Solar Cell + EV Charger Installation
Solar PV + EV Charger — Home · Office · Shop · Factory
Sahawatthanakit (1988) designs, supplies, and installs complete Solar PV + EV Charger systems — On-grid / Off-grid / Hybrid · 3-100 kW for homes, commercial buildings, shops, and small-to-mid factories · in-house licensed electrical engineer signs the design and files MEA/PEA permits · compliant with IEC 61730, IEC 61215, IEC 62196. Serving Bangkok and surrounding provinces, with project work nationwide — send your power bill or roof size in chat for a free assessment and quote.
Standards & Certifications
Solar PV systems designed per IEC 61215 (PV module qualification), IEC 61730 (PV safety), and TIS 2580-2555 — the standards required by MEA / PEA / ERC for installation permits. Inverters certified to IEC 62109-1/2 plus grid-tie specs of Metropolitan / Provincial Electricity Authority. Mounting structures sized for wind load per Thailand's มยผ.1311-50 + IEC 61215 mechanical load test (2,400 Pa). DC stringing + AC interconnect per IEC 60364-7-712. The Energy Regulatory Commission's Net Energy Metering (NEM) program credits 1:1 up to 100 kW. We install on-grid / off-grid / hybrid systems from 10 kW to 1 MW, with 5-10 year inverter and 25-30 year panel warranties.
Products sourced from OEM-approved manufacturers — quality and certification you can trust
Tier-1 PV Modules
IEC 61215 · IEC 61730 standard
Tier-1 PV modules (BloombergNEF tier list) · 25-year warranty · 21-22% efficiency · monocrystalline / bifacial · fits residential, commercial, small-to-mid factories.
Licensed EPC Service
MEA / PEA permit · 3-100 kW · วิศวกรไฟฟ้าใบรับรองพลังงาน
Licensed EPC team with electrical engineer + energy permit — signs design + files MEA (Bangkok metro) / PEA (provincial) per Thai law · 3-100 kW (residential + small factory) · design through permits, install, and lifetime PM · corporate tax deduction up to ฿200,000.
EV Charger Installation
AC Wallbox 7-22 kW · DC Fast 50-150 kW · Solar+Battery integration
EV Charger installation — AC Wallbox 7-22 kW (IEC 62196 Type 2) for home/office/retail + DC Fast 50-150 kW (CCS Combo 2 / CHAdeMO) for public stations + factories · integrated with Solar Rooftop + Battery for direct solar-to-EV charging that reduces peak demand.
Compare specs + price + recommendations
Free comparison tables — full specs, real prices, standards references, and use-case picks
We've done this before — here's the proof
Engagements with documented outcomes, standards-compliance, and client trust — not stock photos.
Industrial racking systems — full range
What customers say
Before you send an RFQ
Q1.Solar EPC payback period?+
Q2.Who do we need permits from?+
Q3.What roof types are compatible?+
Q4.What warranties are included?+
Q5.Maintenance requirements?+
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Related case studies & insights
120 kWp Rooftop Solar EPC — Metal Parts Factory, Nonthaburi — 58% Electricity Cost Reduction
Case study: full EPC design and installation of a 120 kWp On-Grid rooftop solar system for a metal parts manufacturing facility in Nonthaburi — MEA Net Metering connected, 5.4-year payback.
✓ 120 kWp installed capacity — generating ~14,400 kWh/month
Solar Rooftop Factory Permits in Thailand 2026 — RG.4, ERC, Building Permit & Grid Interconnection
The latest guide to permitting a factory rooftop solar system in Thailand. After the 2024 ministerial regulation removed the RG.4 factory license, three steps remain: ERC license exemption (1,000 kVA threshold), building modification permit (160 sq.m threshold), and PEA/MEA grid interconnection under zero-export — with real documents and timeline.
Factory Rooftop Solar: CAPEX vs PPA vs Leasing — Which Investment Model Wins
A decision-ready comparison of the three rooftop-solar investment models for Thai factories: CAPEX (own it outright, one-time payment, 4–6 year payback, claim BOI + depreciation), PPA (developer funds it free, you buy the power at 20–40% below grid for 10–25 years, zero capex), and Leasing (fixed monthly payment, you keep all the power). Includes a side-by-side comparison table, a 10-year cash-flow example for a 100 kWp system, 5 deciding factors (budget/tax/roof ownership/risk/time horizon), and the 6 PPA contract clauses to read before signing (escalation, buyout, REC/carbon credits, performance, building-sale transfer) per ERC/BOI/MEA and TFRS 16.
Is Your Factory Solar Producing What You Paid For? — Performance Ratio (IEC 61724) & the O&M That Keeps It
An installed solar system can quietly underproduce by 10-20% from soiling, inverter faults, or PID. How to measure system health with Performance Ratio per IEC 61724-1, Thailand's specific-yield benchmark, why output drops, and the O&M that protects it — cleaning, IR thermography, IV-curve testing, monitoring.