We are a management, engineering, and development consulting company that is owned by its employees.

We create, plan, build, run, and maintain the water and power networks, ports, airports, and roads and railroads that support our everyday existence.

We have technical experts who can help with any of your needs. We use innovation, excellence, and our strong foundation in core markets to solve today’s problems and prepare you for tomorrow.

BUILDINGS

We support projects in both the public and private sectors, working across a wide range of building types: arts and culture, aviation and ports, commercial, retail and office spaces, education, healthcare, government (local and central), residential, hotels, sports and event venues, and transportation.

 

ENERGY

We work on energy markets and their varied transition speeds. We’ll leverage our extensive energy sector expertise to co-create and deliver solutions with you.

 

DESIGN AND EGINEERING

We can: 

  • Carry out optioneering and feasibility studies to reveal the potential of sites and identify possible risks and pitfalls.
  • Help you explore synergies between energy generation, energy storage, and industrial activity to create energy hubs with wide economic and community benefits.  
  • Design energy generation, transmission and fuel infrastructure, at every stage from outline concept to detailed design, with input from multidisciplinary engineering teams.
  • Use standardization and automated digital tools to optimize the design of your assets, promoting efficiency and ease of construction, and minimising environmental impacts.
  • Provide assurance and design management to give you peace of mind in developing.

PROJECT, PROGRAM AND SUPPLY CHAIN MANAGEMENT 

We can:

  • Manage your project or program from start to finish, driving delivery against time and budget.
  • Estimate and manage costs and risks and implement robust project controls to keep your project on track.
  • Draw up a robust logistics and supply chain strategy to secure scarce resources and expertise and to minimize project cost and risk.
  • Use a common data environment to share documents and data with project partners and stakeholders, building trust and collaboration.
  • Manage procurement, administer contracts and supervise construction for an efficient supply chain, with appropriate risk allocation and incentives. 

COMMISSIONING AND TRHOUGH LIFE MANAGEMENT

We can: 

  • Hand over a functioning digital model of your assets that will help you manage ongoing operation and maintenance. 
  • Develop asset management strategies and plans that enable you to better manage risk and prioritize investment.
  • Apply our technical expertise to maintenance, repair, adaptation, and enhancement work that extends the life and improves the performance of your assets.
  • Plan and model decommissioning and advise on land remediation and residual monitoring to protect the environment and people’s health.

HELPING YOUR ENGINEERING BUSINESS NEEDS BEST WAY POSSIBLE TO MEET THE ENERGY, ENGINEERING WITH PROFESSIONAL ADVANCED DIGITAL TECHNICAL SOLUTIONS.

 

We’re working to deliver the energy transition across the globe. Among our recent projects are:

  • White Pine pumped storage project, Nevada, USA
    The 1000MW White Pine pumped hydro storage project under development in Ely, Nevada, will provide 8000MWh of energy storage to generate up to eight hours of electricity. We’ve provided feasibility engineering and assessments, licensing support and other specialist services to shape the project.
     
  • Baron Winds I, New York, USA
    We provided detailed design and engineering to RWE for this 122MW wind farm in Steuben County, New York; our scope included the design of the 34.5kV electrical collection system, the 230kV substation and the underground transmission line to the point of interconnection.
  • Wataynikaneyap transmission project, Canada.
     
    We’re lenders’ advisor for this project to bring reliable and environmentally sound energy to remote First Nations communities in northern Ontario, Canada, which will involve transmission and distribution infrastructure spanning 1,700km (1,056 miles).
     
  • Pattullo Gas Line Replacement, British Columbia, Canada
    When the replacement of the Pattullo Bridge required a natural gas pipeline to be rerouted, we provided expertise in project management, design, surveying, geotechnical investigations and utility engineering that enabled the project to be completed two months ahead of schedule.
  • SMR-160+ nuclear reactors, UK
    We are delivering engineering, environmental and regulatory support to Holtec Britain for the SMR-160+ small modular reactor, looking at potential deployment in the UK. We have helped our client engage with Great British Nuclear (GBN) and will continue to guide them through the complexities of the UK’s goal setting regulatory environment and energy landscape, with the aim of fleet deployment in the UK in the future.
  • Kitakyushu Hibikinada offshore wind project, Japan
    We provided technical due diligence, including risk assessment, for the largest privately financed offshore wind energy project in Japan, giving investors and project developers confidence in the plans and preparing the way for delivery.
  • Kidston renewable energy hub, Queensland, Australia
    We carried out detailed designs for this program to transform the former gold mining settlement of Kidston into a renewable energy hub with a 250MW pumped-storage plant at its core.
  • Skavica hydroelectric dam, Albania
    Working alongside Bechtel on behalf of the Albanian Power Corporation, we carried out optioneering and front-end engineering design for the 162m-high Skavica hydroelectric dam, which will be one of the highest concrete gravity dams in the world and will become the controlling dam to an existing three-plant cascade system.
  • Catskill-Delaware Interconnection
        Connecting two aqueducts to preserve the quality of New York City water 

