SolarKrasibCalculate

Understand solar.
Plan for your home.

Understand solar before installation. Calculate bills and loan payments, then choose what works for your home.

Calculate for your homeExplore the solar simulator
Illustration of a home in Thailand with rooftop solar panels
01

Understand your electricity bill

Separate kWh, usage times and tariff rates.

02

See every monthly payment

Compare interest and money left after repayments.

03

Learn from real questions

Prepare for installation using community research.

Is solar worthwhile for your home?

Enter your electricity use for an overview before exploring details.

How we calculate

Start with your home

kWh
Home in the eveningHome during the day
Adjust system and financing
Average first-year bill savings

฿ 1,941 / month

Cash flow after costs

over25 years
-30k137k304kStartYear 5Year 10Year 15Year 20Year 25

Example: 5 kWp · THB 150,000 · 20% down · 7-year loan at 5% reducing-balance interest · No exports

Understand solar before installation

Important topics, explained clearly.

All solar guides
01
Planning solar

Home solar cost in Thailand: compare 3, 5 and 10 kW quotes

Compare solar quotes by panels, inverters, batteries, roof work, taxes and maintenance before modeling your budget.

02
Planning solar

5 kW vs 10 kW solar: which size fits your home?

Compare 5 and 10 kW solar using daytime demand, roof space, energy estimates and panel count.

03
Planning solar

Is solar worth it in Thailand? Calculate your payback

Separate bill savings, loan payments, maintenance and replacements to compare solar payback without guaranteed-return claims.

04
Planning solar

Solar battery sizing: convert kWh to Ah at your voltage

Size storage from appliance schedules and understand kW, kWh, Ah, voltage, DoD and efficiency.

Community research

What solar owners
want to share

252 research topics to help you decide what to ask, check and prepare for.

Explore the research register

Why has my bill not fallen after solar?

Start with usage times and surplus generation.

Does the panel warranty include labour?

Separate equipment warranties from after-sales service.

What documents should I get before paying a deposit?

Questions the contract should answer.

Sources and evidence levels included · Not issue-frequency statistics

Questions before you start

Understand your options before investing.

Will solar reduce my electricity bill to zero?+

Not necessarily. Homes still buy electricity when production is insufficient or there is no sunlight, and fixed service charges may remain. Savings depend on usage timing and the installed system.

Does three-phase electricity cost more than single-phase?+

Phase count is not a tariff category. Check customer class, voltage and normal or TOU rates on the bill, as well as potentially different system costs.

Will savings cover the loan payments?+

Compare savings after maintenance with every monthly payment, and assess the down payment and fees separately. The calculator shows both monthly differences and cumulative cash flow.

Can community reports be treated as conclusions?+

Use them as questions and checklists, not prevalence statistics or confirmation of allegations. Each issue shows its sources and evidence level.