Less Energy and Darker Skies Through Street Lights

Size: px

Start display at page:

Download "Less Energy and Darker Skies Through Street Lights"

Gillian Thornton
6 years ago
Views:

1 Less Energy and Darker Skies Through Street Lights April 13, 2017

2 Background City Staff are investigating options to buy back existing street lights owned by PGE and convert all existing high pressure sodium (HPS) street lights to more energy efficient LED street lights with remote asset management and dimming control.

3 Definitions PGE defines their street lights by Options A, B, and C PGE Street Light Option Ownership Maintenance Quantity Percent LED Option A PGE PGE % Option B City of Hillsboro PGE % Option C City of Hillsboro City of Hillsboro %

4 Why Buy Back the Option A s City staff have identified the following barriers associated with PGE ownership of the Option A street lights The City cannot control the PGE response time to lights that are out or knocked down. City staff cannot implement street light dimming (outlined in upcoming slides) to reduce energy consumption on Option A lights

5 Why Convert to LED The City has a number of street lights it owns (Options B and C) that are currently HPS. Converting the LED would provide the following benefits: Reduced energy consumption Reduced maintenance requirements Improved dark skies compliance

6 Reduced Energy Consumption Converting the street lights from HPS to LED will significantly reduce energy consumption. The City will save at least $300,000 per year on reduced energy usage from the LED conversion The City will further reduce energy usage through street light dimming the amount is not yet defined

7 Reduced Maintenance Requirements The LED Street lights will require significantly less maintenance than HPS street lights LED street lights have a 20 year (or longer) life span. The existing HPS lights are aged and require significant maintenance to keep operational The asset management nodes the City proposes to add with the LED conversion would streamline maintenance alerts and work flow

8 Improved Dark Skies Compliance Dark Skies compliance is defined by the following parameters Light color temperature

9 Improved Dark Skies Compliance Dark Skies compliance is defined by the following parameters Back light (2) Uplight (0) Glare (2)

10 Improved Dark Skies Compliance To support the City s commitment to Dark Skies, the City has updated the following within our Design and Construction Standards: Adopted March 3, 2017 Specified light fixtures, color temperature, and BUG Established over light maximum Established peak conditions to allow for dimming

11 Improved Dark Skies Compliance

12 Improved Dark Skies Compliance

13 Improved Dark Skies Compliance

14 Asset Management As part of the scope of the project, the City would seek to add asset management nodes to all street lights. These nodes would do the following: Allow remote connection to each fixture to monitor performance Provide alerts to City staff when failures/breakage occurs Track energy consumption

15 Asset Management The City has selected Echelon as our control nodes for the following reasons: The system is open protocol (ISO and and BACnet), which means other smart cities applications can communicate with it The system can communicate to both wireless and in line power control nodes The system can interface with crosswalk beacons and school zone flashing beacons

16 Asset Management The asset management nodes would also allow staff to implement street light dimming. Dimming provides the following benefits: Reduce initial over light in design (trimming) Lower light levels during non peak conditions (volume based) Reduced energy consumption

17 Asset Management The City is partnering with PGE on a Pilot Project to evaluate asset management nodes as an alternative metering option: The nodes can be purchased with a 1% or 0.5% accuracy meter This allows the City to track usage by individual fixture as lights are dimmed through programing The existing tariff only recognizes ground meters, but the cost to maintain and service them is prohibitive

18 Okay So What Now? The City is implementing the dark skies, fixture, and control node requirements on all new street light installations The City is developing dimming policies (where, when, and how) The City has contracted with McKinstry, an Energy Savings Contractor (ESCO), to assist with the analysis and possible conversion process The City is exploring funding options for the project, including bonding, borrowing from our own internal funds, etc.

19 Why and ESCO (vs Design/Bid/Build)? Benefits associated with using an ESCO: Guaranteed construction cost Guaranteed energy savings One consultant project manager for design, purchasing, construction, and commissioning

20 ESCO Myths But won t the ESCO own your lights? Right, but you are paying way more aren t you? But you have to pick the lower bidder don t you?

21 How Would it Work? The City is looking to split the conversion into three stages: Audit/Project Development Plan Quantify existing inventory, project energy savings, and cost to construct Phase 1: Construction Convert Option B and C HPS lights to LED Add asset management nodes to all Option B and C lights Phase 2: Construction Purchase Option A lights from PGE Add asset management nodes to all Option A lights

22 Audit The Audit took about three months to complete The City created custom fields for them to populate This data is used to develop construction costs, energy savings projections, and reconcile with PGE billing

23 Audit

24 Phase 1: Construction Phase 1 would include the conversion of all HPS lights to LED, and addition of asset management nodes to all Option B and C lights. Construction could start as early as July 2017 (pending funding) Construction would take a total of 12 months The physical conversion of the fixtures would take approximately six months. The remaining time in the schedule is spent ordering equipment and commission the asset management nodes

25 Phase 1: Construction The figure below shows the proposed construction phasing.

26 Phase 2: Construction Phase 2 will include purchase of the Option A street lights from PGE and commissioning of the asset management nodes. Purchase of the lights is a month process The sale must be approved by the Public Utility Commission (PUC) Once the lights are owned by the City, it will take a few months to install and commission the asset management nodes.

27 Costs PGE Option LED Conversion + Asset Management Nodes PGE Purchase Price Total Option A $349,000 $2,000,000 $2,349,000 Option B $6,600,034 $6,600,034 Option C $157,000 $157,000 TOTAL $9,106,034

28 Next Steps In the next few months, the City will be narrowing down funding sources If funding is secured, construction for Phase 1 would begin as early as July.

29 QUESTIONS?

Deploying High Efficiency Outdoor Lighting: Regional Streetlight Procurement Program (RSLPP)

Deploying High Efficiency Outdoor Lighting: Regional Streetlight Procurement Program (RSLPP) Michael Fuller President, Keystone Lighting Solutions RSLPP Technical Advisor and Owner s Agent August 21 st,