Together, the Catskill and Delaware Aqueducts deliver more than a billion  gallons (3.8 billion liters) per day of drinking water to New York City from six reservoirs located in the Catskill Mountains. Constructed from 1907 to 1916, the Catskill Aqueduct runs 92 miles (148 kilometers) from the Ashokan Reservoir in Ulster County to the Hillview Reservoir in Yonkers. An at-grade, gravity-flow conduit, it crosses 1,100 feet (335 meters) below the bed of the Hudson River at Storm King Mountain. In 1909, Harper’s Monthly said, “The project ranks as the greatest municipal water-supply enterprise ever undertaken, and as an engineering work is probably second only to the Panama Canal.” It carries about 40% of New York City’s water supply.

  • Hydropower provides Nevada with 1 GW of on-demand electricity
The 1GW White Pine pumped-hydro storage project is under development in White Pine County, Nevada. Infrastructure includes two reservoirs on the Duck Creek Range and Steptoe Valley, underground tunnels, shafts and caverns, and a new 25 mile (40km), 345kv transmission line. The underground powerhouse will contain three variable-speed pump turbines and the project will provide network frequency regulation, generating and pumping operating flexibility, and rapid response to power fluctuations.

Following a pre-feasibility study, we were appointed Owner’s engineer to deliver a detailed feasibility study that includes scrutinising the already developed concepts, collecting additional data, evaluating technical viability, and advancing the engineering of the project. We are also supporting rPlus to secure a licence for the project from the Federal Energy Regulatory Commission (FERC).

Pending engineering and environmental approvals and the completion of the FERC licensing process, construction is expected to begin in 2025. Construction will take between five and seven years. White Pine PHS will provide 8000MWh of energy storage to generate up to eight hours of electricity and provide direct employment and secondary jobs to improve the White Pine County economy, helping Nevada meet its goals for a carbon-free energy future.

Solution

Reesha Tech was retained as part of a joint venture team to perform the geotechnical investigations and the structural, architectural, and landscape designs for Catskill-Delaware Interconnection. We also provided program management services for the overall joint venture contract, and technical reviews of the entire interconnection design.

The Interconnection includes a major underground structure, designed as an expansion of the existing Delaware Aqueduct Shaft 4. The new structure features large-diameter piping, flow metering, and pressure-reducing valves.

The Interconnection can transfer up to 365 million gallons (1,382 million liters) of water per day from the Delaware Aqueduct, reducing its pressure from as much as 100 pounds per square inch to open-channel flow conditions.

Building Information Modeling (BIM) and physical scale models were used to optimize the hydraulic design of the Interconnection. Our design allowed for construction with minimal outages for the existing aqueducts.

Outcome

The Catskill-Delaware Interconnection will allow the NYCDEP to reduce the use of Catskill water supplies during periods of high turbidity. This will reduce the need for chemical water treatment while maintaining high-quality water without filtration.

In May 2013, Department of Environmental Protection Commissioner Carter Strickland said, “Ensuring the delivery of more than 1 billion gallons of high-quality water to more than 9 million New Yorkers every day requires long-term planning, and the interconnect at Shaft 4 is an important project for the future of New York City’s water supply system.

“By connecting the Delaware Aqueduct to the Catskill Aqueduct, DEP will have another mechanism to help it deliver the highest quality drinking water from across its supply system.”

As part of planned testing, the NYCDEP decided to temporarily shut down and partially dewater the Delaware Aqueduct for three weeks, starting in October 2023. The aqueduct would be shut down again from October 2024 until the spring of 2025 to repair leaks.

PROJECT: LINKING UP SILICON VALLEY

The San Francisco Bay Area is one of the most populous regions of the US, home to 7.7 million people. From 1940 to 1970, the population surged from 1.7 million to 3.6 million, leading several Bay Area counties to join in the 1960s to form the Bay Area Rapid Transit (BART) system.

BART is now the fifth-busiest heavy rail rapid transit system in the US, with 130 miles (210 km) of track serving an average of 118 million passenger journeys each year. 

