Category Archives: Solar Energy

2021 And The Fable Of Solar Self-Consumption

Previous clarification: we are in favor of renewable energy in general and solar energy in particular. We dedicate ourselves to that.

This does not prevent us from taking a critical look at how the sector is developing.

Making the parallel with a famous rear, on the one hand we have “the resistance” (individuals and companies) and on the other, “the dark side” (public administrations and energy trading companies).

The discourse is that renewable energies, in addition to helping us combat climate change, will provide us with energy independence.

Our territory is full of solar and wind farms and more and more photovoltaic systems are being observed on the roofs.

But the reality is that energy price in some countries has increased almost fivefold in the last 2 years and that solar self-consumption benefits, in most countries and mainly in residential sector, vanish in tolls and unclear compensation systems.

In case of large-scale renewable systems, coupling energy generated with distribution network is still inefficient. To assess its location, in most cases scientific, technical, ecological, economic and social criteria have not been used to minimize its impact on the landscape, biodiversity and the way of life of the inhabitants of the affected territories.

As for solar self-consumption systems, currently they are only interesting in those activities in which solar radiation hours coincide with energy consumption hours.

Making the parallel with another well-known rear, to overcome these obstacles we must find the holy grail as soon as possible: an efficient and cheap energy storage system.

Meanwhile “the dark side” continues to beat “the resistance” by a landslide. One of its members regulates the sector with regulations and procedures for setting rates tailored to the interests of the other, and the other member is a voracious tax collection agent for the former.

We have other bad news … doing things right way is against the interests of “the dark side.”

How should things be done? Relying on 3 basic pillars:

1) Energy efficiency

Making more efficient use of available resources runs counter to the established idea that increasing GDP is synonymous with progress. It would involve manufacturing more energy efficient devices and reducing their planned obsolescence. In short, use fewer resources and generate less waste. Or what is the same, give priority to the environmental quality over the economic quantity.

El momento de la eficiencia energética? | Blog IL3 - UB

2) Renewable energies

Of the 3 pillars, it is the only one in which there is consensus and in which the most progress has been made. The replacement of fossil resources that produce the greenhouse effect with renewable resources for power generation is practically out of question.

Ver las imágenes de origen

3) Distributed generation

Here, too, the clash of interests occurs. Distributed generation is synonymous with energy independence and this does not interest the “dark side”. It would imply less control, fewer tolls, transparent or zero compensation systems, and less tax collection.

Distributed generation entails decentralization in interconnected generation cells and consequently the minimization of losses caused by energy transport. Power generation is close to consumption points, favoring self-consumption. This translates into energy savings, cost reduction and energy system transparency.

Using sites in urban and industrial areas (roofs) close to consumption points would have a lower impact on biodiversity.

The opposite of centralization and control. With a centralized energy network like the current one, energy is generated in plants located at great distances from consumption places. This requires a complex transportation and distribution infrastructure. From an economic point of view it represents a high profitability for its operators, but it entails a high environmental impact and a high performance loss (close to 20%); motivated by the transformation processes necessary to transport electricity.

La ULE dedica un curso a la generación distribuida y fotovoltaica

Is important the contribution of small-scale solar thermal energy with a performance twice that of photovoltaic solar energy.

Many countries, such as Spain, have incorporated it as an essential requirement for obtaining a building license for any new building.

This is very positive, but unfortunately we can affirm that approximately 4 out of 10 of these facilities do not work properly because the inspection is limited to obtaining the building license and not to its operation and subsequent maintenance; as in the case for example of a gas boiler.

Both “the resistance” and “the dark side” know that this is the way.

But the first is scattered and only has the strength to rise from time to time a few ephemeral media characters and the second continues to pull the strings in the shadows with the sole objective of maximizing its benefits.

From time to time they meet to take a photo and issue empty statements of intention of concrete objectives and plans and assign million-dollar budget items that one knows where they will go. The last one was in Rome last October.

From Sopelia we encourage you to join “the resistance” and to continue fighting against climate change, each one in his field and in his day to day because as a friend of ours says: there is no planet B.

All you need is Sun. All you need is Sopelia.

Solar Networking

Second year of the occasional meeting between an expert in solar energy and another in digital marketing is completed.

On these dates we usually look back 12 months to make balance:

* Blog that you are reading now is still full working.

It includes a research work on solar sector in Latin American region. Right now we are analyzing Honduras.

Three posts from each of the 20 countries of the region describe their renewable energy matrix, their solar thermal sector of domestic applications and their photovoltaic sector.

Also included are contents about solar technology, latest information and new developments.

* The web-based e-learning platform Moodle 3.1 that allows you to receive solar energy training from your PC, Tablet or Smartphone wherever you are; has finished its fourth edition.

