Tag: Energy conservation

solar schools study

Hot off the presses, a new report released today by SEIA, The Solar Foundation, and Generation 180 shows vast growth in solar on K-12 schools in the United States. Solar capacity on our country’s schools has nearly doubled since the last version of this report in 2014, with 5,489 K-12 schools now powered by solar, totaling nearly 1,000 megawatts of electric generating capacity.

It’s no secret that many American schools are underfunded and classrooms often lack necessary resources for students to learn. Well, with the cost to install solar plummeting, schools are making the switch and seeing their electricity bills shrink, freeing up funds to use to strengthen what schools are here to do, which is teach our nation’s children.

The cost of a solar school installation pops off the page in this report, dropping 67% in the last decade and 19% last year alone. The result is a boom in installations allowing 4 million students in the United States to receive their education in a school powered by solar.

“There’s a reason solar is spreading so quickly across America’s school districts, and it’s pretty simple — when schools go solar, the entire community benefits,” said Abigail Ross Hopper, SEIA’s president and CEO.

These 5,000+ schools are running with much lower electricity bills, and those savings can go toward higher pay for our nation’s teachers, school supplies, textbooks and other essential resources. An investment in solar on a school is a direct investment in that community. Plus, what could be better than a science and conservation lesson right on the school grounds?

“When schools go solar, the entire community benefits.” – SEIA CEO Abigail Ross Hopper

California schools lead the way in solar adoption with nearly 2,000 schools making the switch. But it’s notable that other states have picked up the pace including New Jersey, Arizona, Massachusetts, and New York. These states are setting an example and laying the groundwork for other states to follow.

When a school goes solar and cuts their energy costs, that puts investment back into what matters most: the students. Learn more about the report here and see if your community’s school has made the smart choice to invest in their community and go solar.

CleanTechnica

Wind and solar energy are the lowest cost options in most of the U.S., and that’ll make it very hard to stop the renewable energy freight train from running over fossil fuels.

Utilities that need to build new power generation facilities or replace old ones are going to have a hard time justifying anything but renewable energy in 2017 and beyond. Investment bank Lazard recently released its 11th analysis of the cost of new electricity generation, titled Lazard’s Levelized Cost Of Energy Analysis–Version 11.0, and showed that wind and solar energy are now cheaper than diesel, nuclear, coal, and in most cases natural gas.

Utilities and regulators are going to be hard-pressed to justify anything but renewable energy generation in the future. From Maine to Hawaii, the U.S.’s energy future is renewable.

Solar farm with wind turbines in the background. IMAGE SOURCE: GETTY IMAGES.

How renewable energy costs stack up today

The table below shows Lazard’s analysis of the cost, on a per kWh basis, to build new power plants with different fuel sources and technologies. You can see that the lowest cost option is wind at 3 cents per kWh, followed by gas combined cycle that’s as cheap as 4.2 cents per kWh, and solar, which costs between 4.3 cents and 5.3 cents per kWh.

Energy source Low-End Estimate High-End Estimate
Crystalline Utility-Scale Solar PV 4.6 cents per kWh 5.3 cents per kWh
Thin-Film Utility-Scale Solar PV 4.3 cents per kWh 4.8 cents per kWh
Wind 3 cents per kWh 6 cents per kWh
Coal 6 cents per kWh 14.3 cents per kWh
Natural Gas Combined Cycle 4.2 cents per kWh 7.8 cents per kWh
Nuclear 12.2 cents per kWh 18.3 cents per kWh
Diesel 19.7 cents per kWh 28.1 cents per kWh
DATA SOURCE: LAZARD’S LEVELIZED COST OF ENERGY ANALYSIS–VERSION 11.0.

What you’ll also notice is that the range of costs is much wider for fossil fuels like natural gas. That’s because construction costs can be different depending on the state, fuel prices, and how often the plant is being used. Renewable energy, on the other hand, gets to cut to the front of the line on the grid, meaning nearly 100% of its electricity production is used, allowing for predictable electricity pricing.

What’s clear is that diesel, nuclear, and coal are all higher cost than both wind and solar energy on a per kWh basis. No matter how you slice it, renewable energy is winning versus fossil fuels on economics.

