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Guide Category

Renewable Energy guides

U.S. solar, battery storage, wind, and hybrid power workflow

Guides in category
3
Reading time
82 min
Levels
1
Renewable energy guides on this hub focus on early-stage U.S. project decisions for solar PV, battery storage, backup runtime, inverter fit, and small wind or hybrid systems. The emphasis is practical electrical screening: start from the real load and outage objective, translate that into array size or usable storage, and then identify the utility, service-equipment, structural, and code questions that still require project-specific review.

Intermediate Guides

Solar PV system sizing

Solar PV System Sizing & Inverter Guide

Size solar PV arrays from monthly kWh, panel count, inverter limits, battery backup needs, and payback assumptions.

32 minFeatured
Battery storage kWh sizing

Battery Capacity Formula Guide | Solar and UPS Sizing Workflow

Use this battery sizing guide to choose load kWh, autonomy days, DoD, efficiency, temperature, Ah, voltage, and backup-time inputs.

30 min
Wind turbine power curve

Wind Power Systems for U.S. Projects: Site Screening, Hybrid Design, and Electrical Integration

Screen wind and hybrid wind-solar-storage projects in the United States using wind resource, turbine power, electrical architecture, interconnection, and maintenance planning.

20 min

Key Concepts

Review the core ideas that shape this guide family before moving into detailed articles.

Load-first PV and storage sizingStart with measured energy use, demand peaks, and outage goals. That keeps solar array and battery sizing tied to an electrical purpose instead of a generic panel count.
Usable battery capacity vs. inverter powerBattery kWh describes how long energy lasts, while inverter kW describes how much load can be served at one time. Both have to work together for a backup or hybrid design to make sense.
Inverter and service-equipment fitA good screening workflow checks inverter AC rating, DC-to-AC ratio, charging behavior, interconnection or backfeed limits, and whether the existing service equipment can support the concept.
Wind and hybrid site screeningSmall wind only makes sense when wind resource, tower location, maintenance access, and electrical interconnection are realistic. Hybrid systems add resilience only when the operating profile justifies the extra hardware.

Frequently Asked Questions

What should be sized first on a solar-plus-storage concept?
Start with the real load profile and the outage objective. Daily energy use tells you how much PV or storage may be needed, while the largest simultaneous loads tell you how much inverter output and backup staging the concept has to support.
What is the difference between battery capacity and backup runtime?
Battery capacity is the stored energy available to do work, usually tracked in usable kWh or Ah at a stated voltage. Backup runtime is the result after you apply the actual load, inverter efficiency, discharge limits, temperature, and aging. Two systems with the same battery nameplate can deliver very different runtime if the served load is different.
When does a renewable-energy concept need more than a calculator or guide?
As soon as the project depends on utility interconnection rules, service-equipment limits, conductor routing, structural loading, site-specific setbacks, or adopted code interpretation, the concept has moved beyond screening. The calculator or guide should narrow the options, not replace project-specific engineering and permitting review.
When is small wind worth screening for a U.S. property?
Small wind becomes worth screening when the site has documented wind resource, practical tower placement, maintenance access, and a load or resilience goal that makes the extra mechanical hardware worthwhile. It is rarely a drop-in substitute for solar; hybrid designs work best when the operating profile truly benefits from both resources.