Monthly Archives: November 2014

… Not just the loud parts!

The 2014 Pet Rock Festival … Second stage “tech world”

The generator had the day off ... The system ran for 5 hours and 15 minutes, used 1.7 kWh of power ... Only using 24% of the 550 amp hour battery!

The generator had the day off … The system ran for 5 hours and 15 minutes, produced 1.7 kWh of power … And only used 24% of the 550 amp hour battery!

When you replace the “traditional” gasoline or diesel generator with battery power some really neat things happen.

The first thing you might notice is that there is no noise.

And with no generator running in the background there are no exhaust fumes, no heat or extra cans of fuel to worry about. That means the batteries can be placed almost anywhere, eliminating the need for the long extension cords, cable ramps, tape … and the time normally involved with getting power where you need it!

Great seats!  ... They probably do not know they are sitting next to the "generator"!

Great seats! … They probably do not know they are sitting next to the “generator”!

With a properly sized battery system … there is no need to refuel … No flammable liquids … or downtime.

The batteries can be set up and used anytime, anywhere and theoretically can be sized to do almost anything.

Anything? … Well … Almost anything … Fairbanks is pretty small as far as cities go!

Fairbanks, Alaska has the world’s largest rechargeable battery (according to Wikipedia as of 6/17/14).

From the Golden Valley Electrical Association web site …

“Completed in December of 2003, the BESS (Battery Energy Storage System) can provide 27 megawatts of power for 15 minutes in the event of a generation or transmission related power outage.”

“The BESS responded to 60 events in 2013 … Preventing a total of 310,492 member outages … That’s an average of over 5,000 customers per outage!”

http://www.gvea.com/energy/bess

Their battery system was sized for the job … And from what I have read … Does the job very well.

My 12 volt systems are quite a bit smaller … My largest, a 1050 amp hour system is roughly the equivalent of a 6,000 – 8,000 watt generator … My smallest, a 276 amp hour system is roughly the equivalent of a 1,500 – 2,000 watt generator.

Perfect for a lot of small events and festivals!

When you use a battery system, power is removed from the batteries only as it is needed, with the rest of the stored power staying in the batteries … To be used as it is needed.

With a generator, electricity is produced at a constant rate and you use what you need … With any extra power /electricity from the generator being wasted.

With a battery system the louder things need to be … the faster the power is removed from the batteries … The loudest “peaks” of a performance draw the most power …  The spaces in between those peaks draw a lot less power from the batteries … With the quiet parts in between the notes drawing almost nothing at all … extending the running time of the system for the event.

Music with a wide dynamic range gets a double benefit when switching to a solar charged battery power source … Aside from being “clean and green” … The overall dynamic range is greatly improved by removing the “noise floor” created by even the quietest of generators.

You will be pleasantly surprised to hear even the quietest sections of the performance … Not just the loud parts!

Enjoying the sounds of the Boston Pops Brass Ensemble in beautiful Franklin Park, 6/24/2012

Enjoying the sounds of the Boston Pops Brass Ensemble in beautiful Franklin Park, 6/24/2012