I’ll also point out that there’s no fuel cost risk for renewable energy. The wind and sun are zero-cost fuel sources, unlike extracted fuels, which could conceivably spike from current levels.

Trends are working against fossil fuels

It wasn’t long ago that Lazard’s analysis wasn’t so favorable to renewable energy. In 2010, version 4.0 of Lazard’s levelized cost of energy study had wind costs at 6.5-11.0 cents per kWh and solar at 13.4-19.4 cents per kWh. Natural gas, coal, and nuclear all beat solar on a cost basis, and in some cases beat wind.

Energy source Low-End Estimate High-End Estimate
Crystalline Utility-Scale Solar PV 13.4 cents per kWh 15.4 cents per kWh
Thin-Film Utility-Scale Solar PV 13.4 cents per kWh 18.8 cents per kWh
Wind 6.5 cents per kWh 11.0 cents per kWh
Coal 6.9 cents per kWh 15.2 cents per kWh
Natural Gas Combined Cycle 6.7 cents per kWh 9.6 cents per kWh
Nuclear 7.7 cents per kWh 11.4 cents per kWh
DATA SOURCE: LAZARD’S LEVELIZED COST OF ENERGY ANALYSIS–VERSION 4.0.

Clearly, the tides have shifted in the energy industry. Fossil fuels is at best flat and in some cases getting more expensive, while renewable energy costs are coming down every year. There’s no indication these trends will reverse course, and investors need to consider whether they’re using renewable energy’s growth as a tailwind for their portfolio or fighting the clear trends in energy. If these charts are any indication, fossil fuels’ days may be numbered.

UN CLIMATE CHANGE PRESS RELEASE / 10 NOV, 2017

THE NEARLY 13,000 comments from expert reviewers worldwide on the Intergovernmental Panel on Climate Change’s (IPCC’s) first draft of the special report on global warming of 1.5°C has put to bed any lingering doubts over its importance.

“The comments were comprehensive and indicate there is significant interest in the report and what it will suggest for a diverse set of stakeholders,” noted Professor Michael Taylor, one of the report’s coordinating lead authors, who was in Sweden last month to work on addressing the comments.

That meeting, he said, provided the various chapter authors the opportunity to look at how to respond to comments “and put us on the path to produce the second draft which is to be submitted by year end”.

According to an October 24 press release published on the IPCC’s website, 2,000 experts from 124 countries registered to be reviewers.

“Overall, the First Order Draft of the Special Report on 1.5 degrees C attracted 12,895 review comments. These comments came from 489 expert reviewers representing 61 different countries,” it said.

“Based on citizenship, half of expert reviewers were from Europe (51 per cent). North America, Central America and the Caribbean accounted for a further 19 per cent; Asia, 13 per cent; South America, seven per cent; South West Pacific, six per cent; and Africa five per cent,” it added.

Women also featured well in those numbers.

“A third (31 per cent) of expert reviewers were female and two-thirds (69 per cent) were male,” the release said.

EXCITING TIMES

For Taylor, it is exciting times.

“There is a general excitement to see how the document is shaping and is being shaped by the expertise of the many scientists who are involved, the expertise of the global community and the comments, and to see where the work is going,” the physicist and head of the Mona Climate Studies Group at the University of the West Indies told The Gleaner.

“We know that climate change is an issue and the question this document is trying to answer is whether 1.5 is a good target. The sum of the scientists’ findings is what does 1.5 mean for the world and what does a higher target mean? And there is a distinction between the 1.5 and a two degrees in many areas, not in every area,” he added.

The report, for many, is vital – and not only given the Paris Agreement which aims to hold “the increase in the global average temperature to well below two degrees Celsius above pre-industrial levels and pursuing efforts to limit the temperature increase to 1.5 degrees Celsius above pre-industrial levels, recognising that this would significantly reduce the risks and impacts of climate change”.

Small-island developing states, such as those of the Caribbean, have consistently held that a world warmed beyond 1.5 could severely impair their survivability, given climate threats, such as sea level rise and extreme weather events, the likes of hurricanes recently experienced.

