Breakthrough hydropower technology doesn't require dam or reservoir

By IndustryWeek


NFPA 70e Training

Our customized live online or in‑person group training can be delivered to your staff at your location.

  • Live Online
  • 6 hours Instructor-led
  • Group Training Available
Regular Price:
$199
Coupon Price:
$149
Reserve Your Seat Today
California-based research and development company Bourne Energy has developed a novel hydropower technology that does not require a dam or reservoir to produce power.

The RiverStar river power system is a 20-foot long self-contained energy module composed of a stabilizer, energy absorber, energy transmission and mooring system and energy conversion and control system designed to be sited in-river in long arrays. The concept behind the RiverStar is to harvest hydropower along the entire length of a river instead of harnessing energy in one massive site using a dam and reservoir.

The system can be applied to each river's environment, culture and commercial activities as seamlessly and invisibly as possible thus opening up vast untapped amounts of hydropower worldwide. RiverStar does not stop or slow natural processes such as fish migration, sedimentation and biological processes, nor does it  prevent other commercial and/or private river traffic.

Bourne plans to build a series of prototypes leading to full-scale demonstrators to promote its utility scale hydropower power systems worldwide.

Hydropower is currently the world's major renewable energy, producing 24% of global electricity. It is also the least expensive energy, having an average cost of 2-5 cents/kWh. But only 4% of the world's gross hydropower potential has as of yet been developed.

Related News

Duke Energy installing high-tech meters for customers

Duke Energy Smart Meters enable remote meter reading, daily energy usage data, and two-way outage detection via AMI, with encrypted data, faster restoration, and remote connect/disconnect for Indiana customers in Howard County.

 

Key Points

Advanced meters that support remote readings, daily usage insights, two-way outage detection, and secure, encrypted data.

✅ Daily energy usage available online the next day

✅ Two-way communications speed outage detection and restoration

✅ Remote connect/disconnect; manual reads optional with opt-out fee

 

Say goodbye to your neighborhood meter reader. Say hello to your new smart meter.

Over the next three months, Duke Energy will install nearly 43,000 new high-tech electric meters for Howard County customers that will allow the utility company to remotely access meters via the digital grid instead of sending out employees to a homeowner's property for walk-by readings.

That means there's no need to estimate bills when meters can't be easily accessed, such as during severe weather or winter storms.

Other counties serviced by Duke Energy slated to receive the meters include Miami, Tipton, Cass and Carroll counties.

Angeline Protogere, Duke Energy's lead communication consultant, said besides saving the company money and manpower, the new smart meters come with a host of benefits for customers enabled by smart grid solutions today.

The meters are capable of capturing daily energy usage data, which is available online the next day. Having this information available on a daily basis can help customers make smarter energy decisions and support customer analytics that avoid billing surprises at the end of the month, she said.

"The real advantage is for the consumer, because they can track their energy usage and adjust their usage before the bills come," Protogere said.

When it comes to power outages, the meters are capable of two-way communications. That allows the company to know more about an outage through synchrophasor monitoring, which can help speed up restoration. However, customers will still need to notify Duke Energy if their power goes out.

If a customer is moving, they don't have to wait for a Duke Energy representative to come to the premises to connect or disconnect the energy service because requests can be performed remotely.

Protogere said when it comes to installing the meters, the changeover takes less than 5 minutes to complete. Customers should receive advance notices from the company, but the technician also will knock on the door to let the customer know they are there.

If no one is available and the meter is safely accessible, the technician will go ahead and change out the meter, Protogere said. There will be a momentary outage between the time the old meter is removed and the new meter is installed.

Kokomo and the surrounding areas are one of the last parts of the state to receive Duke Energy's new, high-tech meters, which are commonly used by other utility companies and in smart city initiatives across the U.S.

Protogere said statewide, the company started installing smart meters in August 2016 as utilities deploy digital transformer stations to modernize the grid. To date, they have installed 694,000 of the 854,000 they have planned for the state.

The company says the information stored and transmitted on the smart meters is safe, protected and confidential. Duke Energy said on its website that it does not share data with anyone without customers' authorization. The information coming from the meters is encrypted and protected from the moment it is collected until the moment it is purged, the company said.

Digital smart meter technology uses radio frequency bands that have been used for many years in devices such as baby monitors and medical monitors. The radio signals are far below the levels emitted by common household appliances and electronics, including cellphones and microwave ovens.

