[RE-wrenches] low cost DAS systems

Tue Apr 13 12:16:11 PDT 2010

I am joining this thread a little late, so I may have missed a bifurcation
into a related area. 

We have need for a DAS system that does the following:

(1) Monitors inverter output, including some bigger commercial sized
inverters from Satcon and SMA (100 kW to 500 kW)
(2) Monitors utility input at service panel
(2) Monitors several loads (up to five) via the service panel
(3) Irradiance and temperature would be great but not absolutely necessary
(4) Some sort of alarm system that would trigger at a programmable kW
threshold for the utility input.

What we are trying to do is monitor not only the PV system but the utility
demand and key loads as well, and to come up with a strategy for shedding
load to keep the demand below a certain amount.

I know this is a fairly tough spec, and we may have to do some customization
and/or programming to get what we want.

- Peter

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parrish at calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885

-----Original Message-----
From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Jeff Irish
Sent: Monday, April 12, 2010 12:37 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] low cost DAS systems

The Locus system is less than $1,000 for single phase.
Jeff

-----Original Message-----
From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of
wlbryce at pineridgeproducts.com
Sent: Monday, April 12, 2010 2:50 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] low cost DAS systems

I think the big this here is Low cost? Maybe we should define the price
range so we can get a better fell of the product range?

Logan

> Chris,
>
>
>
> Locus Energy has a low cost, revenue grade system that will work with
> all inverters.  We have several dozen deployed and they're working
well.
> Customer needs to have a high speed internet connection.
>
>
>
> www.locusenergy.com <http://www.locusenergy.com/>
>
>
>
> I've tried the TED and found it to be more of a toy than a serious
> contractor product, although it may meet some user's needs.  The Locus
> system is more accurate and robust, with much greater data storage.
>
>
>
> Jeff Irish
>
> Hudson Valley Clean Energy
>
>
>
>
>
> ________________________________
>
> From: re-wrenches-bounces at lists.re-wrenches.org
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Marco
> Mangelsdorf
> Sent: Monday, April 12, 2010 1:12 PM
> To: chris at solarandwindfx.com; 'RE-wrenches'
> Subject: Re: [RE-wrenches] low cost DAS systems
>
>
>
> Chris,
>
>
>
> I've had one of my guys research this same question a while ago and
the
> conclusion was the as far as low-cost DAS systems, Fat Spaniel was the
> big winner, as in under $1,000 which includes a year's worth of
> monitoring.
>
>
>
> Cheers,
>
> marco
>
>
>
> Good Day Wrenches,
>
>             I'm looking for suggestions for a low cost DAS system for
> home/small commercial use. It just seems to be such a useful basic
tool
> to verify performance other than just the Kwh meter. I'd like to add
> this to all of our clients quotes and projects. Looking for the basics
> like module temperature and irradiance and it would be nice if it
would
> tie into the existing inverters DAS like an Enphase, Fronius or SMA to
> name a few since they already have inverter and PV in/output
> information. Or is Fat Spaniel and Helitronics my only options
> otherwise? Thanks for the help ahead of time.
>
>
>
> Christopher
>
>
>
>                            Chris Schaefer's
>
>
>
>
>
>
>
>
>
> WHERE KNOWLEDGE EQUALS POWER INDEPENDENCE
>
>
>
>
> Specializing in Off-Grid Electricity for Remote Homes
>
> Grid-Tied Power for Residential and Commercial Sites
>
>
>
> Tel 585-229-2083 ~ Cell 585-748-1870
>
> 5115 South Hill Road
>
> Canandaigua New York 14424
>
> www.solarandwindfx.com <http://www.solarandwindfx.com/>  ~
> chris at solarandwindfx.com
>
>
>
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