BULBAT
Batteries, solar, EVs, and the clean-energy future.
From modelling solar payback and EV charging costs to sizing battery banks, estimating runtime and lifespan, and measuring your carbon footprint, BulBat pairs free hands-on clean-energy calculators with practical guides and a richly illustrated museum. Power smarter, save more.
Solar, Battery & Clean-Energy Calculators
Free tools for solar, storage, and EV planning — solar ROI calculator, EV charging cost calculator, energy storage calculator, carbon footprint calculator, battery runtime calculator, and battery lifespan calculator.
Solar ROI Calculator
Estimate annual generation, bill savings, payback period, and 25-year return on a solar PV system from its size, your sun hours, electricity rate, and incentives
EV Charging Cost Calculator
Work out the grid energy, dollar cost, range added, and cost per 100 miles to charge your electric vehicle from one state of charge to another at home
Energy Storage Calculator
Size a home or off-grid battery bank from your daily energy use, days of autonomy, depth of discharge, and system voltage — in both kWh and amp-hours
Carbon Footprint Calculator
Estimate your annual CO₂-equivalent emissions from home electricity, driving, and natural gas, broken down by category and totalled in kilograms and tonnes
Battery Runtime Calculator
See how long a battery will power a load from its amp-hour capacity, voltage, and efficiency, shown in usable watt-hours, hours, and minutes
Battery Lifespan Calculator
Estimate how many effective charge cycles and calendar years a battery will last from its rated cycles, weekly cycling, and typical depth of discharge
Batteries & Clean Energy Museum
Wander an immersive museum of the technology powering the clean-energy shift — battery types and chemistries alongside solar, wind, and EV breakthroughs, each in its own gallery, so you can get to know the systems behind the transition: how they work, what makes each one matter, and the role they play in storing and delivering clean power.
Tour the museum →From the Journal
Fresh guides on solar, battery technology, energy storage, EV charging, green energy, and home energy efficiency.
How to Choose Energy-Saving Bulbs: Expert Guide
How to Choose Energy-Saving Bulbs: Expert Guide In an era where sustainability is not just a trend but a necessity, energy-saving bulbs have emerged as a pivotal solution to reduce…
Common Lighting Technologies Mistakes to Avoid
Common Lighting Technologies Mistakes to Avoid The world of lighting technology has evolved dramatically over recent decades, offering homeowners, businesses, and communities an array of options that enhance both functionality…
Lighting Technologies Step-by-Step Tutorial
Lighting Technologies Step-by-Step Tutorial The world of lighting technologies has evolved dramatically over time, transforming from simple oil lamps to highly efficient, smart-connected systems capable of adapting to our needs…
Best Energy-Saving Bulbs Tips and Strategies
Best Energy-Saving Bulbs Tips and Strategies In today’s world, energy efficiency is not just a buzzword—it’s a necessity. As we face growing environmental challenges, switching to energy-saving bulbs has become…
Professional Lighting Technologies: Advanced Techniques
Lighting Revolution: Exploring Modern Innovations and Their Impact on Efficiency and Design The evolution of lighting technology has transformed how we illuminate our spaces, blending functionality with aesthetic appeal. From…
Energy-Saving Bulbs for Beginners: Getting Started
Energy-Saving Bulbs for Beginners: Getting Started Discover the world of modern illumination with energy-saving bulbs designed specifically for everyday users like you. These innovative lighting solutions offer remarkable benefits ranging…
Keep Learning
Practical know-how on batteries, solar, EVs, and energy storage, battery-chemistry and clean-energy explainers, and home-efficiency tips, plus a plain-language clean-energy glossary — everything you need to dig deeper and power smarter.
Visit the Learn hub →