Now shipping across Indonesia Thailand Brazil 10-Year System Warranty IEC 61215 / 61730 Certified Free remote sizing consultation Now recruiting regional distributors → apply Now shipping across Indonesia Thailand Brazil 10-Year System Warranty IEC 61215 / 61730 Certified Free remote sizing consultation Now recruiting regional distributors → apply
Estd. 2019 2026 / Series III
ID · TH · BR Lat −10° ↔ +20°

Power from the core.

PROTONSOL designs complete off-grid energy systems for homes in equatorial climates — from the silent rural villages of Sumatra to the long coastline of Isan, from the Amazon basin to the islands of the Banda Sea. One box. One app. One decade of warranty. No utility required.

2,400+
Homes Powered
3
Launch Markets
10yr
Full Warranty
<48h
Install Window
Certified & Compliant
IEC 61215 IEC 61730 UN 38.3 ISO 9001 SIRIM · TISI · INMETRO
01 / The Problem

Across the tropics, one billion people still live with unreliable electricity.

“We designed PROTONSOL for places where the grid ends, the road ends, and the day still has six more hours of sun.” — Engineering Brief, 2024
Indonesia · ID
17,508islands
An archipelago of energy demand

Over 20 million Indonesians remain under-electrified. Our modular systems ship to ports from Jakarta to Jayapura — and install in a single afternoon.

View Regional Plan →
Thailand · TH
1,430kWh/m²/yr
Some of Asia's best solar irradiance

Ideal for residential off-grid from the northern hills of Chiang Rai to the coastal villages of Krabi. Full Thai-language owner support.

View Regional Plan →
Brazil · BR
1M+rural homes
Off-grid market still growing fast

From Amazonas to the Sertão, PROTONSOL is built for Brazil's heat, voltage volatility, and rainy-season humidity — with INMETRO-ready configurations.

View Regional Plan →
02 / The Systems

Three complete systems. One philosophy.

PS-C5 / 2026 Starter

CORE 5

Storage
5.1kWh
PV Input
1.5kW
Output
3kW
Cycle Life
6,000×
from $1,890
Spec Sheet →
PS-C10 / 2026 Most Popular

CORE 10

Storage
10.2kWh
PV Input
3.0kW
Output
5kW
Cycle Life
6,000×
from $3,290
Spec Sheet →
PS-C20 / 2026 Premium

CORE 20

Storage
20.4kWh
PV Input
6.0kW
Output
8kW
Cycle Life
6,000×
from $5,940
Spec Sheet →

Need more? Stack up to 60 kWh.

Every CORE system is modular. Add units as your household grows, your workshop expands, or your village demands more light.

Custom Sizing
03 / The Anatomy

A single integrated core. Five honest parts.

MPPT 01 / SUN 02 / PV ARRAY 03 / MPPT CORE 04 / LIFEPO4 BANK 05 / HOME
01 / SUN

Tropical Irradiance

The tropics receive 1,400+ kWh/m² per year — nature's most reliable fuel source.

02 / PV ARRAY

High-Efficiency Panels

Monocrystalline 450W+ modules, TÜV-tested for salt, humidity, and 40°C+ operation.

03 / MPPT CORE

Intelligent Controller

Dual-MPPT tracking extracts every usable watt from shifting cloud, dust, and sun angle.

04 / LIFEPO4 BANK

Safe Lithium Storage

Lithium iron phosphate — no thermal runaway, 6,000+ cycles, 80% depth of discharge.

05 / HOME

Clean AC Output

Pure sine wave 220V AC for lights, fridges, pumps, TVs, fans — day and night.

04 / Engineering

Built for the equator. Tested to fail, so it doesn't.

Tropical-grade enclosure IP65

Sealed against monsoon rain, salt spray, insects and dust. Operates unshaded up to 55°C ambient without derating.

LiFePO₄ chemistry, not NMC

Thermally stable at 60°C+. No fire propagation. Safe for homes with children, pets, and thatch roofs.

Stackable & future-proof

Start with 5 kWh. Add modules as your family, workshop, or farm grows. Up to 60 kWh per cabinet.

Real-time monitoring via app

Every watt, every cycle, every fault — visible in Bahasa, Thai, Portuguese, English, and Chinese.

Installs in under 48 hours

Pre-wired core cabinet. Plug-and-play connectors. One certified technician, one day, one working home.