According to the World Health Organization, FCC, U.S. Food and Drug Administration and Electric Power Research Institute, no adverse health effects have been shown to occur from the radio frequency signals produced by smart meters or other such wireless networks.

However, customers can still opt-out of getting a smart meter and continue to have their meter manually read.

Those who choose not to get a smart meter must pay a $75 initial opt-out fee and an additional $17.50 monthly meter reading charge per account.

If smart meters have not yet been installed, Duke Energy will waive the $75 initial opt-out fee if customers notify the company they want to opt out within 21 days of receiving the installation postcard notice.

 

Related News

View more

New Program Set to Fight for 'Electricity Future That Works for People and the Planet'

Energy Justice Program drives a renewables-based transition, challenging utility monopolies with legal action, promoting rooftop solar, distributed energy, public power, and climate justice to decarbonize the grid and protect communities and wildlife nationwide.

 

Key Points

A climate justice initiative advancing renewables, legal action, and public power to challenge utility monopolies.

✅ Challenges utility barriers to rooftop solar and distributed energy

✅ Advances state and federal policies for equitable, public power

✅ Uses litigation to curb fossil fuel dependence and protect communities

 

The Center for Biological Diversity on Monday rolled out a new program to push back against the nation's community- and wildlife-harming energy system that the climate advocacy group says is based on fossil fuels and a "centralized monopoly on power."

The goal of the new effort, the Energy Justice Program, is to help forge a path towards a just and renewables-based energy future informed by equitable regulation principles.

"Our broken energy system threatens our climate and our future," said Jean Su, the Energy Justice Program's new director, in a statement. "Utilities were given monopolies to ensure public access to electricity, but these dinosaur corporations are now hurting the public interest by blocking the clean energy transition, including via coal and nuclear subsidy schemes that profit off the fossil fuel era."

"In this era of climate catastrophe," she continued, "we have to stop these outdated monopolies and usher in a new electricity future that works for people and the planet."

To meet those goals, the new program will pursue a number of avenues, including using legal action to fight utilities' obstruction of clean energy efforts, helping communities advance local solar programs through energy freedom strategies in the South, and crafting energy policies on the state, federal, and international levels in step with commitments from major energy buyers to achieve a 90% carbon-free goal by 2030.

Some of that work is already underway. In June the Center filed a brief with a federal court in a bid to block Arizona power utility Salt River Project from slapping a 60-percent electricity rate hike on rooftop solar customers—amid federal efforts to reshape electricity pricing that critics say are being rushed—a move the group described (pdf) as an obstacle to achieving "the energy transition demanded by climate science."

The Center is among the groups in Energy Justice NC. The diverse coalition seeks to end the energy stranglehold in North Carolina held by Duke Energy, which continues to invest in fossil fuel projects even as it touts clean energy and grid investments in the region.

The time for a new energy system, says the Energy Justice Program, is now, as climate change impacts increasingly strain the grid.

"Amid this climate and extinction emergency," said Su, "the U.S. can't afford to stick with the same centralized, profit-driven electricity system that drove us here in the first place. We have to seize this once-in-a-generation opportunity to design a new system of accountable, equitable, truly public power."

 

Related News

View more

Alberta's Path to Clean Electricity

Alberta Clean Electricity Regulations face federal mandates and provincial autonomy, balancing greenhouse gas cuts, net-zero 2050 goals, and renewable energy adoption across wind, solar, and hydro, while protecting jobs and economic stability in energy communities.

 

Key Points

Rules to cut power emissions, boost renewables, and align Alberta with federal net-zero goals under federal mandates.

✅ Phases out coal and curbs greenhouse gas emissions

✅ Expands wind, solar, and hydro to diversify the grid

✅ Balances provincial autonomy with national climate targets

 

In a recent development, Alberta finds itself at a crossroads between provincial autonomy and federal mandates concerning federal clean electricity regulations that shape long-term planning. The province, known for its significant oil and gas industry, faces increasing pressure to align its energy policies with federal climate goals set by Ottawa.

The federal government, under the leadership of Environment Minister Steven Guilbeault, has proposed regulations aimed at reducing greenhouse gas emissions and transitioning towards a cleaner energy future that prioritizes clean grids and batteries across provinces. These regulations are part of Canada's broader commitment to combat climate change and achieve net-zero emissions by 2050.