* The 3 ebooks exclusively sold on Amazon (Introduction to Solar Energy) and Casa del Libro (Technical Manual-Commercial of Solar Thermal Energy and Technical-Commercial Manual of Solar Photovoltaic Energy) continue to be a success.

* Solar Layout downloads continue to increase, the most intuitive solar app on the market for collectors and solar modules positioning at the installation site.

* We continue to actively participate in projects management and development (not only in Latin America).

* We continue to commercialize equipment and turnkey solutions for solar thermal, photovoltaic and solar lighting.

* Sopelia has been Media Partner of most important solar energy events at regional level.

All this was possible thanks to changes and transformations that in IT, telecommunications and work sectors have occurred in recent years.

Currently professionals situated in different locations can create, exchange information, interact in a virtual way, develop and manage projects.

Work teams are flexible. They are born, transformed and mutated depending on business opportunities.

The fuel for all this to work has been a powerful solar and linked sectors professionals and companies networking that increases day by day with Social Media impulse.

Resultado de imagen de networking

What we could call “stable cast” is the following:

+ Marcelo Ferrari – CEO

+ Nahuel Rull – Argentina Country Manager

+ Tomás Ruiz – Solar Thermal Energy Expert

+ Francisco Ramírez – Photovoltaic Solar Energy Expert

+ Federico Redin – Facilities Expert

+ Dante Fiorini – Digital Marketing Expert

+ Rafael Chacón Almeda – E-learning Expert

+ Antonio Vites – SEO & SEM Expert

+ Sergio Fernandez Alonso – Programming and Apps Development Expert.

We want to wish you a prosperous 2018 in which we hope to continue collaborating in your solar energy projects and count on you to continue tending the Sopelia Network.

Free Solar Tools (II)

On Internet we can find free tools for basic or low complexity solar systems dimensioning and for certain components or accessories estimation.

Sopelia research team has carried out an exhaustive search and testing from which a new corporate website section called Free Solar Tools has been created.

Selected tools were classified into 4 categories.

Today we will analyze the second one: Consumption Calculation.

In first category we have already analyzed tools to obtain data about solar resource and other variables to consider in estimating energy solar system will provide in our location.

Now we are going to analyze tools to calculate the “load”, that is, the energy demand to be satisfied.

Tools order is not random. We have prioritized the most intuitive, the most universal and those that can be used online without download.

For this second category our selection is as follows:

1) Housing heating calculation

Approximate calculation tool developed by the Ministry of Industry, Energy and Mining of Uruguay.

Consider the variables surface, heating technology, materials, openings, insulation and roof.

Data that interests us to solar thermal system dimensioning is kcal / month.

Imagen relacionada

2) Advanced Energy Efficiency Calculator

Tool to make detailed calculations of house energy consumption.

It includes a general table (all devices), a groups table (device families) and a configurable table (custom).

Last one is a version in which you can modify table data and know more accurately your particular case.

Resultado de imagen de electrocalculadora

3) Hot water, heating and pool conditioning demand calculation

Spreadsheet for hot water, heating and swimming pool conditioning demand estimation.

Only Spain localizations are deployed, but can be used as template and adapt to any location by manually solar resource and other starting data entering.

Inputs: location, number of occupants and occupant’s consumption, temperature of use, collector’s number.

Outputs: collector surface, inclination, accumulation volume, yields and savings, demand and coverage calculation and comparative graphs.

Resultado de imagen de Cálculo demanda ACS, calefacción y climatización piscina

4) Electrical consumption calculation

Only available for PC.

Cannot be viewed from mobile devices (Smartphone / Tablet).

Application developed by the Ministry of Energy and Mines of Peru to estimate electricity consumption based on each device power (W) and hours of use number.

Resultado de imagen de Ministerio de Energía y Minas de Perú

5) Energy consumption calculator

Very easy operation online free basic calculator.

Different electrical devices, their power, and their daily use regime are added.

Resultado de imagen de calculadora del consumo eléctrico

Accessing Free Solar Tools section of Sopelia’s corporate website you will find the links to have these tools and begin to configure your future solar system.

All you need is Sun. All you need is Sopelia.

Free Solar Tools (I)

On Internet we can find free tools for basic or low complexity solar systems dimensioning and for certain components or accessories estimation.

Sopelia research team has carried out an exhaustive search and testing from which a new corporate website section called Free Solar Tools has been created.

Selected tools were classified into 4 categories.

Today we will analyze the first one: Solar Resource and Other Baseline Data.

In this category we will find data about solar resource and other variables to consider in order to estimate the power that solar system will provide in our location.

It is the starting data for necessary solar system dimensioning in order to satisfy our energy demand.

Tools order is not random. We have prioritized the most intuitive, the most universal and those that can be online used without download.

For this first category our selection is the following:

1) Meteorological and solar energy data

Sponsored by NASA Science Applications Program and developed by the World Prediction Energy Resources Project, this site offers information and supporting documentation for solar systems dimensioning.