Santa Clara County originally chose not to join the transit system. This gap in the rail network around the Bay forces many commuters to travel by car.

Two projects for the Santa Clara Valley Transportation Authority (VTA) are closing the gap and transforming transportation for millions of workers at the heart of the US tech industry.

The BART Silicon Valley Extension will give more choice to travelers. It is expected to accelerate a 20-year-long rise in the number of trips made by public transportation. Together, Phases I and II will provide access to transit for 1.7 million residents of Santa Clara County, with capacity for 54,600 passengers per day, helping relieve heavy congestion on two north-south commuter highway routes

It’s more than a transit project — BART Silicon Valley is an entire program of improvements that will transform Silicon Valley.

We managed Phase I in joint venture with Bechtel. On Phase II, we led the preliminary design and continue with advanced design in a joint venture with San Francisco-based PGH Wong Engineering.

“It’s more than a transit project — BART Silicon Valley is an entire program of improvements that will transform Silicon Valley,” says Michael Lehnen, our BART project manager.

A two-phase extension

Phase I extended the BART service 10 miles (16 km) from Alameda County into Santa Clara County, with stops at Milpitas and Berryessa/North San José. The project broke ground in 2012 and opened for passenger service on June 13, 2020.

Michael explains that the project has brought wider benefits including transit-oriented communities, multimodal transportation connectivity, plus roadway, utility, and environmental improvements.

Phase II

  • 6 miles     of line
  • 5-mile       tunnel
  • 3               underground stations

Phase II will add an extra 6 miles (10 km) to the route. Of this, 5 miles (8 km) of the alignment will consist of a large single-bore tunnel. It will include three new underground stations in San José and terminate at an aboveground station in Santa Clara, with connections to Caltrain Commuter Rail, Amtrak, VTA’s light rail, and the future California High-Speed Rail route.

At an estimated cost of $9.3 billion, Phase II is the largest transportation project in the history of Santa Clara County. Construction began in spring 2024 and is estimated to be completed by 2036.

Station innovations

Underground transit systems in urban environments are traditionally built using twin-bore running tunnels (train guideways), with cut-and-cover methods used for the stations.

However, the new stations for BART Silicon Valley Phase II are in some of the busiest parts of San José. Cut-and-cover construction would mean months of disruption in the bustling commercial center, as sites are cleared for excavation, roads are closed, utilities are relocated, and traffic is diverted.

San José is a key commercial center, home to globally important companies including Adobe and Google, which plans to add almost 800,000 square yards (700,000 square meters) of office space and 4,000 new housing units. Popular hockey and football teams also bring large crowds to downtown San José and Santa Clara, which in turn brings revenue to local restaurants and hotels.

The challenge was to come up with the best alternative to cut-and-cover construction that would have caused major disruption.

“Our work includes a tunnel 5 miles (8 km) long, to be constructed by a tunnel boring machine (TBM). There will be 1 mile (1.6 km) of street-level track, three underground stations, an aboveground station and a train yard, and a maintenance facility near the end of the extension,” says Michael.4

Underground options

Over the course of almost 20 years, designs for three tunnel configurations had been developed to varying degrees of completion:

  • Cut-and-cover stations and twin-bore tunnels
  • 43-foot (13-meter) diameter single-bore tunnel with stacking station platforms and tracks arranged side by side
  • 50-foot (15.2-meter) diameter single-bore tunnel with parallel tracks and station platforms on the middle island

Stations can be constructed without causing aboveground cut-and-cover disruptions in the public right-of-way thanks to the single-bore technology.

But only once, on Barcelona Line 9 in Spain, has a single-bore tunnel been used for both guideways and at underground stations. With less than 750 people every train, that is a rather tiny transit system. With larger trains that can accommodate over 2,000 passengers, this proposal is for heavy rail.

“We started in 2019 by looking at the concept designs to ensure VTA that a single-bore tunnel was feasible,” Michael explains our role. From the standpoint of pure tunneling, the 43-foot (13.1-meter) option would have been less expensive to construct than the larger bore option; but, complexity was introduced by the internal arrangement change from side-by-side guideways to stacked stations.

  • 48 feet     wide
  • 5 miles     long

For the tunnel and trackwork portions of the BART Silicon Valley Phase II project, Kiewit Shea Traylor, a collaborative effort between Kiewit Infrastructure West, JF Shea Construction, and Traylor Brothers, is a forward-thinking design-build contractor.

In order to make the tunnel the third largest bored tunnel in the world, Kiewit Shea Traylor suggested a larger 48-foot (14.6-meter) tunnel with side-by-side track configuration across the tunnel and stations.

