How does weather affect solar efficiency in Pune

Pune has a moderate climate. So how does that impact the efficiency of solar panels to generate solar power in Pune?

Solar cell efficiency refers to the portion of energy in the form of sunlight that can be converted via solar PV modules into electricity. Several climatic factors affect a solar panel cell’s conversion efficiency value.

Pune is one of the highest solar resource abundant cities of India, with insolation counting to 5.5 – 6.0 kWh/m2/day. i.e. 1 square meter of area is capable of producing up to 6 kWh of electricity each day! (Source: NREL insolation data 2016)

Solar power for bungalow in Pune by Insolergy

Pune Weather Conditions and Its Impact on Solar Panel Cell Efficiency

1. Temperature

Pune is a moderate climatic zone in India. The solar radiation in this region is more or less the same throughout the year. Being located at relatively higher elevations, Pune experiences lower temperatures than hot and dry regions. The temperatures are neither too hot nor too cold.

Although the solar panel is designed to work in the temperature range of 25°C -77°C, but with every degree rise in temperature above 25°C, the solar efficiency for power generation falls by approximate 0.5%.

Pune has the average day time temperature of 33.6°C, which is one of the best climatic conditions in India, throughout the year for solar PV installation.

solar efficiency related to temperature

Solar panel efficiency during winter:

Now, if you are wondering that does solar power work in winter, then let us make it simpler-

Solar Photovoltaic means a system which uses the light from the sun to generate power.

Solar = From Sun

Photo = Light

Voltaic = electric power

So, in winter, even when the temperature is down, there is abundant sunlight for the solar PV panels to generate electricity.

2. Rainfall

Solar PV panels are waterproof, so rains do not directly affect the system. Instead they give much needed occasional natural cleaning to the installed system. The solar panels work perfectly well in drizzling rainfall.

impact of rainfall on solar power output in Pune

3. Clouds

Does solar work on cloudy days?

Clouds can block the sun rays from falling on the PV modules, thus reduction in power generation. But, Pune is not a cloudy city, and the reduced efficiency is noted only for a short time duri0ng rainy days.

Mostly Pune has a sunny weather, so occasional clouds do not much hamper the power generation. Also, according to NREL (National Renewable Energy Laboratory, USA), Pune city is marked ample in solar resources in India.

(Reference: NREL Insolation Chart)

Solar works even on cloudy days

4. Sun hours

The roof of any establishment in Pune gets the maximum exposure to sunlight and hence is the best location for solar photovoltaic installations. The average sun hours during last year is recorded as 100.14 hours per month.

For a simple solar capacity of 10 kWh, 1000 kWh of energy can be generated per month in Pune!


number of sun hours impacts solar panel efficiency

In general, weather in Pune is conducive for installing solar power plant of any scale. That being said, every house or commercial construction is different. A feasibility study and site survey is still an unavoidable step assess the potential energy available, risks, costs, and size of equipment.

Handpicked Related Posts: Solar panels or not? , Solar Subsidy in Maharashtra


Site survey and assessment for solar PV installation

Free Site survey for solar installation in Pune

Insolergy Technologies is an emerging leader in Indian solar energy industry. Headquartered in Pune, the company is one of the top rooftop solar companies in Maharashtra, IndiaTo inquire about solar panel installation or for free site surveyCall / WhatsApp9082786504 or leave a message.

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