What Power Outages Cost Guest Houses and B&Bs in South Africa

Power outages can cost a guest house or B&B far more than the electricity that stops working. A single disruption can affect bookings, guest satisfaction, online reviews, food and refrigeration, connectivity, staff time, and the overall experience a property promises its guests.

For hospitality businesses, the real cost is not simply the hours without electricity. It is the potential revenue, reputation, and guest confidence lost when essential services stop working.

Even as national load shedding has become less frequent, localised outages, municipal faults, load reduction, and unreliable grid supply can still create problems for guest houses, B&Bs, lodges, and boutique hotels.

This guide looks at the cost of power outages for guest houses and B&Bs, what guests notice, the hidden operational costs, and how backup power, including solar and battery storage, can reduce their impact.

Table of Contents:

• What power outages cost guest houses and B&Bs.
• Why power outages still affect South African hospitality businesses.
• The direct financial costs of a power outage.
• The hidden cost of guest experience and online reviews.
• How power outages affect different types of hospitality businesses.
• Generator costs: fuel, maintenance, noise, and disruption.
• How solar and battery storage can reduce outage impact.
• Solar and battery vs. generator backup.
• How much backup power does a guest house need?
• Frequently Asked Questions.

Why power outages still hurt guest houses and BnBs

National load shedding has been absent for more than 450 consecutive days since May 2025 thanks to improved Eskom performance and widespread private solar adoption.

Even when load shedding is reduced, hospitality businesses can still experience localised outages, municipal faults, load reduction, and unreliable grid supply. For guest houses and B&Bs, the impact can extend beyond the immediate loss of electricity to lost revenue, guest dissatisfaction, and reputational damage.

What guests notice and review

Guests book a guest house or lodge to escape everyday frustrations. When essential services stop working, the problem can quickly become part of the guest experience and potentially part of the review they leave afterwards.

When the lights flicker, air conditioning cuts out, Wi-Fi drops, or a generator starts at night, the experience guests paid for can change immediately. Cold showers, spoiled food, poor connectivity, and generator noise can all contribute to dissatisfaction.

The true cost of power outages for guest houses and B&Bs

• Lost bookings or cancellations during significant outages.
• Refunds, discounts, or compensation offered to affected guests.
• Food and beverage losses caused by failed refrigeration.
• Staff time spent managing complaints and operational workarounds.
• Negative online reviews that can influence future booking decisions.
• Loss of repeat bookings and customer confidence.
• Disruption to Wi-Fi, security, lighting, air-conditioning, and other guest services.
• Generator fuel, maintenance, and servicing costs.
• Noise and fumes that affect the guest experience.
• Lost revenue during peak-season periods when disrupted nights can have a disproportionate impact.

How power outages affect different types of hospitality businesses

Guest houses and B&Bs

A smaller property may be particularly exposed because a handful of disrupted rooms can represent a significant proportion of available inventory.

Boutique hotels

Larger properties have more systems and guest areas to keep operational, increasing the potential operational impact of an outage.

Remote and safari lodges

Properties with weak grid connections may depend more heavily on backup generation and therefore face greater fuel, maintenance, and noise considerations.

Generator costs: fuel, maintenance, noise, and disruption

Diesel is only one part of the cost of generator backup. Hospitality businesses also need to consider servicing, maintenance, fuel storage, staff management, noise, fumes, and the effect of generator operation on the guest experience.

Where generators remain necessary, they can still form part of a resilient backup strategy. However, reducing generator runtime with solar and battery storage can lower fuel use and minimize disruption.

How solar and battery storage can reduce outage impact

A properly sized solar and battery system can reduce the operational impact of outages by keeping priority loads running when the grid is unavailable or unstable.

Solar panels can charge the battery during the day, while a suitable hybrid inverter can switch priority loads to stored energy when grid power fails. Depending on the system design, priority services may include lighting, Wi-Fi, refrigeration, security, and selected air-conditioning or hot water loads.

An existing generator can also be retained as a final backup where appropriate, giving the property multiple layers of resilience.

Solar and battery vs. generator backup

When assessing the cost of power outages, the backup system itself also matters. Generators can provide substantial power, but they bring fuel, maintenance, noise, and emissions costs. Solar and battery systems offer a different operating mode, particularly for properties where guest experience is important.

Generator noise: Loud and potentially disruptive, particularly at night.
Solar and battery noise: Very low operating noise.