So … that was fast. US natural gas stakeholders barely had time to congratulate themselves for pushing coal out of the power generation market, and it looks like karma is already getting the last laugh. Low-cost renewable energy is beginning to nudge natural gas aside. In the most recent and striking development, California’s massive 262-megawatt Puente gas power plant proposal has been shelved, perhaps permanently.

Electricity Consumers Push Back On Natural Gas

Reporter Ivan Penn of the LA Times has the scoop on the Puente project, and he teases out several powerful forces at work against natural gas.

One key element is consumer pushback. At first glance, the proposal doesn’t seem overly controversial. The proposed plan, a project of NRG Energy, does not involve constructing a new facility. It would have replaced two existing gas units at the company’s existing Mandalay power generation facility in Oxnard, California.

All things being equal, the proposal would provide at least some degree of environmental benefit, because the new units would use 80% less water for cooling than the existing ones.

However, criticism of the new gas project was intense. Penn sums it up: earlier this month, a two-member review committee of the California Energy Commission took the rare step of issuing a statement recommending that the full Commission reject the plans after receiving “hundreds of messages protesting the project as another potential pollution threat to a community already overwhelmed by electricity-generating plants.”

The Rates Are Too Damn High

Aside from concerns about local air quality, Penn also cites an LA Times investigation indicating that the state’s energy policy has over-estimated the demand for natural gas power plants, resulting in artificially high rates:

“The commissioners’ recommendation followed Los Angeles Times investigations that showed the state has overbuilt the electricity system, primarily with natural gas plants, and has so much clean energy that it has to shut down some plants while paying other states to take the power California can’t use. The overbuilding has added billions of dollars to ratepayers’ bills in recent years.”

According to Penn, NRG officials maintain that older plant retirements by 2021 make replacement imperative to build up now.

At current costs, local ratepayers won’t get much relief if old power units are replaced with wind or solar.

My Beach, My Choice

Land use issues and environmental justice issues also come into play. NRG’s Mandalay power generation facility is located on the beach, and as NRG acknowledges, in 2014 the City of Oxnard enacted a moratorium on coastal development.

That complicates development plans within the power plant site, though NRG emphasizes that the final decision rests with state-level regulators.

Among those objecting to the plant from outside the local community is billionaire investor Tom Steyer, who co-authored an op-ed about the proposed facility raising the environmental justice issue:

“…in our state, not all beaches are created equal. That becomes painfully clear if you drive 50 miles north of Los Angeles to Oxnard, where the beaches have been seized by corporate polluters, marred by industrial waste and devastated by three fossil-fuel power plants that sit along the shoreline.

“Oxnard has more coastal power plants than any other city in the state, and not coincidentally, its population is predominantly Latino and low-income….”

Oxnard residents — and no doubt, real estate developers — are looking forward to transitioning coastal property out of industrial use altogether. Here’s LA Times reporter Dan Weikel on that topic:

“Many residents of this predominantly Latino city with a population of 205,000 say they are fed up with the degradation. Their growing dissatisfaction with the condition of large sections of beach has coalesced into an effort to deindustrialize and restore the shoreline of this city that is framed by Ventura and Camarillo and wraps around the town of Port Hueneme.”

So, What’s The Solution?

The Puente project has been suspended, not canceled. However, chances of revival are slim. Although the most recent study affirms that renewable energy is a more expensive choice currently, Steyer points out that the redevelopment of Oxnard’s beachfront could be balanced out by new economic activity related to tourism and recreation.

That opens up a whole ‘nother can of worms, as waterfront development typically drives up the cost of housing, squeezing former residents to outer rims with longer commutes and fewer resources.

Sticking to the energy cost issue, the basic problem comes down to local energy vs. long distance transmission.

NRG makes the case that local energy generation is more reliable. That’s a fair assessment as a general principle, as the old model of centralized power plants falls out of favor. Local and on-site generation is becoming a consensus argument among energy experts, regardless of the power source.

On the other hand, the risk involved in transmitting electricity from remote wind farms and solar power plants could be offset by local storage sites, where the growing microgrid movement would come into play.