The Federal Perspective

From Ottawa's standpoint, stringent regulations on Alberta's electricity sector are necessary to meet national climate targets. This includes measures to phase out coal-fired power plants and increase reliance on renewable energy sources such as wind, solar, and hydroelectric power. Minister Guilbeault emphasizes the importance of these regulations in mitigating Canada's carbon footprint and fostering sustainable development.

Alberta's Response

In contrast, Alberta has historically championed provincial autonomy in energy policy, leveraging its vast fossil fuel resources to drive economic growth. The province remains cautious about federal interventions that could potentially disrupt its energy sector, a cornerstone of its economy, especially amid changes to how electricity is produced and paid for now under discussion.

Premier Jason Kenney has expressed concerns over federal overreach, and his influence over electricity policy has shaped proposals in the legislature. He emphasizes the province's efforts in adopting cleaner technologies while balancing economic stability and environmental sustainability.

The Balancing Act

The challenge lies in finding a middle ground between federal imperatives and provincial priorities, as interprovincial disputes like B.C.'s export-restriction challenge complicate coordination. Alberta acknowledges the need to diversify its energy portfolio and reduce emissions but insists on preserving its jurisdiction over energy policy. The province has already made strides in renewable energy development, including investing in wind and solar projects alongside traditional energy sources.

Economic Implications

For Alberta, the transition to cleaner electricity carries significant economic implications as the electricity market heads for a reshuffle in the coming years. It entails navigating the complexities of energy transition, ensuring job retention, and fostering innovation in sustainable technologies. Critics argue that abrupt federal regulations could exacerbate economic hardships, particularly in communities reliant on the fossil fuel industry.

Moving Forward

As discussions continue between Alberta and Ottawa, finding common ground, including consideration of recent market change proposals from the province, remains essential. Collaborative efforts are necessary to develop tailored solutions that accommodate both environmental responsibilities and economic realities. This includes exploring incentives for renewable energy investment, supporting energy sector workers in transitioning to new industries, and leveraging Alberta's expertise in energy innovation.

Conclusion

Alberta's journey towards clean electricity regulation exemplifies the delicate balance between regional autonomy and federal oversight in Canada's complex federal system. While tensions persist between provincial and federal priorities, both levels of government share a common commitment to addressing climate change and advancing sustainable energy solutions.

The outcome of these negotiations will not only shape Alberta's energy landscape but also influence Canada's overall progress towards a greener future. Finding equitable solutions that respect provincial autonomy while achieving national environmental goals remains paramount in navigating this evolving policy landscape.

 

Related News

View more

Power Demand Seen Holding Firm In Europe’s Latest Lockdown

European Power Demand During Second Lockdowns remains resilient as winter heating offsets commercial losses; electricity consumption tracks seasonal norms, with weather sensitivity, industrial activity, natural gas shielding, and coal decline shaping dynamics under COVID-19 restrictions.

 

Key Points

It is expected to remain near seasonal norms, driven by heating, industry activity, and weather sensitive consumption.

✅ Winter heating offsets retail and hospitality closures

✅ Demand sensitivity rises with colder weather in France

✅ Gas generation shielded; coal likely to curtail first

 

European power demand is likely to hold up in the second round of national lockdown restrictions, with fluctuations most likely driven by changes in the weather.

Traders and analysts expect normal consumption this time around as home heating during the chilly season replaces commercial demand.

Last week electricity consumption in France, Germany and the U.K. was close to business-as-usual levels for the time of year, according to BloombergNEF data. By contrast, power demand had dropped 16% in the first seven days of the springtime lockdown, as reflected by the U.K.’s 10% daily decline reported then.

How power demand performs has significance outside the sector. It’s often seen as a proxy for economic growth and during lockdowns earlier this year, electricity use slumped along with GDP, and stunted hydro and nuclear output could further hobble recovery. For Western Europe, annual demand is expected to be 5% lower than the previous year, a bigger decline than after the global financial crisis in 2008, according to S&P Global Platts.

The Covid-19 limits are lighter than those from earlier in the year “with an explicit drive to preserve economic activity, particularly at the more energy-intensive industrial end of the spectrum,” said Glenn Rickson, head of European power analysis at S&P Global Platts.

