Hydrostor Terra TM. Advanced Compressed Air Energy Storage

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1 Hydrostor Terra TM Advanced Compressed Air Energy Storage

2 Hydrostatic pressure naturally created by water at depth makes Hydrostor Terra TM one of the cleanest, most economical bulk energy storage solutions available today. Hydrostor Terra TM is true bulk energy storage that addresses the issues of renewable intermittency, grid load balancing, reserve capacity, peak shaving and T&D congestion. Hydrostor s Advanced Compressed Air Energy Storage (A-CAES) technology leverages a purposebuilt, in-ground cavern for emissions-free bulk energy storage. With proven components from Tier 1 OEM manufacturers, our clients have confidence that the Hydrostor system will perform reliably for the life of the equipment, with support from a global service network. We use proven construction techniques that minimize risk and environmental disturbance, as well as a superior thermal management system that maximizes our efficiency. Hydrostor and have partnered to jointly develop, market and construct A-CAES systems globally. How A-CAES works Hydrostor s A-CAES converts electricity to compressed air, which is stored in an underground air accumulator until needed for generation. The heat generated when compressing the air is captured and stored for use during generation, known as Adiabatic CAES. This adiabatic operation increases the system s efficiency and eliminates the need for additional heat from fossil fuels (and the associated costs and emissions). To satisfy the need for electricity, the system reverses the air flow, allowing hydrostatic pressure to force the air out of the Terra TM and back to the surface where the stored heat is added back into the air stream. The now-heated air travels through a turbo expander that drives a generator, which efficiently converts the energy stored in the air back into electricity for the consumer. Applications Flexible peaking plant generation Integrate renewables to on-demand discharge Transmission decongestion Reserve capacity Ancillary services 1

3 Hydrostor Terra TM Shown below, a typical Terra TM site would be located near a local water body. This location allows water to easily flow in-and-out of the Terra TM via piping as the pressurized air is added, stored and released. The water in the Terra TM shaft and cavity holds the air under pressure until ready for generation. CONVERT ELECTRICITY TO COMPRESSED AIR CAPTURE HEAT IN THERMAL STORE STORE COMPRESSED AIR IN ACCUMULATOR CONVERT COMPRESSED AIR TO ELECTRICITY ON DEMAND No temperature impact on water and zero emissions 4. Air compressor turbo expander generator 3. Thermal store 1. Channel from adjacent water source 2. Air pipe Pressurized air Hydrostatic water 1. Water flows to/from the adjacent water source through the flooded shaft 2. Bi-directional air flow to/from Terra TM 3. Thermal management for adiabatic fuel-free expansion 4. Air-to-electricity conversion equipment 2

4 The system offers a small mechanical footprint, with charge and discharge equipment having a compact configuration. Advantages Low cost. Lowest installed cost/kwh available today for bulk energy storage. Utility scale. Up to 100s of MW, 4-hour to multiple-day duration. Green energy on-demand. Environmentally friendly with no hazardous chemicals. Long life. 30+ years without efficiency loss on mechanical and up to 100 years on accumulator. Adiabatic process. Emission-free (no fossil fuel) operation. Maximum flexibility. Charge, discharge, and storage capacity are set independently. Roundtrip AC/AC efficiency. Approximately 60% without efficiency loss over life of the asset. Multiple air storage options. Terra, cavern, marine. Expandable storage. Projects easily modified to accommodate changing grid requirements. Excellent reliability. Mechanical equipment from Tier 1 OEM suppliers matched with engineering expertise. Black start and voltage support. Ancillary benefits provided by synchronous equipment. 3

5 A-CAES provides operational and environmental benefits to cities and generating assets. Applications Replacing fossil fuel peaker plants Fossil-fuel-free peaking and baseload power Large-scale storage, up to 100s of MW with 4-hour to multiple-day duration Repurpose aging fossil-fuel power plants and plants subject to once-through-cooling regulations with a carbon free energy storage asset Replace diesel generation with low-cost renewable energy Urban power plant locations are possible, providing zero-emission load shifting, grid balancing and T&D deferral solutions 24-hour voltage support, emergency power, black start, and power quality conditioning Lower energy costs through elimination of peak power price Capitalize on electricity price volatility On-demand renewable energy generation Combined installation of wind or solar generation with storage to supply 100% green electricity Renewable power on demand Lower cost than diesel/hfo power Replacement of fuel shipments, oil storage and aged contaminated sites Baseload or peaking plant designs Optimizing wind and solar Renewable energy on demand, 24/7 Time-shift generation to maximize project economics Eliminate renewable curtailment Baseload or peaking plant designs Increase distributed renewable generation with single central storage resource Electrical independence for islands, micro-grids and off-grid locations Turnkey installations can support 24-hour energy supply, load levelling or both Transmission and distribution deferral New transmission lines are expensive, have long lead times and are challenging to permit Maximize existing T&D capacity during off-peak times, bringing power outside transmission bottlenecks for system charging Time-shift generation to maximize economics Emission free A-CAES can be installed in dense urban areas where fossil fuel plants are prohibited Provides reliable back-up power for critical areas and infrastructure Ancillary grid services located exactly where needed 4

6 Project experience Toronto Island, Ontario Canada Utility host: Toronto Hydro Power rating: 660 kw, with a phased expansion to multi-mwh energy rating Goderich, Ontario Canada Owner: NRStor Inc., contracted by the IESO Power rating: 1.75 MW Energy rating: 7 MWh Hydrostor continues to develop projects up to 300 MW 5

7 As a global leader within the energy industry, offers integrated services to deliver energy storage projects from concept through planning, construction and delivery. s broad range of project management services, coupled with our technical expertise, allows us to thoroughly plan, develop and execute environmental reviews, permitting, EPC and commissioning for a wide range of projects. To serve our clients, we provide a variety of services required to execute and deliver energy storage projects across the globe. These services include integrated energy solutions that build upon our wide range of solar and wind energy experience. For energy storage, s experience and resources include: Concept assessment Site selection Technology selection Conceptual design and system sizing Grid-interconnect investigation Risk analysis Techno-economic assessment Feasibility studies Social impact assessment Cost estimations Financial modeling Economic benefit assessment Ancillary service benefits Project planning Planning and permitting Environmental impact assessments Stakeholder management plan Resource planning Life cycle analysis Risk and hazard assessments Cost assessment Project management Construction and site management Environmental health, and safety management Commissioning services Project reporting and stakeholder management Contract management EPC Mechanical Electrical Civil SCADA Grid connection and integration Transmission and distribution Water/marine Fire and safety assessment Construction and site management Procurement services O&M schedules Operational efficiency assessments Complete solutions Fully financed turnkey solutions Warranty provided Operations and maintenance services Sizing flexibility to meet varying requirements Single contract option 6

8 About is built to deliver a better world. We design, build, finance and operate infrastructure assets for governments, businesses and organizations in more than 150 countries. As a fully integrated firm, we connect knowledge and experience across our global network of experts to help clients solve their most complex challenges. From highperformance buildings and infrastructure, to resilient communities and environments, to stable and secure nations, our work is transformative, differentiated and vital. A Fortune 500 firm, had revenue of approximately $17.4 billion during fiscal year See how we deliver what others can only imagine at aecom.com For more information: Travis Starns Business Development Manager, Energy Storage travis.starns@aecom.com Request technical information and project pricing at: aecom.com B_HydrostorACAES_JC All Rights Reserved.