New tools for financing energy efficiency improvements could also help tamp down local energy demand and ease the way for a more interactive grid that enables consumers to tweak their electricity consumption to help prevent outages.

Cities like Oxnard can also tap into a growing renewable energy knowledge base that leverages local opportunities for renewable energy development and energy efficiency improvements.

Most of all, the Trump administration’s willy-nilly approach to oil and gas development — for example, a new proposal involving drilling along the Pacific coast — raises the stakes for citizens far outside of the communities dealing with local land use issues, leading to a groundswell of support for alternatives.

Clean Technica

The Jamaica Public Service Company (JPS), the island’s sole distributor of electricity, said it will be doubling its expenditure on energy projects by December this year in an attempt to drive down the cost of energy.

JPS views the investment as key to driving efficiencies, according to Chairman Seji Kawamura, who was appointed earlier this year, as well as incoming President and CEO Emanuel DaRosa, who takes up that position effective August 1.

The big project entails the construction of its cutting-edge storage facility, which will store energy produced at renewable plants.

“This year, we are spending US$100 million on investments on the purchase of properties and plant and equipment,” stated Kawamura following the JPS’s annual general meeting at its Knutsford Boulevard, New Kingston, head office on Friday.

The JPS spent US$56 million and US$65 million, respectively, on the purchase of property, plant, and equipment in the 2016 and 2015 financial years.

“We are making sure that when the renewables are coming in, that there must be a storage system to accommodate them,” Kawamura said.

In June, the JPS announced plans to build a 24.5-megawatt facility to store energy as a safeguard against power outages. It was described as the first of its kind in the Caribbean.

ACTING LIKE A BATTERY

The light and power supplier plans to build the facility next year, but no cost was disclosed at the time. It will act like a giant battery that charges when solar or wind-energy plants generate energy. It then kicks into action to feed the grid the power these renewable plants generate when there is cloud cover or low wind speeds.

“This represents the confidence of shareholders in the future of the business,” Kawamura said, explaining that renewables would reduce the reliance on oil imports, the cost of which are passed on to customers.

“So we will charge less fuel on the bill to you, so we are not making it more expensive,” he added.

Kawamura and DaRosa lauded the outgoing president and chief executive officer, Kelly Tomlin, and indicated that she had put the company in a good position for growth.

The JPS made US$24 million net profit on revenues of US$712.5 million for its 2016 financial year or 9.4 per cent less net profit than a year earlier.

“We are taking up from where Kelly has left off. We are not ignoring what she’s done,” said Kawamura.

He added that the major Asian-based shareholders want to raise the return on equity, which hovered at six per cent for its 2016 financial year (US$24 million over total equity at US$395.4 million). Japanese-based Marubeni and Korean-based East West Power each own 40 per cent of the JPS, while the Government of Jamaica holds 19 per cent and individual investors owning the remainder.

“At this moment, we cannot say that we are satisfied. There are things to do before we can achieve that target,” Kawamura said, adding that investment in equipment and plant remains a priority, along with maintaining the quality of service to customers. “Then the return that we want will be gained. But we have to earn it.”

Tomblin served as JPS president and CEO for five years after joining in 2012, following the departure of Damian Obiglio, who, himself, served for five years in the position. Obliglio led the organisation during period of oil spikes, which led to costly light bills, which reduced customer goodwill for the utility.

Tomblin entered the market as a personable CEO who focused on customer service. Her leadership also coincided with a reduction in oil prices since summer 2014.

BIG HEART

DaRosa, a Canadian, prior to his appointment at the JPS served as the CEO of the Northwest Territories Power Corporation.

“The reason we chose him is because he has a big heart. The perception of the customers might be different due to gender. But still, love is love,” said Kawamura, referring to DaRosa.

DaRosa pledges to lead the energy distribution monopoly with compassion. “Every organisation has to have a heart, otherwise it will fail,” DaRosa told Gleaner Business.

Tomblin did a “fantastic job” for the people of Jamaica, reasoned DaRosa, adding that he will certainly continue down that path without any major course correction.