The “Data Retrieval” section that interests us is “Meteorology and Solar Energy” and within it, “Data Tables for a Particular Location”.

Once there, entering Latitude and Longitude of our location, we access a series of calculation parameters that we can select or obtain entirety.

Resultado de imagen de eosweb

2) Daily and annual solar calculator

Spreadsheet developed by US NOAA Earth System Research Laboratory based on Jean Meeus astronomical equations algorithms.

It allows to calculate solar day, year and location specific data.

Resultado de imagen de national oceanic and atmospheric administration

3) Renewable energies Global Atlas

Geographic Online Information System (GIS) interrelated worldwide distributed centers data.

In addition to information about renewable energy resources you can access information such as population density, topography, land use, infrastructure and protected areas.

The objective of this system is to allow users to identify areas of interest for further exploration.

It is an initiative that involves national institutes, energy agencies, private companies and international organizations.

Resultado de imagen de global atlas de energías renovables

4) Opensolar

Open database (you can extract and insert information) with global average daily solar radiation data for each month of the year measured on the surface.

5) Monthly average radiation calculation

Tool developed by IDEA research group to calculate monthly average radiation on arbitrarily oriented and inclined surfaces.

Resultado de imagen de Grupo IDEA universidad de jaén

 

Accessing Free Solar Tools section of Sopelia’s corporate website you will find the links to have these tools and begin to configure your future solar system.

All you need is Sun. All you need is Sopelia.

The Solar Software Industry

At end of work that resulted in corporate website Free Tools section, Sopelia’s R&D area went work to analyze Solar Software sector in depth.

Around 70 professional software companies were classified in 4 categories:

1) Solar thermal systems configuration

2) Solar photovoltaic systems configuration

3) Monitoring applications

4) Complementary applications

Resultado de imagen de solar software

Here are the conclusions.

Software for solar thermal systems configuration supply is very small. Its total share is only 9%.

Software for solar photovoltaic systems configuration offer, with a 43% participation, is the most extensive; followed by monitoring applications, whose total participation is 26%.

Finally, complementary applications offer (which includes facilities design, project management and financial evaluation software) participates with 22%.

The largest solar software vendors’ concentration is in California.

This is the result of two factors: it is the USA state with further renewable energies development promotion policies and the most developed place in information technology sector.

In North American market, are offered applications that cover the entire distributed generation PV systems value chain.

Software for: potential customers identification, customer relationship management (CRM), proposal generation and system design, investment financial risk management, operation and energy management.

Providers located outside United States focus almost exclusively on large-scale solar systems.

Something that caught our attention with force is the little or null response capacity of many suppliers.

The only communication ways is a web form or a phone that does not work and after 2 months of survey, we didn´t get answer to our questions in 22% of companies.

This is an aspect to consider when buying software, since technical support is a key factor in this product.

Solar Software sector will open Strategic Partners section of this blog in 2018.

Resultado de imagen de strategic partners

This new section will include suppliers who have incorporated the Latin American market into their business plans and who have assigned resources to provide reliable products and good customer service.

In Solar Software sector, the news is not very encouraging.

Despite being one of the regions with highest potential and currently with the highest levels of renewable energy investment, very few companies have focused on Latin American market.

The vast majority have not updated their solutions to adapt to this market and do not have the operational capacity to provide adequate after-sales service.

Companies that take the initiative will acquire a dominant position in the region.

All you need is Sun. All you need is Sopelia.

Surfing The Third Wave

Distributed energy generation is the true energy revolution.

It is an unstoppable process, no matter how governments and large electricity companies strive to maintain a centralized and obsolete energy matrix.

Are we completing the Third Humanity Development Wave?

Probably yes.

Alvin Toffler calls First Wave the one that arose with agricultural revolution (from year 8000 BC until XVII century).

Hunting and fishing stage is overcome, and agriculture is born; emerging new structures such as commerce and first villages.

Second Wave emerges during XIX century, with Industrial Revolution in which steam engine and printing press replaced manual labor.

Huge urban centers form; mass production concept is born; physical transport are intensified thanks to railroad, car and steamboat; natural resources begin to exploit as energy or raw material source; producer and consumer concepts are born.

Third Wave encompasses changes that world is living in last 50 years, which break paradigms that Second Wave imposed on us.

This Wave is at its peak and we surf more and more on it disarticulating structures through decentralization, demassification and personalization.

Resultado de imagen de la ola del sol

In Sopelia, we firmly believe that citizen empowerment through distributed generation is the means to achieve energy sovereignty at individual and national levels.

That is why we want to share this article published in a Spanish newspaper last Sunday, July 9th.

It puts name and surname to protagonists of a situation that until recently would have seemed to us of science fiction and that hopefully is more and more habitual.

In Germany Also Electricity Can Be Sharing.

All you need is Sun. All you need is Sopelia.