Funding Energy Efficiency and Recovery through Grants and ......• Design Build Energy Services...

Funding Energy Efficiency and

Recovery through Grants and Savings

Agenda

•  What is LOTT Clean Water Alliance? •  The catalyst for the cogen and blower projects •  The Energy Savings Performance Contract

(ESPC) program and process •  The project details •  End results

•  State of WA Finance options

Mission Statement

Preserve and protect public health and the

environment by cleaning and restoring

water resources for our communities

Sewered Residential Population 103,309 Sewered Employee Population 92,498

LOTT Alliance

•  The LOTT Alliance is a non-profit corporation formed by the Cities of Lacey, Olympia, and Tumwater, and Thurston County

•  LOTT provides wastewater treatment and reclaimed water production services for approximately 90,000 people.

•  LOTT owns and operates facilities in all four

partner jurisdictions

The Catalyst

•  LOTT desired a Design Build process to have more control of the project and with a guaranteed outcome

•  Politics of gas flare-environmental responsibility

•  Oversized system ran inefficiently

•  Improved digester circulation in 2010 which improved gas production

•  Maximize available incentive and grant dollars

Laying the foundation of partnership

•  Wanted a design build process where they had better control over the project

•  Equipment Selection in LOTT’s control (335 kW generator)

•  Request for proposal (RFP) for a WA State approved Energy Services Company (ESCO) for a cogen project

•  LOTT found a partner with TRANE in developing the right project to fulfill their needs

•  This meant including HDR as a critical team member •  WA State Department of General Administration Energy

Performance Contract

Trane’s Role •  Design Build Energy Services Contractor •  LOTT was integrated throughout the process and

encouraged to shape the project through equipment selection, contractors, design and solutions.

•  LOTT selected Trane because we partnered with them to make it their project.

•  Providing Guaranteed Maximum Cost and Guaranteed Minimum Savings

ESPC Process

A Washington State Department of General Administration Energy Performance Contract was used to procure services associated with the design and installation of the two projects.

•  LOTT only has one contract which is with the WA State General Admistration for the entire project(s).

•  This is an option that provides a method for organizations

to manage and optimize their energy use, utilizing a performance contract allows them to leverage energy use and operational savings to support strategic business objectives.

ESPC Process

•  Preliminary Audit •  IGA – Investment Grade Audit •  Final proposal •  Implementation/construction •  Monitoring and Verification (M & V) (3 Year Guarantee) •  Successful completion

The Project

Before collaborating with Trane, LOTT’s Budd Inlet Treatment Plant flared most of its methane gas, a by-product of the wastewater treatment process, into the atmosphere.

This loss of energy was costly AND

harmful to the environment.

Projects

•  Cogeneration System •  Blower retrofit

Cogen Project Goals •  Achieve the best overall utilization of the

available digester gas •  Address existing system needs •  Eliminate flaring of unused digester gas •  Reduce LOTT’s pollutants and emissions •  Maximize available energy conservation

incentives from Puget Sound Energy

Cogen Project Goals

•  Coordinate design and development proactively with regulatory agencies

•  Support LEED certification of new Regional Services Center building

•  Complete project in time to support the new Regional Services Center building

Overall Cogen Project Results

•  Provides sufficient heating energy to serve the site as a “district” heating plant

•  Eliminates need to flare excess digester gas

•  Achieves savings of nearly $228,000 per year in electricity costs

•  The combined projects save more than 2.8 million kilowatt-hours (kWh) per year, enough to power more than 210 Thurston County homes.

•  Funded with assistance from PSE energy conservation incentives totaling 70% of the project cost

Demoli/on of Former H2S Scrubbers







Demoli/on of Old Methane Boiler

Demoli/on of Old Blowers

Installa/on of New H2S Scrubbers


INSTALLATION OF NEW H2S SCRUBBERS Installa/on of

New H2S Scrubbers










Installation of New Gas

Conditioning Unit

Installa/on of New Siloxane Scrubbers

Installation of New Gas Conditioning

Unit


Conditioning Unit

Installation of New Gas Conditioning Unit

Installation of New Gas Conditioning Unit


Conditioning Unit

Installation of New Gas Conditioning

Unit

Installation of New Heat

Recovery Unit


Recovery Unit


Recovery Unit

Installation of Chiller Unit



Metso Control Unit

Auxiliary Natural Gas

Boilers


Boilers


Boilers

Electrical Breaker Box

Path to Substation

Path to Substation

Path to Substation

Path to Substation

Path to Substation

Installation of Engine Generator










Project

Phase 2 Blower Retrofit

•  Replaced 20 year old 500hp Roots blower with a dual core 200hp Neuros Turbo Blower with VFD

•  How is it working?

•  HDR helped with design installation and warranty issues

Project July, 2011: 72.2% used in cogen, 5% reused in boiler, 22.8% flared. 221,405 kWh, $15,941.00 – 29 days Aug, 2011: 39% used in cogen, 26.6% reused in boiler, 34.4% flared. 113,843 kWh, $8,200.00 – 17 days Sept, 2011: 70% used in cogen, 11% reused in boiler, 19% flared. 186,176 kWh, $13,404.70 – 24 days Oct, 2011: 81% used in cogen, 0% reused in boiler, 19% flared. 316,138 kWh, $22,762.00 – 31 days Nov, 2011: 81% used in cogen, 0% reused in boiler, 19% flared. 238,027 kWh, $17,137.94 – 30 days Dec, 2011: 68% used in cogen, 0% reused in boiler, 32% flared. 225,721 kWh, $16,251.91 – 31 days Jan, 2012: 74% used in cogen, 0% reused in boiler, 26% flared. 225,054 kWh, $16,204.00 – 31 days Feb, 2012: 63% used in cogen, 0% reused in boiler, 37% flared. 201,939 kWh, $14,539.00 – 25 days Mar, 2012: 70% used in cogen, 3% reused in boiler, 27% flared. 225,054 kWh, $16,204.00 – 29 days April, 2012: 70% used in cogen, 18% reused in boiler, 12% flared. 225,054 kWh, $16,204.00 – 30 days May, 2012: 83% used in cogen, 3% reused in boiler, 14% flared. 243,454 kWh, $17,285.00 – 29 days June, 2012: 92% used in cogen, 4% reused in boiler, 4% flared. 237,754 kWh, $16,881.00 – 29 days July, 2012: 71.5% used in cogen, 3.2% reused in boiler, 25.3% flared. 189,136 kWh, $13,429.00 – 27 days Aug, 2012: 72% used in cogen, 3% reused in boiler, 25% flared. 134,395 kWh, $9,542.00 – 27

Results of the two phased project

•  Two phases •  Cogeneration System •  Blower retrofit

•  Total Project value $3,200,000 •  Utility (PSE) rebates of $2,000,000

(combined) •  Annual guaranteed savings $230,000/year

Funding Options

•  Department of Commerce Energy Efficiency

Grants for Local Governments •  Energy/water efficiency loan through the Public

Works Trust Fund •  Utility incentives (this project)

•  Self funded through operational & energy savings

Questions?

Date post:	14-Apr-2020
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Funding Energy Efficiency and Recovery through Grants and ......• Design Build Energy Services...

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