Higher levels of working from home will offset some of the losses from shop and hospitality closures, “but also increase the temperature sensitivity of overall gas and power demand, as heat-driven demand records have shown in recent summers,” he said.

The latest wave of national lockdowns began in France, Germany, Spain, Italy and Britain, with Spain having seen April demand plummet earlier in the year, as coronavirus cases surged and officials struggled to keep the spread of the virus under control.

Much of the manufacturing industry remains working for now despite additional restrictions to contain the coronavirus. With the peak of the second wave yet to be reached, “it seems almost inevitable that the fourth quarter will prove economically challenging,” analysts at Alfa Energy said.

There will initially be significantly less of an impact on demand compared with this spring when global daily demand dipped about 15% and electricity consumption in Europe was down 30%, Johan Sigvardsson, power price analyst at Swedish utility Bixia AB said.

The prevalence of electric heating systems in France means that power demand is particularly sensitive to cold weather. A cold spell would significantly boost demand and drive record electricity prices in tight markets.

Similar to the last round of shutdowns, it’s use of coal that will probably be hit first if power demand sags, as transition-focused responses gather pace, leaving natural gas mostly shielded from fluctuations in the market.

“We expect that another drop in power demand would again impact coal-fired generation and shield gas power to some extent,” said Carlos Torres Diaz, an analyst at Rystad Energy.

 

Related News

View more

Told "no" 37 times, this Indigenous-owned company brought electricity to James Bay anyway

Five Nations Energy Transmission Line connects remote First Nations to the Ontario power grid, delivering clean, reliable electricity to Western James Bay through Indigenous-owned transmission infrastructure, replacing diesel generators and enabling sustainable community growth.

 

Key Points

An Indigenous-owned grid link providing reliable power to Western James Bay First Nations, replacing polluting diesel.

✅ Built by five First Nations; fully Indigenous-owned utility

✅ 270 km line connecting remote James Bay communities

✅ Ended diesel dependence; enabled sustainable development

 

For the Indigenous communities along northern Ontario’s James Bay — the ones that have lived on and taken care of the lands as long as anyone can remember — the new millenium marked the start of a diesel-less future, even as Ontario’s electricity outlook raised concerns about getting dirtier in policy debates. 

While the southern part of the province took Ontario’s power grid for granted, despite lessons from Europe’s power crisis about reliability, the vast majority of these communities had never been plugged in. Their only source of power was a handful of very loud diesel-powered generators. Because of that, daily life in the Attawapiskat, Kashechewan and Fort Albany First Nations involved deliberating a series of tradeoffs. Could you listen to the radio while toasting a piece of bread? How many Christmas lights could you connect before nothing else was usable? Was there enough power to open a new school? 

The communities wanted a safe, reliable, clean alternative, with Manitoba’s clean energy illustrating regional potential, too. So did their chiefs, which is why they passed a resolution in 1996 to connect the area to Ontario’s grid, not just for basic necessities but to facilitate growth and development, and improve their communities’ quality of life. 

The idea was unthinkable at the time — scorned and dismissed by those who held the keys to Ontario’s (electrical) power, much like independent power projects can be in other jurisdictions. Even some in the community didn’t fully understand it. When the idea was first proposed at a gathering of Nishnawbe Aski Nation, which represents 49 First Nations, one attendee said the only way he could picture the connection was as “a little extension cord running through the bush from Moosonee.” 

But the leadership of Attawapiskat, Kashechewan and Fort Albany First Nations had been dreaming and planning. In 1997, along with members of Taykwa Tagamou and Moose Cree First Nations, they created the first, and thus far only, fully Indigenous-owned energy company in Canada: Five Nations Energy Inc., as partnerships like an OPG First Nation hydro project would later show in action, too. 

Over the next five years, the organization built Omushkego Ishkotayo, the Cree name for the Western James Bay transmission line: “Omushkego” refers to the Swampy Cree people, and “Ishkotayo” to hydroelectric power, while other regions were commissioning new BC generating stations in parallel. The 270-kilometre-long transmission line is in one of the most isolated regions of Ontario, one that can only be accessed by plane, except for a few months in winter when ice roads are strong enough to drive on. The project went online in 2001, bringing reliable power to over 7,000 people who were previously underserved by the province’s energy providers. It also, somewhat controversially, enabled Ontario’s first diamond mine in Attawapiskat territory.

