My Home Generates Its Own Electricity: What I’ve Learnt Since Leaving Gas Behind

Solar panels, batteries, a heat pump and solar hot water have changed far more than our energy bills

Our home no longer has a gas supply.

Heating, cooking, washing, drying, lighting and almost everything else now depend on electricity. At first, that sounds like a risky decision. Electricity has traditionally been the expensive form of household energy, while gas has been seen as the practical choice for heating and cooking.

However, that calculation changes when a large proportion of the electricity is generated on your own roof.

Our home has 26 solar panels arranged in three arrays, approximately 50 kWh of battery storage, an air-source heat pump and a separate solar hot-water system. During spring, summer and early autumn, we can generate nearly all the electricity we need. On good days, we produce considerably more during daylight hours than the house is using.

The batteries store some of that surplus for the evening and overnight. Solar hot water provides much of our domestic hot water without needing to call on the immersion heater or heat pump. In winter, when solar generation falls, we use cheaper overnight electricity to charge the batteries and run appliances such as the dishwasher and washing machine.

It has taken a significant investment. It has also taken time, experimentation and a willingness to change some familiar habits.

But it has taught me that creating an all-electric home is not simply a matter of replacing a gas boiler with a heat pump or putting solar panels on the roof. It means learning to operate the house as a complete energy system.

Leaving Gas Was a Change of Lifestyle

When people discuss moving away from gas, they often focus on equipment.

Which heat pump should I buy?

How many solar panels will fit on the roof?

How large should the battery be?

Those are important questions, but the larger change is behavioural.

In a conventional home, energy is available whenever we want it. We turn on the heating, start the tumble dryer or put the dishwasher on without thinking much about where the electricity or gas is coming from.

In a solar-powered home, energy becomes visible.

You begin to notice whether it is sunny or cloudy. You become aware of when the batteries are full, how much electricity the heat pump is using and whether it makes sense to run an appliance now or later.

This does not mean constantly worrying about every watt. It means recognising that the timing of electricity use matters almost as much as the amount used.

On a sunny afternoon, using the washing machine or tumble dryer may cost us almost nothing. On a dark winter evening, the same task may require expensive grid electricity unless the battery was charged overnight.

The household gradually learns to work with the energy system rather than treating it as an unlimited supply arriving from somewhere else.

What Our Solar Panels Actually Generated

It is easy to make impressive claims about solar energy. Real measurements are much more useful.

According to my recorded meter readings, our three solar arrays generated 3,008.6 kWh between 1 January and 16 June 2025.

Recorded period	Electricity generated
January	149.8 kWh
February	215.9 kWh
March	609.8 kWh
April	806.6 kWh
May	815.2 kWh
1–16 June	411.3 kWh
Total	3,008.6 kWh

The seasonal change is striking.

January and February together produced approximately 366 kWh. April and May produced more than 1,621 kWh.

Our best recorded day during this period was 14 May 2025, when the system generated 37.3 kWh. On a dark and drizzly 19 January, it generated only 0.2 kWh.

That contrast explains one of the most important lessons I have learnt: solar panels can produce a great deal of electricity over a year, but they do not produce it evenly.

A battery can move electricity from a sunny afternoon into the evening. It cannot move May’s sunshine into January.

What Is 3,008.6 kWh Worth?

The financial value depends on how the electricity is used.

Electricity consumed directly in the house replaces electricity that would otherwise have been bought at the full import price. Electricity stored in the batteries can also replace later imports, although there are some charging and discharging losses. Electricity exported to the grid normally earns a different rate.

For scale, if each kilowatt-hour generated were valued at an illustrative retail price of 25p, the 3,008.6 kWh recorded would represent approximately:

3,008.6 × £0.25 = £752

At 30p per kWh, the equivalent value would be approximately £903.

That is not the same as saying that £752 or £903 appeared directly in our bank account. Some energy may have been exported, and the value of exported electricity may be lower than the cost of imported electricity.

However, it shows the scale of what the system produced in less than half a year.

It also excludes the benefit of our solar hot-water system. The energy used to heat water directly from the sun is not included in the photovoltaic generation figures, so that contribution is additional.

Solar Hot Water Is One of the Quiet Successes

Solar electricity receives most of the attention, but our solar hot-water system makes an important contribution.

On suitable days, it heats the water in the cylinder directly. This means that the photovoltaic panels, batteries and heat pump do not have to provide as much energy for hot water.

Hot water can represent a significant part of household energy use, particularly in a home with several people, frequent washing or high demand for showers and baths.

The benefit is easy to overlook because there is no dramatic display showing electricity being generated. The cylinder simply becomes hot.

During sunny weather, it is remarkably satisfying to know that the water has been heated largely by sunlight rather than by gas or imported electricity.

It also demonstrates why different technologies can complement one another. Solar thermal panels do one job particularly well. Photovoltaic panels generate flexible electricity. Batteries shift electricity between different parts of the day. The heat pump provides efficient space heating.

No single technology has to do everything.

The 50 kWh Battery Still Does Not Feel Large Enough

Approximately 50 kWh of battery storage sounds enormous.

