SUNRNR of Virginia, Inc.
("Sun Runner")
Why SUNRNR? Comparisons
| There are a growing number of solar devices out there. We are one of several products that use the term "solar generator" although a SUNRNR may be recharged by many sources. We are constantly being asked how our units are different or even better than others. We also put much effort into energy education with articles like Choosing a Portable Renewable Energy Generator being a good starting point. In comparing any products, the application and use of that product must be kept in mind. We have had to turn away some customers when we knew a SUNRNR wasn't the correct choice for their application for whatever reason. The following is an attempt to offer a fair and non-negative comparison to some other products. Our Specifications page is a handy reference when doing your own comparisons. You may also wish to visit the "links" page of SolarStik, where they admirably list links to other solar generator styles, sizes, systems, etc. and great educational page discussing the benefits over gas generators - very impressive! |
Buyer beware If it is difficult to document specifications or numbers seem too good to be true, beware. Two most notable bottom lines are inverter Watt capability (what equipment you can run) and battery Watt-hours stored (how long you can run it). (More regarding these important specifications on the Energy Req Worksheet page.) |
Portability Several products have great portability - lightweight, handcart, etc. However, with today's rechargeable battery/energy storage technology, power available is directly proportional to weight, which means if it's super easy to move, it probably won't run much for long. Also, consider whether you want the generator detached from the panels since some are combined. There are also portable, but trailer-hauled versions - again ... application. |
Inverter Very important. A SUNRNR system is designed so that the inverter can ask the battery to start a 7000 W load, handle it, and run it at 3500 W continuous after starting. This is power tool, microwave, welder, compressor, air conditioner, washing machine territory. One other system might come close, but is huge. |
Battery/Energy Storage The AGM battery we use is 245 amp-hours, realistically 2000 Whrs stored (245 amp-hr x 12 V DC = 2940 Whr ideally). Other generators range from 50-400 amp-hours (600-4800 Whr ideally). SUNRNR offers the best value in $/Whr stored (see below). |
Cost per Whr It can be tricky to do an apples-to-apples comparison because of all the variables involved. One metric that could be used is cost per Whr stored (calculated and ideal, not realistic, storage). A SUNRNR base model is currently just over $1.29/Whr. One other is comparable to that, but lacks inverter power. Others range from $2 to $3 per Whr stored (when you can find specs and price). |
Options/Design In your comparisons, be sure to consider the following depending on your application:
|
And even if you are not ready to buy, please keep checking back with us. We are constantly in R&D planning new products. And we are considering new distributors daily. See Distributors if you would like to be one.
SUNRNR vs top-of-line gas generator of same power output
| Weight, lb | 240 | 165 |
| Noise, db | 0 | 58 |
| Endurance at 1/4 power, hr | 3 | 20 |
| Gas required for above, gal | 0 | 3.4 |
| Carbon footprint for above, kg CO2 | 0 | 30 |
| Cost per generator | ~$3800 | ~$2000 |
| Cost for 540 gal gasoline or 3000 hrs operation | $0 | ~$1350 |
| Maintenance required | Minimal | Oil change, filters |
