Amruth Puttappa

Why India needs Grid Interactive Inverters ?


Solar Off-Grid System

Solar Market is broadly categorized into three segments globally

  1. Solar Off-Grid :Off Grid Inverters are principally meant to be used with solar power systems (or wind and hydro) for a home or business totally disconnected from the electric utility company. They can also be used for providing emergency backup power when the electric company’s power fails.
  2. Solar Tie:A grid-tie inverter is a power inverter that converts direct current (DC) electricity into alternating current (AC) with an ability to synchronize to interface with a utility line and provides net metering capability. Net metering allows a solar power system owner to sell surplus energy back to the utility, thereby reducing or eliminating your electric bill.

    Solar Grid-Feed

    Solar Grid-Feed

  3. Solar Grid-Feed :Grid-interactive systems are based on their grid-tied and off-grid counterparts. Like the inverter in grid-tied systems, the inverter in a grid-interactive system can convert solar-generated DC power into AC power that is then fed directly to the grid.

    Solar Grid-Interactive

    In a grid-interactive system, however, the inverter has multiple additional functions to perform. Under normal conditions, the inverter maintains the battery in a state of full charge in preparation for use during power outages. When the grid goes down, the grid-interactive inverter seamlessly steps in to invert DC power from both the solar and battery sources into usable AC power to run selected loads.

How IoT disrupt the Milk Industry


Amul disrupted the Milk industry in 1950’s and caused what we popularly called milk revolution, since then annual milk production and collection has be raising annually over 10%.

Technology made its ways to many sectors, but still milk collection has be archaic and needs a second revolution.

Milk is collected in various villages across India in collection centers, which in turn is transported from collection centers to Milk Processing units. IMG_20161217_160213

The most important thing is what happens in the Milk collection center at villages, rather than Milk Processing units, because the quality of the end milk depends on maintaining the quality of the milk at village level.

Many co-operatives now use Milk Chillers at collection centers, in a way that solves the problem, but not quite enough.

The problem with having just chiller is that, what is happening to these devices will not be know to the Milk Processing plants.

How much milk is coming today ? What is the temperature of the milk ? Quality of the milk, these parameters needs to be monitored constantly to improve the ROI of the milk.

This is where IoT can be a game changer.  We  installed our IoT devices iIMG_20161217_163306n few places at Collection centers and delivered a game changing insights, which improved the collection ROI by 25%.

We also found out that Chillers were not being cleaned optimally, which was major cause of quality degradation of the milk at collection points.

What was considered unknown and un-manageable, suddenly become know and predictable.  The milk co-operative was able to not only got the accurate milk collection by 7 am in the morning, but can also constantly monitor the milk temperature remotely across their chilling centers.


Power Sector is moving from Energy Monitoring to Energy IoT as consumers becoming producers


When the power plant was brought up in the earlier days it use to be of the size of several 100’s of Megawatts, built in remote location and electricity was transmitted over 100’s of miles to the point of consumption. Because the installation runs in 100’s of millions of dollars, if not billions power plant operator can manage a team of experts installing and monitoring the system. These monitoring systems like SCADA can run into half-a million dollar type of cost and man power to manage it. This is still ok if you have large power plant.


With the advent of Solar, individual homeowners can produce power as low as 1KW and sell it to grid or to their neighbors.  Even small plant like this one cannot have the luxury of sophisticated monitoring system, until IoT comes into picture.  With IoT the entire site operations can be automated. Once the data goes to cloud in IoT framework, Machine Learning and AI algorithms can make the prediction of energy generation, any problem in the site or managing the maintenance schedule autonomous without any human intervention.

Allevating Energy Poverty

From only about 30 GW of renewables today, India aims to achieve a capacity of 175 GW by 2022, of which solar is going to account for about 100 GW. The target by 2030 is 350 GW, of which 250 GW is likely to be solar-based. This translates to Annual Growth of 29% YoY for next 7 Years and 21% growth after that.

Solar and storage together will also act as a tool for lifting 35 crore Indians off-grid —around 50% of India’s rural population — and out of energy poverty.

In this 21st century access to electricity is fundamental right and India should leapfrog implementation by directly going solar in india.

