Brooks/Mulligan House
2015 New house at Katywil Farm Community, Colrain Massachusetts
General Energy Use, Strategies and Systems
Energy Use:
This is a super-insulated, passive solar house with a 7.6 kW solar PV system. The heating and DHW is by a Daikin Altherma heat pump system supplying hot water to a radiant slab and radiators. The heat pump is rated to have a COP of over 4.0.
Energy Strategies:
We designed our house to reduce the heat lose and maximize the heat gain without over heating and then add solar PV to power our efficient heat pump system. We do have a small wood stove to use for extended below zero weather.
Zero Net Energy Definition Used
Site Energy Use
Monthly Energy Data and Utilities
Energy Data Type: Modeled, Verified
Electric Utility: Eversource / Western Mass Electric Company
Gas Utility: Amerigas
Other purchased Fuels: No
Datasets and utility bills:
Attachment Size 
Total Energy Use Spreadsheet pdf24.11 KB Power Company Data 526.11 KB Clean Energy Center Data 343.4 KB Solar power generated during 2014 1.33 MB Solar power generated during 2015, ending in October. 1.33 MB HERS certificate 30.36 KB
Datasets and utility bills sources and reliability: Eversource.
Cogeneration
Cogeneration System Description:
NA
Brooks/Mulligan House
Renewables and Energy Balance
Renewable Energy Sources: Renewable energy is generated within the building footprint (e.g. solar PV on the roof)
Renewable Energy System Description & Details
30 SolarWorld Sunmodule Plus SW 255 panels, Half at 45 degrees and half at 27 degrees. Each with a Solaredge P400 Optimizer. The inverter is also a Solaredge Inverter, model SE-7600A-US-U.
Annual renewable energy generated
9,987 kWh
Annual Renewable Energy Generated Data Type
Modeled, Measured
Power Rating
Renewable Energy System Type(s)
Source of Annual Production Data
8,350Watts
Photovoltaics
CEC Production Data Summary.
Storage and Installed Capacity
Energy Storage type
NA
Energy Storage Capacity
Annual Energy Import/Export
Electricity amount (imported from grid)
8,287 kWh/year
Net electricity usage (purchased electricity)
1,262 kWh/year
Electricity amount (credited or exported to grid)
7,025 kWh/year
Natural gas amount (purchased energy)
671 kWh/year
2015 New house at Katywil Farm Community, Colrain Massachusetts
General Energy Use, Strategies and Systems
Energy Use:
This is a super-insulated, passive solar house with a 7.6 kW solar PV system. The heating and DHW is by a Daikin Altherma heat pump system supplying hot water to a radiant slab and radiators. The heat pump is rated to have a COP of over 4.0.
Energy Strategies:
We designed our house to reduce the heat lose and maximize the heat gain without over heating and then add solar PV to power our efficient heat pump system. We do have a small wood stove to use for extended below zero weather.
| Zero Net Energy Definition Used | Site Energy Use |
|---|
Monthly Energy Data and Utilities
Energy Data Type:
Modeled, Verified
Electric Utility:
Eversource / Western Mass Electric Company
Gas Utility:
Amerigas
Other purchased Fuels:
No
Datasets and utility bills:
| Attachment | Size |
|---|---|
| Total Energy Use Spreadsheet pdf | 24.11 KB |
| Power Company Data | 526.11 KB |
| Clean Energy Center Data | 343.4 KB |
| Solar power generated during 2014 | 1.33 MB |
| Solar power generated during 2015, ending in October. | 1.33 MB |
| HERS certificate | 30.36 KB |
Datasets and utility bills sources and reliability:
Eversource.
Cogeneration
Cogeneration System Description:
NA
Brooks/Mulligan House
Renewables and Energy Balance
Renewable Energy Sources:
Renewable energy is generated within the building footprint (e.g. solar PV on the roof)
| Renewable Energy System Description & Details |
|---|
| 30 SolarWorld Sunmodule Plus SW 255 panels, Half at 45 degrees and half at 27 degrees. Each with a Solaredge P400 Optimizer. The inverter is also a Solaredge Inverter, model SE-7600A-US-U. |
| Annual renewable energy generated | 9,987 kWh |
|---|---|
| Annual Renewable Energy Generated Data Type | Modeled, Measured |
| Power Rating | Renewable Energy System Type(s) | Source of Annual Production Data |
|---|---|---|
| 8,350Watts | Photovoltaics | CEC Production Data Summary. |
Storage and Installed Capacity
| Energy Storage type |
NA |
|---|---|
| Energy Storage Capacity |
Annual Energy Import/Export
| Electricity amount (imported from grid) | 8,287 kWh/year |
|---|---|
| Net electricity usage (purchased electricity) | 1,262 kWh/year |
| Electricity amount (credited or exported to grid) | 7,025 kWh/year |
| Natural gas amount (purchased energy) | 671 kWh/year |