Lumena Lights stock a range of low energy reflector lamps which have either an ES or SES bases; these include PAR38, R50, R80 and R63 CFLs. Being compact fluorescent lamps, they use a lot less energy than equivalent halogen reflector lamps, however they definitely compete on brightness and last a lot longer!
We also stock our Luxa 40 R7s floodlight lamp. This is a 40W energy saving lamp suitable for use in most standard R7s fittings, which is virtually equivalent in brightness to a 200W Halogen. The Luxa 40 lamp is supplied with all of our Luxora Floodlights, but is also available as an individual product, ideal for replacing halogen R7s lamps.