In 2004, the average price of an installed rooftop solar module was about US$3.50 per watt. The cost of solar in the USA is now plummeting. In the four years since 2016, solar modules prices have (in all USA markets) fallen from US$ 0.63 per watt to about $US 0.20 per watt.
Many existing home grid-connect solar systems have excess capacity outside peak periods. Solar energy fed in during the day can be re-drawn during off-peak periods, for much the same price, to charge an electric car. This is because many grid networks have excess capacity outside peak periods. Furthermore, such charging extends battery life: all dislike ongoing deep discharges.
Updated 2020 Electric vehicle history Electric vehicles have existed for longer than most people think. They long pre-date petrol and diesel. This electric vehicle history by Collyn Rivers is an overview. The first dc electric motor (1866). Pic: Siemens UK. The...
Updated 2020 Electric vehicle motors AC/DC Electric vehicle motors use one or other of the two main kinds of electricity: alternating current and direct current. Both are effective as electric vehicle motors. Alternating Current (AC) is where electric current...
This vital easy to read guide shows you how to convert to your own all solar home at minimal cost. You can readily do this in much of the world between 50-degree latitudes north/south. This easy to read article shows that doing so can save you thousands of dollars.
It is now virtually certain that about half of all cars will be electric by 2030. The current part fossil-fuel/part electric hybrids will be phased out as battery storage technology advances (to provide comparable range) and the recharge network becomes global.
Globally, there is move to electric vehicles. Apart from minor rubber tyre particles they are virtually emission free.They are also about 80% efficient. If, however, their electricity is from fossil-fuelled power stations, their emissions are similar to year 2020 petrol-fuelled (or hybrid) vehicles.
It is often feasible to have portable solar in your rented home. Here’s how to do it simply, safely, legally and cheaply using readily bought parts. It requires space that faces the sun for some daylight hours year-round. It must also be within 50 degrees latitude north or south. You use high efficiency maximum-size solar modules to maximise input
We always wanted to stop paying for electricity, and now we have. It getting easier to free yourself from dependence on the grid. We decided against going off grid. Why waste excess electricity when someone is willing to pay for it!
Inverters for homes and properties convert the typical 24 or 48 volt battery bank’s output into grid-like 110 or 230 volt alternating current. Consider only those marketed as sine-wave (not modified sine wave etc). High quality sine wave inverters produce electricity that is ‘cleaner’ than the average grid supply. Other types do not. Their output is likely to wreck sensitive electronics.
You can make RV solar and alternator charging work. It is complex on post-2014 vehicles. This ongoingly updated article explains how.
Solar shadowing is like blocking a water pipe. If one cell is fully shadowed, it does not just block current through that cell, it blocks the entire string. Because of this, only a few shadowed cells can block your total solar output. If partially shadowed, (e.g. by light cloud) the loss is proportional to the amount of sunlight being blocked. The higher quality solar modules produce some output unless clouding is severe. It is, however, rare to have zero during ‘daylight hours’.
Updated 2020 How much solar capacity do I need This article answers how much solar capacity do I need. It's valid anywhere in the world that has enough sun. It can save you a lot of money. The map below shows the amount you typically have available in Australia....
A backup generator is close to essential for home and property stand-alone solar. You can choose to down without but doing so may triple the cost of that system.
Until 2010, solar modules were so costly that intending users did complex sums to minimise the amount of solar input required. Those days have gone: solar is now so cheap (10% of that 2010 price) that the only (RV) limitation today is the space available for solar modules.
Some solar scams are widespread while others are rare. It’s vital to keep yourself informed. Here are 10 scams. There are more to come.
This excellent USA system assisted USA’s residential and commercial solar installation to increase by over 1,600% since 2006. That’s a compound annual growth of 76%. It enables home-owners to use the credit to offset their personal income tax. It applies when home-owners buy the systems outright and have them installed on their homes. In the case of the Section 48 credit, the business that installs, develops and/or finances the project claims the credit.
We’ve recently upgraded our system. It now produces three to four times more electricity than we use on almost all days. We are thus not entirely free of the grid – but have yet to draw from it. At night, (or when overcast) we run from battery power. During each day we sell 15-30 kWh (at a current 20 cents per kWh).
LiFePO4 batteries are the Svetlanas of the solar world. Lead acids and AGMs are the equivalents of young children. Costly batteries can release a great deal more power but, unless you truly need it, buying them is like hiring a weightlifter to stack those cans. If lead acid (and even more so AGM) battery bank exceeds about 350 amps at 12 volts (4200 watts) it can release powers like Svetlana anyway. Knowing this difference can save you thousands of dollars!
Solar regulators for home and property systems manipulate the energy that solar modules produce. They connect between solar modules and the rest of the system and ensure batteries are optimally charged. Most solar regulators for home and property accept a range of solar input voltage: typically 12 – 110 volts dc.