As the demand for renewable energy sources continues to grow, more and more people are turning to solar power as a reliable and sustainable energy solution. When it comes to solar ...In reality, it is recommended that you always overrate your requirements by at least 20%, therefore you would need 180W of solar panels. As part of your solar ...Step 4. 9.86 kWh / 4 peak sun hours = 2.4 kW (This is how much solar energy in kW you will need to charge your EV). Step 5. We will use a solar panel wattage of 410W, such as the Q.PEAK Duo Black ...Solar Calculator. Calculate how much power you need with these solar calculators to estimate the size and the cost of the solar panel array needed for your home energy usage.How Many Solar Panels Do You Need To Mine Bitcoin? According to DIY Solar Shack, approximately 6000 watts of solar panels are required to run a Bitcoin mining rig with multiple GPUs during the day, while also charging batteries in order to mine Bitcoin during the night. This is the equivalent of 20 x 300 watt solar panels.Jun 9, 2021 · After you put this information into the calculator, it will estimate the sizes of the solar panel array (in watts) and the battery bank (in amp hours) that you will need to support your off-grid power use. While the calculator is a simple estimate, we found that our estimate is very close to our actual daily use. Learn how to use a simple formula to estimate how many solar panels you'll need to power your home based on your energy consumption, peak sunlight hours and panel wattage. Find out the factors that affect solar panel performance and costs, and get tips on how to choose the best solar company for your needs. Dec 6, 2022 · When making the calculation, dividing the 2.658 kWp of the system by the 300W capacity of each solar panel, we get that to power the shed; we need 8.8 PV modules so that we will use a PV system with 9 of these PV modules for a total DC capacity of 2.7 kWp. Remember that surge power requirements must be provided for the tools to work. May 6, 2023 · So if you use 12 kWh a day according to the calculator, divided by three would be 4kWh, times 1.3 would equal a 5.2 kWh solar array. That would be 26 standard 200 Watt panels and the infrastructure you need to hook them up to your home properly. 12 kWh/3h*1.3h = 5.2kWh. 5.2 kWh/ 200watt panels= 26 numbers. A solar PV panel consists of many cells made from layers of semi-conducting material, most commonly silicon. When light shines on this material, a flow of electricity is created. The cells don’t need direct sunlight to work and can even work on cloudy days. However, the stronger the sunshine, the more electricity generated.A typical homeowner needs 28-34 panels to fully cover energy consumption. Use past bills to calculate solar needs for your home. By now, you should be closer to …The considerations will determine how many solar panels will be needed to power a 1-ton mini-split system in the United States. Based on an average power demand of 1,200-1,500 watts for a 1-ton mini-split, usual solar panel efficiency, and US sun irradiation, you would need 4-8 solar panels. Visiting a nearby solar contractor would be ...Both of the primary types of solar power are made by capturing energy from sunlight. Photovoltaic solar energy is the most common type and is produced when photons contained in sun...But you will also travel to Canada for ski season; the lowest peak sun hours you’ll experience then is 0.75 hours. (Power Consumption Wh / Solar Charge Controller Efficiency Rating)/ Peak Sun Hours. (1500 Wh / 0.98)/ 0.75 = 2040w. Rounding up the result, you’ll need 2100w of solar panels to meet your demand in winter.Summary. You would need around 120-watt solar panel to run a 12v camping or car fridge for 24 hours. You would need around 500-watt solar panels to run a medium size kitchen fridge (10-15 Cu. Ft.) for 24 hours. You would need around 800-watt solar panels to run a large-size kitchen fridge (15-20 Cu. Ft.) for 24 hours.2. How many solar panels you need to charge your electric car. Based on the table above, you’ll need between around 10 and 12 kWh of electricity per day to charge the most efficient electric cars, but even power-hungry premium EVs like the Ford F-150 Lightning need less than 20 kWh per day for 40 miles of …In reality, it is recommended that you always overrate your requirements by at least 20%, therefore you would need 180W of solar panels. As part of your solar ...Sep 2, 2021 · On the other hand, if you want to convert your AC pump to solar, you need to work with a solar technician to determine the number and size of solar panels you'll need. Generally, though, the power output of the solar panel should match the wattage of the pump. If your AC pump is 100W and a single solar panel is 20W, then you'll need 5 such modules. Aug 11, 2021 · The rule of thumb is 30 watts per square foot. For a 2000 sq ft home, you would need 6000-7500 solar panels. That’s