) on a Thai electricity bill, who sets it, and how often does it change? Current Ft for May–Aug 2026 is 0.1623 THB/unit, set by the ERC every 4 months. With a worked factory-bill example + FAQ.
Read MoreThailand Ft History Table 2020–2026 — Every Period Charted
Every Ft (fuel adjustment charge) period from 2020 to today in one officially-sourced table (ERC/PEA/MEA). Current Ft (May–Aug 2026) = 0.1623 THB/unit, versus the 2023 crisis peak — why it rose and fell, and the impact on factory bills.
Read MoreThailand Electricity Bill & Saving Guide 2026 — Read It, Cut It
A plain-language electricity guide for Thai households: read your bill, how many baht per unit, what the Ft is, the TOU on/off-peak schedule, and real home-saving tips. Every topic linked in one place (ERC/MEA/PEA).
Read MoreThailand TOU On-Peak / Off-Peak Schedule 2026 (MEA & PEA) — Plain Guide
Thailand's 2026 TOU schedule made simple: On-Peak 09:00–22:00 Mon–Fri / Off-Peak 22:00–09:00 + weekends/holidays. MEA & PEA per-unit rates, a worked saving example, and who benefits from a TOU meter.
Read MoreThailand Electricity Price Per Unit 2026 — Home/Rental/Business/Farm
How many baht per unit is electricity in Thailand in 2026? Residential averages 3.95 THB/unit (incl. Ft 0.1623) on progressive tiers; rental rooms are legally capped at 4.88 THB/unit (OCPB 2025 law); business 4.18; farms 3.70–4.15. With a worked 300-unit/month home bill, sourced from the ERC/PEA/MEA.
Read MoreHome Electricity Rate Thailand 2026: Baht Per Unit Explained
How many baht per unit is home electricity in Thailand 2026? Households pay a tiered (progressive) rate, not a single price. See Type 1.1 (≤150 units) and 1.2 (>150 units) rates, the Ft (0.1623) and 7% VAT, and a worked 350-unit bill ≈ 4.3 THB/unit (not the 3.95 system-wide average).
Read MoreApply for an Electricity Meter in Thailand 2026: Cost & Steps
How much does a new home electricity meter cost? The MEA inspection fee is 700 THB (single-phase), and new residential applicants pay NO security deposit. Plus how to pick the meter size (a typical home is 15(45)A), the documents you need, the steps, and how many days it takes. As of June 2026 — confirm via 1130/1129.
Read MoreRental Room & Dorm Electricity Cost Thailand 2026 — Per-Unit Rate + Tenant Rights
How many baht per unit is rental-room/dorm electricity in Thailand 2026? A new 2025 OCPB (สคบ.) law caps it at no more than 4.88 THB/unit — no profiting on power. Plus how to check if you're overcharged and what to do about it (OCPB hotline 1166). Sourced from OCPB/กกร./MEA/PEA.
Read MoreHow to Calculate Your Electricity Bill 2026: Formula + Example (Home MEA/PEA)
How to calculate your Thai home electricity bill 2026 step by step: progressive energy tiers (3.2484/4.2218/4.4217) + Ft 0.1623 + service charge 38.22 + 7% VAT, with a fully worked 300-unit home bill and a free bill analyzer. Sourced from MEA/PEA/ERC.
Read MoreHome EV Charging on a TOU Meter (2026): Is It Worth It & What's the Cost?
Is charging your EV at home overnight on a TOU meter worth it? Real numbers: Off-Peak 2.6369 vs On-Peak 5.7982 vs a normal meter, the cost of one full charge (~66 units ≈ 174 THB) and per month (~260 units), a 3-way comparison table, and ~7-month payback on the meter change. Sourced from MEA/PEA.
Read MoreHow to Apply for a TOU Meter in Thailand (PEA/MEA) 2026: Steps, Cost, Worth It?
How to switch to a TOU meter with the PEA (1129) and MEA (1130) in 2026: eligibility, the step-by-step application, the meter-change cost, and a clear 'should you switch?' decision guide (best for homes on off-peak use / overnight EV charging). Official channels included.
Read MoreIs a TOU Meter Worth It in Thailand 2026? Break-Even Before You Switch
Is switching to a TOU meter worth it? We run the break-even: you need roughly 60%+ of your power in off-peak. With a home that WINS (~192 THB/mo saved, ~18-month payback) and one that LOSES (~440 THB/mo more), plus a who-should / who-shouldn't table. Sourced from MEA.
Read MorePEA vs MEA Electricity Rate 2026: Is the Bill Different? (Provincial vs Metro)
The home electricity rates of the PEA (provincial) and MEA (metro) are identical nationwide — the ERC sets one national price, so every tier, service charge, TOU rate and Ft matches. The only difference is the service area: MEA covers 3 provinces (Bangkok, Nonthaburi, Samut Prakan); PEA covers the other 74. Includes how to tell which authority you're under. Sourced from MEA/ERC.
Read MoreThailand Agricultural Electricity Rate 2026: Baht Per Unit + How to Apply
The agricultural (water-pumping) rate is a dedicated user class — roughly 3.70–4.15 THB/unit (incl. Ft). Who qualifies (farmer groups/cooperatives/irrigation agencies), how it differs from the home/business rate, and how to apply for a farm connection with the PEA (1129). Sourced from ERC/PEA.
Read MoreOff-Peak Calendar Thailand 2026: Which Days Power Is Cheap (MEA & PEA)
TOU off-peak days for 2026: weekday off-peak is 22:00–09:00, while every Saturday, Sunday and official public holiday is off-peak all day. Includes the full table of all 17 Thai public holidays in 2026 that are off-peak days, plus how to plan usage. Sourced from the Bank of Thailand Notif 31/2568, MEA and PEA.
Read MoreReady to Start Your Solar Journey?
Consult our experts for free and receive a customized proposal for your business.
Get a Free Quote