“My number-one priority is the health and safety of the general public, employees, and contractors. That’s imperative for JPS as a utility. Number two is that I will focus on efficiency to ensure that JPS is the most efficient organisation that it can be. Number three would be the socio-economic development for the people of Jamaica,”he said.

The JPS can have a positive impact on the economy through conservation, he added.

Outgoing JPS President Kelly Tomblin.

Power utility Jamaica Public Service Company (JPS) plans to build a 24.5-megawatt facility to store energy as a safeguard against power outages.

It’s described as the first of its kind in the Caribbean.

JPS plans to build the facility next year, but no cost was disclosed up to press time. It will act like a giant battery that charges when solar- or wind-energy plants generate energy. It then kicks into action, the less power these renewable plants generate due to cloud cover or low wind speeds.

“The proposed initiative will allow JPS to provide a high-speed response when the output from renewables is suddenly reduced to mitigate stability and power quality issues that cause outages to customers,” stated JPS in a release.

The company did not respond immediately to questions seeking more details. It initially said the release, which appeared on the Jamaica Stock Exchange’s website, was not meant to be made public until Monday.

Peak energy usage in Jamaica starts at 6.30 p.m. to 9.30 p.m, which represents a leisure peak, rather than an economic development peak. That becomes important as solar plants reduce power generation just as the peak period starts.

PROVIDING VALUE

Additionally, wind farms optimally generate power at nights but after peak periods. The storage facility would, therefore, provide value as it comes into effect at peak periods utilising the power already stored.

The facility requires regulatory approval from the Office of Utilities Regulation (OUR) but in anticipation, the JPS board of directors last week signed off on the hybrid energy storage solution, the release stated. The project involves construction of a 24.5MW facility at the Hunts Bay Power Plant Substation, and will be a combination of high-speed and low-speed flywheels and containerised lithium-ion batteries. Once approved for construction, it would become operational by the third quarter of 2018.

“The innovation will help to secure grid stability and reliability in the face of increasing intermittent renewable energy. The energy storage solution will have power readily available in the event that solar and wind renewable systems, suddenly lose power due to cloud cover, reduced wind or other interruptions,” stated the release.

It will also provide a much faster, cost effective and environmentally friendly spinning reserve or backup as an alternative to traditional generation spinning reserve which is required by the company.

INCREASED FLEXIBILITY

Additionally, the JPS is seeking to convert more generating units to use liquefied natural gas (LNG). This will result in increased flexibility of the generating units, as the JPS moves to ensure that customers have a more reliable, affordable and sustainable quality service. JPS continues to steadily diversify from solely heavy oil fuel to include natural gas and some 115MW of renewables.

Energy efficiency is now an integral part of JPS’ push to become a more modern and cleaner energy provider.

Jamaica has an energy intensity of approximately 4,800 kilowatt-hours (kWh) per US$1,000 of gross domestic product. To put that into perspective, last December outgoing JPS president Kelly Tomblin described it as one of the highest in Latin America and the Caribbean. She indicated that such inefficient use of energy constrains Jamaica’s growth.

The country, however, has made some gains in its efficiency drive. It ranked 92nd in the World Economic Forum’s Global Energy Architecture Performance Index Report 2017, up from 98 the year before.

The rise in rank was attributed to the 80MW of renewables added in 2016 and plans for an additional 100MW of renewable this year.

In Jamaica last year, Wigton Wind Farm III added 24MW of renewable capacity, BMR Windfarm added 36.3MW, and WRB Content Solar, 20MW. The country saved around US$18 million (J$2.3 billion) in oil imports based on the 80MW renewable energy projects.

Concurrently, those renewable projects saved 800,000 metric tonnes in toxic carbon emissions, according to the energy ministry.

Thousands of photovoltaic panels across the UK generate 8.7GW, smashing previous high of 8.48GW earlier this month

Woman relaxes on deckchair in London.

Solar power has broken new records in the UK by providing nearly a quarter of the country’s electricity needs, thanks to sunny skies and relatively low summer demand.

National Grid said the thousands of photovoltaic panels on rooftops and in fields across the UK were generating 8.7GW, or 24.3% of demand at 1pm on Friday, smashing the previous high of 8.48GW earlier this month.