between $72,000 to $90,000 worth of equipment! However that doesn’t take into account the cost savings and tax credits you will receive by installing solar energy systems in your area. The average household needs between 17 and 2 5 solar panels, but the exact number depends on several variables, such as your average electricity usage, …An RV battery at 50% battery will put out between 12.06-12.10 volts, on average. If your voltmeter has a number below this, charge your battery immediately. If you're going to be boondocking a lot, however, it's definitely worth investing in a decent battery monitor or gauge if your RV didn't come with one.The average home uses about 10 kWh of electricity per day. So if we assume that our shed uses half that amount (5 kWh), we’ll need enough solar panels to generate at least 5 kWh of electricity per day. In other words, we’ll need 25 watts of solar panel capacity for our shed (5 kWh x 5 hours). How to Size your Solar Power System.100 W / 16 v = 6 amps. In the summer, a single 100 Watt panel produces 6 amps per hour x 6 hours of sunlight per day for a total of 36 amps of current per day. Keep in mind that our freezer requires 75 amp-hours every day. As a result, one 100 Watt panel is insufficient. We’ll need three panels for a total of 300 …Aug 11, 2021 · The rule of thumb is 30 watts per square foot. For a 2000 sq ft home, you would need 6000-7500 solar panels. That’s between $72,000 to $90,000 worth of equipment! However that doesn’t take into account the cost savings and tax credits you will receive by installing solar energy systems in your area. NREL found that in 2022 solar panel installation labor cost made up around 5% of the total cost of residential solar projects and the cost of the solar panel modules makes up around 18%. So, if the calculator gave you a lifetime energy cost of $26,099 for a cash purchase, you can estimate that installation labor will make up around $1,300 and ... For example, if your refrigerator had an annual energy rating of 365kWh, it would require 1kWh per day. Once divided by the 24 hours in a day, you would have a running watts requirement of 0.042kW/h, as 1kWh ¸ 24 = 0.042. This means you would require a solar power system that could supply 42W per hour, as a kWh is equivalent to …5 days ago · To generate that much electricity, the average U.S. household would need about 15 to 20 solar panels. However, this number varies by state and individual needs. To estimate your average yearly ... Ideally 10 to 15 watts of charging power is recommended. A lower wattage means that you will need more time to charge your phone. In order to fully charge the phone battery, the solar panel charger voltage must at least match the voltage of a fully charged phone battery. A fully charged phone battery is 4.15 V (540 watts).It uses about 65 Amp hours to heat up, then it holds that heat for 12 hours-ish. The “Quantity” on that would be for “How many times do you plan on heating up 4 gallons of water”. Use this as a benchmark, but not a rule*. TAKE ACTION: These items go into yet another pile. Label it “Table 1.5”.The answer depends on a few different factors. Follow these steps to help determine how many solar panels you need to charge your electric car. 1. Determine kWh Per Mile. Solar panels produce energy measured in kilowatt-hours (kWh). Refer to the specifications of your EV to see how many kWh your car …How Much Battery Do You Need? Solar power is not the only thing you need to consider for off-grid energy. You also need battery power. Solar power only works when the sun is out so having extra batteries in your RV to store that energy overnight is important. How much battery you have is up to you. However, I usually recommend 24 …Using our solar system payback calculator, we have identified the optimal solar system for these two electricity usage scenarios. We can see that for 20kWh electricity usage under a morning and evening peak profile, the best solar system size is 6kW for return on investment. For the daytime focus electricity load profile, the best size is 6kW.Oct 25, 2022 · Most motorhome owners opt for 12V batteries. Lead-acid or lithium-ion (Li-Ion) batteries are the two most common battery types. Lead-acid batteries are an affordable, durable mature technology. However, they require regular maintenance and are significantly less efficient than Li-On batteries. Jan 26, 2023 ... A panel will usually produce between 250 and 400 watts of power. For the equation later on, assume an average of 320 W per panel. Use your ...Power and Light - Sun energy is the driving force that allows life to thrive on Earth. Learn about the importance of Sun energy and find out how the Sun's energy powers Earth. Adv... Using a solar panel cost calculator is an excellent way to figure out specific numbers for your circumstances. Each home consumes a different amount of electricity based on various factors. Having said that, if