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Welcome to the official website for the town of Princeton, Massachusetts

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Princeton Municipal Light Department
Contact Information:
Contact TypeContact Information
General Manager
General Foreman
Office Manager
Assistant Office Manager
Princeton Municipal Light Dept.
168 Worcester Rd. P.O. Box 247
Princeton, MA 01541
978 464-2815
978 464-5377
Alternate Phone:
978 464-2825
General email
Office Hours are Mondays through Thursdays 8 AM to 5 PM. Fridays 8 AM to NOON.

PMLD is CLOSED for the following 2019 Holidays - Jan 1st, Jan 21st, Feb 18th, Apr 15th, May 27th,
Jul 4th, Sep 2nd, Oct 14th, Nov 28th, Nov 29th,
Dec 25th

For Power Outages DURING regular business hours please contact the PMLD office at 978-464-2815. For Power Outages AFTER office hours please call 978-464-2928. The Regional Dispatch in Holden MA will contact our 24/7 On-Call Line Crew to respond.

For Power Outages lasting more than 2 hours a CODERED notification will be delivered to residents. Please sign up to receive CODERED notifications.
Princeton Municipal Light Building
Princeton Municipal Light Building
Link to PageLink to Page
Additional Links:
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Board of Light Commissioners
Jim Whitman -
Chris Conway -
Richard Rys -
The  Board of Light Commissioners
Next Meeting will be held on
Wednesday, April 10, 2019 at 6:00 PM
at the PMLD office

The Board of Light Commissioners typically meet once a Month on the 2nd
Wednesday at the PMLD Office (168 Worcester Rd, Princeton MA)

2019 Planned Meeting Dates (which are subject to change):
MAY 8th, JUN 12th, JUL 10th, AUG 14th,
SEP 11th, OCT 9th, NOV 13th, DEC 11th

All meeting notices and agendas will be properly posted 48 hours prior,
as required by the Commonwealth of Massachusetts General Laws

If you would like to meet with the Board to discuss an issue/topic please contact the General Manager



The Princeton Municipal Light Department (PMLD) has been providing electrical service
to residents and businesses in Princeton for over 100 years (est. 1912).

THE MISSION of the PMLD is to provide a safe, reliable, and economical source of
electric power for our customers, to acknowledge and implement the need for renewable
energy from within the diversity of available energy sources, and to enhance the benefits
of municipal utility ownership for our customers.  PMLD has its own elected Board of
Commissioners, General Manager, and staff that operate separate and autonomously
from the Board of Selectmen,Town Administrator, and other Town Boards & Committees.

Princeton Municipal Light Department Board of Commissioners



January 2019
For the 3rd year in a row, PMLD Commissioners have voted to maintain the current electric rates.
Currently PMLD rates are LOWER than rates charged by Unitil, National Grid and Eversource.  This is possible due
to the strict management of cost control, monthly review of expenses, the long-term contract with our energy supplier,
and five-year strategic planning by the Board of Light Commissioners, General Manager and Staff. PMLD's current rate
includes a charge of $0.05/kwh to pay for the wind farm debt, maintenance and operation expenses.  The wind farm
debt is expected to retire in the 1st quarter of 2027.  Today's base energy rate ($0.1975/kwh for residential) is just slightly
higher than the 2008 energy rate 10 years ago of $0.1923/kwh before the wind farm debt was incurred.  Princeton residents
can be reassured that the Department is committed in keeping the energy rates affordable while still focused on
maximizing our efforts to consume and generate green renewable energy sources.  Residents are encouraged
to participate in a greener environment by taking advantage of the HELPS energy audit and various rebates towards
the purchase of more energy efficient appliances, heating and cooling systems for their homes.  
Click on the links listed above for more information.   HELPS is the same type of energy efficient program as MASSAVE
but is sponsored by the Massachusetts Municipal Wholesale Electric Company for non-profit Municipal Light Plants.


