About Us
About Us
Mercury Governor Group (MGG) is a Small Business headquartered in York, Pennsylvania, with a regional office in Washington State. Comprised of two Senior Partners and a group of team members that focus on their specific industry (electrical and hydraulic). MGG specializes in governor systems, hydraulic power units, digital governor training classes and technical consulting services. We offer on-site troubleshooting, calibration, overhaul, training and/or testing services for all types of mechanical and digital governors.
About Us

75+
Years of
experience
WHO WE ARE
Core Competencies:
- MGG has over 75 years’ collected experience in hydro governors.
- MGG has an in-depth understanding of governor performance requirements for Islanded, Isolated and Grid-Connected operation.
- The Principal of MGG have been involved in the design, sale, execution, and commissioning of over 150 digital governor projects.
- The Principal of MGG is an active participant in the IEEE HydroCommittee and has presented numerous technical papers at domestic and international hydro conferences.
- MGG has over 25 years’ experience with Hydraulic Power Units. MGG supports all Governor OEM types (Woodward, Pelton, Voith, American Governor, L&S Electric, Emerson, and General Electric).
Areas of Expertise:
- Governor Technical Support
- Governor Troubleshooting
- Governor Training Classes
- Governor Consulting Services
- Specification Writing
- MOD 27 Testing Support
- Legacy Digital Governor Support (American Governor, L&S Electric)
- Legacy Mechanical Governor Support (Woodward, Pelton)
- Legacy Governor Oil Pumps and Unloader Systems (Woodward, Pelton)
- Hydraulic Power Units and Feedback Sensors
- Standardized hydraulic valve manifolds (Woodward, Pelton)
- Standardized pump unloader kits (Woodward, Pelton).
Our Way of Doing Business
- Prompt, Responsive Service by knowledgeable Governor Experts
- Down-to-Earth Pricing and uncomplicated contractual negotiations
- Listen to the Customer first, then respond to their expressed needs
- Never Oversell: focus on the simplest, most economical approach
- Strive always to not only meet, but surpass Customer expectations
- Going Above and Beyond: that’s the Mercury Governor Way
75+
Years of
experience
WHO WE ARE
Mercury Governor Group (MGG) is a Small Business headquartered in York, Pennsylvania, with a regional office in Washington State. Comprised of two Senior Partners and a group of contracted team members, MGG specializes in digital hydrogovernor systems and hydraulic power units and offers basic and advanced digital governor training classes and a variety of technical consulting services. We offer on-site troubleshooting, calibration, overhaul, training and/or testing services for all types of mechanical and digital governors.
Core Competencies:
- MGG has over 75 years’ collected experience in hydro governors.
- MGG has an in-depth understanding of governor performance requirements for Islanded, Isolated and Grid-Connected operation.
- The Principal of MGG have been involved in the design, sale, execution, and commissioning of over 150 digital governor projects.
- The Principal of MGG is an active participant in the IEEE HydroCommittee and has presented numerous technical papers at domestic and international hydro conferences.
- MGG has over 20 years’ experience with Hydraulic Power Units. MGG supports all Governor OEM types (Woodward, Pelton, Voith, American Governor, L&S Electric, Emerson, and General Electric).
Areas of Expertise:
- Governor Telephone Technical Support
- Governor Troubleshooting,
- Testing and Reprogramming
- Governor Training Classes
- Governor Consulting Services
- Fleet Analysis
- Specification Writing
- Governor Responsiveness Testing
- Analysis and Re-tuning
- Legacy Digital Governor Support (American Governor, L&S Electric, et al)
- Legacy Mechanical Governor Support (Woodward, Pelton, et al)
- Legacy Governor Oil Pumps and Unloader Systems (Woodward, Pelton)
- Digital Governors
- Hydraulic Power Units and Feedback Sensors
- Governor Support and Maintenance Plans (annual or multi-year)
- Standardized digital governor retrofit systems
- Standardized hydraulic valve manifolds (Woodward, Pelton)
- Standardized pump unloader kits (Woodward, Pelton).
Our Way of Doing Business
- Prompt, Responsive Service by knowledgeable Governor Experts
- Down-to-Earth Pricing and uncomplicated contractual negotiations
- Listen to the Customer first, then respond to their expressed needs
- Never Oversell: focus on the simplest, most economical approach
- Strive always to not only meet, but surpass Customer expectations
- Going Above and Beyond: that’s the Mercury Governor Way
75+
Years of
experience
75+
Years of
experience
WHO WE ARE
Mercury Governor Group (MGG) is a Small Business headquartered in York, Pennsylvania, with a regional office in Washington State. Comprised of two Senior Partners and a group of contracted team members, MGG specializes in digital hydrogovernor systems and hydraulic power units and offers basic and advanced digital governor training classes and a variety of technical consulting services. We offer on-site troubleshooting, calibration, overhaul, training and/or testing services for all types of mechanical and digital governors.
Core Competencies:
- MGG has over 75 years’ collected experience in hydro governors.
- MGG has an in-depth understanding of governor performance requirements for Islanded, Isolated and Grid-Connected operation.
- The Principal of MGG have been involved in the design, sale, execution, and commissioning of over 150 digital governor projects.