Generator fuel: Requires an ongoing diesel or petrol supply.
Solar and battery fuel: Battery stores electricity; solar can recharge during daylight.

Generator maintenance: Regular servicing and mechanical maintenance.
Solar and battery maintenance: Battery and inverter systems have different maintenance requirements.

Generator guest experience: Noise, fumes, and visible generator operation can affect ambience.
Solar and battery guest experience: Can provide a quieter backup experience.

Generator operating cost: Fuel and servicing costs during generator use.
Solar and battery operating cost: Low marginal operating cost after installation subject to system performance.

Generator backup strategy: Can provide long-duration backup when fuel is available.
Solar and battery operating backup strategy: Best sized around defined critical loads and required autonomy.

How much backup does a guest house need?

The correct system size depends on the property's electricity demand, critical loads, outage duration, solar generation potential, and the level of backup required. A site-specific energy assessment is more useful than choosing a standard system size. 

Extra benefits for eco-conscious travellers

Sustainability is no longer a niche preference.

Many travelers actively look for properties that demonstrate environmental responsibility. A visible or well-communicated solar system becomes a marketing asset that supports higher occupancy and premium rates, especially among European and eco-focused markets. It also aligns with growing certification and green tourism requirements.

What a practical system looks like for different properties

A properly designed solar and battery system can help hospitality businesses maintain essential services during power outages while reducing reliance on generators. If you are considering solar for a guest house, B&B, lodge, or hotel, our guide to solar solutions for tourism and hospitality includes information on system design, applications, and the benefits for different types of properties.

Frequently asked questions

How much can a power outage cost a guest house?

The cost depends on the property size, the length of the outage, and which services are affected. Potential costs include cancelled or shortened bookings, refunds or discounts, spoiled food, staff time, generator fuel and maintenance, and the longer-term effect of negative guest reviews. A property can estimate its exposure by calculating the revenue and operating costs affected during a typical outage.
(A recent WETILITY report detailed 91,934 unplanned outages across South Africa in 2025, averaging a duration of 12.1 hours across businesses and households.)

What are the biggest costs of power outages for B&Bs?

The biggest costs can extend well beyond the immediate loss of electricity. B&Bs may face lost bookings, guest compensation, food and refrigeration losses, staff time dealing with complaints, generator fuel and maintenance costs, and disruption to services, including heat, hot water, and lighting.

Can power outages lead to negative guest reviews?

Power interruptions can affect services guests expect. Noise and fumes from generators can also affect the atmosphere of a property. When these disruptions affect a stay, guests may mention them in reviews, potentially influencing future customers who are researching where to stay.

What hospitality services are most affected by power cuts?

The services affected depend on the property but commonly include lighting, Wi-Fi, and communications and can also include security systems, hot water, and payment systems. A backup system should prioritize the services that have the greatest effect on guest comfort, safety, and business continuity.

How much does it cost to run a generator during an outage?

Generator running costs depend on the generator's size, fuel consumption, diesel price, and the number of hours it operates. The overall cost can also include servicing, maintenance, repairs, and staff time. Hospitality businesses should consider these ongoing costs when comparing different backup-power strategies.

Can solar and batteries prevent guest disruption during outages?

A correctly designed solar and battery system can keep selected essential loads operating when grid power fails. Depending on the system design, this may include power, lighting, security, and hot water. The level of protection depends on battery capacity, energy demand, and the expected duration of the outage.

Should a guest house use solar batteries, a generator, or both?

The right combination depends on the property's energy consumption, grid reliability, critical loads, and required backup duration. Solar and batteries can provide quieter backup and reduce reliance on fuel, while a generator can provide additional capacity for longer or unusually demanding outages. Some hospitality properties may therefore use a combination of technologies as part of a layered backup strategy.

How Bigfisch Projects can help you 

For guest houses and B&Bs, understanding costs is the first step towards choosing the right backup strategy. Solar and battery storage can be a part of that strategy, alongside appropriately sized backup generation where required.

We can assess your property's energy use, critical loads, and backup requirements to help determine a practical solution for hospitality operations. Send us an email for a free, no-obligation discussion.

About Bigfisch Projects

Written by the Bigfisch Projects team, experienced solar and battery specialists who design practical energy solutions for guest houses, B&Bs, boutique hotels, and remote lodges across Southern Africa. Bigfisch focuses on reliable power, guest experience, and commercially practical solutions.