• pen icon Complete our simple form
  • quote icon Up to 3 solar companies will contact you
  • thumbs up icon You choose the best quote


We specialise in

  • Domestic
  • Solar PV (Electricity)

Clock Icon Solar Guide member since July 2018

Awaiting feedback

About Alterenergyuk

Alter energy is a World Class UK owned company on a mission to make renewable energy readily available to everyone. With over 10 years combined industry experience and over 3,000 installations we pride ourself on being market leaders by continuously keeping on the forefront of the latest research & technology, to ensure we provide the best quality products and services to our customers.

As innovators of the market, we are constantly creating new energy solutions to further reduce energy costs and optimise energy consumption. Our years of experience and expertise mean that by working with you to design a personalised solution we can put the power of energy back in your hands.

We believe our services are unrivalled, with life time monitoring and the longest fully comprehensive insurance backed warranties. We strive to Over-deliver in every aspect of each project. We believe by Exceeding customer expectations we can grow a successful business based on reputation. With a huge referral network we are known in the industry to only raise the bar, not the price.

Most importantly unlike other companies because we care about securing your energy future All of our solutions come with our 25 year performance guarantee.

Phone Icon Call Alterenergyuk on - Tel: 07476241338 | Mob: 07476241338

Location Icon Alterenergyuk, Building 1000, Lakeside North Harbour, Portsmouth, Hampshire, PO6 3EZ


  • part p logo

Featured Works

  • Portsmouth 4kw

    Portsmouth 4kw unique floor mounted project at clients request.

  • Henley-On-Thames 6kw

    Henley-on-thames 6kw two of our dedicated craftsmen installers in action.

  • Reading 4kw

    Reading 4kw aesthetic colour coded panels.

  • Petersfield 4kw

    Petersfield 4kw delighted clients referred their neighbours.

  • Reading 3kw

    Reading 3kw expert installation on a steep incline.

  • Enfield 4kw

    Enfield 4kw commercial flat roof installation combined with a traditional steep roof installation in the background.

  • Essex 5kw

    Essex 5kw well balanced design.

  • Slough 4kw

    Slough 4kw our dedicated expert installers are not scared of heights!

  • Wycombe 4kw

    Wycombe 4kw major project required scaffolding.

  • Comprehensive Warranties

    Comprehensive warranties industry leading comprehensive warranties

  • Cutting edge products

    Cutting edge products we provide the leading cutting edge technology from some of the world biggest companies.

  • HIES - Approved

    Hies - approved

  • RECC - Approved

    Recc - approved

  • MCS - Approved

    Mcs - approved