Solar panels for your home
How many solar panels a 1,000 or 2,000 sq ft house needs, why square footage doesn’t decide it, and how to work it out from the kWh on your bill.
Read article: Solar panels for your home →☀️ Make your own power
Solar panels, kits and everything you need to produce your own electricity, with the maths in plain sight.
Solar water heater size
What size solar water heater you need for 2, 4 or 6 people: tank litres, collector area and why the number of tubes is misleading.
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Solar panels for an air conditioner
How many solar panels it takes to run a 9,000 to 24,000 BTU air conditioner or mini-split, with the grid or with batteries, and why night changes everything.
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Which solar panel to choose
Monocrystalline, polycrystalline, thin-film or bifacial: which solar panel to choose, what wattage for your system size and what to check on the spec sheet.
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How much solar panels produce
How many kWh 1 kW of solar panels produces per year in 24 cities, how many panels you need on or off the grid, and how to look up your home’s figure.
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Panels, battery and inverter: what limits what
2,000 W of panels, a 100 Ah battery and a 4,000 W inverter: can it run a 2,000 W appliance? What limits each part, with step-by-step maths.
Read article: Panels, battery and inverter: what limits what →
How a solar kit connects
How a solar kit is connected from separate parts (MPPT controller, batteries, pure sine inverter) or with a hybrid inverter, and what to check.
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Solar kits sized by consumption
Three solar kits sized for homes using 45, 150 and 300 kWh a month: panels, batteries, charge controller and inverter, with all the maths shown.
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What’s in a solar kit, part by part
Everything in a solar kit: panels, mounting, PWM or MPPT charge controller, batteries, inverter, transfer switch, cables and protection, and what’s often missing.
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How much solar panels save
How much you save with solar panels, how many years to pay back the investment and what you gain over 30 years: examples with official prices.
Read article: How much solar panels save →