India will reportedly require about $250 billion of investment in the renewable energy sector by 2022 to achieve these Goals.

The big question remains how is India going to achieve this ?

The Only way that is possible is that public-private partnerships that ensures the success of implementation of government programmes without leakage.

Why Solar Panels are So Expensive ?

People often ask me this question and I though it is best to explain it here once for all.
Most people think that Solar Panel is just Silicon Diodes, But well You have to understand the What a Solar Panel is made of
1) Silicon Diodes
2) Aluminum Frame
3) Glass Protective Layer
The of manufacturing Silicon Diodes is only 50% or less , The rest in the commodity metal like Aluminum, whose are pretty stable over the period of time.
Slicion Part of the Solar Panel is offcourse following the Moore’s law
But also the problem is with the efficiency of the Absorption co-efficients, most diodes in commercials panels are pretty in-efficient that means
Only 18 to 21 % of energy is absorbed and converted to electricity at STC, in the field they absorb abysmal <15%
These factors make per-watt cost of Solar Panel more expensive. If we just double the panel efficiency, then for same wattage 50% less aluminum, 50% less glass and 50% less silicon.
So the right Question would be instead on Why, How can we make Solar Panel less expensive.


ThingsCloud 2015 Review

Happy 2016 From ThingsCloud Family. 2015 Has been very good for ThingsCloud. Some of the significant achievements are

1) Got into Top 20 in GMIC

2) Showcased Products in IIMB Bootcamp

3) Became part of IBM Global Entrepreneurship Program

4) Became Part of RevvX Hardware Accelerator

5) Showcased Product at IoTNext Conference

6) Applied for Patents

Looking forward to Big bang 2016.

Paris Climate Summit a Big shot in the arm for Renewable Energy

Paris Climate Summit was a great success because

1) It was attended by 195 countries and most of then acknowledged need to control and limit emissions

2) Developed countries openly acknowledged that they had greater roles in causing climate damage

3) Developing countries argument that they need to grow by burning cheaper coal and Developed countries should find solutions for cheaper alternatives found resonance.

So, what did Paris summit achieve

1) Almost all countries, around 180, agreed to limit temperature rise to 1.5 degree C.

2) Developed countries should voluntarily commit $100 Billion to fund Clean Energy projects in poor countries.

3) Almost 180 countries has given their emission target for 2020 and developed countries must adhere to the targets and developing countries are encouraged to

4) There was no penalty for missing the targets, but every party is encouraged to achieve and emission are monitored


Overall it is a win-win for everyone and all countries has pledged to work towards cleaner environment and better earth


Weekend at IIMB Bootcamp

It is our please to let you all know that we will be at Indian Institute of Management, Bangalore (IIMB) for the Eximius Annual Bootcamp. We are one of the 20 startups selected to present there and have a booth for all two days. If you are around there please say hi to us and our team. We would love to hear from you all.


Data Is the New Dinosaur

Data is becoming one heck of a challenge to solve. Take a example of our Product ThingsHiFi- a 5KW Solar Grid-Tie UPS. This device send data every 30 seconds to ThingsCloud. On a daily basis we will have

(30/60)*60*24 = 2,880 insertions

Each data packet is around 6K byte, which makes

2880*6k= 17.2 mb/per day

For one month,

17.2 *30 = 516 mb/per device/per day

You can see where I’m going from here, even if we have a modest 1000 devices, then we will be looking around 500 gigs of data per month. Right now we are exploring different architectures to process this data.  Also, inserted  record has around 10 values.

So, per month per device it is

2880*10*30 = 864,000 values

Now, with 100 devices, it would be 86 million values, which needs to be queried. Suddenly from nowhere we need to work on big data …!!!

mThings Hardware

ThingsCloud is unveiling mThings hardware to prototype your products.  Below is the look and feel of the products. You can connect anything to this and control this from you mobile phone. Render_New_1

Product Features: Product TI CC3200 Chip, we will have both certified and non-certified modules.  This is a good starting point to connect your device to ThingsCloud Ecosystem.

Few more renders of the product Render_New_2

We are working out on the pricing and will soon update on this.