Experts said the unprecedented share for solar energy meant about 60% of the UK’s power was low carbon, taking into account Britain’s wind farms and nuclear power stations too. That figure is normally around 50%.

National Grid, which is tasked with ensuring a match between supply and demand for electricity, said it was excited but unfazed by the challenge of accommodating “significant volumes” of renewables.

Solar provided a record percentage of UK power at 1pm on 26 May 2017
 Screen Shot 2017-05-29 at 20.40.20

Duncan Burt, who manages day-to-day operation of the grid, said: “We have planned for these changes to the energy landscape and have the tools available to ensure we can balance supply and demand.”

Hannah Martin, head of energy at Greenpeace, said: “Today’s new record is a reminder of what the UK could achieve if our government reversed its cuts to support for solar, and backed the clean technologies that could provide jobs, business opportunities and plentiful clean energy for decades to come.”

The milestone reached on Friday is the latest in a series of records for solar, which has grown from almost nothing seven years ago to 12GW of capacity today. Last summer it provided more power than the UK’s last 10 coal-fired power stations.

In April this year, Britain achieved its first-ever full working day without coal powersince it started burning the fuel in 1882, thanks in part to solar energy.

Solar’s rapid growth is overturning conventions for the managers of the UK’s power grid. In March, for the first time ever, the amount of electricity demanded by homes and businesses in the afternoon was lower than it was in the night, thanks to the cut in demand due to solar panels.

Alastair Buckley, a solar expert at the University of Sheffield, said of the latest record: “I think it’s a positive sign. It’s free electricity today, for the consumer, and we should make the most of it.”

Solar power generation in the UK
 Screen Shot 2017-05-29 at 20.41.54

He said that with solar continuing to be installed despite the government’s drastic subsidy cuts in 2016, further records will certainly be broken this summer and for years to come.

Buckley said the grid could handle a far greater proportion of solar power than currently seen, because gas power stations could be ramped down. For National Grid, periods of high pressure bringing lovely weather to the UK like this week were: “really predictable, so easy to plan for,” Buckley said.

Robert Gross of Imperial College said: “This doesn’t pose fundamental problem for the grid – many sunnier countries manage a similar proportion of solar on a much more regular basis.”

Government statistics published on Thursday show that UK solar power capacity has grown from 11.3GW in April last year to 12.1GW this year, enough to power 3.8m homes.

Guardian graphic | Source: MyGridGB

Kelly Tomblin, who has been the face of the Jamaica Public Service Company (JPS) since she joined the light and power company as president and chief executive officer in 2012, is on her way out of the company, and heading to take up the CEO position at the United States-based power company, INTREN, effective July 10.

Tomblin will take over the day-to-day running of the firm from Loretta Rosenmayer, the firm’s founder and current CEO, who will now chair the board of what has become one of the leading utility contractors in North America.

Up to press time, Tomblin was off the island and unavailable for a comment. However, 4-traders.com, a reputable international stock market and financial news website, said Tomblin had confirmed to them that she is to be the new CEO at INTREN.

“INTREN would not be what it is today without Loretta’s vision, leadership and unwavering commitment to high standards and values,” Tomblin was quoted by the website as saying. “I am honoured to lead the INTREN team and continue the progress evolving before me.”

According to reports, Tomblin was selected from a competitive selection process from a strong field of candidates.

“She is a highly impressive and respected executive known for her ability to build diverse, meaningful cultures in a collaborative leadership style. As a recipient of the prestigious 2016 Platt’s Global Energy CEO of the Year Award, Kelly topped an impressive list of finalists leading companies in the United States and around the world,” the website stated.

ENERGY SAVING PROJECTS

During her time at JPS, Tomblin introduced several energy saving projects, as well as the use of liquefied natural gas in the country’s energy mix, even as she guided the light and power company through a profound transformation.

“This evolution comes at an extraordinary time for INTREN,” a report quoted Rosenmayer as saying. “Our momentum is strong, and our management team and employees have built an exceptional company that is one of the most trusted and respected in the industry. I’m confident Kelly is ideally positioned for her new role to continue our growth.”