The future the First Nations created 25 years ago is blissfully quiet, now that the diesel generators are shut off. “When the power went on, you could hear the birds,” Patrick Chilton, the CEO of Five Nations Energy, said with a smile. “Our communities were glowing.”

Power, politics and money: Five Nations Energy needed government, banks and builders on board
Chilton took over in 2013 after the former CEO, his brother Ed, passed away. “This was all his idea,” Chilton told The Narwhal in a conversation over Zoom from his office in Timmins, Ont. The company’s story has never been told before in full, he said, because he felt “vulnerable” to the forces that fought against Omushkego Ishkotayo or didn’t understand it, a dynamic underscored by Canada’s looming power problem reporting in recent years. 

The success of Five Nations Energy is a tale of unwavering determination and imagination, Chilton said, and it started with his older brother. “Ed was the first person who believed a transmission line was possible,” he said.

In a Timmins Daily Press death notice published July 2, 2013, Ed Chilton is described as having “a quiet but profound impact on the establishment of agreements and enterprises benefitting First Nations peoples and their lands.” Chilton doesn’t describe him that way, exactly. 

“If you knew my brother, he was very stubborn,” he said. A certified engineering technologist, Ed was a visionary whose whole life was defined by the transmission line. He was the first to approach the chiefs with the idea, the first to reach out to energy companies and government officials and the one who persuaded thousands of people in remote, underserved communities that it was possible to bring power to their region.

After that 1996 meeting of Nishnawbe Aski Nation, there came a four-year-long effort to convince the rest of Ontario, and the country, the project was possible and financially viable. The chiefs of the five First Nations took their idea to the halls of power: Queen’s Park, Parliament Hill and the provincial power distributor Hydro One (then Ontario Hydro). 

“All of them said no,” Chilton said. “They saw it as near to impossible — the idea that you could build a transmission line in the ‘swamp,’ as they called it.” The Five Nations Energy team kept a document at the time tracking how many times they heard no; it topped out at 37. 

One of the worst times was in 1998, at a meeting on the 19th floor of the Ontario Hydro building in the heart of downtown Toronto. There, despite all their preparation and planning, a senior member of the Ontario Hydro team told Chilton, Martin and other chiefs “you’ll build that line over my dead body,” Chilton recalled. 

At the time, Chilton said, Ontario Hydro was refusing to cooperate: unwilling to let go of its monopoly over transmission lines, but also saying it was unable to connect new houses in the First Nations to diesel generators it said were at maximum capacity. (Ontario Hydro no longer exists; Hydro One declined to comment.)

“There’s always naysayers no matter what you’re doing,” Martin said. “What we were doing had never been done before. So of course people were telling us how we had never managed something of this size or a budget of this size.” 

“[Our people] basically told them to blow it up your ass. We can do it,” Chilton said.

So the chiefs of the five nations did something they’d never done before: they went to all of the big banks and many, many charitable foundations trying to get the money, a big ask for a project of this scale, in this location. Without outside support, their pitch was that they’d build it themselves.

This was the hardest part of the process, said Lawrence Martin, the former Grand Chief of Mushkegowuk Tribal Council and a member of the Five Nations Energy board. “We didn’t know how to finance something like this, to get loans,” he told The Narwhal. “That was the toughest task for all of us to achieve.”

Eventually, they got nearly $50 million in funding from a series of financial organizations including the Bank of Montreal, Pacific and Western Capital, the Northern Ontario Heritage Fund Corporation (an Ontario government agency) and the engineering and construction company SNC Lavalin, which did an assessment of the area and deemed the project viable. 

And in 1999, Ed Chilton, other members of the Chilton family and the chiefs were able to secure an agreement with Ontario Hydro that would allow them to buy electricity from the province and sell it to their communities. 

 

Related News

View more

Top Senate Democrat calls for permanent renewable energy, storage, EV tax credits

Clean Energy Tax Incentives could expand under Democratic proposals, including ITC, PTC, and EV tax credits, boosting renewable energy, energy storage, and grid modernization within a broader infrastructure package influenced by Green New Deal goals.

 

Key Points

Federal incentives like ITC, PTC, and EV credits that cut costs and speed renewables, storage, and grid upgrades.