10-year full system warranty

Not just the battery. The panels, inverter, controller, cabinet — all backed by regional service centers in ID, TH, BR.

05 / Applications

From island homes to forest clinics.

APPLICATION 01

Island & Coastal Homes

For the thousands of households along Indonesian, Thai, and Brazilian coastlines where diesel generators are the only alternative. PROTONSOL runs silently through the night — no fuel, no fumes, no rising cost.

APPLICATION 02

Smallholder Farms

Pumps, cold-storage, drying, lighting — the backbone of tropical agriculture, now untethered from the diesel queue.

APPLICATION 03

Off-Grid Villages

Light for studying. Fans for sleeping. A refrigerator for medicine. Our systems turn "someday" into tonight.

APPLICATION 04

Rural Clinics & Schools

Vaccine refrigerators, delivery lights, classroom projectors. Powered continuously through the wet season.

MERCADO
APPLICATION 05

Village Shops & Small Business

From a warung in East Java to a mercado in the Amazon — PROTONSOL keeps the lights on, the freezer cold, and the register running when the grid can't.

06 / Regional Presence

Three countries. One promise.

EQUATOR BRASIL THAI INDONESIA
Indonesia
Live
HQ · Jakarta Service · Bali / Surabaya / Medan
Thailand
Live
HQ · Bangkok Service · Chiang Mai / Hat Yai
Brazil
Live
HQ · São Paulo Service · Manaus / Recife / Salvador
Next markets
Q4 2026
Philippines · Vietnam · Mexico · Nigeria
07 / Owners

What homeowners tell us, in their own words.

Indonesia · Maluku Islands
Before PROTONSOL, we ran the generator only for two hours a night. Now the children can read, the freezer works, and my wife finally has a fan that runs until morning.
A
Ahmad R. Fisherman · CORE 10 Owner
Thailand · Nakhon Ratchasima
Three monsoons in — no issues, no service call. I recommend it to every neighbor.
S
Somchai P. Farmer · CORE 5 Owner
Brazil · Amazonas
A rede elétrica nunca chegou aqui. PROTONSOL chegou.
M
Maria L. Shopkeeper · CORE 20 Owner
08 / Frequently Asked

Everything you're wondering, answered.

How much does a complete system really cost — delivered and installed?
Our CORE 5 starts at USD $1,890 for the equipment; professional installation in Indonesia, Thailand, or Brazil adds roughly $300–$700 depending on distance and roof type. Remote islands may incur additional freight. A certified technician will provide a final quote after a 15-minute video consultation — at no cost.
Can I power my whole house — refrigerator, AC, TV, everything?
A CORE 10 comfortably runs a typical tropical household: LED lighting, refrigerator, ceiling fans, TV, phone charging, and a water pump, with evening buffer. For air-conditioning or electric cooking, we recommend CORE 20 or a stacked configuration. Our team will calculate your actual daily kWh requirement for free during consultation.
What happens during the rainy season?
Tropical PV systems are sized for the worst month, not the best. We oversize the panel array by 20–35% so that even overcast monsoon days generate enough energy to recharge the battery. For sustained multi-day storms, our battery bank provides 2–3 days of typical household usage from a full charge.
How long does the battery last?
Our LiFePO₄ cells are rated for 6,000+ charge cycles at 80% depth of discharge. At one cycle per day, that's approximately 16 years of daily use before capacity drops below 80% of new. Our 10-year warranty covers you through the vast majority of that lifetime.
Do you offer financing or installment plans?
Yes. We partner with regional microfinance institutions and select banks in Indonesia (BRI, BCA), Thailand (Kasikorn, SCB), and Brazil (Caixa, Santander). Monthly installments are often lower than the diesel fuel the system replaces. Our regional representative can walk you through available options.
What if something breaks?
Every PROTONSOL system reports its own health through our app. If a component fails, our regional service center is notified automatically and dispatches a replacement. Average response time is under 72 hours in serviced zones. The 10-year warranty covers parts and labor on all major components.
◆ Request a Quote

Let's size your home.

Tell us where you live and what you'd like to power. A PROTONSOL engineer will come back to you within one business day with a tailored system recommendation, full pricing, and a no-obligation installation quote.

Indonesia
id@protonsol.com
Thailand
th@protonsol.com
Brasil
br@protonsol.com
We respond within 1 business day · Your data stays with us

Thank you — your request is in.

A PROTONSOL engineer from your region will contact you within one business day.