INTREN has been an innovative solution partner, dedicated to building and maintaining the infrastructure of the energy industry for more than 25 years, and has served many of the nation’s foremost utility companies, private contractors and developers, and municipalities and cooperatives.

Gleaner

From left: Renford Smith, Marcus Grant and Alan Searchwell connecting the electrical components of a solar panel at the Wigton Renewable Energy Training Lab in Rose Hill, Manchester, recently.

As the debate intensifies over the possible rate increases which could face Jamaicans as more and more customers leave the Jamaica Public Service Company’s (JPS) grid, there are calls for a collaborative approach to the issue.

Manager of the Grid Performance Department at the JPS, Lincoy Small, says the various stakeholders must engage in dialogue to find an approach to provide the cheapest source of electricity to Jamaicans.

According to Small, it cannot be a matter of either renewable energy (RE) or staying on the JPS grid but a combination of the two.

“JPS is not telling people that renewable is not the way to go, because JPS even operates renewable facilities, but the key thing is to get them (grid and RE) working together in tandem to come up with the best synergy of what is best for the customer and what is best for the country,” said Small.

His comments came as Robert Wright, president of the Jamaica Solar Energy Association, told The Sunday Gleaner he has no desire for Jamaicans to leave the JPS grid.

Grid Stability

Wright said he strongly believes RE should be maximised and not just limited to large systems scattered across the island, but smaller systems distributed right across the country.

“When you have these smaller systems spread across the country it provides for better grid stability, and also it allows for more people to participate in clean energy as opposed to simply relying on large solar farms,” said Wright.

But Small said, based on experience due to the unpredictability of RE, the JPS sometimes has to resort to load shedding when customers jump on and off the grid.

He reiterated that JPS’s customers could face additional cost if the impact of RE on the grid is not handled carefully.

“So we are accepting solar power from the customers and as soon as something happens it drops off, and does so much quicker than the grid can even respond on some of those occasions, and as a result you have to be running expensive machines that are quicker to deal with those sun drop-offs or have to shed people’s light,” argued Small.

“And if you run these expensive machines or shed people’s light it means the overall cost to run the grid is going to be absorbed by the customer; you are going to have to pay for a more expensive energy source.”

The JPS executive said the company is actively seeking to incorporate new technology to deal with the loss of the intermittent renewable resources.

But Wright argued that the good news for Jamaicans is that the cost of RE is declining rapidly, enabling it to compete with traditional sources of energy.

“A system that a typical household would need in Jamaica two years ago would cost $1 million; that same system today cost $500,000, so we have seen a significant drop in prices,” said Wright.

“Also what is revolutionary is that the cost of batteries has gone down a lot, so now, even more than before, we will be able to offer that to residential customers at an affordable price.

“What is becoming more available now are systems called micro-inverters, and these allow you to install a very simple rooftop system which is cheaper, faster to install and is more appropriate for affordable housing developments, and so on.”

Batteries Expensive

But Small countered that with solar and wind on average only available for 20 and 35 per cent of the day, respectively, and the cost of buying and replacing batteries being expensive, it might be cheaper for customers to get their power from the JPS grid when RE is not available.

“It (solar) is a good thing to have, but it cannot be operated in isolation, and that is something a lot of people in the solar business not telling their customers,” said Small.

“Because even if you get a panel or a wind turbine and you get the battery, you are going to need a grid to at least charge up that battery for the 80 per cent of the time you are without solar or the 65 per cent of the time you are without wind.

“Plus, you will have to be replacing the battery every two to three years for full value, and batteries cost much more than solar panels.”

Small said the JPS is focused on supplying power as cheaply as possible so persons can take the cheap power from the grid rather than go buy a battery and use the solar power and the wind when it is available.

With Jamaica being a signatory to the Paris Climate Change Agreement, the utilisation of more RE forms part of the National Energy Policy which sees the country aiming to have 30 per cent RE penetration by 2030.

The country is currently at approximately 10 per cent of the quota, with roughly 300 net billing customers (those who have solar systems which allows them to consume energy and sell surplus) and around 10 larger customers.

Gleaner