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Solar Myths vs Facts in the Philippines
Ten common solar myths circulating in Filipino DIY groups, corrected with the actual facts and links to the full math behind each answer.
Albert 6 min read
Solar Trivia Every DIY Installer Should Know
Ten facts about solar panels, batteries, and Philippine peak sun hours that surprise most first-time DIYers — with the practical consequence of each one.
Albert 5 min read
Top Tools You Need to Setup Your Solar
The 8 physical tools you need to wire, mount, and test a DIY solar setup — MC4 crimping kit, digital multimeter, torque wrench, and more — with typical Philippine pricing.
Albert 6 min read
How Many Solar Panels Fit on a 60sqm Roof?
A 60sqm Philippine roof usually has 39-45sqm usable after clearances. That fits roughly 15-22 panels, landing around 8.5-10.5kW regardless of panel size.
Albert 8 min read
THHN vs THWN vs THHN/THWN-2: What the Letters Mean
THHN is 90C dry but drops to 75C wet. THWN holds 75C either way. THWN-2 holds 90C wet and dry. Most wire sold is dual-marked THHN/THWN-2.
Albert 8 min read
Middle East Tensions Are Speeding Up Philippine Solar
Philippines targets 35% renewable energy by 2030. Middle East tensions spiked LNG prices ~80%, pushing Meralco rates up and rooftop solar to ~1,300MW.
Albert 7 min read
Solar + Battery vs a Generator: Which Actually Costs Less?
A diesel generator's fuel cost alone runs about ₱20/kWh, and gasoline generators over ₱44/kWh — both pricier than Meralco's own ₱14.83/kWh grid rate. Real numbers on generator vs solar+battery total cost of ownership.
Albert 6 min read
Can You Finance a Solar Setup in the Philippines?
You don't need ₱150,000 upfront. Real financing options in the Philippines: Pag-IBIG's 5.75-6.25% solar loan, bank green loans, 0% in-house installment, and a phased DIY approach that spreads the cost across months.
Albert 6 min read
How Long Until Solar Pays for Itself? Real Payback Period Math
The naive payback math (cost ÷ monthly savings) is close, but it ignores rising Meralco rates, panel degradation, and battery replacement cost. Here's the real 25-year math, sourced from Meralco's own rate history.
Albert 7 min read
How to Clean Solar Panels Safely
Dirty panels can lose 5-25% of output, but the wrong cleaning method causes real damage. Why thermal shock and pressure washers crack panels, the safe method, and the roof-safety risk people underestimate.
Albert 6 min read
How Much Shade Is Too Much Shade?
Shade on solar panels isn't proportional to output loss. How bypass diodes and series-string wiring turn a small shadow into a bigger loss than it looks, and when to switch to parallel wiring or optimizers.
Albert 7 min read
Can Solar Power Run My Aircon?
Yes, but the aircon's startup surge — not its running watts — is what trips undersized inverters. Starting vs running watts explained for 1HP window-type and 1.5HP inverter-type aircons, with real sizing numbers.
Albert 6 min read
Why You Don't Need Solar Power
A reverse-psychology look at the four excuses we hear most in the DIY groups: money to burn on Meralco, avoiding the responsibility, loving a scheduled brownout, and paying VAT on a system loss charge the government wants to remove.
Albert 5 min read
Do Solar Panels Lose Efficiency as They Age?
Real degradation numbers: tier-1 panels lose ~0.4-0.5% output per year, budget panels ~0.8-1.0%. Here's what that means for your ROI when most Philippine systems pay back in 3-5 years.
Albert 5 min read
Does Solar Panel Angle and Direction Matter in the Philippines?
Tilt and orientation advice from US and European sources doesn't apply near the equator. Real optimal tilt angles for Metro Manila, Cebu, and Davao, and why shading matters more than a few degrees off.
Albert 5 min read
Can Solar Panels Work Without a Battery?
Yes, panels work fine without a battery — but a hybrid inverter alone doesn't mean you have backup power. What happens to excess power, net metering explained, and when skipping the battery is a mistake.
Albert 6 min read
Do You Need to Ground Your Solar System? Grounding Explained
Grounding gives fault current and lightning surges a safe path to earth — and your SPD is useless without it. Equipment vs. system grounding, PEC requirements, and what to buy, explained for beginners.
Albert 9 min read
Solar Panel Output in Rain: Sizing Your System (PH)
Rain cuts solar output to 10-20% of rated capacity — here's what that means in real watt-hours, how many rainy days your battery survives, and the MPPT risk that can drop output to zero.
Albert 7 min read
How to Select a Solar SPD (Surge Protective Device)
DC and AC SPDs are different products, and Uc — not kA — is the spec that decides if one fits your system. Class, waveform, and voltage rating explained.
Albert 8 min read
How to Choose a Solar Panel (Philippines, Price per Watt)
Two '550W' panels from the same brand can differ 10%+ in price per watt. Here's how to compare real listings — mono vs N-type, Voc, degradation, and warranty.
