Explanation of Metrics in Email Reports

TOTAL BTUs (Thousands)

Represents the total heat delivered by all installed heat pumps and includes the heat of extraction (geoexchange), the thermal energy produced by the compressor, and the hot water generation, if measured. Fuel Equivalents represent the amount of conventional heat fuel that would be required to provide the same total BTUs delivered.

Heating Degree Days

Heating degree days represent the average outdoor air temperature relative to the base temperature of 65°F. The cumulative heating degree days for the heating season (Sept 1 to date) are summarized for both the current year and previous year. If your monitoring system was installed after Sept 1 of the previous year, the data for the previous year is incomplete as indicated by '---' in the email report.

Operating Costs

The total operating cost is computed from the measured electricity consumption for each monitored component (heat pumps, circulating pumps, and electric auxiliary). Savings represent the difference in the cost of electricity with that of the cost of the other conventional heating fuels.

Carbon Offsets

Carbon offsets are calculated based on the Net Renewable Thermal Energy defined as the total useful thermal energy less electrical energy used in its production. Carbon emissions associated with electricity production are taken from the US EPA eGRID 2012 data product, and vary depending on location of installation. Carbon offsets relative to Fuel Oil and estimated equivalent Trees Planted use the US EPA.

Previous Blog Posts

Geothermal RECs in NH — 2014 RECs SOLD!

Matt Davis  -  Jun 20, 2015  -  1 Comments
Another milestone reached After more than three years since the passage NH SB-218, another major milestone has been reached. This week, Revolution Energy and Knollwood Energy teame...

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New Hampshire Recognizes Geothermal Heat Pump System as a Renewable Energy Facility

Matt Davis  -  Dec 10, 2014  -  No Comments
Today, the New Hampshire Public Utilities Commission approved Rolling Dog Farm as a Class 1 Thermal Renewable Energy Source, the first geothermal system to be recognized under the ...

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NH Thermal RECs: What you need to know

Matt Davis  -  Jul 17, 2014  -  4 Comments
Thermal Renewable Energy Certificates (RECs) in New Hampshire In 2012, the New Hampshire Legislature passed SB218 that formally incorporated ‘useful thermal energy generated ...

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Performance Monitoring – COPs

Matt Davis  -  Jun 13, 2013  -  , , ,  -  Comments Off on Performance Monitoring – COPs
Introduction This article is the second in a three-part series prepared by Ground Energy Support LLC (GES) that will highlight some of the lessons learned from over 100,000 hours o...

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Performance Monitoring – Ground Loop

Matt Davis  -  Jun 01, 2013  -  , , ,  -  Comments Off on Performance Monitoring – Ground Loop
This article is the first in a 3-part series prepared by Ground Energy Support LLC (GES) that will highlight some of the lessons learned from over 100,000 hours of GSHP real-time m...

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Performance Monitoring Series

Matt Davis  -  May 25, 2013  -  , , ,  -  Comments Off on Performance Monitoring Series
In Spring 2013, we began publishing a series of articles on Performance Monitoring that highlight the lessons learned from over 100,000 hours of geothermal heat pump system monitor...

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Measurements Confirm GSHP Cost Savings

Matt Davis  -  Jul 10, 2012  -  Comments Off on Measurements Confirm GSHP Cost Savings
One unique capability of the GxTracker™ is to accurately document both the energy produced by a GSHP system as well as the energy consumed.   Combining this system-level perfor...

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Geothermal as a Renewable Energy

Matt Davis  -  Jul 02, 2012  -  , , ,  -  Comments Off on Geothermal as a Renewable Energy
Recent Maryland legislation formally recognizing geothermal heating and cooling (GHC) system as a renewable energy resource has great potential for increasing the adoption of groun...

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  • Our Mission

    Ground Energy Support strives to provide high quality data and objective analyses to support the ongoing development of ground source heat pump technology.
  • What customers say:

    • Your system has been absolutely crucial in helping me monitor problems as they occur, right at my fingertips. Doing without it would be like driving a car without any gauges. - Pete W., Homeowner
    • It is interesting to follow the data and understand what the system is doing. …Love this information, wish I had known about it before – I am really glad I installed it. – Steve H., Homeowner
    • I look at it every day! -- Paul B., Homeowner
    • I did not know that my oil heat circulator was cycling on every 6 hrs until this monitoring showed me that. Why add heat 4 times a day in summer?! I turned it off after GES alerted me to what was happening.” Pete Tavino, P.E., IGSHPA Instructor
    • I have been checking the GxTracker, and noticed that the total heat rejected was less than it should be. I checked it out and the machine was a little low on refrigerant so I recharged it. I checked the website and system efficiency improved by almost 40%, cool! -- John S., Geothermal Professional
    • We just ran the AC for first time last night … Pretty cool to see all the data! -- Greg M., Homeowner
    • Well, more “kudos” to Ground Energy Support. I just got a call from my installer who will address this issue. Again, thanks so much for everything. --Joseph P., Homeowner