Tag: Solar energy

Elad Orian, Co-founder of Comet-ME

Elad Orian, Co-founder of Comet-ME

Elad Orian, Co-founder of Comet-ME

We here at Isaac’s Science Blog are pleased to be hosting our sixth professional interview, this time with Elad Orian! Elad is the co-founder of Comet-ME, an Israeli-Palestinian organization providing renewable energy and clean water services to off-grid communities in some of the most marginalized parts of the Palestinian Territories using environmentally and socially sustainable methods.

1. Tell us about yourself and your educational/professional background.

I studied physics and later environmental science/policy. I’ve been doing my current work for 10 years now.

2. What inspired you to work in energy?

I’m a political activist along with my partner (Noam Dotan). We started thinking about something more proactive and using our abilities and know-how and energy was a very natural conclusion

3. Why did you help found Comet-ME

We actually started doing this type of work before we officially established Comet. It just so happened that these activities were relatively successful and grew really fast to the point that we needed an organization/framework that can handle this. As a result, Comet-ME was born.

4. Tell us about some of the challenges that of the Palestinian residents that you worked with.

We work with Palestinian communities in Area C of the West Bank. In the Oslo accords the West Bank was divided into three areas (A under control of the Palestinian Authority, B under Palestinian civil control and joint Israeli-Palestinian security control, and C, which happens to be the majority of West Bank under control of the Israeli government). We work in an area where the Palestinian Authority cannot provide electricity/water to communities. There are communities in A/B that have no electricity but we made a strategic decision to not replace the position Palestinian Authority.

5. What does the life-cycle of an average project look like?

One of the first things we do is to build trust with the community. We know what we do and why we do it, but the people we work with need proof. It is important that we go into a community when we know that we have the funding. We are lucky to have so many long-term donors trust us so when we start a project/budget cycle we don’t know where we are going to work because we need to do a survey of the community, conditions of each place, and then we do a detailed design of system and then we will purchase all the equipment that is required. There are some long-lead items so we do work in houses of the villagers and then once we have everything we install it. Once the installation is finished the hard work is started when service is provided. Because Comet is about providing service and we make sure service is running for a long period of time. In this way, we are like a utility. Every system brings service.

6. What technology does Comet-ME use to help communities establish energy independence?

We always use solar systems. Sometimes wind/diesel hybrids. Our systems can be designed to work from 1 family up to 40/50 families.

7. Tell us about your water program

After a few years of working exclusively with electricity, we decided that we had the organizational capacity to do something else. This is a very different program since many of them already have water, just not enough. Our system is a pump attached to a filter to obtain clean water, it’s a simple single-family system that collects rainwater and pumps it. We developed a system that pumps and filters rainwater using electricity when the batteries are full. There is also a stewardship component where water quality is sampled from all the users on a regular sample schedule to make sure systems are doing what they are meant to do.

8. Is Comet-ME looking at the Water-Energy Nexus and if so how is it?

Very much. Our water systems are dependent on our electricity systems for operation.

9. Have you received any interest from universities on the work that you do?

We have some collaborations with some universities. We also have a few students that have written master’s degrees with us. We don’t do much advertisement so we’re not really a household name.

10. Is Comet-ME looking at how to deal with climate change resilience?

Although we don’t title it, our work is directly tied with climate resilience due to providing an independent source of energy

11. How do you see your organization fit into a long-term Israeli-Palestinian peace partnership?

If there is a peace agreement signed and the West Bank becomes a Palestinian state then we would gladly hand over systems to a Palestinian organization to handle it. I don’t think it would be a problem.

12. Do you think that the Comet-ME model has any application outside of the Palestinian territories?

There are many components that certainly are and some that are idiosyncratic to conditions/politics of the West Bank.

13. What can someone do to help out with your organization?

One can always donate money, also if you’re technically inclined and interested in such issues we do have volunteers from time to time. Feel free to reach out and join us!


So there you have it! Elad, we are very grateful for giving us your time to talk about this very important work. Your organization’s work is a textbook example of how people can apply their scientific knowledge to make the world a better place.


If you would like to connect with Elad and Come-ME, you can find their website here and their facebook page here.


Image credit DW.com

The Carbon Footprint of Solar Energy

The Carbon Footprint of Solar Energy

The Carbon Footprint of Solar Energy


“How does solar energy have a carbon footprint?”

Renewable energy is marketed as being clean and healthy for the planet. However, like all industrial processes in this world, its manufacturing phase produces pollutive byproducts. Solar panels are made through the extraction of minerals such as quartz and the use of high temperatures. All of these actions are not only energy intensive but also creates greenhouse gasses. But even through solar panels have a carbon footprint associated with their construction, the fact that they do not produce any climate externalities during operation mean that they will emit much less carbon over their lifetime than traditional energy sources. In fact, research has shown that by displacing other more carbon intensive energy sources they can pay back their production pollution in as little as a few months (Comodi et. al. 2016) ! And with more and more factories adopting renewable energy as their power source and using cleaner production methods, the The Carbon Footprint of Solar Energy will only shrink in the future.