- The Principal of MGG is an active participant in the IEEE HydroCommittee and has presented numerous technical papers at domestic and international hydro conferences.
- MGG has over 20 years’ experience with Hydraulic Power Units. MGG supports all Governor OEM types (Woodward, Pelton, Voith, American Governor, L&S Electric, Emerson, and General Electric).
Areas of Expertise:
- Governor Telephone Technical Support
- Governor Troubleshooting,
- Testing and Reprogramming
- Governor Training Classes
- Governor Consulting Services
- Fleet Analysis
- Specification Writing
- Governor Responsiveness Testing
- Analysis and Re-tuning
- Legacy Digital Governor Support (American Governor, L&S Electric, et al)
- Legacy Mechanical Governor Support (Woodward, Pelton, et al)
- Legacy Governor Oil Pumps and Unloader Systems (Woodward, Pelton)
- Digital Governors
- Hydraulic Power Units and Feedback Sensors
- Governor Support and Maintenance Plans (annual or multi-year)
- Standardized digital governor retrofit systems
- Standardized hydraulic valve manifolds (Woodward, Pelton)
- Standardized pump unloader kits (Woodward, Pelton).
Our Way of Doing Business
- Prompt, Responsive Service by knowledgeable Governor Experts
- Down-to-Earth Pricing and uncomplicated contractual negotiations
- Listen to the Customer first, then respond to their expressed needs
- Never Oversell: focus on the simplest, most economical approach
- Strive always to not only meet, but surpass Customer expectations
- Going Above and Beyond: that’s the Mercury Governor Way
WHO WE ARE
Mercury Governor Group (MGG) is a Small Business headquartered in York, Pennsylvania, with a regional office in Washington State. Comprised of two Senior Partners and a group of contracted team members, MGG specializes in digital hydrogovernor systems and hydraulic power units and offers basic and advanced digital governor training classes and a variety of technical consulting services. We offer on-site troubleshooting, calibration, overhaul, training and/or testing services for all types of mechanical and digital governors.
Core Competencies:
- MGG has over 75 years’ collected experience in hydro governors.
- MGG has an in-depth understanding of governor performance requirements for Islanded, Isolated and Grid-Connected operation.
- The Principal of MGG have been involved in the design, sale, execution, and commissioning of over 150 digital governor projects.
- The Principal of MGG is an active participant in the IEEE HydroCommittee and has presented numerous technical papers at domestic and international hydro conferences.
- MGG has over 20 years’ experience with Hydraulic Power Units. MGG supports all Governor OEM types (Woodward, Pelton, Voith, American Governor, L&S Electric, Emerson, and General Electric).
Areas of Expertise:
- Governor Telephone Technical Support
- Governor Troubleshooting,
- Testing and Reprogramming
- Governor Training Classes
- Governor Consulting Services
- Fleet Analysis
- Specification Writing
- Governor Responsiveness Testing
- Analysis and Re-tuning
- Legacy Digital Governor Support (American Governor, L&S Electric, et al)
- Legacy Mechanical Governor Support (Woodward, Pelton, et al)
- Legacy Governor Oil Pumps and Unloader Systems (Woodward, Pelton)
- Digital Governors
- Hydraulic Power Units and Feedback Sensors
- Governor Support and Maintenance Plans (annual or multi-year)
- Standardized digital governor retrofit systems
- Standardized hydraulic valve manifolds (Woodward, Pelton)
- Standardized pump unloader kits (Woodward, Pelton).
Our Way of Doing Business
- Prompt, Responsive Service by knowledgeable Governor Experts
- Down-to-Earth Pricing and uncomplicated contractual negotiations
- Listen to the Customer first, then respond to their expressed needs
- Never Oversell: focus on the simplest, most economical approach
- Strive always to not only meet, but surpass Customer expectations
- Going Above and Beyond: that’s the Mercury Governor Way
Certifications & qualifications
Our proposed governor systems will comply fully with the following US and International standards:
ASME PTC-29 “Speed Governing Systems for Hydraulic Turbine Generators"
IEEE 125-2007
“IEEE Recommended Practice for Preparation of Equipment Specifications for Speed Governing of Hydraulic Turbines Intended to Drive Electric Generators”
NERC requirements for governor responsiveness applicable to the MISO region
ISNetworld Approved

Highwire Approved

NERC requirements for governor responsiveness applicable to the MISO region
Certifications & qualifications
Expertise
Our proposed governor systems will comply fully with the following US and International standards:
IEEE 125-2007
“IEEE Recommended Practice for Preparation of Equipment Specifications for Speed Governing of Hydraulic Turbines Intended to Drive Electric Generators”
ASME PTC-29 “Speed Governing Systems for Hydraulic Turbine Generators"
NERC requirements for governor responsiveness applicable to the MISO region
NERC requirements for governor responsiveness applicable to the MISO region
ISNetworld Approved
ISNetworld Approved

ISNetworld Approved

ISNetworld Approved
Highwire Approved
Certifications & qualifications
Expertise
Our proposed governor systems will comply fully with the following US and International standards:
IEEE 125-2007
“IEEE Recommended Practice for Preparation of Equipment Specifications for Speed Governing of Hydraulic Turbines Intended to Drive Electric Generators”
ASME PTC-29 “Speed Governing Systems for Hydraulic Turbine Generators"
NERC requirements for governor responsiveness applicable to the MISO region