you take a 2,000 square foot home, the average solar panels cost equates to somewhere between $15,000 and $40,000. The considerations will determine how many solar panels will be needed to power a 1-ton mini-split system in the United States. Based on an average power demand of 1,200-1,500 watts for a 1-ton mini-split, usual solar panel efficiency, and US sun irradiation, you would need 4-8 solar panels. Visiting a nearby solar contractor would be ...Jan 9, 2024 ... In most parts of the United States, 10-20 400W solar panels should produce enough electricity to power a home without tapping into the utility ...Step 4: Calculate how many solar panels you need. Finally, you can divide the system size by the power output of a solar panel to find out how many solar panels you need. The higher a solar panel’s power output, the fewer panels you need to install. Most solar panels installed today have power ratings of around 400 watts (0.40 kW).With climate catastrophe seeming like a practical inevitability, there are more green energy companies appearing. Hydropower, geothermal and wind energy companies are in the minori...This calculator multiplies your electricity consumption by the percentage of electricity you wish to source from the sun. Electricity consumption is usually measured in kWh. k stands for kilo, meaning 1000; W stands for Watt, the unit of power in the international system of units. 1 Watt equals 1 Joule per second.The real-life solar system size to generate 2,000 kWh per month would be 13.11 kW. The 2,000 kWh per month solar system requires about 44 solar panels of 300W rating. The cost of a 2,000 kWh per month solar system will be about $35,484. Over the course of 25 years using a 2,000 kWh per month solar system …Solar panels needed = 10,800 kW / 1.5 / 320W. Using these numbers means we would need 22.5 solar panels. But since you can’t chop a solar panel in half we would either need 23 panels or could reduce the number of panels we need by using a higher wattage panel. For example, using a 400 W panel means we only need …Keep checking the voltage of your battery until it reaches about 12.2 volts. You could use a multimeter for this if your RV panel doesn’t already display voltage. At 12.2 volts, your battery is about 50% discharged. You don’t want to typically run your batteries below 50% to prolong their life (if they are lead-acid).NREL found that in 2022 solar panel installation labor cost made up around 5% of the total cost of residential solar projects and the cost of the solar panel modules makes up around 18%. So, if the calculator gave you a lifetime energy cost of $26,099 for a cash purchase, you can estimate that installation labor will make up around $1,300 and ...A 1000 or 1500 sq. ft. house needs 30 to 35 solar panels to power everything. If you scale it down to the size of a mobile house, around 500 to 800 sq. ft. you only need 15 PV modules as we mentioned. The roof is smaller, but you need fewer panels. The problem is the weight.“How many solar panels do I need?” is one of the most common questions homeowners ask, and for good reason. Installing solar panels is a big investment, and you want to …The Solar sizing calculator allows you to input information about your lifestyle to help you decide on your solar panel and battery requirements. You’ll just need to know what total watts your electronics will consume, how long you plan on running the devices, your charge controller efficiency, and average sun hours per …So, how much energy does a solar panel produce? Most residential rooftop solar panels generate somewhere between 250 and 400 watts of electricity during peak ...A solar PV panel consists of many cells made from layers of semi-conducting material, most commonly silicon. When light shines on this material, a flow of electricity is created. The cells don’t need direct sunlight to work and can even work on cloudy days. However, the stronger the sunshine, the more electricity generated.May 18, 2023 · Determining how many solar panels you need to run your travel trailer also heavily depends on how much you use your generating electricity. Generally, the majority of campers find it enough to travel with between one to three 100W solar panels, which are capable of generating 6-amp electricity per peak sun hour. Depending on consumption you may need to allow for 2,000kWh in a cold month. Therefore if all your heating and energy comes from solar pv (photovoltaic) panels you will need around 70kWp — which equates to around 165 panels. I would certainly not be encouraging everybody to install that many; the cost of solar panels alone make this …Find the perfect solar panel size for your house depending on your electricity consumption and location. Learn how to calculate your solar panel needs, size, cost and savings with this tool.To produce 2500 kWh per month, you will need a solar system sized between 13.89 kW and 37.04 kW. If you only use 