Technical Note about Enphase Microinverter System Grounding
Enphase Microinverters with Integrated Ground have DC integrated ground, they do not require a GEC
Design a Renewable Energy System
Off-Grid Solar System Design
Learn how to design a DIY off-grid solar power system with this video series covering the loads list, battery bank, PV array, controller & inverter.
Off Grid Solar System Sizing Calculator
This Off-Grid Solar System Sizing Calculator helps you size the battery bank, Watts of solar power, and charge controller you need for an off-grid solar system.
kWh Calculator
This kWh calculator answers the question 'How much solar power do I need?' by helping to calculate your home electricity usage in kWh.
Off Grid Solar Power System Quote Request
Get a free off grid solar power system quote with this interactive tool and we'll help you plan, design & shop for an off-grid solar system.
Grid-Tied Solar System Design
Learn how to design a grid-tied solar system and choose the right solar panels, inverter, racking & overcurrent protection in this video tutorial.
Grid Tied Solar System Sizing Calculator
This Grid Tied Solar System Calculator helps you determine the Watts of solar power and number of solar panels needed for a grid-tied solar power system.
Grid Tied Solar Power System Quote Request
Use this free grid tied solar power system quote tool whether you're just learning about grid-tied solar systems or want help planning one.
How to Size a Deep Cycle Battery Bank
Learning how to size a deep-cycle battery bank correctly is one of the most important parts of DIY solar or renewable energy system design.
Expanding a Deep Cycle Battery Bank
It’s possible to expand a deep cycle battery bank that's in use. Learn what to know before expanding a battery bank with new lead acid/lithium batteries.
Batteries: Series and Parallel Connections
What is connecting batteries is series vs. connecting batteries in parallel? Learn how wiring batteries in series vs. parallel affects voltage.
How to Charge a Deep Cycle Battery Properly
This two-part video series explains how to charge a deep cycle battery properly for use in a battery-based solar or renewable energy system.
How to Wire a Solar System
Learn how to wire a solar system to NEC standards in this detailed DIY solar power wiring video tutorial covering both off-grid and grid-tied systems.
Off Grid Solar System Wiring Diagram with Video
DIY solar video on connecting a solar panel system’s wiring to house wiring in an off grid solar system. Follow along with our wiring diagram!
Wire Sizing Chart for 12V, 24V, and 48V DC Systems
Information on wire sizing and a universal AWG/mm2 wire sizing chart to help in designing a 12V, 24V, or 48V DC renewable energy system.
Maximum Ampacity (Current Capacity) for Wire & Cable
These tables show the allowable ampacity (maximum current the cable can carry) for wires in conduit, raceway, cable or directly buried.
Recommended Inverter Cable, Breaker & Fuse Sizing
This DIY solar resource helps DIY solar installers to size cables, breakers, and fuses for a battery-based 12V, 24V or 48V solar inverter.
Sizing PWM Solar Charge Controllers
When sizing PWM solar charge controllers in renewable energy systems, you must know the solar panel current and voltage and battery voltage.
Sizing MPPT Charge Controllers
When sizing MPPT charge controllers in renewable energy systems, understanding battery voltage, input voltage and output current is key.
Power Ratings for Common Appliances
Use this database of power ratings for common appliances to estimate the Watt-hours your renewable energy system needs to supply.
Schematics: Wiring Solar Panels and Batteries in Series and Parallel
Diagrams, examples, and schematics for wiring solar panels in series and parallel and schematics for wiring batteries in series and parallel.
Decoding Solar Panel Output: Voltages, Acronyms, and Jargon
Why are there so many voltages listed on solar panels? What is open circuit voltage, voltage at max power for solar panel output?
Solar Maps for the USA
Solar maps helpful for planning a solar panel installation in the USA, including a solar insolation/irradiance map and a solar PV potential map.
WEEB Equipment Grounding Strategy
Information on racking solar panels using Wiley Electronics' washer-based WEEB (Washer, Electrical Equipment Bond) grounding products.
Solar Maps for the Caribbean, Mexico & Central America
Solar insolation/irradiance and PV potential maps helpful for planning a solar panel installation in the Caribbean, Mexico & Central America.
Solar Insolation Data for US Cities
A table of the high, low, and average solar insolation measurements for many large cities in the United States.
Solar Insolation Map for the World
Solar maps helpful for planning a solar installation anywhere in the world, including a solar insolation/irradiance map and a solar PV potential map.
Solar Maps for South America
Solar maps helpful for planning a solar panel installation in South America, including a solar insolation/irradiance map and a solar PV potential map.
Solar Water Pumping: Water Storage, Control and Monitoring
Learn about the water storage/management, plumbing, and monitoring aspects of a DIY solar water pumping system.
Battery Backup Power System Quote Request
Get a free battery backup power system or hybrid system quote. Battery backup works whether or not you have solar or are grid-connected.
How To Size Pipe for Solar Water Pumping
A table of friction loss in plastic pipe with standard inside diameter (SIDR), useful for sizing pipe in a solar water pumping system.
Solar Water Pumping System Quote Request
Get a free solar water pumping system quote with this interactive tool and we'll help you plan, design & shop for your solar water pumping system.
Tips on How to Site a Small Wind Turbine for Your Location
Positioning a wind turbine properly on your land optimizes the wind power it generates. Learn how with these wind turbine siting tips.
Wind Resource Maps for USA, Puerto Rico & US Virgin Islands
Maps of wind speeds and wind power potential in the United States, Puerto Rico, and the U.S. Virgin Islands for planning wind power systems.
Wind Resource Map for Mexico
A large scale overview of wind power resources for all of Mexico, including a map and table for wind power classes at 10 meters & 50 meters.
Deciding Which Solar Electric System is Right for You
Interested in solar but need help deciding which kind of solar electric system is right for you? Start here for helpful info & resources.
Glossary of Alternative Energy Terms
A glossary of alternative energy and renewable energy terms, definitions, and synonyms for use as a resource in a DIY renewable energy projects.
altE 2022 Virtual Solar Conference Session Recordings
Watch 24 recorded webinar sessions from our 11th annual Virtual Solar Conference. Sessions from OutBack, IronRidge, SimpliPhi & more.
altE 2021 Virtual Solar Conference Session Recordings
Watch 8 recorded webinar sessions from the altE 2021 Virtual Solar Installer Conference. Sessions from OutBack, Schneider, KiloVault & more.