For many homes, it would be.

Yet there are winter days when even that capacity does not feel sufficient. Heating an all-electric house, cooking, running appliances and providing hot water can create substantial demand. At the same time, short days, low sun and heavy cloud reduce solar generation.

A battery is a storage device, not an energy source.

It can store solar electricity generated earlier in the day. It can also store cheaper electricity bought overnight. But once the stored electricity has been used, the house must obtain energy from somewhere else.

During spring and summer, our batteries may fill relatively quickly. In winter, they can reach a low state of charge despite starting the day full.

This does not mean the batteries were a mistake. They are central to making the system work. They allow us to use solar electricity after sunset and to take advantage of cheaper overnight tariffs during winter.

The mistake was underestimating how different the winter energy balance would be.

If I were planning the system again, I would examine the coldest and darkest periods much more carefully rather than sizing everything around annual averages.

An annual total can look excellent while disguising a difficult three-week period in the middle of winter.

Washing, Dishwashing and Drying Have Become Timed Activities

One of the largest changes has been when we use appliances.

In summer, the best time to run the washing machine, dishwasher or tumble dryer is usually during the day, when the solar panels are generating strongly and the batteries may already be approaching full charge.

In winter, we often reverse the pattern.

The dishwasher and washing machine can be programmed to run overnight, using cheaper electricity or electricity being supplied while the batteries are charging. This preserves more stored energy for heating and daytime household demand.

This is not difficult once it becomes routine. Modern appliances have timers, delay-start functions and energy-efficient programmes. The main challenge is remembering to load them at the appropriate time.

A few practical habits have helped:

• Load the dishwasher after the evening meal and set it to run overnight.

• Prepare the washing machine before bed when winter off-peak electricity is available.

• On sunny days, check solar production before running several appliances together.

• Avoid using high-demand appliances during expensive peak periods when the battery is already low.

• Allow the home-energy system to determine the most economical time, rather than automatically starting everything immediately.

These are small changes, but multiplied across hundreds of appliance cycles, they make a noticeable difference.

The Heat-Pump Tumble Dryer Changed My View of Drying Clothes

Tumble dryers have traditionally had a reputation for consuming large amounts of electricity.

Our heat-pump tumble dryer is very different from the older machines we previously associated with high energy bills. It dries at lower temperatures, recovers and reuses heat, and consumes considerably less electricity than a traditional vented or condenser dryer.

It normally takes longer to complete a cycle, but that matters much less when it is running on surplus solar electricity.

During periods of strong generation, tumble drying can be both cheap and convenient. Instead of feeling that every cycle is an expensive luxury, it becomes another useful way of consuming electricity that might otherwise be exported.

That does not mean we tumble dry everything unnecessarily. Line drying remains simple and environmentally friendly when the weather allows.

But in wet weather, or when something needs to be dried quickly, the heat-pump dryer gives us flexibility without the same concern about energy use.

The combination matters: an efficient appliance powered by home-generated electricity is much more effective than either measure on its own.

Efficient Fridges and Freezers Matter More Than Exciting Gadgets

Solar panels and batteries attract attention. Fridges and freezers do not.

Yet refrigeration runs continuously, 24 hours a day and 365 days a year. A small reduction in hourly consumption becomes significant over the lifetime of the appliance.

Choosing a highly efficient fridge and freezer reduces the base electrical load of the house. That means:

• the batteries last longer;

• more solar electricity is available for other purposes;

• less electricity has to be imported overnight;

• winter demand becomes easier to manage.

Efficiency is effectively a form of invisible generation. Every kilowatt-hour that an appliance does not need is a kilowatt-hour that does not have to be generated, stored or purchased.

This is why I would advise anyone planning a solar-and-battery system to examine the appliances as well as the generation equipment.

There is little point spending heavily on batteries while allowing old, inefficient appliances to drain them continuously.

Learning to Cook on Electricity Took Time

Leaving gas also meant changing the way we cooked.

Gas is familiar, visible and immediately responsive. Moving to electric cooking required us to relearn heat settings, timings and how the hob continued to behave after a control was adjusted.

It was not impossible, but it was not completely automatic either.

The transition would have been easier if we had treated it as a new skill rather than expecting electric cooking to behave exactly like gas.

Good cookware matters. Pan size matters. Understanding the available settings matters. After a while, the new method becomes normal, but there is a learning period.

This is a minor point compared with installing a heat pump or battery bank, yet it affects daily life far more often. A successful transition to an all-electric home must work in the kitchen as well as in the plant room.

The Investment Was Large—but So Is the Return

I would not describe our system as cheap.

Solar panels, inverters, batteries, a heat pump, solar hot water and efficient appliances represent a substantial investment. There may also be electrical work, plumbing changes, controls, insulation and maintenance to consider.

The return on investment cannot be reduced to one simple figure.

It includes:

• electricity generated and used directly;

• electricity stored and used later;

• cheaper overnight electricity stored during winter;

• avoided gas consumption;

• removal of the gas standing charge;

• solar-heated water;

• reduced exposure to future energy-price increases;

• lower consumption from efficient appliances;

• the ability to use more of our own renewable energy.