100-watt solar panels, you will need anywhere from 139 to 371 100-watt PV panels for 2500 kWh/month of electricity generation. If you only use 300-watt solar panels, you will need anywhere from 47 to 124 300-watt PV panels for 2500 ...A 10kW solar system which consists of 40 panels can produce an average of 14,000 kWh per year. You will need a roof space of about 704 square feet (65.4 square meters) for a 10kW system. The average size of a photovoltaic solar panel is 65 inches long and 39 inches wide (165 centimeters to 100 centimeters). If you would like to calculate how ...Aug 1, 2023 ... A 20 to 30 panel system should generate enough power to cover annual energy needs. But, just as every home and family is different, the same is ...30 watts. Summary. You need a 120 watt solar panel to charge a 12V 50Ah lead acid battery from 50% depth of discharge in 5 peak sun hours with an MPPT charge controller. You need a 140 watt solar panel to charge a 12V 50Ah lead acid battery from 50% depth of discharge in 5 peak sun hours with a PWM charge …The table below shows how much roof space a 6.6kW and a 9.9kW solar system requires, depending on your choice of panel. For example, you can see that the new Risen 450-watt panels take up 48.6m2 for a 9.9kW system, whereas the Sunpower panels need 52.9m2. If you’ve got heaps of roof space, this isn’t going to matter.How many solar panels do I need? The average home in the UK would need around 9.2m² of solar panels to satisfy its yearly electricity demands, estimated at 2,900kWh. This figure was calculated using the UK average solar radiation per year, but solar panels may not be able to power the home during …Ideally 10 to 15 watts of charging power is recommended. A lower wattage means that you will need more time to charge your phone. In order to fully charge the phone battery, the solar panel charger voltage must at least match the voltage of a fully charged phone battery. A fully charged phone battery is 4.15 V (540 watts).Step 4: Calculate how many solar panels you need. Finally, you can divide the system size by the power output of a solar panel to find out how many solar panels you need. The higher a solar panel’s power output, the fewer panels you need to install. Most solar panels installed today have power ratings of around 400 watts (0.40 kW).If you use 7000 kWh per year you'll need to install 21 solar panels. 7000/0.85 = 8235W (solar panel capacity required). 8235/390 = 21 solar panels needed to ...Van life will require anything from a flexible 50 watt solar panel to charge a mobile phone on up to a very large, roof-fixed, 450 watts of solar panels to run an air conditioner, fridge and television. It all depends on your specific setup and needs. Read on to find out more about my personal power set up, and hear from a wide range of ...June 9, 2023. If we go by Tesla’s new Tiny House project, you need six solar panels that feed 2.1kW to its Powerwall batteries for later use. On the other hand, the general consensus is that 15 300-watt solar panels will produce enough energy for a typical tiny house. Figuring out how many solar panels you need for your home using just square ...100 W / 16 v = 6 amps. In the summer, a single 100 Watt panel produces 6 amps per hour x 6 hours of sunlight per day for a total of 36 amps of current per day. Keep in mind that our freezer requires 75 amp-hours every day. As a result, one 100 Watt panel is insufficient. We’ll need three panels for a total of 300 …The average home needs between 15 and 19 solar panels to cover its daily electric usage. You can calculate the number of solar panels you will need with your …To run a 5 cu. ft. freezer for 24 hours, a 150 watt solar panel and a 400ah battery are required. You can use one 400ah battery or several smaller batteries like five 80ah for instance. In this scenario, our 5 cu. ft. freezer uses 120 watts an hour. 120 watts x 24 = 2880 watts. A 150 watt solar panel can produce 750 watts in an hour.Apr 18, 2022 ... For simplicity's sake, let's say you decide to install 300-watt solar panels and your solar panels receive 6 hours of sunlight per day. You'll ...The numbers of solar panels you will need are: A minimum of 300-watts of solar panels if you have one 12V battery with roughly 100AH. A minimum of 400-watts solar panels if you have a couple of 12V batteries or 2 six golf cart volt batteries with about 200 up to 250 AH. A minimum of 600-watts of solar panels if you have four six-volt golf cart ...Mar 8, 2024 ... FREE No-Obligation Quote: https://www.solarsurge.net/ FREE Marketing Strategy Call: https://www.solarsurge.net/media -- Links -- Solar Surge ...Once you know how much power you use, you can figure out how much solar power you need to keep up with your demand. How many solar panels do I need? To start, let’s look at how to determine the power you can get from a panel. Solar panels are labeled in how many watts they provide under standard test …To produce 2500 kWh per month, you will need a solar system sized between 13.89 kW and 37.04 kW. If you only use 100-watt solar panels, you will need anywhere from 139 to 371 100-watt PV panels for 2500 kWh/month of electricity generation. If you only use 300-watt solar panels, you will need anywhere from 47 to 124 300-watt PV panels for 2500 ... The most common way to go solar for homeowners is the installation of panels on their roofs. These systems can be purchased directly through an installer (or assembled for the DIYers) as a large ... Step 1: Calculate your Pool Pump Daily Energy Consumption. In order to know how many solar panels do you need, first, you need to calculate your pool pump daily energy consumption. And to calculate the daily power consumption you need to: Figure out your pool pump wattage. Calculate how many hours do you need to run your …If you have a house bigger than 2600 sq ft or above-average energy consumption, consider installing at least 3 Tesla Powerwalls for the whole home backup system. Consultants will request complete information to calculate how many batteries you need for the partial or whole home backup system when you decide to install …Discover the definitive guide to calculating how much solar power you need for your home. With tips and advice on everything from sizing a system to understanding …A 10kW solar system which consists of 40 panels can produce an average of 14,000 kWh per year. You will need a roof space of about 704 square feet (65.4 square meters) for a 10kW system. The average size of a photovoltaic solar panel is 65 inches long and 39 inches wide (165 centimeters to 100 centimeters). If you would like to calculate how ...300W x 24H = 7200wh/7.2kWh per day. To run this 300W fridge for 24 hours a day using solar power alone, your PV system needs to be able to generate a minimum of 7.2 kWh per day. It’s always best to purchase an array that exceeds your expected power requirements by at least 10%.The real-life solar system size to generate 2,000 kWh per month would be 13.11 kW. The 2,000 kWh per month solar system requires about 44 solar panels of 300W rating. The cost of a 2,000 kWh per month solar system will be about $35,484. Over the course of 25 years using a 2,000 kWh per month solar system …A 10kW solar system which consists of 40 panels can produce an average of 14,000 kWh per year. You will need a roof space of about 704 square feet (65.4 square meters) for a 10kW system. The average size of a photovoltaic solar panel is 65 inches long and 39 inches wide (165 centimeters to 100 centimeters). If you would like to calculate how ...Van life will require anything from a flexible 50 watt solar panel to charge a mobile phone on up to a very large, roof-fixed, 450 watts of solar panels to run an air conditioner, fridge and television. It all depends on your specific setup and needs. Read on to find out more about my personal power set up, and hear from a wide range of ...So if you use 12 kWh a day according to the calculator, divided by three would be 4kWh, times 1.3 would equal a 5.2 kWh solar array. That would be 26 standard 200 Watt panels and the infrastructure you need to hook them up to your home properly. 12 kWh/3h*1.3h = 5.2kWh. 5.2 kWh/ 200watt panels= 26 numbers.Jul 1, 2020 ... Multiply your home's hourly energy usage by the peak sunlight hours your home has and then divide that by a solar panel's wattage. You can do ...A complete RV solar panel system will typically cost between $600-$2000. RV solar panel setups are usually designed to provide enough power to recharge either small devices or a few larger kitchen appliances. Most solar panels for RVs are between 100 and 400 watts of power. Visit the EnergySage Marketplace to receive custom home solar panel ...A complete RV solar panel system will typically cost between $600-$2000. RV solar panel setups are usually designed to provide enough power to recharge either small devices or a few larger kitchen appliances. Most solar panels for RVs are between 100 and 400 watts of power. Visit the EnergySage Marketplace to receive custom home solar panel ...Aug 23, 2023 · Use this free calculator to estimate how much solar you need for your house based on your address, energy usage, roof pitch, roof orientation, and solar panel wattage. Get a rough estimate or a free quote from EnergyPal for more accuracy. Learn how to size your solar system with steps and tips. Aug 25, 2015 ... Are you trying to figure out how much power you'll need from an off-grid solar power system? This video shows you how to calculate your ...Solar panels do give a number of benefits – some are fairly obvious, but there are others you may not have thought of: Lower energy bills. Producing your own ...On the other hand, if you want to convert your AC pump to solar, you need to work with a solar technician to determine the number and size of solar panels you'll need. Generally, though, the power output of the solar panel should match the wattage of the pump. If your AC pump is 100W and a single solar panel is 20W, then you'll need 5 such …While it varies from home to home, the US households typically need between 10 and 20 solar panels to entirely offset their average annual electricity …
