Energy Optimisation Ireland: Get More From Solar, EVs & Heat Pumps

Installing solar panels, battery storage, an EV charger or a heat pump can significantly change how your home uses electricity.

But installing the technology is only part of the journey.

The electricity tariff you use afterwards can have a major impact on running costs and the savings your energy upgrade ultimately delivers.

WeSwitchU helps households review electricity tariffs based on how their home actually uses energy after an upgrade.

Review Your Electricity Plan After an Energy Upgrade

What Is Home Energy Optimisation?

Home energy optimisation means making your electricity tariff and usage pattern work effectively with the energy technology installed in your home.

An upgraded home may have a very different electricity profile from a traditional household.

For example:

an EV can substantially increase overnight electricity consumption
solar PV can reduce daytime electricity imports
battery storage can change when electricity is imported from the grid
a heat pump can significantly increase overall household electricity consumption

These changes mean that the electricity tariff that suited your home before an upgrade may not necessarily be the best tariff afterwards.

Why Review Your Electricity Tariff After an Energy Upgrade?

Electricity tariffs are increasingly structured around when electricity is consumed, not simply how much is used.

Depending on your meter and supplier, electricity plans may include:

standard 24-hour electricity pricing
day and night rates
smart time-of-use tariffs
peak electricity rates
off-peak and overnight rates
specialist EV charging periods

The cheapest advertised electricity rate is therefore not necessarily the cheapest plan for an upgraded home.

The right comparison should consider your complete household electricity profile and estimated annual cost.

Compare Electricity Prices Based on Your Usage

Solar Panel Electricity Tariff Optimisation

Solar PV changes the amount of electricity a household needs to import from the grid and when that electricity is required.

Solar households may use less grid electricity during daylight hours but continue importing electricity during evenings, overnight and during periods of lower solar generation.

When comparing electricity plans for a solar home, consider:

grid electricity import rates
standing charges
day and night electricity usage
smart tariff pricing
solar generation patterns
electricity export payments

Looking only at the lowest import rate can give an incomplete picture, particularly where significant electricity is exported to the grid.

Compare Electricity Tariffs for Solar & Battery Homes

Battery Storage and Electricity Tariffs

Battery storage can give households more flexibility over when electricity is imported and used.

Depending on the household and tariff, a battery may be used to:

store excess solar electricity for later use
reduce grid imports during expensive periods
charge during suitable lower-cost electricity periods

The best strategy depends on battery capacity, solar generation, household consumption and the electricity tariff being used.

This makes tariff selection particularly important for homes combining solar PV with battery storage.

EV Charging Optimisation

Charging an electric vehicle at home can substantially increase household electricity consumption.

For many EV households, when the vehicle is charged becomes just as important as how much electricity it consumes.

Lower-cost overnight or off-peak electricity periods can reduce EV charging costs, but the entire household tariff should still be considered.

A very cheap EV charging rate may be accompanied by higher electricity prices at other times of the day.

The best EV electricity plan therefore depends on both vehicle charging and the household's wider electricity usage.

Compare EV Electricity Plans & Charging Rates

Heat Pump Electricity Optimisation

Heat pumps move a significant part of a household's heating demand onto the electricity bill.

This can make electricity tariff selection particularly important for heat pump homes.

The most suitable tariff depends on factors including:

annual heat pump electricity consumption
overall household electricity usage
heating patterns
unit rates
standing charges
smart or night-rate pricing

Tariff optimisation should support efficient heat pump operation rather than simply forcing heating into a particular electricity pricing period.

Compare Electricity Tariffs for Heat Pump Homes

Homes With Solar, Battery, EV and Heat Pumps

Electricity tariff comparison becomes even more important when several energy technologies are combined in one home.

A household might generate solar electricity during the day, charge a battery at certain times, charge an EV overnight and use a heat pump for heating and hot water.

In these homes, simply comparing one electricity unit rate is unlikely to show the complete picture.

The comparison may need to consider:

total annual electricity consumption
electricity usage at different times of day
solar generation
battery charging and discharging
EV charging
heat pump consumption
standing charges
electricity export payments

The objective is to find the electricity tariff that works best with the complete energy profile of the home.

Smart Tariffs and Energy Optimisation

Smart tariffs can provide different electricity prices at different times of the day.

That can create opportunities for upgraded homes, particularly where electricity usage can be moved to suitable lower-cost periods.

However, smart tariffs can also include more expensive peak periods.

Before choosing a smart tariff, it is important to understand when your household actually consumes electricity.

Learn How Smart Electricity Tariffs Work

Understand Smart Meter Peak and Off-Peak Hours

How WeSwitchU Helps Optimise Electricity Costs

WeSwitchU helps households compare electricity plans using their actual electricity usage and energy profile.

For upgraded homes, this can include considering:

smart tariff options
day and night electricity usage
EV charging patterns
solar generation
battery storage
heat pump electricity consumption
standing charges
electricity export payments
estimated total annual electricity cost

Rather than relying solely on headline discounts, the aim is to identify an electricity plan that matches how the household actually uses energy.

Get an Electricity Tariff Review

Installation Is the Starting Point. Optimisation Comes Next.

Solar panels, batteries, EV chargers and heat pumps are long-term investments.

But the electricity market continues changing after those systems are installed.

New tariffs become available, electricity prices change and household consumption can evolve over time.

That means energy optimisation should not be treated as a one-off decision made on installation day.

Reviewing the electricity tariff over time can help ensure the household continues getting value from its energy upgrades.

Working With Energy Upgrade Installers

WeSwitchU also works with installers, retrofit providers and other energy-upgrade businesses that want to help customers get more value after installation.

This can complement services provided by:

solar PV installers
battery storage installers
heat pump installers
EV charger installers
EV dealerships
retrofit providers
energy consultants

Installation is the starting point. Optimisation is what happens afterwards.

Learn About WeSwitchU Partnership Opportunities

Energy Optimisation FAQs

Should I change electricity tariff after installing solar panels?

It is worth reviewing your tariff because solar PV changes when and how much electricity you import from the grid. Export payments may also affect which electricity arrangement provides the best overall value.

What electricity tariff is best for an EV?

The best EV electricity tariff depends on when the vehicle is charged and the household's overall electricity usage. Lower-cost overnight charging can be valuable, but day rates, peak rates and standing charges should also be considered.

Should I review my electricity tariff after installing a heat pump?

Yes. A heat pump can significantly change annual household electricity consumption, so the tariff that suited the home previously may no longer provide the best value.

Can solar panels and battery storage work with smart tariffs?

Yes. Some households can use smart tariffs alongside solar and battery storage to manage when electricity is imported, stored and consumed. The benefit depends on the household's individual energy profile.

Is the cheapest electricity unit rate always the best tariff?

No. Standing charges, peak and off-peak rates, electricity usage patterns and export payments can all affect total annual cost.

How often should I review my electricity tariff after an energy upgrade?

It is sensible to review the tariff when a contract or discount period ends and whenever there is a significant change in household electricity usage or energy technology.

Related Energy Optimisation Guides

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