Comodi, G., Bevilacqua, M., Caresana, F., Paciarotti, C., Pelagalli, L., & Venella, P. (2016). Life cycle assessment and energy-CO2-economic payback analyses of renewable domestic hot water systems with unglazed and glazed solar thermal panels. Applied Energy, 164, 944–955. https://doi.org/10.1016/j.apenergy.2015.08.036

Solar Financing

Solar Financing

Solar Financing


“How are solar projects financed?”

The solar industry is one of the fastest growing market forces in the world. However, like all infrastructure related expenditures, it needs financing to back it up. Such Solar Financing can come in numerous forms, whether it be investments from venture capital firms or debt from banking institutions. 

Solar Commissioning

Solar Commissioning

Solar Commissioning


“How can we ensure that solar energy is working properly?”

Solar energy is an ongoing process. When solar panels are installed, they will need an outside authority to check-up on them and make sure that they are working properly. This is known as Solar Commissioning and is necessary to make sure that the new energy paradigm is working correctly.

Solar Insolation

Solar Insolation

Solar Insolation


“How does the Earth receive energy from the sun?”

Every second of every minute of every hour the sun is shining upon the Earth. This energy absorbed is known as Solar Insolation and is responsible for shaping the Earth’s climate and solar energy.

Image credit Wikiepdia.org

Why Exporting Solar Energy over HVDC Lines During Summer Could Be Beneficial for California

Why Exporting Solar Energy over HVDC Lines During Summer Could Be Beneficial for California

Why Exporting Solar Energy over HVDC Lines During Summer Could Be Beneficial for California


“Why might exporting solar energy during fire season be in California’s benefit?”

Using HVDC for cross-border energy trading in and out of California is a fiery topic. Although it could achieve regional grid integration and help solve many indeterminacy issues, it also holds great risk in decreasing fire resilience if done during the fire-prone summer. Since we’ve already discussed some alternative against summertime export, it would only be fair to include solutions in support. Since California generates an oversupply of solar energy during the Summer, it can be exported to less sun-blessed states such as Oregon and Washington. Not only would this make-up for its winter deficits, but could also be used a policy leverage tool with other states. This is Why Exporting Solar Energy over HVDC Lines During Summer Could Be Beneficial for California.

Why Agricultural Farms are Being Converted into Solar Farms in the American Midwest

Why Agricultural Farms are Being Converted into Solar Farms in the American Midwest

Why Agricultural Farms are Being Converted into Solar Farms in the American Midwest


“Why are agricultural farms being turned into solar farms in the American Midwest?”

A crisis and a boom is running through the American Midwest right now. Crop prices have collapsed do much that in some areas farming yields $0/acre. But due to new renewable energy incentives being passed in Illinois and Minnesota and the fact that solar provides a fixed return, many farmers are installing solar panels over their cropland. As a result, Illinois and Minnesota re experiencing tremendous growth rates in their solar industries. This is Why Agricultural Farms are Being Converted into Solar Farms in the American Midwest.

Image credit https://www.washingtonpost.com

Quantum Dots for Solar Panels

Quantum Dots for Solar Panels

Quantum Dots for Solar Panels


“Why are quantum dots for solar panels so useful?”


Quantum dots are bringing a revolution into the world of semiconductors. And since semiconductors are the backbones of solar panels, things will be greatly changed for them as well. The extra emissivity offered by quantum dots means that two and possibly three electrons can be generated for every photon received, vastly increasing its potential! Quantum dot solar panels can achieve as much as 65% efficiency, nearly double of the theoretical limit of normal panels. This is why Quantum Dots for Solar Panels are so exciting.

Image link https://upload.wikimedia.org

How Many Pieces of Paper Can a Single Solar Panel Produce in a Single Day?

How Many Pieces of Paper Can a Single Solar Panel Produce in a Single Day?

How Many Pieces of Paper Can a Single Solar Panel Produce in a Single Day?


“What is the amount of paper able to be produced by a single solar panel in a single day?”


Every industrial process in this world takes energy, and paper production is no different. According to calculations done by Stanford University, a single sheet of paper takes 138.0 kJ to produce. Since a typical solar panel can produce one kilowatt-hour (equivalent to 3600 kJ) in a single day, it can produce around 26 pieces of paper! Keep in mind that this is just a single solar panel, so a whole array will be able to produce much more. This is How Many Pieces of Paper Can a Single Solar Panel Produce in a Single Day.