The precise payback period depends on installation costs, tariffs, export payments, household consumption and equipment lifespan.

Nevertheless, the measured generation figures show that the system is doing substantial useful work. More than 3,000 kWh in the recorded period is not a theoretical prediction from a sales brochure. It is electricity that was actually produced on our roof.

The return is financial, but it is also practical. We have greater control over when and how we obtain our energy.

The Mistakes I Would Avoid Next Time

I Would Have Started Earlier

My clearest regret is not beginning sooner.

Every year of delay was another year of buying more energy from the grid and relying on gas. It was also a lost opportunity to learn how the technologies worked while gradually improving the system.

Waiting for every technology to become perfect can become an excuse to do nothing. Solar panels, batteries and heat pumps will continue to improve, but a system installed today can begin producing savings today.

I Would Plan for Winter, Not the Annual Average

Annual generation estimates can be misleading.

The important question is not only, “How much electricity will this system generate in a year?”

It is also, “What happens during a cold, cloudy week in January?”

Winter determines battery requirements, heating demand and how much grid electricity will still be needed.

I Would Treat Efficiency as Part of the Installation

Insulation, efficient refrigeration, a heat-pump tumble dryer, appliance controls and sensible heating settings should not be afterthoughts.

Reducing demand can be cheaper than buying enough panels and batteries to support unnecessary demand.

I Would Collect Better Data From the Beginning

Meter readings, tariff information, heat-pump consumption, battery losses, solar generation and export figures all help to reveal whether the system is working as intended.

I recorded the solar output, but a complete long-term financial analysis needs equally good records of consumption, imports, exports and costs.

I Would Allow for Expansion

A system that appears generous when first installed may feel smaller after adding a heat pump, electric cooking, workshop equipment, an electric vehicle or other electrical loads.

Where possible, cables, inverter capacity, distribution boards and physical space should allow for future expansion.

The Unexpected Benefits

Some of the best results were not the ones I originally expected.

Energy Has Become More Interesting

We now understand our home’s energy use far better than before. Weather forecasts, solar production and battery levels have become connected to practical decisions.

Energy is no longer an invisible bill arriving at the end of the month.

Sunny Days Feel Productive

A sunny day does more than improve the weather. It heats water, charges batteries, runs appliances and provides energy for later.

There is genuine satisfaction in seeing the house powered by the roof.

Everyday Jobs Feel Less Wasteful

Running the dishwasher, drying clothes or using workshop equipment feels different when the electricity is being produced at home.

We can even use our solar-generated electricity to help charge our electric boats. Sunshine falling on the house can eventually provide power on the river.

We Have One Integrated System Instead of Separate Fuels

Previously, gas provided some services and electricity provided others. Now the house is based around one flexible energy source that can be generated, stored and directed to different uses.

That makes the system more understandable, even though operating it efficiently requires more thought.

We Think More Carefully About Consumption

Generating our own electricity has not encouraged us to waste it. It has made us more aware of its value.

The aim is not to use electricity simply because it appears to be free. The aim is to use available renewable energy intelligently.

Practical Advice for Anyone Considering an All-Electric Home

Begin by understanding your present consumption. Look at both annual totals and winter peaks.

Improve insulation and reduce unnecessary demand before deciding how large the heat pump, solar array or battery should be.

Consider the technologies as one system. Solar panels, batteries, heat pumps, hot-water storage, tariffs and appliances affect one another.

Use timers and smart controls, but keep the system understandable. Automation is only helpful when the household knows what it is doing.

Do not assume a large battery will make the house independent throughout winter. Storage shifts energy through time; it does not create it.

Keep real records. Generation forecasts are useful, but measured performance is better.

Finally, plan for how the household actually lives. A theoretically perfect system is no use if it makes cooking, washing or heating unnecessarily difficult.

Conclusion: The House Has Changed—and So Have We

Leaving gas behind has not simply changed where our energy comes from.

It has changed when we wash clothes, when we run the dishwasher, how we dry laundry, how we cook and how we think about the weather. We have learnt to use efficient appliances, store cheap electricity in winter and make the most of solar production during the brighter months.

The system is not perfect.

The investment was substantial. Electric cooking took time to learn. Winter remains challenging. Even approximately 50 kWh of battery storage can feel inadequate when the heat pump is working hard and the sky remains grey for several days.

I should have started earlier, planned more carefully for winter and collected more complete financial data from the beginning.

But the overall lesson is positive.

From 1 January to 16 June 2025, our roof generated more than 3,000 kWh of electricity. Solar hot water provided an additional benefit. During the brighter part of the year, our home can produce nearly all the electricity it needs.

The greatest surprise is that going all-electric has not felt like giving something up. It has felt like gaining greater control.

A greener home is not created by purchasing one impressive piece of equipment. It is created by combining generation, storage, efficient heating, efficient appliances and better habits.

The technology produces the electricity.

The real transformation comes from learning how to use it.