✅ Proposes permanence for ITC, PTC, and EV tax credits

✅ Could accelerate solar, wind, storage, and grid upgrades

✅ Passage depends on bipartisan infrastructure compromise

 

The 115th U.S. Congress has not even adjourned for the winter, and already a newly resurgent Democratic Party is making demands that reflect its majority status in the U.S. House come January.

Climate appears to be near the top of the list. Last Thursday, Senator Chuck Schumer (D-NY), the Democratic Leader in the Senate, sent a letter to President Trump demanding that any infrastructure package taken up in 2019 include “policies and funding to transition to a clean energy economy and mitigate the risks that the United States is already facing due to climate change.”

And in a list of policies that Schumer says should be included, the top item is “permanent tax incentives for domestic production of clean electricity and storage, energy efficient homes and commercial buildings, electric vehicles, and modernizing the electric grid.”

In concrete terms, this could mean an extension of the Investment Tax Credit (ITC) for solar and energy storage, the Production Tax Credit (PTC) for wind and the federal electric vehicle (EV) tax credit program as well.

 

Pressure from the Left

This strong statement on climate change, clean energy and infrastructure investment comes as at least 30 incoming members of the U.S. House of Representatives have signed onto a call for the creation of a committee to explore a “Green New Deal” and to move the nation to 100% renewable energy by 2030.*

It also comes as Schumer has come under fire by activists for rumors that he plans to replace Senator Maria Cantwell (D-Washington) with coal state Democrat Joe Manchin (D-West Virginia) as the top Democrat on the Senate Energy and Natural Resources Committee.

As such, one possible way to read these moves is that centrist leaders like Schumer are responding to pressure from an energized and newly elected Left wing of the Democratic Party. It is notable that Schumer’s program includes many of the aims of the Green New Deal, while avoiding any explicit use of that phrase.

 

Implications of a potential ITC extension

The details of levels and timelines are important here, particularly for the ITC.

The ITC was set to expire at the end of 2016, but was extended in legislative horse-trading at the end of 2015 to a schedule where it remains at 30% through the end of 2019 and then steps down for the next three years, and disappears entirely for residential projects. Since that extension the IRS has issued guidance around the use of co-located energy storage, as well as setting a standard under which PV projects can claim the ITC for the year that they begin construction.

This language around construction means that projects can start work in 2019, complete in 2023 and still claim the 30% ITC, and this may be why we at pv magazine USA are seeing an unprecedented boom in project pipelines across the United States.

Of course, if the ITC were to become permanent some of those projects would be pushed out to later years. But as we saw in 2016, despite an extension of the ITC many projects were still completed before the deadline, leading to the largest volume of PV installed in the United States in any one year to date.

This means that if the ITC were extended by the end of 2020, we could see the same thing all over again – a boom in projects created by the expected sunset, and then after a slight lull a continuation of growth.

Or it is possible that a combination of raw economics, increased investor and utility interest, and accelerating renewable energy mandates will cause solar growth rates to continue every year, and that any changes in the ITC will only be a bump against a larger trend.

While the basis for expiration of the EV tax credit is the number of vehicles sold, not any year, both the battery storage and EV industries, which many see at an inflection point, could see similar effects if the ITC and EV tax credits are made permanent.

 

Will consensus be reached?

It is also unclear that any such infrastructure package will be taken up by Republicans, or that both parties will be able to come to a compromise on this issue. While the U.S. Congress passed an infrastructure bill in 2017, given the sharp and growing differences between the two parties, and divergent trade approaches such as the 100% tariff on Chinese-made EVs, it is not clear that they will be able to come to a meaningful compromise during the next two years.

 

Related News

View more

Sign Up for Electricity Forum’s Newsletter

Stay informed with our FREE Newsletter — get the latest news, breakthrough technologies, and expert insights, delivered straight to your inbox.

Electricity Today T&D Magazine Subscribe for FREE

Stay informed with the latest T&D policies and technologies.
  • Timely insights from industry experts
  • Practical solutions T&D engineers
  • Free access to every issue

Live Online & In-person Group Training

Advantages To Instructor-Led Training – Instructor-Led Course, Customized Training, Multiple Locations, Economical, CEU Credits, Course Discounts.

Request For Quotation

Whether you would prefer Live Online or In-Person instruction, our electrical training courses can be tailored to meet your company's specific requirements and delivered to your employees in one location or at various locations.