February 2018
Check out the new MVP PILOT PROGRAM sponsored by the DOER
Offering a Residential Contractor Incentive Program to Help
Massachusetts Residents Reduce their Home Energy Use, Energy Bills,
and Greenhouse Gas Emissions while Improving Home Comfort and Performance
The Program Runs through October 2019
For More Information go to 

Homes with up to Four Units are Eligible to Participate

In Conjunction with this Program Residents can still take advantage of a Free Home Energy Audit
and Apply for all the HELPS Rebates and Incentive Programs that are Available through PMLD






Princeton Municipal Light Department (PMLD) in cooperation with Massachusetts Municipal Wholesale Electric Corporation
(MMWEC) formed the Massachusetts Municipal Light Department Wind Energy Cooperative Corporation (MMLDWECC)
which owned the turbines. The Massachusetts Municipal Light Department Wind Energy Cooperative Corporation owned and
operated the two Fuhrlaender 1500 kW wind turbines located in Princeton until March 2015. In March 2015, the ownership
of the turbines was transferred to the PMLD.

The Fuhrlaender 1500 kW turbines are based on the design of American Superconductor (AMSC) located in Woerthersee,
Austria. There are approximately 6 of these units in the United States.

Project History:
Planning & Permitting 2003-2008 Construction 2009
Commercial operation commenced January 2010.
Gearbox failure in south turbine August 2011 due to manufacturing defect has been replaced June 2012. Both turbines are
now operating smoothly. Please refer to production charts for production history.

Wind generation production is sold to:
Sterling Municipal Light Department under 10 year PPA (8.333% total output and capacity)
West Boylston Municipal Light Plant under 10 year PPA (16.666% total output and capacity)
Remaining 75.001% is sold on the Real Time Market through MMWEC

All operations and maintenance are by the PMLD department staff. In association with AMSC the PMLD operates and maintains
the SCADA system software. 24/7 monitoring and technical support is also supplied through contract with AMSC. A contract is
also in place for additional gear box monitoring through Bachmann Electronic Corporation.

The Wind Farm Debt Obligation was refinanced through MMWEC Pool Financing into a Long Term Bond to be paid off in 2026.


Each Tower height is 215 feet or 65 meters above ground level.

Each Tower was delivered and installed in three pieces.

The Tower sections were manufactured in Minnesota.

The maximum height of turbine structure with blade straight up is approximately 360 feet or 108.6 meters above
ground level (AGL).

The Wind Farm Site is approximately 1,450’ above sea level.

Length of each blade is approximately 125 feet or 37.5 meters and each blade weighs 6 tons.

The Blades were manufactured in South Dakota.

The turbine speed is 17-20 rpm’s.

The maximum blade tip speed is approximately 204 mph.

The Power Output of each turbine is 1,500 kilowatts (kW).

The Generator on top of each tower weights approximately 60 tons.

The Annual Energy Output of the two turbines is approximately 4,000,000 kWh’s.

Both turbines generate the equivalent annual energy consumption of 330 homes.

The wind turbine manufacturer is Fuhrlaender from Germany.

The purchase and installation cost for the two turbines was approximately $7,300,000.

The minimum wind speed to start producing energy is 7 MPH or 3 meters per second.

The maximum wind to produced rated power output is 27 MPH or 12 meters per second.

The Cutout wind speed or wind speed too great for a turbine is 45 MPH or 20 meters per second.

The Survival wind speed is 133 MPH or 59.5 meters per second.

The expected lifespan of the wind turbine is 20-25 years.

When the town experiences a power outage, the turbines will not operate to prevent back-feeding into the electrical distribution
system as the lineworker’s work to restore power.

The wind turbines use an anemometer and wind vane to sense wind speed and direction.  This data tells the wind turbines
what direction to point towards and when to start or stop.

The blades act just like airplane blades and are lifted by the wind to turn the generator shaft.  

The pitch of each blade is controlled to optimize energy production at various wind speeds.

The electricity generator feeds the electrical grid and generally feeds the customer load or demand for energy in the area it is connected to.

You cannot physically send the electricity generated from our turbines to someone else.  That is handled by financial contracts.


Want to be 'in the know' about electrical power outages??

*** PMLD will send out a CODERED Notification to Residents for
Townwide Power Outages Lasting for More than 2 Hours *****

Register online through CodeRed to receive phone calls, text messages and/or emails

Click here to register

PMLD has provided Electricity to the
Town of Princeton MA for over 100 Years
(Est. 1912)


Town of Princeton, 6 Town Hall Drive, Princeton, MA 01541