Albert 8 min read
How to Choose the Right Solar Wire Size (AWG vs mm²)
Wire size comes from your circuit's actual peak current, not your inverter's wattage class. PEC §6.90.2.2 sets the multiplier — here's the math.
Albert 7 min read
Why Your Neighbor Pays a Different ₱/kWh Than You (Meralco 2026)
The ₱14.83/kWh Meralco quotes is calculated for a 200 kWh household. Here's what really makes your rate per kWh differ from your neighbor's.
Albert 9 min read
What Size Solar Battery Do You Actually Need? (Philippines 2026)
Size a solar battery from your overnight kWh, not the sticker price — then compare units on price per usable kWh, where our catalog spans 6.6x.
Albert 11 min read
How to Choose the Right Hybrid Inverter (Philippines 2026)
Five specs decide which hybrid inverter to buy: battery voltage, continuous vs surge watts, max PV array wattage, max PV Voc, and battery charging current.
Albert 12 min read
5 Essential Safety Components Every DIY Solar Setup Needs
Circuit breakers, SPDs, isolators, grounding, and RSDs — these 5 safety components are non-negotiable for any DIY solar setup in the Philippines.
Albert 8 min read
Solar System Losses Explained: Where Power Disappears (Philippines 2026)
Where solar energy is lost in a home setup: panel harvest, DC and AC wiring, hybrid inverter conversion and idle draw, battery round-trip — with acceptable ranges and Philippines-focused tips.
Albert 8 min read
5 Common Solar Setup Disasters in the Philippines (And How to Avoid Them)
Five costly mistakes Filipino homes make — plus what to ask installers before you commit.
Albert 9 min read
12V vs 24V Solar Setup: Which One Should You Choose? (Philippines 2026)
Compare 12V vs 24V DIY solar in the Philippines: costs, wire sizing, safety, scalability, and when to pick each voltage for brownout backup and home loads.
Albert 9 min read
Inverter vs Hybrid Inverter in the Philippines (2026 Guide): Which One Should You Choose?
Confused between a standard inverter and a hybrid inverter? This 2026 Philippines guide explains differences, MPPT pairing, safety, costs, and the best use case for each setup.
Albert 8 min read
What Are Peak Sun Hours? How Philippine Weather Affects Your Solar Output
Learn what peak sun hours (PSH) are and how sunny, cloudy, rainy, and stormy weather in the Philippines affects your solar panel output — with real efficiency numbers for each condition.
Albert 9 min read
Different Types of Solar Batteries in the Philippines (2026 Guide)
A complete 2026 guide to solar battery types available in the Philippines — Flooded Lead-Acid, AGM, Gel, LiFePO4, and Sodium-Ion. Compare lifespan, price, safety, and best use cases for each.
Albert 7 min read
How to Maintain and Clean Your Solar Panels
A complete, Philippines-specific guide on how to clean and maintain your solar panels — covering the dry season, post-typhoon inspections, bird droppings, shading, and inverter monitoring.
Albert 8 min read
What Are the Main Functions of a Hybrid Inverter?
Learn the 6 core functions of a hybrid inverter — from charging batteries and converting solar power, to built-in safety features that protect your entire solar setup.
Albert 11 min read
How Long Does a Solar Setup Last? (Every Component Explained)
Solar panels last 25–30 years, batteries 3–15 years, and inverters 10–15 years. See every component's lifespan, what degrades first, and how fast you recover your investment in the Philippines.
Albert 16 min read
Solar Setup Maintenance
Learn the essential solar setup maintenance tasks to keep your system efficient, safe, and long-lasting. Simple tips for Filipino homeowners using solar.
Albert 4 min read
How to Convince Your Wife to Go Solar
Struggling to convince your wife to go solar? Here are 5 funny but effective ways Filipinos can make the switch to solar energy—without starting World War 3 at home.
Albert 5 min read
How To Wire an ATS or Automatic Transfer Switch?
How to wire an ATS or automatic transfer switch based on two priority? Solar inverter priority or distribution utility priority
Albert 4 min read
What are the Different Solar Setups in the Philippines?
Learn the essential differences between on-grid, off-grid, and hybrid solar setups to find the best system for your needs in the Philippines.
Albert 5 min read
Things You Need to Start Your DIY Solar Setup
A simple guide to the essential components for a home DIY solar power system, including solar panels, charge controllers, batteries, inverters, and more.
Albert 8 min read
How To Determine Breaker Size Between Battery and Inverter
Choosing the right breaker for the battery-inverter link is critical for safety and performance. This post shows two simple ways to size it: The Inverter Size Method and The Max Load Method.
Albert 4 min read
MCB vs MCCB: Which one is better?
What are the differences between MCB and MCCB? When to choose MCCB over MCB?
Albert 4 min read
The Cost of a Solar Setup: How Much Does a Solar Setup Cost?
How much does a solar setup cost, and how long does it take to get your investment back?
Albert 7 min read
Why Go Solar? Why It's the BEST Time To Go Solar?
I remember when I first got into solar power. The whole thing felt so complicated, full of technical terms and big numbers. But once I got my head around it, I realized it's actually one of the smartest...
Albert 8 min read