You’ll generally require one to five solar panels for a 100-watt. Usually, if you pick a 250-watt solar panel, one solar panel is adequate to run the AC. However, you’ll need three solar panels if they are 100W. An AC usually comes with 1500-watt, so you’ll require six solar panels with a 250-watt capacity.. Pride cometh before the fall
How Much Power Do I Need from my Narrowboat’s Solar Panels? If you are happy with a light charge to simply top up or support the charge of your batteries, rather than be the main source of charge, a 100 watt system would do the trick.Lacho Pop, MSE, holds a Master's Degree in Electronics and Automatics. He has more than 15 years of experience in the design and implementation of various sophisticated electronic, solar power, and telecommunication systems. He authored and co-authored several practical solar …We used electric for everything except the stove, furnace, and water heater, which were powered by natural gas. Our normal kWh usage per month ranged from 750-1000 kWh per month. If we were going to try to provide that same level of power to our house now, we’d need at least 6250 watts of solar panels …5959W ÷ 440W = 13.54 panels. Round up the final number, since you can’t buy partial panels. In this scenario, we would need 14 panels rated at 440 watts apiece to cover our energy …These two factors, along with the size of the panels you install, will dictate how many panels you need to effectively use solar power for RV air conditioner power supply. For example, many RV air conditioning units require somewhere between 1,700 and 3,500 starting watts and 600 to 1,500 running watts.The Solar sizing calculator allows you to input information about your lifestyle to help you decide on your solar panel and battery requirements. You’ll just need to know what total watts your electronics will consume, how long you plan on running the devices, your charge controller efficiency, and average sun hours per …Keep checking the voltage of your battery until it reaches about 12.2 volts. You could use a multimeter for this if your RV panel doesn’t already display voltage. At 12.2 volts, your battery is about 50% discharged. You don’t want to typically run your batteries below 50% to prolong their life (if they are lead-acid).The real-life solar system size to generate 2,000 kWh per month would be 13.11 kW. The 2,000 kWh per month solar system requires about 44 solar panels of 300W rating. The cost of a 2,000 kWh per month solar system will be about $35,484. Over the course of 25 years using a 2,000 kWh per month solar system …To run a 5 cu. ft. freezer for 24 hours, a 150 watt solar panel and a 400ah battery are required. You can use one 400ah battery or several smaller batteries like five 80ah for instance. In this scenario, our 5 cu. ft. freezer uses 120 watts an hour. 120 watts x 24 = 2880 watts. A 150 watt solar panel can produce 750 watts in an hour.So, BougerRV flexible CIGS solar panel – 200W range from 8.02-8.4 amp. Therefore, 8.4 amps x 6 hours = 50.4 amp hours. The calculation of 8 amps multiplied by 6 hours results in 50.4 amp-hours, so BougeRV 200W flexible CIGS solar panels effectively fullfill the estimated requirement of 50 amp-hours.Oct 13, 2022 · The number of panels you will need is the amount of solar electricity you want to create, divided by your ratios (refer to the ratio table above), divided by the solar panel power you plan to install. (watts)/solar panel power (watts) = 3,265/370 = approx. nine solar panels. Do you want to save money on your power bill? If so, investing in solar panels might be the perfect option for you. With home solar panels, you can reduce your monthly power bill, ...If your energy requirements were as such as the average mentioned above (7 Kw) and you were to use 200-watt solar panels, then you'd need more or less 35 panels to take your home off-grid. Or if you used 350-watt solar panels, you'd need 20 panels. To give you an idea of how much area say 35 solar panels will take up, you will need to find the ...In reality, it is recommended that you always overrate your requirements by at least 20%, therefore you would need 180W of solar panels. As part of your solar ...For example, if your home requires 15,000 kWh of energy per year, and the solar panels have a specific yield of 1,500 kWh/kWp where you live, you'll need a ...Now multiply that times the approximate number of hours per day that each light is on. Divide by 1,000 and voila! You have kWh per day. So again, if you have 20 bulbs throughout your cabin and each one is only on for 3 hours per day on average, then your lights are using 3.6 kWh per day..