The likelihood that the project will be completed on time and within budget is increased by the bigger diameter, which also lowers hazards and standardizes tunnel building methods.

The right engineering solutions

A variety of skills have been needed to transform the large-diameter tunnel concept into an effective engineering solution. This comprises the following:

  • The creation of a geotechnical baseline report, which includes a thorough description of the ground conditions used as a point of reference for the tunnel’s detailed design, procurement, and the formulation of the contractors’ construction plan, is part of the geotechnical investigation and reporting process. The site mostly comprises of soft ground with a high water table, according to geotechnical analysis. It will be necessary to specify the tunnel boring machine to handle these circumstances.
  • Multidisciplinary building information modeling (BIM) was used in the initial design of the large-diameter single-bore tunnel to determine the internal diameter, precast concrete lining, adit (horizontal passages) arrangement, tunnel portals, and internal components. The range of motion of the trains as well as the space needs for utilities, roadside amenities, access and emergency egress, ventilation and smoke extraction, and power supply have all been taken into account in the preliminary design.
  • The four stations’ initial designs include mining adits and deep shafts to link the tunnel and station headhouses. The main construction works at the Downtown San José and Diridon stations will take place off the street, minimizing inconvenience to businesses and the general public while enabling traffic to continue.
  • Development of tracks and systems, including initial design of crossings and direct fixation trackwork.
  • analysis and design of the ventilation system based on the special station designs and the large-diameter single-bore tunnel. According to computational fluid dynamics (CFD) analysis, the system will be able to successfully manage fire and smoke design requirements, protecting passengers and assisting rescue personnel. We studied passenger egress using our proprietary STEPS program in conjunction with CFD to show that our design satisfies or surpasses emergency evacuation regulations.
  • Development of a digital delivery system. In addition to using the newest technology for effective production and communication between our team, our client VTA, the forward-thinking design-build contractor, and 40 subconsultants, the digital delivery system conforms with ISO 19650, the international standard for digital delivery. During preliminary engineering, BIM improved interdisciplinary coordination; this will continue into advanced design. The VTA will receive the project’s unified digital model as an asset management tool for the extension’s ongoing upkeep and operation.

Early to mid-2030s is when BART Silicon Valley Phase II is anticipated to open. Through mixed-use development along the route, community links to thousands of employment across the bay, and cleaner air due to less traffic, the expansion will boost the local economy.

 

Our Vision

REESHA TECH is the lead solution provider for large scale industrial CONSTRUCTION PROJECTS in sectors and areas of energy, utilities, oil and gas, power transmission, automation, water and energy management solutions and systems.

Maximising the benefits of artificial intelligence for infrastructure calls for strong governance to minimize the risks

Our Mission

The Group commits to setting an example and encouraging others to follow suit. REESHA Tech aims to become the go-to worldwide supplier of IT solutions and energy engineering solutions for large-scale projects for utilities, oil and gas, power transmission, automation, water, and energy management solutions, and systems.

Our Values

Customer Focus

We pledge to deliver value-added goods and services to our customers and to generate substantial returns on investments for our shareholders; we also work to surpass their expectations and maintain constant communication with them through approachable, truthful, and transparent means.

People Focus 

Our employees are our most valuable asset; we understand their needs and professional aspirations, and we do everything in our power to give them the training and opportunities they need to reach their goals and, in turn, support our mission through their excellent performance and refined service. Our organization also places a high priority on the health and safety of our employees, and we pledge to continuously raise their standards.

Quality, HEALTH & SAFETY

REESHA TECH MAINTAINS high standards for HSE (Health, safety and environment), OHS (operational, health and safety), OHSAS, SAFETY, RISK ASSESSMENT.

Our commitment is to provide our clients with high-quality services and products that meet their demands while maintaining World-Class performance throughout all of our business endeavors.This is based on the highest standards of environmental concern, unwavering ethics, and customer service.Our quality control procedures guarantee that we always do this correctly the first time.Actively handle labor PPE, PERMITS (SFT, LAP, PTW), QHSE, PPE (personal protective equipment), equipment calibration, OHSAS, and NEBOSH license personnel for precise and current worker, site, area, and plant network safety.

Sustainability

Integrating sustainable practices into all aspects of its operations is the goal of REESHA TECH.Our dedication to protecting the environment is primarily realized through our involvement in a sector of the economy whose goal is to supply the world’s water needs while preserving its resources.As part of our People Focus, we also want to invest in and develop human resources to enable the communities we work with have a steady supply of skilled workers.